2-port STM-1/OC-3 Channelized E1/T1 Line Card
for Cisco 12000 Series Internet Routers
This feature module describes the Two-port STM-1/OC-3 Channelized E1/T1 line card and its use in the
Cisco 12000 series Internet Routers.
This document includes information on the following topics:
•
Feature Overview, page 1
•
Supported Platforms, page 4
•
Supported Standards, MIBs, and RFCs, page 5
•
Configuration Tasks, page 6
•
Monitoring and Maintaining Operation, page 13
•
Configuration Examples, page 15
•
Command Reference, page 18
•
Glossary, page 91
Feature Overview
The Two-port STM-1/OC-3 Channelized E1/T1 line card provides E1/DS1 aggregation for the Cisco
12000 series Internet Router. The Two-port STM-1/OC-3 Channelized E1/T1 line card interfaces with
the 12000 series Internet Router switch fabric and provides two OC-3/STM-1 duplex SC single-mode
intermediate-reach optical interfaces.
When configured for operation in a Synchronous Digital Hierarchy (SDH) environment, each STM-1
port is capable of supporting channelization into either 63 independent E1s through VC-12 ETSI
mapping, or 84 J1 (Japanese T1 equivalent) channels through VC-11 ANSI mapping.
When configured for operation in a Synchronous Optical Network (SONET) environment, each OC-3
port is capable of supporting channelization into 84 independent DS1 (VT1.5 mapping or CT3 mapping
into STS-1) channels.
Fractional E1 and individual 64 kbps channels can also be configured, up to the limit of 105 channel
definitions per STM-1 (35 per TUG-3). Fractional T1 and individual DS0 channels can also be
configured, up to the limit of 35 channel definitions per STS-1 (210 per line card).
Each Two-port STM-1/OC-3 Channelized E1/T1 line card supports up to 126 E1s when configured for
SDH operation, 168 DS1 connections when configured for SONET operation, or any combination of 64
kbps/DS0, fractional E1/T1, or E1/T1 interface definitions, up to the limit of 210 per line card.
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Feature Overview
SDH STM-1 Multiplexing Hierarchy
Figure 1 illustrates the SDH STM-1 multiplexing hierarchy supported on the Two-port STM-1/OC-3
Channelized E1/T1 line card. The multiplexing hierarchy is the ITU-T SDH multiplexing hierarchy
defined in ITU-T G.707.
Figure 1
SDH STM-1 Multiplexing Hierarchy
VC-3
x1
TU-3
x1
TUG-3
x3
VC-4
x1
AU-4 x1
AUG
E3/DS3
DS3
Mbps
45 45
Mbps
C-3
VC-3
x1
x1
x1
STM-1
AU-3 x3
x7
DS1
J1
1.544 Mbps
C-12
VC-12
x7
TU-12 x3
TUG-2
C-11
VC-11
TU-11 x4
Multiplexing
Aligning
Mapping
57106
E1
2.048 Mbps
At the lowest level, PDH signals are mapped into containers (C). The mapping process uses bit stuffing
to generate synchronous containers with a common bit rate. Overhead bytes are then added to create
virtual containers (VCs). The VCs are then aligned into tributary units (TUs) where pointer processing
operations are implemented. This allows the TUs to be synchronously multiplexed into TU groups
(TUGs). The TUGs are then multiplexed to become the payload of a High Order VC (HOVC) that
includes its own overhead bytes. The HOVC is aligned into an administrative units (AUs) by adding the
AU pointer, then multiplexed into an AU group (AUG). Finally, the frame of an SDH Synchronous
Transport Module level N (STM-N) is created by multiplexing N AUGs and adding the Multiplexer
Section and Regenerator Section Overhead bytes (MSOH and RSOH).
SONET OC-3 Multiplexing Hierarchy
Figure 2 illustrates the SONET OC-3 multiplexing hierarchy supported on the Two-port STM-1/OC-3
Channelized E1/T1 line card. DS1 signals are multiplexed in one of two methods: Virtual Tributary
Group structure VT1.5 mapping, which is used for DS1 transport, or T1 PDH M13 mapping, which
multiplexes DS1 signals asynchronously to form a DS3 signal.
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Feature Overview
Figure 2
DS1
SONET OC-3 Multiplexing Hierarchy
VT1.5 SPE
VT1.5 SPE
x4
VT group
x7
M13
multiplex
DS3
STS1 SPE
x1
STS-1
x3
STS-3
OC-3
57107
DS1
T1 VT1.5 mapping
T1 PDH M13 mapping
In VT1.5 mapping, each DS1signal is individually mapped into a Virtual Tributary 1.5 (VT1.5)
Synchronous Payload Envelope (SPE). Overhead bytes are added to the payload, the VTs are aligned
using a VT pointer, and then synchronously multiplexed into a VT group (VTG). VTGs are further
multiplexed to form the payload of an STS-1 SPE. The addition of overhead bytes, and alignment by
using a pointer, completes the STS-1 signal. Three STS-1 signals are then synchronously multiplexed
and complemented by Line and Section overhead bytes to form an STS-3 frame, which is then converted
from electrical to optical to form an OC-3 signal.
In T1 PDH M13 mapping, DS1 signals can be multiplexed asynchronously to form a DS3 signal, which
is then mapped directly into an STS-1 SPE. Three STS-1s are then combined to form the OC-3 signal.
Benefits
The Two-port STM-1/OC-3 Channelized E1/T1 line card concentrates up to 168 DS-1s in one line card.
This level of aggregation increases per-rack density and overall router capacity, enabling service
providers to scale networks in a cost-effective manner.
Restrictions
The following qualifications apply when you are configuring a Two-port STM-1/OC-3 Channelized
E1/T1 line card:
•
Because a single clock line times all tributary channels on the Two-port STM-1/OC-3 Channelized
E1/T1 line card, both ports of a card must be configured for the same channelization—either E1
channelization or T1 channelization. You cannot configure one port for E1 channelization and the
other port for T1 channelization.
•
The maximum number of channel groups per STS-1, AU-3, or TUG-3 is 35; full channelization to
DS0 is not supported.
•
The idle timeslot pattern, set using the idle pattern pattern command, affects a pair of STS-1s,
AU-3s, or TUG-3s. The following pairs use the same idle timeslot pattern:
– Port 0, path 1 — port 0, path 2
– Port 0, path 3 — port 1, path 1
– Port 1, path 2 — port 1, path 3
•
MLPPP bundles must be contained within a single line card. Links in a bundle can be assigned to
different ports on the same card, but assigning links from different line cards to one bundle is not
supported.
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Supported Platforms
Related Features and Technologies
•
Weighted Random Early Detection (WRED)
•
Modified Deficient Round Robin (MDRR)
•
Multilink Point-to-Point Protocol (MLPPP)
•
Multiprotocol Label Switching (MPLS)
•
Virtual Private Networks (VPNs) for MPLS
•
Multilink Frame Relay (MLFR)
•
Multichannel STM-1 Port Adapter (PA-MC-STM1)
See the “Related Documents” in the next section for a list of documents that describe these features and
technologies.
Related Documents
The following documents provide additional information about installing and configuring Two-port
STM-1/OC-3 Channelized E1/T1 line cards:
•
2-port STM-1/OC-3 Channelized E1/T1 Line Card Installation and Configuration
•
Release Notes for Cisco IOS Release 12.0 ST
•
Release Notes for Cisco 7000 Family and Cisco 12000 Series Routers for Cisco IOS Release 12.0 S
•
Weighted Random Early Detection on the Cisco 12000 Series Router
•
Configuring Media-Independent PPP and Multilink PPP
•
Multiprotocol Label Switching on Cisco Routers
•
MPLS Virtual Private Networks
•
Multilink Frame Relay (FRF.16)
You can also find additional information in the installation and configuration guide for your Cisco 12000
series Internet Router, and in the Cisco IOS Release 12.0 documentation set.
Supported Platforms
•
Cisco 12008 Internet Router
•
Cisco 12012 Internet Router
•
Cisco 12016 Internet Router
•
Cisco 12410 Internet Router
•
Cisco 12416 Internet Router
The Two-port STM-1/OC-3 Channelized E1/T1 line card is compatible with any Cisco 12000 series
Internet Router that is operating with the following system software: Cisco IOS Release 12.0(17)S or
later, or Cisco IOS Release 12.0(17)ST or later.
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Supported Standards, MIBs, and RFCs
Supported Standards, MIBs, and RFCs
Standards
•
Packet-over-SONET/SDH (POS), ITU-T G.957, ITU-T G.958 as applicable
•
Cisco HDLC
•
Layer 3 routing protocols, including BGPv4, OSPF, IS-IS, EIGRP, RIP, Distributed FIB IP
switching, CDP, ICMP, RRR, and others
•
Multicast forwarding with support for source and shared distribution trees, and the following
protocols: PIM-DIM, PIM-SM, AutoRP, IGMPv1/v2, CGMP, MBGP, MSDP, and others
•
Comprehensive MPLS support, including MPLS-VPN
•
Multilink Frame Relay (MLFR)
•
Traffic engineering using Routing with Resource Reservation (RRR)
•
At the E1 level: ITU-T G.703 support, framing support for CRC-4 and no-CRC-4 in conformance
with ITU-T G.703 and ITU-T G.704
•
At the DS1level: Superframe (SF) and Extended Superframe (ESF) support, ANST T1.403 FDL
support
MIBs
In addition to industry-standard SNMP and other MIBs supported on the Cisco 12000 series Internet
Router, the Two-port STM-1/OC-3 Channelized E1/T1 line card also supports the following:
•
SONET/SDH MIB (RFC 2558, formerly RFC 1595)
•
DS3 MIB (RFC 2496)
•
DS1/E1 MIB (RFC 2495)
To obtain lists of supported MIBs by platform and Cisco IOS release, and to download MIB modules,
go to the Cisco MIB web site on Cisco Connection Online (CCO) at
http://www.cisco.com/public/sw-center/netmgmt/cmtk/mibs.shtml.
RFCs
•
IETF RFC 1490, Frame Relay Encapsulation
•
RFC 1619, Point-to-Point Protocol over SONET/SDH
•
RFC 1662, Point-to-Point Protocol in HDLC-like Framing
•
RFC 2615, PPP over SONET/SDH
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Configuration Tasks
Configuration Tasks
See the following sections for configuration tasks for the Two-port STM-1/OC-3 Channelized E1/T1 line
card. Each task in the list is identified as either optional or required.
•
Configuring the SONET Controller, page 6
•
Configuring STS-1 Path Attributes under SONET Framing, page 6
•
Configuring Administrative Unit Group (AUG) Mapping under SDH Framing, page 8
Configuring the SONET Controller
To configure the SONET controller on the Two-port STM-1/OC-3 Channelized E1/T1 line card, perform
the following steps:
Command
Purpose
Step 1
Router(config)# controller sonet slot/port
Select the physical port you want to configure.
Step 2
Router(config-controller)# framing {sonet | sdh}
Specify the framing type.
Step 3
Router(config-controller)# clock source {internal |
line}
Set the clock source for the selected OC-3/STM-1
port.
Step 4
Router(config-controller)# description string
(Optional) Add a description for the controller.
Step 5
Router(config-controller)# report {all | event}
(Optional) Enable reporting of selected alarm and
signal events.
Step 6
Router(config-controller)# threshold type value
(Optional) Set threshold values for the BER
Threshold Crossing Alarms.
Configuring STS-1 Path Attributes under SONET Framing
To enter STS-1 path configuration mode to configure an STS-1 path under SONET framing on the
Two-port STM-1/OC-3 Channelized E1/T1 line card, perform the following steps:
Command
Purpose
Step 1
Router(config)# controller sonet slot/port
Select the physical port you want to configure.
Step 2
Router(config-controller)# framing sonet
Specify SONET as the framing type.
Step 3
Router(config-controller)# sts-1 number
Enter STS-1 path configuration mode.
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Configuration Tasks
Configuring the Mode of Operation
DS1 signals are multiplexed in one of two methods: Virtual Tributary Group (VTG) structure VT1.5
mapping, which is used for DS1 transport, or T1 PDH M13 mapping (channelized T3, or CT3), which
multiplexes DS1 signals asynchronously to form a DS3 signal.
To configure the STS-1 mode of operation under SONET framing on the Two-port STM-1/OC-3
Channelized E1/T1 line card, perform the following steps:
Command
Purpose
Step 1
Router(config)# controller sonet slot/port
Select the physical port you want to configure.
Step 2
Router(config-controller)# framing sonet
Specify SONET as the framing type.
Step 3
Router(config-controller)# sts-1 number
Enter STS-1 path configuration mode.
Step 4
Router(config-crtlr-sts1)# mode {vt-15 | ct3}
Specify the mode of operation for the STS-1.
Configuring T3 Links Under SONET Framing
When you are configuring the Two-port STM-1/OC-3 Channelized E1/T1 line card for SONET framing,
and have selected ct3 as the STS-1 mode of operation, you can configure the T3 link using the following
steps:
Command
Purpose
Step 1
Router(config-crtlr-sts1)# t3 framing [auto-detect |
c-bit | m23]
Specify the framing type for the T3 link.
Step 2
Router(config-crtlr-sts1)# t3 clock source [internal |
line]
Set the clock source for the selected T3 link.
Configuring T1 Links Under SONET Framing
When you are configuring the Two-port STM-1/OC-3 Channelized E1/T1 line card for SONET framing,
and have selected vt-15 as the STS-1 mode of operation, you can configure the T1 link using the
following steps:
Command
Purpose
Step 1
Router(config-crtlr-sts1)# vtg vtg-number t1
t1-line-number channel-group channel-group-number
timeslots list-of-timeslots [speed {56 | 64}]
Create a logical channel group on a T1 line.
Step 2
Router(config-crtlr-sts1)# vtg vtg-number t1
t1-line-number framing {esf | sf [hdlc-idle {0x7E |
0xFF}]}
Specify the T1 framing format.
Step 3
Router(config-crtlr-sts1)# vtg vtg-number t1
t1-line-number clock source {internal | line}
Set the internal or line (network) clock source.
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Configuration Tasks
When you are configuring the Two-port STM-1/OC-3 Channelized E1/T1 line card for SONET framing,
and have selected ct3 as the STS-1 mode of operation, you can configure the T1 link using the following
steps:
Command
Purpose
Step 1
Router(config-crtlr-sts1)# t1 t1-line-number
channel-group channel-group-number timeslots
list-of-timeslots [speed {56 | 64}]
Create a logical channel group on a T1 line.
Step 2
Router(config-crtlr-sts1)# t1 t1-line-number framing
{esf | sf [hdlc-idle {0x7E | 0xFF}]}
Specify the T1 framing format.
Step 3
Router(config-crtlr-sts1)# t1 t1-line-number clock
source {internal | line}
Set the internal or line (network) clock source.
Configuring an Interface under SONET Framing
After a T1 channel group is configured, it appears to the Cisco IOS software as a serial interface;
therefore, all the configuration commands for a serial interface are available, but not all commands are
applicable to the T1 channel group.
All the encapsulation formats, such as PPP, HDLC, and Frame Relay are applicable to the configured T1
channel group. Be sure that you are in serial interface configuration mode when you set the
encapsulation format.
All the switching types that are applicable to a serial interface are also applicable to the configured T1
channel group.
To configure a serial interface, use one of the following commands:
Command
Purpose
Router(config)# interface serial slot/port.sts1-number/
vtg-number/t1-number:channel-group-number
In VT1.5 mode, select the line card interface to be
configured.
Router(config)# interface serial slot/port.sts1-number/
t1-number:channel-group-number
In CT3 mode, select the line card interface to be
configured.
Configuring Administrative Unit Group (AUG) Mapping under SDH Framing
In SDH, there are two possible mapping/multiplexing schemes for most payload types: ANSI and ETSI.
In ANSI mapping, the Low Order payloads are aggregated into a VC-3 High Order Path. An AU pointer
is added to the VC-3 to create an AU-3 (Administrative Unit type 3). Three such AU-3s are then
synchronously multiplexed into an AUG (AU group). The multiplexing scheme is as follows:
… VC-3 <–> AU-3 (x3) <–> AUG <–> STM-1
SDH ANSI mapping is very similar to the SONET frame structure.
In ETSI mapping, the Low Order payloads are aggregated into a VC-4 High Order Path. An AU pointer
is added to the VC-4 to create an AU-4 (Administrative Unit type 4). One AU-4 is “multiplexed” into an
AUG (AU group), which is to say, the AUG is, in fact, equivalent to an AU-4. The multiplexing scheme
is as follows:
… TUG-3 (x3) <–> VC-4 <–> AU-4 (x1) <–> STM-1
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Configuration Tasks
To specify the AUG mapping under SDH framing on the Two-port STM-1/OC-3 Channelized E1/T1 line
card, perform the following steps:
Command
Purpose
Step 1
Router(config)# controller sonet slot/port
Select the physical port you want to configure.
Step 2
Router(config-controller)# framing sdh
Specify SDH as the framing type.
Step 3
Router(config-controller)# aug mapping {au-3 | au-4}
Select AU-3 or AU-4 AUG mapping.
Note
When configured for SDH framing, the Two-port STM-1/OC-3 Channelized E1/T1 line card supports
channelization to E1s when the AUG mapping is set to AU-4, and channelization to T1s when the
AUG mapping is set to AU-3. Different combinations of payload types and AUG mappings are not
supported.
Configuring an AU-3
Under SDH framing with AUG mapping set to AU-3, each VC-3 High Order Path can be configured to
carry up to 28 T1s, mapped into VC-11s. The mode of operation of an AU-3 is not configurable, and
defaults to mode c-11.
Entering AU-3 Configuration Mode
When you are configuring the Two-port STM-1/OC-3 Channelized E1/T1 line card for SDH framing,
and have selected au-3 as the mode of operation, you can configure an AU-3 using the following steps:
Command
Purpose
Step 1
Router(config)# controller sonet slot/port
Select the physical port you want to configure.
Step 2
Router(config-controller)# framing sdh
Specify SDH as the framing type.
Step 3
Router(config-controller)# aug mapping au-3
Select AU-3 AUG mapping.
Step 4
Router(config-controller)# au-3 number
Select the AU-3 to be configured and enter AU-3
configuration mode.
Configuring a T1 Line in AU-3 Configuration Mode
When you are configuring the Two-port STM-1/OC-3 Channelized E1/T1 line card for SDH framing,
and have selected au-3 as the mode of operation, you can configure a T1 line using the following steps:
Command
Purpose
Step 1
Router(config-crtlr-au3)# tug-2 tug-2-number t1
t1-line-number channel-group channel-group-number
timeslots list-of-timeslots [speed {56 | 64}]
Create a logical channel group on a T1 line.
Step 2
Router(config-crtlr-au3)# tug-2 tug-2-number t1
t1-line-number framing {esf | sf [hdlc-idle {0x7E |
0xFF}]}
Specify the T1 framing format.
Step 3
Router(config-crtlr-au3)# tug-2 tug-2-number t1
t1-line-number clock source {internal | line}
Set the internal or line (network) clock source.
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Configuration Tasks
Configuring an Interface under SDH with AU-3 AUG Mapping
Command
Purpose
Router(config)# interface serial slot/port.au-3-number/
tug-2-number/t1-number:channel-group-number
Select the line card interface.
Configuring a TUG-3 under AU-4 AUG Mapping
Under SDH framing with AUG mapping set to AU-4, the VC-4 High Order Path comprises three
TUG-3s. Each TUG-3 can be configured to carry up to 21 E1s, mapped into VC-12s. The mode of
operation of a TUG-3 is not configurable, and defaults to mode c-12.
Entering TUG-3 Configuration Mode
When you are configuring the Two-port STM-1/OC-3 Channelized E1/T1 line card for SDH framing,
and have selected au-4 as the mode of operation, you can configure a TUG-3 using the following steps:
Command
Purpose
Step 1
Router(config)# controller sonet slot/port
Select the physical port you want to configure.
Step 2
Router(config-controller)# framing sdh
Specify SDH as the framing type.
Step 3
Router(config-controller)# aug mapping au-4
Select AU-4 AUG mapping.
Step 4
Router(config-controller)# au-4 1 tug-3 number
Select the TUG-3 to be configured and enter
TUG-3 configuration mode.
Configuring an E1 Line in TUG-3 Configuration Mode
When you are configuring the Two-port STM-1/OC-3 Channelized E1/T1 line card for SDH framing,
and have selected AU-4 AUG mapping, you can configure an E1 line using the following steps:
Command
Purpose
Step 1
Router(config-crtlr-tug3)# tug-2 tug-2-number e1
e1-line-number channel-group channel-group-number
timeslots list-of-timeslots
Create a logical channel group on an E1 line.
Step 2
Router(config-crtlr-tug3)# tug-2 tug-2-number e1
e1-line-number unframed
(Optional) Configure the E1 line as an unframed
E1 line.
Step 3
Router(config-crtlr-tug3)# tug-2 tug-2-number e1
e1-line-number framing {crc4 | no-crc4}
Specify the E1 framing format.
Step 4
Router(config-crtlr-tug3)# tug-2 tug-2-number e1
e1-line-number clock source {internal | line}
Set the internal or line (network) clock source.
Step 5
Router(config-crtlr-tug3)# tug-2 tug-2-number e1
e1-line-number national bits pattern
Configure the national reserve bit pattern.
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Configuration Tasks
Configuring an Interface under SDH with AU-4 AUG Mapping
Command
Purpose
Router(config)# interface serial slot/port.au-4-number/
tug-3-number/tug-2-number/e1-number:channel-group-number
Select the line card interface.
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Configuration Tasks
Verifying Operation
To verify the operation of the controllers and interfaces configured on the Two-port STM-1/OC-3
Channelized E1/T1 line card, perform the following steps:
Command
Purpose
Step 1
Router# show version
Displays the configuration of the system hardware,
the software release, the names and sources of
configuration files, and the boot images. Verify that
the list includes the newly configured Two-port
STM-1/OC-3 Channelized E1/T1 line card ports and
interfaces.
Step 2
Router# show controllers sonet slot/port [brief |
tabular]
Displays an exhaustive list of information about a
SONET port, including information about all the
configured channels.
When framing is SDH and AUG mapping is AU-4,
the slot/port argument takes the form:
slot/port.au-4-number/tug-3-number/tug-2-number/
e1-line-number
When framing is SDH and AUG mapping is AU-3,
the slot/port argument takes the form:
slot/port.au-3-number/tug-2-number/t1-line-number
When framing is SONET and the mode is CT3, the
slot/port argument takes the form:
slot/port.sts1-number/t1-line-number
When framing is SONET and the mode is VT1.5, the
slot/port argument takes the form:
slot/port.sts1-number/vtg-number/t1-line-number
Step 3
Router# show interfaces
Displays status and configuration of interfaces.
Step 4
Router# show protocols
Displays information about the protocols configured
for the system as a whole, and for specific interfaces.
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Monitoring and Maintaining Operation
Monitoring and Maintaining Operation
See the following sections for monitoring and maintenance tasks for the Two-port STM-1/OC-3
Channelized E1/T1 line card.
•
Using clear Commands on Serial Interfaces, page 13
•
Using Loopbacks, page 13
•
Using BER Tests, page 14
Using clear Commands on Serial Interfaces
Command
Purpose
Router# clear interface serial
slot/port.path:channel-group-number
Reset the hardware logic for a serial interface, where
path depends on the interface configuration:
When framing is SDH and AUG mapping is AU-4,
path takes the form:
au-4-number/tug-3-number/tug-2-number/e1-linenumber
When framing is SDH and AUG mapping is AU-3,
path takes the form:
au-3-number/tug-2-number/t1-line-number
When framing is SONET and the mode is CT3, path
takes the form:
sts1-number/t1-line-number
When framing is SONET and the mode is VT1.5,
path takes the form:
sts1-number/vtg-number/t1-line-number
Router# clear counters serial
slot/port.path:channel-group-number
Initialize the counters for a serial interface.
Using Loopbacks
The Two-port STM-1/OC-3 Channelized E1/T1 line card supports loopback tests at the OC-3/STM-1
port level, as well as at the T3, T1, and E1 link level. To set a loopback at one of those levels, use one of
the following commands:
Command
Purpose
Router (config-controller)# loopback [local | network]
Set a loopback to test the OC-3/STM-1 port.
Router (config-ctrlr-sts1)# t3 loopback [local | network |
remote]
Set a loopback to test a T3 link.
Router (config-ctrlr-sts1)# vtg number t1 t1-line-number
loopback [local | network {line | payload} | remote {line fdl
{ansi | bellcore} | payload [fdl] [ansi]}]
In vt-15 mode, set a loopback to test a T1 link.
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Monitoring and Maintaining Operation
Command
Purpose
Router (config-ctrlr-sts1)# t1 t1-line-number loopback [local
| network {line | payload} | remote {line fdl {ansi |
bellcore} | payload [fdl] [ansi]}]
In ct3 mode, set a loopback to test a T1 link.
Router (config-ctrlr-au3)# tug-2 tug-2-number t1
t1-line-number loopback [local | network {line | payload} |
remote {line fdl {ansi | bellcore} | payload [fdl] [ansi]}]
When framing is SDH with AU-3 AUG mapping,
set a loopback to test a T1 link.
Router (config-ctrlr-tug3)# tug-2 tug-2-number e1
e1-line-number loopback {local | network {line | payload}}
When framing is SDH with AU-4 AUG mapping,
set a loopback to test a E1 link.
Using BER Tests
The Two-port STM-1/OC-3 Channelized E1/T1 line card supports BER tests at the T1 and E1 link level.
To enable a BERT at one of those levels, use one of the following commands:
Command
Purpose
Router (config-ctrlr-sts1)# vtg vtg-number t1 t1-line-number
bert pattern pattern interval time
In vt-15 mode, enable a BERT on a T1 link.
Router (config-ctrlr-sts1)# t1 t1-line-number bert pattern
pattern interval time
In ct3 mode, enable a BERT on a T1 link.
Router (config-ctrlr-au3)# tug-2 tug-2-number t1
t1-line-number bert pattern pattern interval time
When framing is SDH with AU-3 AUG mapping,
enable a BERT on a T1 link.
Router (config-ctrlr-tug3)# tug-2 tug-2-number e1
e1-line-number bert pattern pattern interval time
When framing is SDH with AU-4 AUG mapping,
enable a BERT on an E1 link.
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Configuration Examples
Configuration Examples
This section provides the following configuration examples:
•
Configuring for SONET Framing and CT3 Mode of Operation, page 15
•
Configuring for SONET Framing and VT1.5 Mode of Operation, page 16
•
Configuring for SDH Framing with AU-4 AUG Mapping, page 17
Configuring for SONET Framing and CT3 Mode of Operation
In the following example, port 0 of a Two-port STM-1/OC-3 Channelized E1/T1 line card in slot 2 of a
Cisco 12000 series Internet Router is configured for SONET framing with CT3 mode of operation. This
example is an excerpt from a larger example that configures 168 T1s for CT3 and VT1.5 operation, and
shows only the configuration for the first STS-1 (one of three).
controller SONET 2/0
clock source line
framing sonet
!
sts-1 1
mode ct3
t3 framing m23
t3 clock source line
t1 1 clock source Line
t1 1 channel-group 0 timeslots 1-24
t1 2 clock source Line
t1 2 channel-group 0 timeslots 1-24
t1 3 clock source Line
t1 3 channel-group 0 timeslots 1-24
.
.
.
t1 28 clock source Line
t1 28 channel-group 0 timeslots 1-24
!
!
interface Serial2/0.1/1:0
! STS-1 1, T1 1
ip address 20.141.20.1 255.255.255.252
no ip directed-broadcast
.
.
.
!
interface Serial2/0.1/28:0
! STS-1 1, T1 28
ip address 20.141.20.109 255.255.255.252
no ip directed-broadcast
(Additional display text is not shown.)
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Configuration Examples
Configuring for SONET Framing and VT1.5 Mode of Operation
In the following example, port 1 of a Two-port STM-1/OC-3 Channelized E1/T1 line card in slot 2 is
configured for SONET framing with VT1.5 mode of operation. This example is an excerpt from a larger
example that configures 168 T1s for CT3 and VT1.5 operation, and shows only the configuration for the
first STS-1 (one of three).
controller SONET 2/1
clock source line
framing sonet
!
sts-1 1
mode vt-15
vtg 1 t1 1 clock source Line
vtg 1 t1 1 channel-group 0 timeslots 1-24
vtg 1 t1 2 clock source Line
vtg 1 t1 2 channel-group 0 timeslots 1-24
vtg 1 t1 3 clock source Line
vtg 1 t1 3 channel-group 0 timeslots 1-24
vtg 1 t1 4 clock source Line
vtg 1 t1 4 channel-group 0 timeslots 1-24
.
.
.
vtg 7 t1 1 clock source Line
vtg 7 t1 1 channel-group 0 timeslots 1-24
vtg 7 t1 2 clock source Line
vtg 7 t1 2 channel-group 0 timeslots 1-24
vtg 7 t1 3 clock source Line
vtg 7 t1 3 channel-group 0 timeslots 1-24
vtg 7 t1 4 clock source Line
vtg 7 t1 4 channel-group 0 timeslots 1-24
!
!
interface Serial2/1.1/1/1:0
!
ip address 20.141.23.1 255.255.255.252
no ip directed-broadcast
.
.
.
!
interface Serial2/1.1/1/4:0
!
ip address 20.141.23.13 255.255.255.252
no ip directed-broadcast
.
.
.
!
interface Serial2/1.1/7/1:0
!
ip address 20.141.23.97 255.255.255.252
no ip directed-broadcast
.
.
.
!
interface Serial2/1.1/7/4:0
!
ip address 20.141.23.109 255.255.255.252
no ip directed-broadcast
(Additional display text is not shown.)
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STS-1 1, VTG 1, T1 4
STS-1 1, VTG 7, T1 1
STS-1 1, VTG 7, T1 4
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Configuration Examples
Configuring for SDH Framing with AU-4 AUG Mapping
In the following example, port 0 of a Two-port STM-1/OC-3 Channelized E1/T1 line card in slot 2 is
configured for SDH framing with AU-4 AUG mapping. This example is excerpted from a larger example
that configures 126 E1s, and shows only the configuration of the first TUG-3.
controller SONET 2/0
clock source line
framing sdh
aug mapping au-4
!
au-4 1 tug-3 1
mode c-12
tug-2 1 e1 1 clock source Line
tug-2 1 e1 1 channel-group 0 timeslots
tug-2 1 e1 2 clock source Line
tug-2 1 e1 2 channel-group 0 timeslots
tug-2 1 e1 3 clock source Line
tug-2 1 e1 3 channel-group 0 timeslots
.
.
.
tug-2 7 e1 1 clock source Line
tug-2 7 e1 1 channel-group 0 timeslots
tug-2 7 e1 2 clock source Line
tug-2 7 e1 2 channel-group 0 timeslots
tug-2 7 e1 3 clock source Line
tug-2 7 e1 3 channel-group 0 timeslots
!
interface Serial2/0.1/1/1/1:0
ip address 20.141.20.1 255.255.255.252
no ip directed-broadcast
ip load-sharing per-packet
.
.
.
interface Serial2/0.1/1/7/1:0
ip address 20.141.20.73 255.255.255.252
no ip directed-broadcast
!
interface Serial2/0.1/1/1/2:0
ip address 20.141.20.5 255.255.255.252
no ip directed-broadcast
ip load-sharing per-packet
.
.
.
interface Serial2/0.1/1/7/2:0
ip address 20.141.20.77 255.255.255.252
no ip directed-broadcast
!
interface Serial2/0.1/1/1/3:0
ip address 20.141.20.9 255.255.255.252
no ip directed-broadcast
.
.
.
interface Serial2/0.1/1/7/3:0
ip address 20.141.20.81 255.255.255.252
no ip directed-broadcast
1-31
1-31
1-31
1-31
1-31
1-31
! AU-4 1, TUG-3 1, TUG-2 1, E1 1
! AU-4 1, TUG-3 1, TUG-2 7, E1 1
! AU-4 1, TUG-3 1, TUG-2 1, E1 2
! AU-4 1, TUG-3 1, TUG-2 7, E1 2
! AU-4 1, TUG-3 1, TUG-2 1, E1 3
! AU-4 1, TUG-3 1, TUG-2 7, E1 3
(Additional display text is not shown.)
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Command Reference
Command Reference
This section documents new or modified commands. All other commands used with this feature are
documented in the Cisco IOS Release 12.0 command reference publications.
•
au-3
•
au-4 tug-3
•
aug mapping
•
clear counters serial
•
clear interface serial
•
clock source (controller)
•
controller sonet
•
framing (controller)
•
loopback (controller)
•
mode
•
overhead c2
•
overhead j0
•
overhead j1
•
overhead s1s0
•
report
•
show controllers sonet
•
show interfaces serial
•
sts-1
•
t1 bert pattern
•
t1 channel-group timeslots
•
t1 clock source
•
t1 fdl ansi
•
t1 framing
•
t1 loopback
•
t3 clock source
•
t3 equipment loopback
•
t3 framing
•
t3 loopback
•
threshold
•
tug-2 e1 bert pattern
•
tug-2 e1 channel-group timeslots
•
tug-2 e1 clock source
•
tug-2 e1 framing
•
tug-2 e1 loopback
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Command Reference
•
tug-2 e1 national bits
•
tug-2 e1 unframed
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au-3
au-3
To enter the AU-3 path configuration mode to configure an AU-3, use the au-3 controller configuration
command. To remove the AU-3 configuration, use the no form of this command.
au-3 au-3-number
no au-3 au-3-number
Syntax Description
au-3-number
Defaults
No default behavior or values.
Command Modes
Controller configuration
Command History
Release
Usage Guidelines
A number in the range from 1 to 3.
Modification
12.0(14)S
This command was introduced.
12.0(17)S
This command was modified to support the Two-port STM-1/OC-3
Channelized E1/T1 line card.
An AUG of an STM-1 can be derived from either AU-3s or an AU-4. In ANSI mapping, the Low Order
payloads are aggregated into a VC-3 High Order Path. An AU pointer is added to the VC-3 to create an
AU-3 (Administrative Unit type 3). Three such AU-3s are then synchronously multiplexed into an AUG
(AU group). The multiplexing scheme is as follows:
… VC-3 <–> AU-3 (x3) <–> AUG <–> STM-1
To map the AUG to an AU-3, use the aug mapping au-3 controller configuration command.
Configuring the au-3 command enters AU-3 configuration mode, and creates a serial interface with the
following name format:
slot/port.au-3-number/tug-2-number/t1-number:channel-group-number
The aug mapping and au-3 commands are available only when SDH framing is configured.
Examples
In the example that follows, the second AU-3 in port 0 of the Two-port STM-1/OC-3 Channelized E1/T1
line card in slot 4 of a Cisco 12000 series Internet Router is selected for configuration:
Router(config)# controller
Router(config-controller)#
Router(config-controller)#
Router(config-controller)#
Router(config-ctrlr-au3)#
sonet 4/0
framing sdh
aug mapping au-3
au-3 2
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au-3
Related Commands
Command
Description
aug mapping
Specify the AUG mapping when SDH framing is selected.
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au-4 tug-3
au-4 tug-3
To configure a TUG-3, use the au-4 tug-3 controller configuration command to enter TUG-3
configuration mode, which is indicated by a change in the command prompt. To remove a TUG-3
configuration, use the no form of this command.
au-4 au-4-number tug-3 tug-3-number
no au-4 au-4-number tug-3 tug-3-number
Syntax Description
au-4-number
A number in the range from 1 to N, where N is the STM level. (For the
Two-port STM-1/OC-3 Channelized E1/T1 line card, N is always 1.)
tug-3-number
A number in the range from 1 to 3.
Defaults
No default behavior or values.
Command Modes
Controller configuration
Command History
Release
Modification
12.0(14)S
This command was introduced.
12.0(17)S
This command was modified to support the Two-port STM-1/OC-3
Channelized E1/T1 line card.
Usage Guidelines
An AUG of an STM-1 can be derived from either AU-3s or an AU-4. In ETSI mapping, the Low Order
payloads are aggregated into a VC-4 High Order Path. An AU pointer is added to the VC-4 to create an
AU-4 (Administrative Unit type 4). One AU-4 is “multiplexed” into an AUG (AU group), which is to
say, the AUG is, in fact, equivalent to an AU-4. The multiplexing scheme is as follows:
… TUG-3 (x3) <–> VC-4 <–> AU-4 (x1) <–> STM-1
To map the AUG to an AU-4, use the aug mapping au-4 controller configuration command.
Configuring the au-4 tug-3 command enters TUG-3 configuration mode, and creates a serial interface
with the following name format:
slot/port.au-4-number/tug-3-number/tug-2-number/e1-number:channel-group-number
The aug mapping and au-4 tug-3 commands are available only when SDH framing is configured.
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au-4 tug-3
Examples
In the following example, the second TUG-3 of the AU-4 in port 0 of the Two-port STM-1/OC-3
Channelized E1/T1 line card in slot 4 of a Cisco 12000 series Internet Router is selected for
configuration:
Router(config)# controller
Router(config-controller)#
Router(config-controller)#
Router(config-controller)#
Router(config-ctrlr-tug3)#
Related Commands
sonet 4/0
framing sdh
aug mapping au-4
au-4 1 tug-3 2
Command
Description
aug mapping
Specify the AUG mapping when SDH framing is selected.
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aug mapping
aug mapping
To specify the AUG mapping when SDH framing is selected, use the aug mapping controller
configuration command. To restore the default AUG mapping, use the no form of this command.
aug mapping {au-3 | au-4}
no aug mapping {au-3 | au-4}
Syntax Description
au-3
Select AU-3 AUG mapping.
au-4
Select AU-4 AUG mapping. This is the default.
Defaults
AU-4 mapping
Command Modes
Controller configuration
Command History
Release
Modification
12.0(14)S
This command was introduced.
12.0(17)S
This command was modified to support the Two-port STM-1/OC-3
Channelized E1/T1 line card.
Usage Guidelines
In SDH, there are two possible mapping/multiplexing schemes for most payload types: ANSI and ETSI.
In ANSI mapping, the Low Order payloads are aggregated into a VC-3 High Order Path. An AU pointer
is added to the VC-3 to create an AU-3 (Administrative Unit type 3). Three such AU-3s are then
synchronously multiplexed into an AUG (AU group). The multiplexing scheme is as follows:
… VC-3 <–> AU-3 (x3) <–> AUG <–> STM-1
SDH ANSI mapping is very similar to the SONET frame structure.
In ETSI mapping, the Low Order payloads are aggregated into a VC-4 High Order Path. An AU pointer
is added to the VC-4 to create an AU-4 (Administrative Unit type 4). One AU-4 is “multiplexed” into an
AUG (AU group), which is to say, the AUG is, in fact, equivalent to an AU-4. The multiplexing scheme
is as follows:
… TUG-3 (x3) <–> VC-4 <–> AU-4 (x1) <–> STM-1
This command is available only when SDH framing is configured.
Examples
The example that follows selects AU-3 mapping for port 1 of the Two-port STM-1/OC-3 Channelized
E1/T1 line card in slot 2 of a Cisco 12000 series Internet Router:
Router(config)# controller sonet 2/1
Router(config-controller)# framing sdh
Router(config-controller)# aug mapping au-3
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aug mapping
Related Commands
Command
Description
framing (controller)
Determine whether the port is to be used in SONET mode or SDH mode.
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clear counters serial
clear counters serial
To clear the counters for a serial interface configured on the Two-port STM-1/OC-3 Channelized E1/T1
line card, use the clear counters serial EXEC command.
clear counters serial slot/port.path:channel-group
Syntax Description
slot
The chassis slot where the Two-port STM-1/OC-3 Channelized E1/T1 line
card is installed.
port
The physical port on the Two-port STM-1/OC-3 Channelized E1/T1 line
card. Either 0 or 1.
.path
Depends on the interface configuration:
When framing is SDH and AUG mapping is AU-4, path takes the form:
au-4-number/tug-3-number/tug-2-number/e1-line-number
When framing is SDH and AUG mapping is AU-3, path takes the form:
au-3-number/tug-2-number/t1-line-number
When framing is SONET and the mode is CT3, path takes the form:
sts1-number/t1-line-number
When framing is SONET and the mode is VT1.5, path takes the form:
sts1-number/vtg-number/t1-line-number
:channel-group
Channel group identifier: 0 to 30 for an E1 line; 0 to 23 for a T1 line.
Defaults
No default behavior or values.
Command Modes
EXEC
Command History
Release
Modification
10.0
This command was introduced.
12.0(17)S
This command was modified to support the Two-port STM-1/OC-3
Channelized E1/T1 line card.
Usage Guidelines
Note
The clear counters serial command resets the counters for a serial interface. To reset the interface
hardware, use the clear interface serial command. To check the status of the interface, use the show
interfaces serial command.
As long as the serial interface is available, you can enter this command immediately after using the
enable command to enter privileged EXEC mode.
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clear counters serial
Examples
The following example clears the counters for serial interface 3/1.1/1/1:1, which is configured in the
context of SONET framing in vt-15 mode. The number sequence .1/1/1:1 corresponds to the
sts-1-number/vtg-number/t1-line-number:channel-group number sequence.
Router# clear counters serial 3/1.1/1/1:1
Clear “show interface” counters on this interface [confirm]
Router#
Related Commands
Command
Description
clear interface serial
Resets the interface hardware.
show interfaces
Displays statistics for all interfaces configured on the router or access
server.
show interfaces serial
Displays information about a serial interface.
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clear interface serial
clear interface serial
To reset the hardware logic for a serial interface configured on the Two-port STM-1/OC-3 Channelized
E1/T1 line card, use the clear interface serial EXEC command.
clear interface serial slot/port.path:channel-group
Syntax Description
slot
The chassis slot where the Two-port STM-1/OC-3 Channelized E1/T1 line
card is installed.
port
The physical port on the Two-port STM-1/OC-3 Channelized E1/T1 line
card. Either 0 or 1.
.path
Depends on the interface configuration:
When framing is SDH and AUG mapping is AU-4, path takes the form:
au-4-number/tug-3-number/tug-2-number/e1-line-number
When framing is SDH and AUG mapping is AU-3, path takes the form:
au-3-number/tug-2-number/t1-line-number
When framing is SONET and the mode is CT3, path takes the form:
sts1-number/t1-line-number
When framing is SONET and the mode is VT1.5, path takes the form:
sts1-number/vtg-number/t1-line-number
:channel-group
Channel group identifier: 0 to 30 for an E1 line; 0 to 23 for a T1 line.
Defaults
No default behavior or values.
Command Modes
EXEC
Command History
Release
Modification
10.0
This command was introduced.
12.0(17)S
This command was modified to support the Two-port STM-1/OC-3
Channelized E1/T1 line card.
Usage Guidelines
Note
The clear interface serial command resets the interface hardware. To reset the counters for an interface,
use the clear counters serial command. To check the status of the interface, use the show interfaces
serial command.
As long as the serial interface is available, you can enter this command immediately after using the
enable command to enter privileged EXEC mode.
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clear interface serial
Examples
The following example clears serial interface 3/1.1/1/1:1, which is configured in the context of SONET
framing in vt-15 mode. The number sequence .1/1/1/1:1 corresponds to the
sts-1-number/vtg-number/t1-line-number:channel-group number sequence.
Router# clear interface serial 3/1.1/1/1:1
Router#
Related Commands
Command
Description
clear counters serial
Clears the interface counters.
show interfaces
Displays statistics for all interfaces configured on the router or access
server.
show interfaces serial
Displays information about a serial interface.
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clock source (controller)
clock source (controller)
To specify the clock source for the selected OC-3/STM-1 port on the Two-port STM-1/OC-3
Channelized E1/T1 line card, use the clock source controller configuration command. To reset the clock
source to the default, use the no form of this command.
clock source {internal | line}
no clock source {internal | line}
Syntax Description
internal
Internal clock source.
line
Network clock source. This is the default.
Defaults
Line
Command Modes
Controller configuration
Command History
Release
Modification
10.3
This command was introduced.
12.0(17)S
This command was modified to support the Two-port STM-1/OC-3
Channelized E1/T1 line card.
Usage Guidelines
Typically, an OC-3/STM-1 port on the Two-port STM-1/OC-3 Channelized E1/T1 line card is connected
to a SONET or SDH add/drop multiplexer (ADM). In this application, Cisco recommends using the
default setting of clock source line, because:
•
The clock source used by the SONET/SDH network is of higher accuracy than the internal clock
source on the Two-port STM-1/OC-3 Channelized E1/T1 line card.
•
The SONET/SDH network is designed for optimal operation in synchronous mode, where all clocks
used in the network can be traced to a single high-accuracy clock source. Using the internal clock
on the Two-port STM-1/OC-3 Channelized E1/T1 line card port introduces an independent clock
source into the network, and may cause synchronization-related anomalies to be detected by the
SONET/SDH network elements.
When configured for line clocking, the Two-port STM-1/OC-3 Channelized E1/T1 line card port will
automatically default to internal clocking if the line clock source is considered unusable for any of the
following reasons:
•
The port detects a Loss of Signal (SLOS) defect.
•
The port detects a Loss of Frame (LOF) defect.
•
The port detects a Section (RS) Loss of Frame (SLOF) defect.
•
The port detects a Line (MS) Alarm Indication Signal (LAIS) defect.
•
The port receives the “Do not use for synchronization” code in byte S1 of the Line (MS) overhead.
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clock source (controller)
•
Note
Examples
The port has been put into the local loopback mode through the use of the loopback local controller
command. When the loopback is cleared, the port reverts to using the line clock source.
The OC-3/STM-1 port on the Two-port STM-1/OC-3 Channelized E1/T1 line card always sends the
“Do not use for synchronization” code in byte S1 of the Line (MS) overhead toward the directly
connected ADM.
The following example selects the internal clock source:
Router(config)# controller sonet 6/0
Router(config-controller)# clock source internal
Router(config-controller)#
Related Commands
Command
Description
t1 clock source
Set the internal or line (network) clock source for a T1 line on the Two-port
STM-1/OC-3 Channelized E1/T1 line card.
t3 clock source
Set the clock source for the selected T3 link.
tug-2 e1 clock source
Specify where the clock source is obtained for an E1 line.
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controller sonet
controller sonet
To select the physical port to configure on the Two-port STM-1/OC-3 Channelized E1/T1 line card, use
the controller sonet global configuration command. To delete the defined controller, use the no form of
this command.
controller sonet slot/port
no controller sonet slot/port
Syntax Description
slot
The chassis slot where the Two-port STM-1/OC-3 Channelized E1/T1 line
card is installed.
port
The physical port on the Two-port STM-1/OC-3 Channelized E1/T1 line
card. Either 0 or 1.
Defaults
No default behavior or values.
Command Modes
Global configuration
Command History
Release
Modification
12.0(14)S
This command was introduced.
12.0(17)S
This command was modified to support the Two-port STM-1/OC-3
Channelized E1/T1 line card.
Usage Guidelines
This command is used to select an STM-1/OC-3 physical port so that additional channelization
parameters for its associated T3, T1, or E1 links can be configured.
Examples
The example that follows selects port 1 of the Two-port STM-1/OC-3 Channelized E1/T1 line card in
slot 3 of a Cisco 12000 series Internet Router:
Router(config)# controller sonet 3/1
Router(config-controller)#
Related Commands
Command
Description
show controllers sonet Displays information that is specific to SONET controllers in a Cisco 12000
series Internet Router.
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framing (controller)
framing (controller)
To determine whether the port is to be used in SONET mode or SDH mode, use the framing controller
configuration command. To reset the framing mode to the default, use the no form of this command.
framing {sonet | sdh}
no framing
Syntax Description
sonet
SONET mode. This is the default.
sdh
SDH mode.
Defaults
SONET
Command Modes
Controller configuration
Command History
Release
Modification
12.0(14)S
This command was introduced.
12.0(17)S
This command was modified to support the Two-port STM-1/OC-3
Channelized E1/T1 line card.
Usage Guidelines
Normally, both OC-3/STM-1 ports should be configured to the same framing type: either both ports
configured for SONET, or both ports configured for SDH. The specific restriction applies to mixing E1
and T1 channels on one line card, which is not supported. If you attempt to violate this restriction, the
system will display a warning message.
Examples
The following example selects SDH framing for port 1 of the Two-port STM-1/OC-3 Channelized E1/T1
line card in slot 3 of a Cisco 12000 series Internet Router:
Router(config)# controller sonet 3/1
Router(config-controller)# framing sdh
Router(config-controller)#
Related Commands
Command
Description
t1 framing
Specify the T1 framing format for a T1 line on the Two-port STM-1/OC-3
Channelized E1/T1 line card.
t3 framing
Specify the framing type for the T3 link.
tug-2 e1 framing
Specify the E1 framing format for an E1 line on the Two-port STM-1/OC-3
Channelized E1/T1 line card.
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loopback (controller)
loopback (controller)
To set a SONET/SDH port loopback on the Two-port STM-1/OC-3 Channelized E1/T1 line card, use the
loopback controller configuration command. To remove a loopback, use the no form of this command.
loopback [local | network]
no loopback [local | network]
Syntax Description
local
Local (diagnostic) loopback mode.
network
Network (line) loopback mode.
Defaults
No loopback is set.
Command Modes
Controller configuration
Command History
Release
Modification
12.0(17)S
This command was modified to support the Two-port STM-1/OC-3
Channelized E1/T1 line card.
Usage Guidelines
Use the loopback local controller configuration command to diagnose problems with the Two-port
STM-1/OC-3 Channelized E1/T1 line card when it is isolated from the network cables.
Network loopback loops the entire STM-1/STS-3 frame back toward the network and can be used to
diagnose problems with cables.
Examples
The following example shows how to configure the port for local loopback. The port is port 0 on a
Two-port STM-1/OC-3 Channelized E1/T1 line card in slot 6 of the Cisco 12000 series Internet Router:
Router(config)# controller sonet 6/0
Router(config-controller)# loopback local
Router(config-controller)#
The following example shows how to configure the port for network loopback. The port is port 0 on a
Two-port STM-1/OC-3 Channelized E1/T1 line card in slot 6 of the Cisco 12000 series Internet Router:
Router(config)# controller sonet 6/0
Router(config-controller)# loopback network
Router(config-controller)#
Related Commands
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loopback (controller)
Command
Description
t1 loopback
Set a loopback on a T1 line on the Two-port STM-1/OC-3 Channelized
E1/T1 line card.
t3 loopback
Set a loopback on a T3 link on the Two-port STM-1/OC-3 Channelized
E1/T1 line card.
tug-2 e1 loopback
Set a loopback on an E1 line on the Two-port STM-1/OC-3 Channelized
E1/T1 line card.
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mode
mode
To specify the mode of operation of an STS-1, use the mode STS-1 path configuration command. To
restore the default, use the no form of this command.
mode {ct3 | vt-15}
no mode {ct3 | vt-15}
Syntax Description
ct3
Channelized T3. This is the default.
vt-15
Virtual Tributary Group structure VT1.5.
Defaults
ct3
Command Modes
STS-1 path configuration
Command History
Release
Modification
12.0(14)S
This command was introduced.
12.0(17)S
The ct3 and vt-15 keywords were added for use with the Two-port
STM-1/OC-3 Channelized E1/T1 line card.
Usage Guidelines
When you select ct3, the specified STS-1 will carry a DS3 signal divided into 28 T1s (multiplexed
asynchronously).
When you select vt-15, the specified STS-1 is divided into seven virtual tributary groups (VTGs). Each
of those VTGs is then divided into four VT1.5s, each carrying one T1.
Note
Under SDH framing with AUG mapping set to AU-4, the VC-4 High Order Path comprises three
TUG-3s. Each TUG-3 can be configured to carry up to 21 E1s, mapped into VC-12s. The mode of
operation of a TUG-3 is not configurable, and defaults to mode c-12.
Under SDH framing with AUG mapping set to AU-3, each VC-3 High Order Path can be configured
to carry up to 28 T1s, mapped into VC-11s. The mode of operation of an AU-3 is not configurable,
and defaults to mode c-11.
Examples
The following example selects ct3 as the STS-1 mode of operation:
Router(config)# controller
Router(config-controller)#
Router(config-controller)#
Router(config-ctrlr-sts1)#
sonet 4/0
framing sonet
sts-1 3
mode ct3
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mode
Related Commands
Command
Description
sts-1
Enter STS-1 configuration mode to configure an STS-1.
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overhead c2
overhead c2
To set the SONET/SDH Path Signal Label value, use the overhead c2 controller configuration
command. To restore the default value, use the no form of this command.
overhead c2 number
no overhead c2 number
Syntax Description
c2
Sets the high order path signal label indicator.
number
Specifies byte value in the range from 0 to 255.
Defaults
For vt15, c11, and c12 modes, the default value of c2 is 02; for the ct3 mode, the default value of c2 is 04.
Command Modes
SDH framing with AU-4 mapping
Controller configuration
SDH with AU-3 mapping
AU-3 path configuration
SONET framing with VT1.5
Controller configuration
Command History
Usage Guidelines
Release
Modification
12.0(17)S
This command was introduced to support the Two-port STM-1/OC-3
Channelized E1/T1 line card.
The Signal Label field occupies one byte (C2) of the SONET STS Path overhead and the SDH High
Order Path overhead. It is used to indicate the type of contents carried in the SONET Synchronous
Payload Envelope (SPE) or SDH High Order Virtual Container (HOVC).
Setting the Path Signal Label affects both the Transmitted (sent) value and the Expected value of the C2
overhead byte.
Examples
The following example sets the C2 value in SDH with AU-4:
Router(config)# controller sonet 6/0
Router(config-controller)# au-4 1 overhead c2 98
Router(config-controller)#
The following example sets the C2 value in SDH with AU-3:
Router(config)# controller sonet 6/0
Router(config-controller)# au-3 3
Router(config-ctrlr-au3)# overhead c2 98
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overhead c2
Router(config-ctrlr-au3)#
The following example sets the C2 value in SONET:
Router(config)# controller sonet 6/0
Router(config-controller)# sts-1 3
Router(config-ctrlr-sts1)# overhead c2 98
Router(config-ctrlr-sts1)#
Related Commands
Command
Description
overhead j0
Specifies the Section (RS) Trace identifier (J0).
overhead j1
Configures the message length and the message text of the STS/High Order
Path Trace identifier (J1).
overhead s1s0
Sets the values of the S1 and S0 bits of H1 Administrative Unit (AU) pointer
byte.
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overhead j0
overhead j0
To specify the Section (RS) Trace identifier (J0), use the overhead j0 controller configuration command.
To restore the default value, use the no form of this command.
overhead j0 number
no overhead j0 number
Syntax Description
j0
Sets the Section (RS) Trace identifier.
number
Specifies byte value in the range from 0 to 255. The default is 1.
Defaults
The default is 1.
Command Modes
Controller configuration
Command History
Release
Modification
12.0(17)S
This command was introduced to support the Two-port STM-1/OC-3
Channelized E1/T1 line card.
Usage Guidelines
Section trace is a maintenance feature of SONET. One byte (J0) of the Section overhead associated with
each SONET frame is used to carry information identifying the transmitting equipment.
Examples
The following example sets the Section Trace identifier to 82
Router(config-controller)# overhead j0 82
Router(config-controller)#
Related Commands
Command
Description
overhead c2
Sets the SONET/SDH Path Signal Label value.
overhead j1
Configures the message length and the message text of the STS/High Order
Path Trace identifier (J1).
overhead s1s0
Sets the values of the S1 and S0 bits of H1 Administrative Unit (AU) pointer
byte.
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overhead j1
overhead j1
To configure the message length and the message text of the STS/High Order Path Trace identifier (J1),
use the overhead j1 configuration command. Where you configure the Path Trace identifier depends on
the framing (SDH or SONET) and the AUG mapping. In SDH with AU-4 mapping, the Path Trace
identifier is configured at the SONET controller level. In SDH with AU-3 mapping or in SONET
framing, the Path Trace identifier is configured at the path level. To restore the default value, use the no
form of this command.
overhead j1 {length {16 | 64}} | {message text}
no overhead j1 {length {16 | 64}} | {message text}
Syntax Description
length {16 | 64}
Length of the message in characters (bytes).
message text
Message text.
Defaults
The default message length is 16 for SDH framing, and 64 for SONET framing.
Command Modes
SDH framing with AU-4 mapping
Controller configuration
SDH framing with AU-3 mapping, or SONET framing
Path configuration
Command History
Usage Guidelines
Release
Modification
12.0(17)S
This command was introduced to support the Two-port STM-1/OC-3
Channelized E1/T1 line card.
Path trace is a maintenance feature of SONET/SDH. One byte (J1) of the Path overhead associated with
each path in the SONET/SDH frame is used to carry information identifying the originating Path
Terminating Equipment (PTE).
Where you configure the Path Trace identifier depends on the framing (SDH or SONET) and the AUG
mapping. In SDH with AU-4 mapping, the Path Trace identifier is configured at the SONET controller
level. In SDH with AU-3 mapping or in SONET framing, the Path Trace identifier is configured at the
path level.
In accordance with SONET and SDH standard requirements, the Path Trace message you enter is
manipulated as follows:
•
If you select a message length of 16, the actual message length can be up to 15 characters. An
additional byte, prepended to the message, contains the result of a CRC7 calculated on the message.
If the actual message text is fewer than 15 characters, the message text is padded to its full length
with NULL characters.
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overhead j1
•
Examples
If you select a message length of 64 and the actual message text is fewer than 62 characters, the
message text is padded with NULL characters. The last two byte positions, 63 and 64, are always
CR/LF (0x0D/0x0A).
The following example shows J1 configuration in SDH framing with AU-4 AUG mapping. The first
overhead j1 command sets the message length to 16; the second overhead j1 command specifies the
message text:
Router(config-controller)# au-4 1 overhead j1 length 16
Router(config-controller)# au-4 1 overhead j1 message metro_SF
Router(config-controller)#
The following example shows J1 configuration in SDH framing with AU-3 AUG mapping. The first
overhead j1 command sets the message length to 16; the second overhead j1 command specifies the
message text:
Router(config)# controller sonet 4/0
Router(config-controller)# au-3 3
Router(config-ctrlr-au3)# overhead j1 length 16
Router(config-ctrlr-au3)# overhead j1 message metro_LA
Router(config-ctrlr-au3)#
The following example shows J1 configuration in SONET framing in STS-1 mode. The first overhead
j1 command sets the message length to 16; the second overhead j1 command specifies the message text:
Router(config)# controller
Router(config-controller)#
Router(config-ctrlr-sts1)#
Router(config-ctrlr-sts1)#
Router(config-ctrlr-sts1)#
Related Commands
sonet 4/0
sts-1 3
overhead j1 length 64
overhead j1 message metro_washington gsr_0057/4/3
Command
Description
overhead c2
Sets the SONET/SDH Path Signal Label value.
overhead j0
Specifies the Section (RS) Trace identifier (J0).
overhead s1s0
Sets the values of the S1 and S0 bits of H1 Administrative Unit (AU) pointer
byte.
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overhead s1s0
overhead s1s0
To set the values of the S1 and S0 bits of H1, use the overhead s1s0 controller configuration command.
To restore the default value, use the no form of this command.
overhead s1s0 number
no overhead s1s0 number
Syntax Description
s1s0
Specifies bits S1 and S0 of H1.
number
Specifies bit value in the range from 0 to 3 (00 to 11).
Defaults
The default is 0 for SONET framing and 2 for SDH framing.
Command Modes
Controller configuration
Command History
Release
Modification
12.0(17)S
This command was introduced to support the Two-port STM-1/OC-3
Channelized E1/T1 line card.
Usage Guidelines
The S1 and S0 bits are located in the H1 Administrative Unit (AU) pointer byte, bit locations 5 and 6.
For the Two-port STM-1/OC-3 Channelized E1/T1 line card, the values for these bits are set
automatically according to the framing type selected for the SONET port (00 for SONET; 10 for SDH).
While the settings for these bits rarely need changing, you can change the values to ensure operability
with older or nonstandard equipment, or to ensure operability in one of the countries that uses these bit
values differently. For example, SDH equipment in Australia might use the value 01.
Examples
The following example sets the S1 and S0 bits to 2:
Router(config-controller)# overhead s1s0 2
Router(config-controller)#
Related Commands
Command
Description
overhead c2
Sets the SONET/SDH Path Signal Label value.
overhead j0
Specifies the Section (RS) Trace identifier (J0).
overhead j1
Configures the message length and the message text of the STS/High Order
Path Trace identifier (J1).
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report
report
To enable reporting of selected alarm and signal events, use the report controller configuration
command. To disable reporting of alarm and signal events, use the no form of this command.
report {all | event}
no report {all | event}
Syntax Description
all
Enables all of the available alarm and signal events (see Table 1).
event
Enables reporting for the alarm or signal events listed in Table 1. The
following alarm and signal events individually: pais, plm, prdi, sd-ber,
lrdi, and lais.
Defaults
The following alarm and signal events are enabled and reported by default: slos, slof, plop, lom, b1-tca,
b2-tca, b3-tca, and sf-ber.
Command Modes
Controller configuration
Command History
Release
Modification
12.0(17)S
This command was introduced to support the Two-port STM-1/OC-3
Channelized E1/T1 line card.
Usage Guidelines
Table 1 lists the supported SONET/SDH alarm and signal events.
Table 1
SONET/SDH Alarm and Signal Events
Alarm/Signal
SONET Description
SDH Description
b1-tca
B1 BER Threshold Crossing Alarm
B1 BER Threshold Crossing Alarm
b2-tca
B2 BER Threshold Crossing Alarm
B2 BER Threshold Crossing Alarm
b3-tca
B3 BER Threshold Crossing Alarm
B3 BER Threshold Crossing Alarm
lais
Line Alarm Indication Signal (AIS-L)
Multiplexer Section Alarm Indication
Signal (MS-AIS)
lom
Loss of Multiframe VT (LOM-V)
Loss of Multiframe (LOM)
lrdi
Line Remote Defect Indication (RDI-L)
Multiplexer Section Remote Defect
Indication (MS-RDI)
pais
Path Alarm Indication Signal, or Alarm
Indication Signal—Path (AIS-P)
Administrative Unit Alarm Indication
Signal (AU-AIS)
plm
Path Payload Label Mismatch, or Payload High Order Path Payload Label Mismatch
Label Mismatch—Path (PLM-P)
(HP-PLM)
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report
Table 1
Examples
SONET/SDH Alarm and Signal Events
Alarm/Signal
SONET Description
SDH Description
plop
Path Loss of Pointer, or Loss of
Pointer—Path (LOP-P)
Administrative Unit Loss of Pointer
(AU-LOP)
prdi
Path Remote Defect Indication, or
High Order Path Remote Defect
Remote Defect Indication—Path (RDI-P) Indication (HP-RDI)
puneq
Path Unequipped (UNEQ-P)
High Order Path Unequipped
(HP-UNEQ)
sd-ber
Line BIP BER in excess of the Signal
Degrade (SD) threshold
Multiplexer Section BIP BER in excess of
the Signal Degrade (SD) threshold
sf-ber
Line BIP BER in excess of the Signal Fail Multiplexer Section BIP BER in excess of
(SF) threshold
the Signal Fail (SF) threshold
slof
Section Loss of Frame (LOF)
Regenerator Section Loss of Frame
(LOF)
slos
Section Loss of Signal (LOS)
Regenerator Section Loss of Signal
(LOS)
The following example enables reporting for pais for port 1 of the Two-port STM-1/OC-3 Channelized
E1/T1 line card in slot 3 of a Cisco 12000 series Internet Router:
Router(config)# controller sonet 3/1
Router(config-controller)# report pais
Related Commands
Command
Description
threshold
Sets threshold values for the BER Threshold Crossing Alarms available for
the Two-port STM-1/OC-3 Channelized E1/T1 line card.
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show controllers sonet
show controllers sonet
To display information that is specific to SONET controllers in a Cisco 12000 series Internet Router, use
the show controllers sonet privileged EXEC command.
SDH framing and AU-4 AUG mapping
show controllers sonet slot/port.au-4-number/tug-3-number/tug-2-number/e1-line-number [brief |
tabular]
SDH framing and AU-3 AUG mapping
show controllers sonet slot/port.au-3-number/tug-2-number/t1-number [brief | tabular]
SONET framing and CT3 mode
show controllers sonet slot/port.sts1-number/t1-number [brief | tabular]
SONET framing and VT-15 mode
show controllers sonet slot/port.sts1-number/vtg-number/t1-number [brief | tabular]
Syntax Description
Command Modes
slot
The chassis slot where the Two-port STM-1/OC-3 Channelized E1/T1 line
card is installed.
port
The physical port on the Two-port STM-1/OC-3 Channelized E1/T1 line
card. Either 0 or 1.
au-4-number
Always 1 for this line card.
tug-3-number
A number in the range from 1 to 3.
au-3-number
A number in the range from 1 to 3.
tug-2-number
A number in the range from 1 to 7.
e1-line-number
A number in the range from 1 to 3.
t1-line-number
A number in the range from 1 to 4 (in ct3 mode, where a channelized T3 is
mapped into the STS-1, t1-line-number is a number in the range from 1 to
28).
sts1-number
A number in the range from 1 to 3.
vtg-number
A number in the range from 1 to 7.
brief
Displays limited information for a SONET port or specific line.
tabular
Displays information for a SONET port or specific line in tabular format.
Privileged EXEC
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show controllers sonet
Command History
Examples
Release
Modification
11.2 GS
This command was introduced.
12.0(17)S
This command was modified to support the Two-port STM-1/OC-3
Channelized E1/T1 line card.
The following partial output example from the show controllers sonet slot/port privileged EXEC
command shows alarm and event information for the second SONET controller on the Two-port
STM-1/OC-3 Channelized E1/T1 line card in slot 4 of a Cisco 12000 series Internet Router:
Router# show controllers sonet 4/0
SONET 4/0 is up. (Configured for Locally Looped) Hardware is GSR 2 port
STM1/OC3 (channelized)
Applique type is Channelized OCx interface
Clock Source is Line
Medium info:
Type: Sonet, Line Coding: NRZ, Line Type: Short SM
SECTION:
LOF = 1
LOS = 1
BIP(B1) = 151620457
LINE:
AIS = 1
RDI = 0
REI = 8
BIP(B2) = 30
Active Defects: None
Active Alarms: None
Alarm reporting enabled for: SF SLOS SLOF B1-TCA B2-TCA B3-TCA
BER thresholds: SF = 10e-3 SD = 10e-6
TCA thresholds: B1 = 10e-6 B2 = 10e-6 B3 = 10e-6
High Order Path:
PATH 1:
AIS = 1
RDI = 1
LOP = 0
PSE = 4
LOM = 0
PLM = 1
Active Defects: None
REI = 9
NSE = 0
UNEQ = 0
BIP(B3) = 18
NEWPTR = 1
S1S0 = 00, C2 = 02
PATH TRACE BUFFER : STABLE
52
00
00
00
6F
00
00
00
75
00
00
00
74
00
00
00
65
00
00
00
72
00
00
00
34
00
00
00
2F
00
00
00
30
00
00
00
2F
00
00
00
31
00
00
00
PATH 2:
AIS = 1
RDI = 1
LOP = 0
PSE = 4
LOM = 0
PLM = 1
Active Defects: None
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
0D
00
00
00
0A
REI = 11
NSE = 0
UNEQ = 0
Router4/0/1.....
................
................
................
BIP(B3) = 16
NEWPTR = 0
S1S0 = 00, C2 = 04
PATH TRACE BUFFER : STABLE
52
00
00
00
6F
00
00
00
75
00
00
00
74
00
00
00
65
00
00
00
72
00
00
00
34
00
00
00
2F
00
00
00
30
00
00
00
2F
00
00
00
32
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
0D
00
00
00
0A
Router4/0/2.....
................
................
................
PATH 3:
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show controllers sonet
AIS = 1
RDI = 1
LOP = 0
PSE = 4
LOM = 0
PLM = 1
Active Defects: None
REI = 5
NSE = 0
UNEQ = 0
BIP(B3) = 11
NEWPTR = 0
S1S0 = 00, C2 = 04
PATH TRACE BUFFER : STABLE
52
00
00
00
6F
00
00
00
75
00
00
00
74
00
00
00
65
00
00
00
72
00
00
00
34
00
00
00
2F
00
00
00
30
00
00
00
2F
00
00
00
33
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
0D
00
00
00
0A
Router4/0/3.....
................
................
................
OC3.STS1 4/0.1 is up. Hardware is GSR 2 port STM1/OC3 (channelized)
Applique type is VT1.5 in STS-1
STS-1 1, VTG 1, T1 1 (VT1.5 1/1/1) is up
timeslots: 1-24
FDL per AT&T 54016 spec.
No alarms detected.
Framing is ESF, Clock Source is Internal
BERT test result (running)
Test Pattern : 2^20-QRSS, Status : Sync, Sync Detected : 1
Interval : 5 minute(s), Time Remain : 4 minute(s)
Bit Errors (since BERT started): 0 bits,
Bits Received (since BERT started): 112 Mbits
Bit Errors (since last sync): 0 bits
Bits Received (since last sync): 112 Mbits
Data in current interval (117 seconds elapsed):
0 Line Code Violations, 5 Path Code Violations
0 Slip Secs, 1 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
2 Errored Secs, 1 Bursty Err Secs, 1 Severely Err Secs
8 Unavail Secs, 0 Stuffed Secs
(Additional display text is not shown.)
The following partial output example from the show controllers sonet slot/port brief privileged EXEC
command shows limited information about the first SONET controller on the Two-port STM-1/OC-3
Channelized E1/T1 line card in slot 3 of a Cisco 12000 series Internet Router:
Router# show controllers sonet 3/0 brief
SONET 3/0 is up. (Configured for Locally Looped) Hardware is GSR 2 port
STM1/OC3 (channelized)
Applique type is Channelized OCx interface
Clock Source is Line, AUG mapping is AU4.
Medium info:
Type: SDH, Line Coding: NRZ, Line Type: Short SM
Regenerator Section:
LOF = 0
LOS = 0
BIP(B1) = 0
Multiplex Section:
AIS = 0
RDI = 0
REI = 0
BIP(B2) = 0
Active Defects: None
Active Alarms: None
Alarm reporting enabled for: SF SLOS SLOF B1-TCA B2-TCA B3-TCA
BER thresholds: SF = 10e-3 SD = 10e-6
TCA thresholds: B1 = 10e-6 B2 = 10e-6 B3 = 10e-6
High Order Path:
PATH 1:
AIS = 0
LOP = 0
LOM = 0
RDI = 0
PSE = 4
PLM = 0
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REI = 15
NSE = 0
UNEQ = 0
BIP(B3) = 11
NEWPTR = 1
2-port STM-1/OC-3 Channelized E1/T1 Line Card for Cisco 12000 Series Internet Routers
show controllers sonet
Active Defects: None
S1S0 = 02, C2 = 02
PATH TRACE BUFFER : STABLE
CRC-7: 0xF2 OK
52 6F 75 74 65 72 33 2F 30 2F 31 00 00 00 00
Router3/0/1....
STM1.AU4 3/0.1 is up. Hardware is GSR 2 port STM1/OC3 (channelized)
Applique type is C12 in TUG-3 in AU-4
AU-4 1, TUG-3 1, TUG-2 1, E1 1 (C-12 1/1/1/1) is up
timeslots: 1-31
No alarms detected.
Framing is crc4, Clock Source is Internal
BERT test result (running)
Test Pattern : 2^15, Status : Sync, Sync Detected : 1
Interval : 5 minute(s), Time Remain : 2 minute(s)
Bit Errors (since BERT started): 0 bits,
Bits Received (since BERT started): 311 Mbits
Bit Errors (since last sync): 0 bits
Bits Received (since last sync): 311 Mbits
AU-4 1, TUG-3 1, TUG-2 1, E1 2 (C-12 1/1/1/2) is up
timeslots: 1-31
No alarms detected.
Framing is crc4, Clock Source is Internal
AU-4 1, TUG-3 1, TUG-2 1, E1 3 (C-12 1/1/1/3) is up
timeslots: 1-31
No alarms detected.
Framing is crc4, Clock Source is Internal
AU-4 1, TUG-3 1, TUG-2 2, E1 1 (C-12 1/1/2/1) is up
timeslots: 1-31
No alarms detected.
Framing is crc4, Clock Source is Internal
AU-4 1, TUG-3 1, TUG-2 2, E1 2 (C-12 1/1/2/2) is up
timeslots: 1-31
No alarms detected.
Framing is crc4, Clock Source is Internal
AU-4 1, TUG-3 1, TUG-2 2, E1 3 (C-12 1/1/2/3) is up
timeslots: 1-31
No alarms detected.
Framing is crc4, Clock Source is Internal
.
.
.
AU-4 1, TUG-3 2, TUG-2 7, E1 1 (C-12 1/2/7/1) is up
timeslots: 1-31
No alarms detected.
Framing is crc4, Clock Source is Internal
AU-4 1, TUG-3 2, TUG-2 7, E1 2 (C-12 1/2/7/2) is up
timeslots: 1-31
No alarms detected.
Framing is crc4, Clock Source is Internal
AU-4 1, TUG-3 2, TUG-2 7, E1 3 (C-12 1/2/7/3) is up
timeslots: 1-31
No alarms detected.
Framing is crc4, Clock Source is Internal
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show controllers sonet
AU-4 1, TUG-3 3, TUG-2 1, E1 1 (C-12 1/3/1/1) is up
timeslots: 1-31
No alarms detected.
Framing is crc4, Clock Source is Internal
AU-4 1, TUG-3 3, TUG-2 1, E1 2 (C-12 1/3/1/2) is up
timeslots: 1-31
No alarms detected.
Framing is crc4, Clock Source is Internal
AU-4 1, TUG-3 3, TUG-2 1, E1 3 (C-12 1/3/1/3) is up
timeslots: 1-31
No alarms detected.
Framing is crc4, Clock Source is Internal
.
.
.
AU-4 1, TUG-3 3, TUG-2 7, E1 1 (C-12 1/3/7/1) is up
timeslots: 1-31
No alarms detected.
Framing is crc4, Clock Source is Internal
AU-4 1, TUG-3 3, TUG-2 7, E1 2 (C-12 1/3/7/2) is up
timeslots: 1-31
No alarms detected.
Framing is crc4, Clock Source is Internal
AU-4 1, TUG-3 3, TUG-2 7, E1 3 (C-12 1/3/7/3) is up
timeslots: 1-31
No alarms detected.
Framing is crc4, Clock Source is Internal
(Additional display text is not shown.)
By adding specific T1 or E1 line information to the preceding show controllers sonet slot/port brief
command, you can show limited output for the specific line that you specify.
Router# show controllers sonet 3/1.1/1/1/1 brief
SONET 3/1 is up.
Path mode C12
AU-4 1, TUG-3 1, TUG-2 1, E1 1 (C-12 1/1/1/1) is up
timeslots: 1-31
No alarms detected.
Framing is crc4, Clock Source is Internal
Router#
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show controllers sonet
By adding specific T1 or E1 line information to the show controllers sonet slot/port tabular command,
you can show output for the specific line that you specify in tabular format.
Router# show controllers sonet 3/1.1/1/1/1 tabular
SONET 3/1 is up.
Path mode C12
AU-4 1, TUG-3 1, TUG-2 1, E1 1 (C-12 1/1/1/1) is up
timeslots: 1-31
No alarms detected.
Framing is crc4, Clock Source is Internal
INTERVAL
LCV
PCV
CSS SELS
LES
DM
ES
01:01-01:03
0
0
0
0
0
0
0
00:46-01:01
0
0
0
0
0
0
0
00:31-00:46
0
0
0
0
0
0
0
00:16-00:31
0
0
0
0
0
0
0
00:01-00:16
0
0
0
0
0
0
0
Total
0
0
0
0
0
0
0
Router#
BES
0
0
0
0
0
0
SES
0
0
0
0
0
0
UAS
0
0
0
0
0
0
SS
0
0
0
0
0
0
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show interfaces serial
show interfaces serial
To display information about a serial interface configured on a Two-port STM-1/OC-3 Channelized
E1/T1 line card in a Cisco 12000 series Internet Router, use the show interfaces serial privileged EXEC
command.
SDH framing and AU-4 AUG mapping
show interfaces serial slot/port.au-4-number/tug-3-number/tug-2-number/e1-line-number
SDH framing and AU-3 AUG mapping
show interfaces serial slot/port.au-3-number/tug-2-number/t1-number
SONET framing and CT3 mode
show interfaces serial slot/port.sts1-number/t1-number
SONET framing and VT-15 mode
show interfaces serial slot/port.sts1-number/vtg-number/t1-number
Syntax Description
slot
The chassis slot where the Two-port STM-1/OC-3 Channelized E1/T1 line
card is installed.
port
The physical port on the Two-port STM-1/OC-3 Channelized E1/T1 line
card. Either 0 or 1.
au-4-number
Always 1 for this line card.
tug-3-number
A number in the range from 1 to 3.
au-3-number
A number in the range from 1 to 3.
tug-2-number
A number in the range from 1 to 7.
e1-line-number
A number in the range from 1 to 3.
t1-line-number
A number in the range from 1 to 4 (in ct3 mode, where a channelized T3 is
mapped into the STS-1, t1-line-number is a number in the range from 1 to
28).
sts1-number
A number in the range from 1 to 3.
vtg-number
A number in the range from 1 to 7.
Command Modes
Privileged EXEC
Command History
Release
Modification
10.0
This command was introduced.
12.0(17)S
This command was modified to support the Two-port STM-1/OC-3
Channelized E1/T1 line card.
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show interfaces serial
Examples
The following partial output example from the show interfaces serial slot/port privileged EXEC
command shows interface information for the second SONET controller on the Two-port STM-1/OC-3
Channelized E1/T1 line card in slot 3 of a Cisco 12000 series Internet Router:
Router# show interfaces serial 3/1.1/1/1:1
Serial3/1.1/1/1:1 is up, line protocol is up (looped)
Hardware is Channelized Sonet/SDH to T1/E1
Internet address is 10.0.0.1/24
MTU 1500 bytes, BW 1472 Kbit, DLY 20000 usec, rely 255/255, load 1/255
Encapsulation HDLC, crc 16, loopback not set
Keepalive set (10 sec)
Last input 00:00:01, output 00:00:01, output hang never
Last clearing of "show interface" counters never
Queueing strategy: fifo
Output queue 0/40, 0 drops; input queue 0/75, 0 drops
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
107 packets input, 8148 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 12 abort
107 packets output, 8148 bytes, 0 underruns
0 output errors, 0 collisions, 2 interface resets
0 output buffer failures, 0 output buffers swapped out
2 carrier transitions no alarm present
Timeslot(s) Used: 1-23, Transmitter delay is 0 flags
non-inverted data
(Additional display text is not shown.)
Related Commands
Command
Description
clear counters serial
Clear the counters for a serial interface.
clear interface serial
Reset the hardware logic for a serial interface.
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sts-1
sts-1
To configure an STS-1, use the sts-1 controller configuration command to enter the STS-1 path
configuration mode. To remove an STS-1 configuration, use the no form of this command.
sts-1 number
no sts-1 number
Syntax Description
number
Defaults
No default behavior or values.
Command Modes
Controller configuration
Command History
Release
Modification
12.0(17)S
This command was introduced.
Usage Guidelines
A number in the range from 1 to 3.
Under SONET framing, each of the STS-1 paths of STS-m (where m is the SONET STS level) can be
configured to carry a set of T1s mapped into either a VT1.5 signal or a DS3 signal. The DS3 signal itself
will carry a set of T1s (thus becoming a channelized T3, or CT3).
From the STS-1 path configuration mode, you can use the mode command to configure the mode of
operation to be vt-15 (Virtual Tributary Group structure VT1.5, which is used for DS1 transport) or ct3
(channelized T3).
Examples
The following example selects ct3 as the STS-1 mode of operation:
Router(config)# controller
Router(config-controller)#
Router(config-controller)#
Router(config-ctrlr-sts1)#
Related Commands
sonet 4/0
framing sonet
sts-1 3
mode ct3
Command
Description
framing (controller)
Determine whether the port is to be used in SONET mode or SDH mode.
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t1 bert pattern
t1 bert pattern
To send a BERT pattern on a T1 line on the Two-port STM-1/OC-3 Channelized E1/T1 line card, use the
t1 bert pattern path configuration command from the command mode that is appropriate to your
channelized configuration. To disable a BER test, use the no form of this command from the command
mode that is appropriate to your channelized configuration.
C-11 mode of operation (SDH framing; AU-3 AUG mapping)
tug-2 tug-2-number t1 t1-line-number bert pattern [2^11 | 2^15 | 2^20-QRSS] interval time
no tug-2 tug-2-number t1 t1-line-number bert pattern [2^11 | 2^15 | 2^20-QRSS] interval time
VT1.5 mode of operation (SONET framing; vt-15 mode)
vtg vtg-number t1 t1-line-number bert pattern [2^11 | 2^15 | 2^20-QRSS] interval time
no vtg vtg-number t1 t1-line-number bert pattern [2^11 | 2^15 | 2^20-QRSS] interval time
CT3 mode of operation (SONET framing; ct3 mode)
t1 t1-line-number bert pattern [2^11 | 2^15 | 2^20-QRSS] interval time
no t1 t1-line-number bert pattern [2^11 | 2^15 | 2^20-QRSS] interval time
Syntax Description
tug-2-number
Specifies the TUG-2 number in the selected TUG-3; a number in the range
from 1 to 7.
e1-line-number
Specifies the E1 link being configured; a number in the range from 1 to 3.
A TUG-2 can carry three TU-12s, each of which can carry a channelized E1
frame.
2^11
(Optional) Pseudo-random repeating pattern that is 2,048 bits long.
2^15
(Optional) A pseudorandom repeating pattern that is 32767 bits long, per
ITU-T O.151. In accordance with O.151, this test pattern is inverted.
2^20-QRSS
(Optional) A pseudorandom repeating pattern that is 1048575 bits long, per
ITU-T O.151.
interval time
Specifies the duration of the BER test. The interval can be a value in the
range from 1 to 14400 minutes (240 hours).
Defaults
No BER test is performed.
Command Modes
In c-11 mode, AU-3 path configuration.
In vt-15 mode, STS-1 path configuration.
In ct3 mode, STS-1 path configuration.
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t1 bert pattern
Command History
Usage Guidelines
Release
Modification
11.3
This command was introduced.
12.0(17)S
This command was modified to support the Two-port STM-1/OC-3
Channelized E1/T1 line card.
Bit error rate test (BERT) circuitry is built into the Two-port STM-1/OC-3 Channelized E1/T1 line card.
The Two-port STM-1/OC-3 Channelized E1/T1 supports the following pseudorandom test patterns:
•
2^11—A pseudorandom repeating pattern that is 2048 bits long.
•
2^15—A pseudorandom repeating pattern that is 32767 bits long, per ITU-T O.151. In accordance
with O.151, this test pattern is inverted.
•
2^20 QRSS—A pseudorandom repeating pattern that is 1048575 bits long, per ITU-T O.151.
With BER tests, you can accurately assess the number of errors on an T1 link and diagnose signal
problems in the field.
Both the total number of error bits transmitted and the total number of bits received are available for
analysis. You can set the testing period from 1 minute to 14,400 minutes (240 hours). You can also
retrieve the error statistics anytime during the BER test.
When running a BER test, your system expects to receive the same pattern that it is transmitting. To help
ensure this, two common options are available:
•
Use a loopback somewhere in the link or network.
•
Configure remote testing equipment to transmit the same BER test pattern at the same time.
To configure a BER test on T1 line, you must enter SONET controller configuration mode and specify
the line card slot and port, and then enter the command mode appropriate to the selected framing type
and mode of operation for the STS-1 or AU-3.
Note
The BER test runs over the currently configured framing option for the specified T1 line (ESF or SF).
Before running a BER test, be sure to configure the framing option that is appropriate for your
application.
To view the BERT results, use the show controllers sonet privileged EXEC command. The BERT
results portion of the command output includes the following information:
•
Type of BER test pattern selected
•
Status of the test
•
Interval selected
•
Time remaining on the test
•
Total bit errors
•
Total bits received
You can view the results of a BER test at the following times:
•
After you terminate the test using the no form of the t1 bert pattern path configuration command
•
After the test runs completely
•
Anytime during the test (in real time)
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t1 bert pattern
Examples
The following is an example in vt-15 mode of how to send a BERT pseudorandom pattern of 2^11
through T1 line 1 for 5 minutes:
Router(config)# controller sonet 6/0
Router(config-controller)# sts-1 1
Router(config-ctrlr-sts1)# vtg 4 t1 1 bert pattern 2^11 interval 5
Router(config-ctrlr-sts1)#
Related Commands
Command
Description
t1 framing
Specify the T1 framing format for a T1 line on the Two-port STM-1/OC-3
Channelized E1/T1 line card.
show controllers sonet Displays information that is specific to SONET controllers in a Cisco 12000
series Internet Router.
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t1 channel-group timeslots
t1 channel-group timeslots
To configure a logical channel group for a T1 line on the Two-port STM-1/OC-3 Channelized E1/T1 line
card, use the t1 channel-group timeslots configuration command from the command mode that is
appropriate to your channelized configuration. To remove a channel group, use the no form of this
command from the command mode that is appropriate to your channelized configuration.
C-11 mode of operation (SDH framing; AU-3 AUG mapping)
tug-2 tug-2-number t1 t1-line-number channel-group channel-group-number timeslots
list-of-timeslots [speed {56 | 64}]
no tug-2 tug-2-number t1 t1-line-number channel-group channel-group-number timeslots
list-of-timeslots [speed {56 | 64}]
VT1.5 mode of operation (SONET framing; vt-15 mode)
vtg vtg-number t1 t1-line-number channel-group channel-group-number timeslots
list-of-timeslots [speed {56 | 64}]
no vtg vtg-number t1 t1-line-number channel-group channel-group-number timeslots
list-of-timeslots [speed {56 | 64}]
CT3 mode of operation (SONET framing; ct3 mode)
t1 t1-line-number channel-group channel-group-number timeslots list-of-timeslots [speed {56 |
64}]
no t1 t1-line-number channel-group channel-group-number timeslots list-of-timeslots [speed {56
| 64}]
Syntax Description
Defaults
tug-2 tug-2-number
Specifies the TUG-2 number in the selected TUG-3; a number in the range
from 1 to 7.
t1 t1-line-number
Specifies the T1 link being configured; a number in the range from 1 to n,
where n depends on the selected mode of operation:
•
In c-11 mode, n = 4
•
In vt-15 mode, n = 4
•
In ct3 mode, n = 28
channel-group
channel-group-number
Defines a logical channel group; a number in the range from 0 to 23 that
identifies the set of timeslots allocated to this n x DS0 channel in the
channelized T1 line (where n ranges from 1 to 24 timeslots).
timeslots
list-of-timeslots
Combination of subranges within the range from 1 to 24 (each subrange is
a list of timeslots that makes up the T1 line).
speed {56 | 64}
(Optional) Sets the DS0 speed to either 56 or 64 kbps. The default speed is
64 kbps.
No default behavior or values.
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t1 channel-group timeslots
Command Modes
In c-11 mode, AU-3 path configuration.
In vt-15 mode, STS-1 path configuration.
In ct3 mode, STS-1 path configuration.
Command History
Usage Guidelines
Note
Release
Modification
11.3
This command was introduced as the t1 timeslot command.
12.0(17)S
This command was modified to support the Two-port STM-1/OC-3
Channelized E1/T1 line card.
To configure a T1 line, you must enter SONET controller configuration mode and specify the line card
slot and port, and then enter the command mode appropriate to the selected framing type and mode of
operation for the STS-1 or AU-3.
After a T1 channel group is configured, it appears to the Cisco IOS software as a serial interface;
therefore, all the configuration commands for a serial interface are available, but not all commands
are applicable to the E1 channel group.
All the encapsulation formats, such as PPP, HDLC, and Frame Relay are applicable to the configured
T1 channel group. Be sure that you are in serial interface configuration mode when you set the
encapsulation format.
All the switching types that are applicable to a serial interface are also applicable to the configured
T1 channel group.
Examples
The following example shows the process of configuring a logical channel group in c-11 mode. The first
T1 line in the fourth TUG-2 group is assigned to logical channel group 15 with channelized timeslots 1
to 5, and 20 to 23:
Router(config)# controller sonet 6/0
Router(config-controller)# au-3 1
Router(config-ctrlr-au3)# tug-2 4 t1 1 channel-group 15 timeslots 1-5, 20-23
Router(config-ctrlr-au3)#
The following example shows the process of configuring a logical channel group in vt-15 mode. The first
T1 line is assigned to logical channel group 15 with channelized timeslots 1 to 5, and 20 to 23:
Router(config)# controller sonet 6/0
Router(config-controller)# sts-1 1
Router(config-ctrlr-sts1)# vtg 1 t1 1 channel-group 15 timeslots 1-5, 20-23
Router(config-ctrlr-sts1)#
The following example shows the process of configuring a logical channel group in ct3 mode. The first
T1 line is assigned to logical channel group 15 with channelized timeslots 1 to 5, and 20 to 23:
Router(config)# controller sonet 6/0
Router(config-controller)# sts-1 1
Router(config-ctrlr-sts1)# t1 1 channel-group 15 timeslots 1-5, 20-23
Router(config-ctrlr-sts1)#
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t1 clock source
t1 clock source
To set the internal or line (network) clock source for a T1 line on the Two-port STM-1/OC-3 Channelized
E1/T1 line card, use the t1 clock source configuration command from the command mode that is
appropriate to your channelized configuration. To restore the default clock source, use the no form of
this command from the command mode that is appropriate to your channelized configuration.
C-11 mode of operation (SDH framing; AU-3 AUG mapping)
tug-2 tug-2-number t1 t1-line-number clock source {internal | line}
no tug-2 tug-2-number t1 t1-line-number clock source
VT1.5 mode of operation (SONET framing; vt-15 mode)
vtg vtg-number t1 t1-line-number clock source {internal | line}
no vtg vtg-number t1 t1-line-number clock source
CT3 mode of operation (SONET framing; ct3 mode)
t1 t1-line-number clock source {internal | line}
no t1 t1-line-number clock source
Syntax Description
tug-2 tug-2-number
Specifies the TUG-2 number in the selected TUG-3; a number in the range
from 1 to 7.
t1 t1-line-number
Specifies the T1 link being configured; a number in the range from 1 to n,
where n depends on the selected mode of operation:
internal | line
•
In c-11 mode, n = 4
•
In vt-15 mode, n = 4
•
In ct3 mode, n = 28
Defines the clock source for the T1 line. The default T1 line clock source is
internal.
Defaults
Internal
Command Modes
In c-11 mode, AU-3 path configuration.
In vt-15 mode, STS-1 path configuration.
In ct3 mode, STS-1 path configuration.
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t1 clock source
Command History
Usage Guidelines
Note
Examples
Release
Modification
11.3
This command was introduced.
12.0(17)S
This command was modified to support the Two-port STM-1/OC-3
Channelized E1/T1 line card.
To configure a T1 line, you must enter SONET controller configuration mode and specify the line card
slot and port, and then enter the command mode appropriate to the selected framing type and mode of
operation for the STS-1 or AU-3.
On a T1 circuit, one end must provide the clock source by using the internal clock source. The other
end of the circuit can use either line or internal as the clock source.
The following example shows the process of configuring the T1 clock source in vt-15 mode. Internal
clocking is selected for the first T1 line in the fourth VTG:
Router(config)# controller sonet 6/0
Router(config-controller)# sts-1 1
Router(config-ctrlr-sts1)# vtg 4 t1 1 clock source internal
Router(config-ctrlr-sts1)#
The following example shows the process of configuring line clocking in vt-15 mode. Line clocking is
selected for the first T1 line in the fourth VTG:
Router(config)# controller sonet 6/0
Router(config-controller)# sts-1 1
Router(config-ctrlr-sts1)# vtg 4 t1 1 clock source line
Router(config-ctrlr-sts1)#
Related Commands
Command
Description
clock source
(controller)
Specifies the clock source for the selected OC-3/STM-1 port on the
Two-port STM-1/OC-3 Channelized E1/T1 line card.
t3 clock source
Sets the clock source for the selected T3 link.
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t1 fdl ansi
t1 fdl ansi
To enable 1-second transmissions of performance reports through the Facility Data Link (FDL) for a T1
line on the Two-port STM-1/OC-3 Channelized E1/T1 line card, use the t1 fdl ansi path configuration
command from the command mode that is appropriate to your channelized configuration. To disable
remote performance reports, use the no form of this command from the command mode that is
appropriate to your channelized configuration.
C-11 mode of operation (SDH framing; AU-3 AUG mapping)
tug-2 tug-2-number t1 t1-line-number fdl ansi
no tug-2 tug-2-number t1 t1-line-number fdl ansi
VT1.5 mode of operation (SONET framing; vt-15 mode)
vtg vtg-number t1 t1-line-number fdl ansi
no vtg vtg-number t1 t1-line-number fdl ansi
CT3 mode of operation (SONET framing; ct3 mode)
t1 t1-line-number fdl ansi
no t1 t1-line-number fdl ansi
Syntax Description
tug-2 tug-2-number
Specifies the TUG-2 number in the selected TUG-3; a number in the range
from 1 to 7.
t1 t1-line-number
Specifies the T1 link being configured; a number in the range from 1 to n,
where n depends on the selected mode of operation:
•
In c-11 mode, n = 4
•
In vt-15 mode, n = 4
•
In ct3 mode, n = 28
Defaults
Transmission of performance reports is disabled.
Command Modes
In c-11 mode, AU-3 path configuration.
In vt-15 mode, STS-1 path configuration.
In ct3 mode, STS-1 path configuration.
Command History
Release
Modification
11.3
This command was introduced.
12.0(17)S
This command was modified to support the Two-port STM-1/OC-3
Channelized E1/T1 line card.
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t1 fdl ansi
Usage Guidelines
To configure performance reporting on a T1 line, you must enter SONET controller configuration mode
and specify the line card slot and port, and then enter the command mode appropriate to the selected
framing type and mode of operation for the STS-1 or AU-3.
You can use this command only when the T1 framing is ESF. The Two-port STM-1/OC-3 Channelized
E1/T1 line card supports the reporting of controlled slip seconds (CSS). Controlled slip seconds are
reported from the far end only when a network payload loopback is set.
Note
If you do not first enable remote performance data with the t1 t1-line-number fdl ansi command, the
following message is displayed:
T1 1 - Remote Performance Data (Not available)
Examples
The following example shows how to enable performance reports for a T1 line in vt-15 mode:
Router(config)# controller sonet 6/0
Router(config-controller)# sts-1 1
Router(config-ctrlr-sts1)# vtg 4 t1 1 fdl ansi
Router(config-ctrlr-sts1)#
Related Commands
Command
Description
t1 framing
Specifies the T1 framing format for a T1 line on the Two-port STM-1/OC-3
Channelized E1/T1 line card.
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t1 framing
To specify the T1 framing format for a T1 line on the Two-port STM-1/OC-3 Channelized E1/T1 line
card, use the t1 framing configuration command from the command mode that is appropriate to your
channelized configuration. To restore the default framing type, use the no form of this command from
the command mode that is appropriate to your channelized configuration.
C-11 mode of operation (SDH framing; AU-3 AUG mapping)
tug-2 tug-2-number t1 t1-line-number framing {esf | sf [hdlc-idle {0x7E | 0xFF}]}
no tug-2 tug-2-number t1 t1-line-number framing {esf | sf [hdlc-idle {0x7E | 0xFF}]}
VT1.5 mode of operation (SONET framing; vt-15 mode)
vtg vtg-number t1 t1-line-number framing {esf | sf [hdlc-idle {0x7E | 0xFF}]}
no vtg vtg-number t1 t1-line-number framing {esf | sf [hdlc-idle {0x7E | 0xFF}]}
CT3 mode of operation (SONET framing; ct3 mode)
t1 t1-line-number framing {esf | sf [hdlc-idle {0x7E | 0xFF}]}
no t1 t1-line-number framing {esf | sf [hdlc-idle {0x7E | 0xFF}]}
Syntax Description
tug-2 tug-2-number
Specifies the TUG-2 number in the selected TUG-3; a number in the range
from 1 to 7.
t1 t1-line-number
Specifies the T1 link being configured; a number in the range from 1 to n,
where n depends on the selected mode of operation:
•
In c-11 mode, n = 4
•
In vt-15 mode, n = 4
•
In ct3 mode, n = 28
esf | sf [hdlc-idle {0x7E Defines the type of framing for the T1 line: Extended Super Frame (ESF) or
| 0xFF}]}
Super Frame (SF). The default framing format is Extended Super Frame
(ESF). Super Frame format offers the hdlc-idle option, which can be set to
use either 0x7E or 0xFF as the HDLC idle pattern.
Defaults
Extended Super Frame (ESF)
Command Modes
In c-11 mode, AU-3 path configuration.
In vt-15 mode, STS-1 path configuration.
In ct3 mode, STS-1 path configuration.
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t1 framing
Command History
Usage Guidelines
Note
Examples
Release
Modification
11.3
This command was introduced.
12.0(17)S
This command was modified to support the Two-port STM-1/OC-3
Channelized E1/T1 line card.
To configure a T1 line, you must enter SONET controller configuration mode and specify the line card
slot and port, and then enter the command mode appropriate to the selected framing type and mode of
operation for the STS-1 or AU-3.
When you select SF framing, consider using the no t1-line-number yellow detection command to
turn off yellow alarm detection, because the yellow alarm can be incorrectly detected with SF
framing. You can use the [no] t1 t1-line-number yellow {detection | generation} command (where
t1-line-number is 1 to 28) to turn the detection or generation of a yellow alarm on and off.
The following example shows the process of configuring ESF framing in vt-15 mode. ESF framing is
selected for the first T1 line in the fourth VTG:
Router(config)# controller sonet 6/0
Router(config-controller)# sts-1 1
Router(config-ctrlr-sts1)# vtg 4 t1 1 framing esf
Router(config-ctrlr-sts1)#
The following example shows the process of configuring SF framing in vt-15 mode. SF framing with an
HDLC idle pattern of 0x7E is selected for the first T1 line in the fourth VTG:
Router(config)# controller sonet 6/0
Router(config-controller)# sts-1 1
Router(config-ctrlr-sts1)# vtg 4 t1 1 framing sf hdlc-idle 0x7e
Router(config-ctrlr-sts1)#
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t1 loopback
t1 loopback
To set a loopback on a T1 line on the Two-port STM-1/OC-3 Channelized E1/T1 line card, use the t1
loopback path configuration command from the command mode that is appropriate to your channelized
configuration. To remove a loopback, use the no form of this command from the command mode that is
appropriate to your channelized configuration.
C-11 mode of operation (SDH framing; AU-3 AUG mapping)
tug-2 tug-2-number t1 t1-line-number loopback [local | network {line | payload} | remote {line
fdl {ansi | bellcore} | payload [fdl] [ansi]}]
no tug-2 tug-2-number t1 t1-line-number loopback [local | network {line | payload} | remote
{line fdl {ansi | bellcore} | payload [fdl] [ansi]}]
VT1.5 mode of operation (SONET framing; vt-15 mode)
vtg vtg-number t1 t1-line-number loopback [local | network {line | payload} | remote {line fdl
{ansi | bellcore} | payload [fdl] [ansi]}]
no vtg vtg-number t1 t1-line-number loopback [local | network {line | payload} | remote {line fdl
{ansi | bellcore} | payload [fdl] [ansi]}]
CT3 mode of operation (SONET framing; ct3 mode)
t1 t1-line-number loopback [local | network {line | payload} | remote {line fdl {ansi | bellcore}
| payload [fdl] [ansi]}]
no t1 t1-line-number loopback [local | network {line | payload} | remote {line fdl {ansi |
bellcore} | payload [fdl] [ansi]}]
Syntax Description
tug-2 tug-2-number
Specifies the TUG-2 number in the selected TUG-3; a number in the range
from 1 to 7.
t1 t1-line-number
Specifies the T1 link being configured; a number in the range from 1 to n,
where n depends on the selected mode of operation:
•
In c-11 mode, n = 4
•
In vt-15 mode, n = 4
•
In ct3 mode, n = 28
local
(Optional) Loops the router output data back toward the router at the T1
framer.
network line
(Optional) Selecting network line loops the data back toward the network
before the T1 framer.
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t1 loopback
network payload
(Optional) Selecting network payload sets a loopback that works much
like the network line loopback, except that the T1 framing bits are stripped
at the receive side of the T1 framer and regenerated at the transmit side of
the T1 framer (toward the network).
If the T1 channel is configured for internal clocking and you attempt to set
a network payload loopback, you will receive the following warning
message:
This channel is configured for Internal clocking. Data integrity
in network payload loopback is guaranteed only if the opposite end
is configured for Line clocking, or vice versa.
Either the local port should be internal clocking, and the remote port line
clocking, or the local port should be line clocking, and the remote port
internal clocking.
remote line fdl ansi
(Optional) Enables the remote line facility data link (FDL) ANSI bit
loopback on the T1 channel, per the ANSI T1.403 specification; sends a
repeating, 16-bit ESF data link code word (00001110 11111111 for ANSI)
to the remote end, requesting that it enter into a network line loopback.
remote line fdl bellcore (Optional) Enables the remote SmartJack loopback on the T1 channel, per
the TR-TSY-000312 specification; sends a repeating, 16-bit ESF data link
code word (00010010 11111111 for Bellcore) to the remote end, requesting
that it enter into a network line loopback.
remote payload [fdl]
[ansi]
(Optional) Sends a repeating, 16-bit ESF data link code word (00010100
11111111) to the remote end, requesting that it enter into a network payload
loopback. Enables the remote payload Facility Data Link (FDL) ANSI bit
loopback on the T1 channel.
You can optionally specify fdl and ansi, but it is not necessary.
Defaults
No loopback is set.
Command Modes
In c-11 mode, AU-3 path configuration.
In vt-15 mode, STS-1 path configuration.
In ct3 mode, STS-1 path configuration.
Command History
Usage Guidelines
Release
Modification
11.1. CA
This command was introduced.
12.0(17)S
This command was modified to support the Two-port STM-1/OC-3
Channelized E1/T1 line card.
To configure a loopback on a T1 line, you must enter SONET controller configuration mode and specify
the line card slot and port, and then enter the command mode appropriate to the selected framing type
and mode of operation for the STS-1 or AU-3.
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t1 loopback
Note
Examples
fdl loopback commands are available only for T1 links configured for ESF framing.
The following example shows how to specify a local loopback for a T1 line in vt-15 mode:
Router# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)# controller sonet 6/0
Router(config-controller)# sts-1 1
Router(config-ctrlr-sts1)# vtg 4 t1 1 loopback local
Router(config-ctrlr-sts1)#
The following example shows how to specify a network line loopback for a T1 line in vt-15 mode:
Router# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)# controller sonet 6/0
Router(config-controller)# sts-1 1
Router(config-ctrlr-sts1)# vtg 4 t1 1 loopback network line
Router(config-ctrlr-sts1)#
The following example shows how to specify a network payload loopback for a T1 line in vt-15 mode:
Router# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)# controller sonet 6/0
Router(config-controller)# sts-1 1
Router(config-ctrlr-sts1)# vtg 4 t1 1 loopback network payload
Router(config-ctrlr-sts1)#
The following example sets a T1 line into remote line fdl ansi loopback:
Router# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)# controller sonet 6/0
Router(config-controller)# sts-1 1
Router(config-ctrlr-sts1)# vtg 4 t1 1 loopback remote line fdl ansi
Router(config-ctrlr-sts1)#
The following example sets a T1 line into remote payload fdl ansi loopback:
Router# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)# controller sonet 6/0
Router(config-controller)# sts-1 1
Router(config-ctrlr-sts1)# vtg 4 t1 1 loopback remote payload fdl ansi
Router(config-ctrlr-sts1)#
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t3 clock source
t3 clock source
To set the clock source for the selected T3 link, use the t3 clock source STS-1 path configuration
command. To restore the default clock source, use the no form of this command.
t3 clock source {internal | line}
no t3 clock source
Syntax Description
internal
Specifies that the internal clock source is used. This is the default.
line
Specifies that the network clock source is used.
Defaults
Internal
Command Modes
STS-1 path configuration
Command History
Release
Modification
12.0(14)S
This command was introduced.
12.0(17)S
This command was modified to support the Two-port STM-1/OC-3
Channelized E1/T1 line card.
Usage Guidelines
On a T3 circuit, at least one end must provide the clock source (by using the internal clock source). The
other end of the T3 circuit can use either line or internal as the clock source.
Examples
The following example shows how to configure a line clock source:
Router(config)# controller
Router(config-controller)#
Router(config-ctrlr-sts1)#
Router(config-ctrlr-sts1)#
Router(config-ctrlr-sts1)#
sonet 6/0
sts-1 1
mode ct3
t3 clock source line
The following example shows how to configure an internal clock source:
Router(config)# controller
Router(config-controller)#
Router(config-ctrlr-sts1)#
Router(config-ctrlr-sts1)#
Router(config-ctrlr-sts1)#
sonet 6/0
sts-1 1
mode ct3
t3 clock source internal
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t3 clock source
Related Commands
Command
Description
clock source
(controller)
Specifies the clock source for the selected OC-3/STM-1 port on the
Two-port STM-1/OC-3 Channelized E1/T1 line card.
t1 clock source
Sets the internal or line (network) clock source for a T1 line.
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t3 equipment loopback
t3 equipment loopback
To enable the Two-port STM-1/OC-3 Channelized E1/T1 line card to respond to remote T3 link loopback
commands from the remote T3 equipment, use the t3 equipment loopback STS-1 path configuration
command. To return to the default setting, use the no form of this command.
t3 equipment {customer | network} loopback
no t3 equipment {customer | network} loopback
Syntax Description
customer
Configures the Two-port STM-1/OC-3 Channelized E1/T1 line card as
customer equipment.
network
Configures the Two-port STM-1/OC-3 Channelized E1/T1 line card as
network equipment.
Defaults
Customer equipment
Command Modes
STS-1 path configuration
Command History
Release
Modification
12.0(14)S
This command was introduced.
12.0(17)S
This command was modified to support the Two-port STM-1/OC-3
Channelized E1/T1 line card.
Usage Guidelines
Use this command to configure the Two-port STM-1/OC-3 Channelized E1/T1 line card as network
equipment or customer equipment so that it operates according to the T1.403 ANSI standard, allowing
equipment configured as network equipment to disregard network loopback commands.
Examples
The following example configures the Two-port STM-1/OC-3 Channelized E1/T1 line card to respond
to remote T3 link loopback commands from the remote T3 equipment:
Router(config-ctrlr-sts1)# t3 equipment customer loopback
Router(config-ctrlr-sts1)#
The following example configures the Two-port STM-1/OC-3 Channelized E1/T1 line card to ignore
remote T3 link loopback commands:
Router(config-ctrlr-sts1)# t3 equipment network loopback
Router(config-ctrlr-sts1)#
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t3 framing
t3 framing
To specify the framing type for the T3 link, use the t3 framing STS-1 path configuration command. To
restore the default framing type, use the no form of this command.
t3 framing [auto-detect | c-bit | m23]
no t3 framing
Syntax Description
auto-detect
Specifies that the line card detects the framing type it receives from the
far-end equipment. This is the default.
c-bit
Specifies that the C-bit framing is used as the T3 framing type.
m-23
Specifies that the M23 framing is used as the T3 framing type.
Defaults
auto-detect
Command Modes
STS-1 path configuration
Command History
Release
Modification
12.0(14)S
This command was introduced.
12.0(17)S
This command was modified to support the Two-port STM-1/OC-3
Channelized E1/T1 line card.
Usage Guidelines
Examples
The M23 framing type might be referred to as M13 in other technical literature and on test equipment.
The following example sets m23 as the T3 framing format:
Router(config)# controller
Router(config-controller)#
Router(config-ctrlr-sts1)#
Router(config-ctrlr-sts1)#
Router(config-ctrlr-sts1)#
sonet 4/0
sts-1 1
mode ct3
t3 framing m23
To request that the Two-port STM-1/OC-3 Channelized E1/T1 line card detect the framing type it is
receiving from the far end and transmit using that same framing type, set auto-detect framing format as
follows:
Router(config)# controller
Router(config-controller)#
Router(config-ctrlr-sts1)#
Router(config-ctrlr-sts1)#
Router(config-ctrlr-sts1)#
sonet 4/0
sts-1 1
mode ct3
t3 framing auto-detect
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t3 framing
Related Commands
Command
Description
mode
Specify the mode of operation of an STS-1.
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t3 loopback
t3 loopback
To set a loopback on a T3 link on the Two-port STM-1/OC-3 Channelized E1/T1 line card, use the t3
loopback STS-1 path configuration command. To remove the loopback, use the no form of this
command.
t3 loopback [local | network | remote]
no t3 loopback
Syntax Description
local
(Optional) Loops the output data back toward the router at the T3 framer
and sends an AIS signal out toward the network.
network
(Optional) Loops the data back toward the network before the T3 framer.
remote
(Optional) Sends a repeating, 16-bit ESF data link code word to the remote
end requesting that it enter into a network line loopback.
Defaults
No loopback is set.
Command Modes
STS-1 path configuration
Command History
Release
Modification
12.0(14)S
This command was introduced.
12.0(17)S
This command was modified to support the Two-port STM-1/OC-3
Channelized E1/T1 line card.
Usage Guidelines
Note
Examples
Before attempting to diagnose a problem in the T3 link, use the show controllers sonet command to
verify that the STS-1 path carrying this T3 is free of all defects.
Remote loopbacks are only available when you use C-bit parity framing.
The following example is for a Two-port STM-1/OC-3 Channelized E1/T1 line card in slot 6 of the Cisco
12000 series router, and uses the local loopback to diagnose problems with the T3 link when it is isolated
from the network cables.
Router(config)# controller
Router(config-controller)#
Router(config-ctrlr-sts1)#
Router(config-ctrlr-sts1)#
Router(config-ctrlr-sts1)#
sonet 6/0
sts-1 1
mode ct3
t3 loopback local
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t3 loopback
The following example shows how to configure the T3 link for network loopback. The T3 link is on a
Two-port STM-1/OC-3 Channelized E1/T1 line card in slot 6 and port 0 of the Cisco 12000 series
Internet Router:
Router(config)# controller
Router(config-controller)#
Router(config-ctrlr-sts1)#
Router(config-ctrlr-sts1)#
Router(config-ctrlr-sts1)#
sonet 6/0
sts-1 1
mode ct3
t3 loopback network
The following example shows how to configure the T3 link for remote loopback. The T3 link is on a
Two-port STM-1/OC-3 Channelized E1/T1 line card in slot 6 and port 0 of the Cisco 12000 series
Internet Router:
Router(config)# controller
Router(config-controller)#
Router(config-ctrlr-sts1)#
Router(config-ctrlr-sts1)#
Router(config-ctrlr-sts1)#
Related Commands
sonet 6/0
sts-1 1
mode ct3
t3 loopback remote
Command
Description
mode
Specify the mode of operation of an STS-1.
t3 framing
Specify the framing type for the T3 link.
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threshold
threshold
To set threshold values for the BER Threshold Crossing Alarms available for the Two-port STM-1/OC-3
Channelized E1/T1 line card, use the threshold controller configuration command. To disable the
threshold values, use the no form of this command.
threshold type value
no threshold type value
Syntax Description
type
One of the thresholds listed in Table 2.
value
A number in the range from 3 to 9 that represents the bit error rate threshold
value (10-n, where n is a number in the range from 3 to 9).
For TCA thresholds b1-tca, b2-tca, and b3-tca, 10-6
Defaults
For BER threshold sd-ber, 10-6; for sf-ber, 10-3
Command Modes
Controller configuration
Command History
Release
Usage Guidelines
12.0(14)S
This command was introduced.
12.0(17)S
This command was modified to support the Two-port STM-1/OC-3
Channelized E1/T1 line card.
Table 2 describes the supported threshold types and values.
Table 2
Examples
Modification
Threshold Values
Threshold
Description
Default Value
b1-tca
B1 BER threshold crossing alarm
10-6
b2-tca
B2 BER threshold crossing alarm
10-6
b3-tca
B3 BER threshold crossing alarm
10-6
sd-ber
Signal degrade (SD) BER threshold
10-6
sf-ber
Signal fail (SF) BER threshold
10-3
The following example sets the sf-ber threshold value to 5 (10-5):
Router(config-controller)# threshold sf-ber 5
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threshold
Related Commands
Command
Description
controller sonet
Select the physical port to configure on the Two-port STM-1/OC-3
Channelized E1/T1 line card.
report
Enable reporting of selected alarm and signal event.
show controllers sonet Displays information that is specific to SONET controllers in a Cisco 12000
series Internet Router.
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tug-2 e1 bert pattern
tug-2 e1 bert pattern
To send a BERT pattern on an E1 line that has been mapped to a TUG-3, use the tug-2 e1 bert pattern
TUG-3 configuration command. To stop the BER test, use the no form of this command.
tug-2 tug-2-number e1 e1-line-number bert pattern [2^11 | 2^15 | 2^20-QRSS] interval time
no tug-2 tug-2-number e1 e1-line-number bert pattern [2^11 | 2^15 | 2^20-QRSS] interval time
Syntax Description
tug-2-number
Specifies the TUG-2 number in the selected TUG-3; a number in the range
from 1 to 7.
e1-line-number
Specifies the E1 link being configured; a number in the range from 1 to 3.
A TUG-2 can carry three TU-12s, each of which can carry a channelized E1
frame.
2^11
(Optional) Pseudo-random repeating pattern that is 2,048 bits long.
2^15
(Optional) A pseudorandom repeating pattern that is 32767 bits long, per
ITU-T O.151. In accordance with O.151, this test pattern is inverted.
2^20-QRSS
(Optional) A pseudorandom repeating pattern that is 1048575 bits long, per
ITU-T O.151.
interval time
Specifies the duration of the BER test. The interval can be a value in the
range from 1 to 14400 minutes.
Defaults
No BER test is performed.
Command Modes
TUG-3 configuration
Command History
Release
Usage Guidelines
Modification
12.0(14)S
This command was introduced.
12.0(17)S
This command was modified to support the Two-port STM-1/OC-3
Channelized E1/T1 line card.
Bit error rate test (BERT) circuitry is built into the Two-port STM-1/OC-3 Channelized E1/T1 line card.
The Two-port STM-1/OC-3 Channelized E1/T1 supports the following pseudorandom test patterns:
•
2^11—A pseudorandom repeating pattern that is 2048 bits long.
•
2^15—A pseudorandom repeating pattern that is 32767 bits long, per ITU-T O.151. In accordance
with O.151, this test pattern is inverted.
•
2^20 QRSS—A pseudorandom repeating pattern that is 1048575 bits long, per ITU-T O.151.
With BER tests, you can accurately assess the number of errors on an E1 link and diagnose signal
problems in the field. There is only one BER test circuit for each TUG-3 of an AU-4, which means you
can run only one BER test on just one of the 21 E1 channels of the TUG-3 at any time. You can run
independent BER tests at the same time on E1 links that belong to different TUG-3s.
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tug-2 e1 bert pattern
Both the total number of error bits transmitted and the total number of bits received are available for
analysis. You can set the testing period from 1 minute to 14,400 minutes (240 hours). You can also
retrieve the error statistics anytime during the BER test.
When running a BER test, your system expects to receive the same pattern that it is transmitting. To help
ensure this, two common options are available:
•
Use a loopback somewhere in the link or network.
•
Configure remote testing equipment to transmit the same BER test pattern at the same time.
To configure a BER test for an E1 line on a Two-port STM-1/OC-3 Channelized E1/T1 line card, you
must enter SONET controller configuration mode and specify the line card slot and port, and then enter
the command mode appropriate to the selected framing type and mode of operation for the for the TUG-3
of an AU-4:
Router(config)# controller sonet 6/0
Router(config-controller)# au-4 1 tug-3 2
To view the BERT results, use the show controllers sonet privileged EXEC command. The BERT
results portion of the command output includes the following information:
•
Type of BER test pattern selected
•
Status of the test
•
Interval selected
•
Time remaining on the test
•
Total bit errors
•
Total bits received
You can view the results of a BER test at the following times:
Examples
•
After you terminate the test using the no tug-2 e1 bert pattern TUG-3 configuration command
•
After the test runs completely
•
Anytime during the test (in real time)
The following example shows how to send a BERT pseudorandom pattern of 2^11 through E1 line 1 for
5 minutes:
Router(config-ctrlr-tug3)# tug-2 4 e1 1 bert pattern 2^11 interval 5
Router(config-ctrlr-tug3)#
Related Commands
Command
Description
au-4 tug-3
Enter TUG-3 configuration mode and configure a TUG-2 of the TUG-3.
aug mapping
Specify the AUG mapping when SDH framing is selected.
show controllers sonet Displays information that is specific to SONET controllers in a Cisco 12000
series Internet Router.
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tug-2 e1 channel-group timeslots
tug-2 e1 channel-group timeslots
To configure a logical channel group on an E1 line, use the tug-2 e1 channel-group timeslots TUG-3
configuration command. To remove a channel group, use the no form of this command.
tug-2 tug-2-number e1 e1-line-number channel-group channel-group-number timeslots
lists-of-timeslots
no tug-2 tug-2-number e1 e1-line-number channel-group channel-group-number timeslots
lists-of-timeslots
Syntax Description
tug-2 tug-2-number
Specifies the TUG-2 number in the selected TUG-3; a number in the range
from 1 to 7.
e1 e1-line-number
Specifies the E1 link being configured; a number in the range from 1 to 3.
A TUG-2 can carry three TU-12s, each of which can carry a channelized E1
frame.
channel-group
channel-group-number
Defines a logical channel group, identifying the set of timeslots allocated to
this n x E0 channel in the channelized E1 line, where n is a timeslot number
in the range from 1 to 31.
timeslots
list-of-timeslots
Combination of subranges within 1 to 31 (each subrange is a list of timeslots
that makes up the E1 line).
Defaults
No default behavior or values.
Command Modes
TUG-3 configuration
Command History
Release
Modification
12.0(14)S
This command was introduced.
12.0(17)S
This command was modified to support the Two-port STM-1/OC-3
Channelized E1/T1 line card.
Usage Guidelines
E1 channels are supported under SDH framing, with AUG mapping set to AU-4. Configuration of the 63
E1s is done for each TUG-3. Each TUG-3 comprises 7 TUG-2s. Each TUG-2 can be configured to carry
up to 3 E1s mapped into TU-12s.
To configure an E1 line, you must enter SONET controller configuration mode and specify the line card
slot and port, and then enter the command mode appropriate to the selected framing type and mode of
operation for the for the TUG-3 of an AU-4:
Router(config)# controller
Router(config-controller)#
Router(config-controller)#
Router(config-controller)#
Router(config-ctrlr-tug3)#
sonet 6/0
framing sdh
aug mapping au-4
au-4 1 tug-3 2
mode c-12
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tug-2 e1 channel-group timeslots
Note
After an E1 channel group is configured, it appears to the Cisco IOS software as a serial
interface; therefore, all the configuration commands for a serial interface are available, but
not all commands are applicable to the E1 channel group.
All the encapsulation formats, such as PPP, HDLC, and Frame Relay are applicable to the
configured E1 channel group. Be sure that you are in serial interface configuration mode
when you set the encapsulation format.
All the switching types that are applicable to a serial interface are also applicable to the
configured E1 channel group.
Examples
The following example shows the first E1 line in the fourth TUG-2 group being assigned to logical
channel group 15 with channelized timeslots 1 to 5, and 20 to 23:
Router(config-ctrlr-tug3)# tug-2 4 e1 1 channel-group 15 timeslots 1-5, 20-23
Router(config-ctrlr-tug3)#
Related Commands
Command
Description
au-4 tug-3
Enter TUG-3 configuration mode and configure a TUG-2 of the TUG-3.
aug mapping
Specify the AUG mapping when SDH framing is selected.
tug-2 e1 unframed
Configure an unframed E1 line on the Two-port STM-1/OC-3 Channelized
E1/T1 line card.
show controllers sonet Displays information that is specific to SONET controllers in a Cisco 12000
series Internet Router.
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tug-2 e1 clock source
tug-2 e1 clock source
To specify where the clock source is obtained for an E1 line, use the tug-2 e1 clock source TUG-3
configuration command.
tug-2 tug-2-number e1 e1-line-number clock source {internal | line}
Syntax Description
tug-2-number
Specifies the TUG-2 number in the selected TUG-3; a number in the range
from 1 to 7.
e1-line-number
Specifies the E1 link being configured; a number in the range from 1 to 3.
A TUG-2 can carry three TU-12s, each of which can carry a channelized E1
frame.
internal
Specifies that the internal clock source is used. This is the default.
line
Specifies that the network clock source, recovered from the received signal,
is used.
Defaults
internal
Command Modes
TUG-3 configuration
Command History
Release
Modification
12.0(14)S
This command was introduced.
12.0(17)S
This command was modified to support the Two-port STM-1/OC-3
Channelized E1/T1 line card.
Usage Guidelines
On an E1 circuit, one end must provide the clock source by using the internal clock source. The other
end of the circuit can use either line or internal as the clock source.
To configure an E1 line, you must enter SONET controller configuration mode and specify the line card
slot and port, and then enter the command mode appropriate to the selected framing type and mode of
operation for the for the TUG-3 of an AU-4:
Router(config)# controller sonet 6/0
Router(config-controller)# au-4 1 tug-3 2
Examples
The following example shows how to instruct E1 line 1 to use an internal clock source:
Router(config-ctrlr-tug3)# tug-2 4 e1 1 clock source internal
Router(config-ctrlr-tug3)#
The following example shows how to instruct E1 line 1 to use a line clock source:
Router(config-ctrlr-tug3)# tug-2 4 e1 1 clock source line
Router(config-ctrlr-tug3)#
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tug-2 e1 clock source
Related Commands
Command
Description
au-4 tug-3
Enter TUG-3 configuration mode and configure a TUG-2 of the TUG-3.
aug mapping
Specify the AUG mapping when SDH framing is selected.
clock source
(controller)
Specifies the clock source for the selected OC-3/STM-1 port on the
Two-port STM-1/OC-3 Channelized E1/T1 line card.
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tug-2 e1 framing
tug-2 e1 framing
To specify the E1 framing format for an E1 line on the Two-port STM-1/OC-3 Channelized E1/T1 line
card, use the tug-2 e1 framing TUG-3 configuration command.
tug-2 tug-2-number e1 e1-line-number framing {crc4 | no-crc4}
Syntax Description
tug-2-number
Specifies the TUG-2 number in the selected TUG-3; a number in the range
from 1 to 7.
e1-line-number
Specifies the E1 link being configured; a number in the range from 1 to 3.
A TUG-2 can carry three TU-12s, each of which can carry a channelized E1
frame.
crc4
Sets the framing format to E1 with a 4-bit cyclic redundancy check (PCM31
CRC4). Default framing format is crc4.
no-crc4
Sets the framing format to E1 without a 4-bit cyclic redundancy check
(PCM31).
Defaults
crc4
Command Modes
TUG-3 configuration
Command History
Release
Modification
12.0(14)S
This command was introduced.
12.0(17)S
This command was modified to support the Two-port STM-1/OC-3
Channelized E1/T1 line card.
Usage Guidelines
You can configure any of the E1 lines as unframed E1 data lines. An unframed E1 line contains no
framing byte in timeslot 0. Unframed E1s are not divided into timeslots, thus allowing the full 2048 kbps
bandwidth to be allocated to user data. Having no framing byte nor CRC-4 error detection, unframed E1s
offer fewer performance monitoring and alarm detection capabilities than framed E1s.
To configure an E1 line, you must enter SONET controller configuration mode and specify the line card
slot and port, and then enter the command mode appropriate to the selected framing type and mode of
operation for the for the TUG-3 of an AU-4:
Router(config)# controller sonet 6/0
Router(config-controller)# au-4 1 tug-3 2
Examples
The following example shows how to set crc4 framing format for E1 line 1:
Router(config-ctrlr-tug3)# tug-2 4 e1 1 crc4
Router(config-ctrlr-tug3)#
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tug-2 e1 framing
The following example shows how to set no-crc4 framing format for E1 line 1:
Router(config-ctrlr-tug3)# tug-2 4 e1 1 no-crc4
Router(config-ctrlr-tug3)#
Related Commands
Command
Description
au-4 tug-3
Enter TUG-3 configuration mode and configure a TUG-2 of the TUG-3.
aug mapping
Specify the AUG mapping when SDH framing is selected.
tug-2 e1 unframed
Configure an unframed E1 line.
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tug-2 e1 loopback
tug-2 e1 loopback
To set a loopback on an E1 line on the Two-port STM-1/OC-3 Channelized E1/T1 line card, use the tug-2
e1 loopback TUG-3 configuration command. To remove a loopback, use the no form of this command.
tug-2 tug-2-number e1 e1-line-number loopback {local | network {line | payload}}
no tug-2 tug-2-number e1 e1-line-number loopback {local | network {line | payload}}
Syntax Description
tug-2-number
Specifies the TUG-2 number in the selected TUG-3; a number in the range
from 1 to 7.
e1-line-number
Specifies the E1 link being configured; a number in the range from 1 to 3.
A TUG-2 can carry three TU-12s, each of which can carry a channelized E1
frame.
local
Loops the router output data back toward the router at the E1 framer.
network line
Loops the data back toward the network before the E1 framer.
network payload
Sets a loopback that works much like the network line loopback, except
that the E1 framing bits are stripped at the receive side of the E1 framer and
regenerated at the transmit side of the E1 framer (toward the network).
If the E1 channel is configured for internal clocking and you attempt to set
a network payload loopback, you will receive the following warning
message:
This channel is configured for Internal clocking. Data integrity
in network payload loopback is guaranteed only if the opposite
end is configured for Line clocking, or vice versa.
Either the local port should be internal, and the remote port line, or the
local port should be line, and the remote port internal.
Defaults
No loopback is set.
Command Modes
TUG-3 configuration
Command History
Release
Modification
12.0(14)S
This command was introduced.
12.0(17)S
This command was modified to support the Two-port STM-1/OC-3
Channelized E1/T1 line card.
Usage Guidelines
To configure a loopback for an E1 line on a Two-port STM-1/OC-3 Channelized E1/T1 line card, you
must enter SONET controller configuration mode and specify the line card slot and port, and then enter
the command mode appropriate to the selected framing type and mode of operation for the for the TUG-3
of an AU-4:
Router(config)# controller sonet 6/0
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tug-2 e1 loopback
Router(config-controller)# au-4 1 tug-3 2
Examples
The following example shows how to set a local loopback on an E1 line:
Router(config-ctrlr-tug3)# tug-2 4 e1 1 loopback local
Router(config-ctrlr-tug3)#
The following example shows how to set a network line loopback on an E1 line:
Router(config-ctrlr-tug3)# tug-2 4 e1 1 loopback network line
Router(config-ctrlr-tug3)#
The following example shows how to set a network payload loopback on an E1 line:
Router(config-ctrlr-tug3)# tug-2 4 e1 1 loopback network payload
Router(config-ctrlr-tug3)#
Related Commands
Command
Description
au-4 tug-3
Enter TUG-3 configuration mode and configure a TUG-2 of the TUG-3.
aug mapping
Specify the AUG mapping when SDH framing is selected.
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tug-2 e1 national bits
tug-2 e1 national bits
To configure the national reserve bit pattern for an E1 line on a Two-port STM-1/OC-3 Channelized
E1/T1 line card, use the tug-2 e1 national bits TUG-3 configuration command.
tug-2 tug-2-number e1 e1-line-number national bits pattern
Syntax Description
tug-2-number
Specifies the TUG-2 number in the selected TUG-3; a number in the range
from 1 to 7.
e1-line-number
Specifies the E1 link being configured; a number in the range from 1 to 3.
A TUG-2 can carry three TU-12s, each of which can carry a channelized E1
frame.
pattern
A value in the range from 0x0 to 0x1F (hexadecimal) or 0 to 31 (decimal).
The default value is 0x1F hexadecimal (or 31 decimal).
Defaults
0x1F hexadecimal (or 31 decimal)
Command Modes
TUG-3 configuration
Command History
Release
Usage Guidelines
Modification
12.0(14)S
This command was introduced.
12.0(17)S
This command was modified to support the Two-port STM-1/OC-3
Channelized E1/T1 line card.
To configure an E1 line, you must enter SONET controller configuration mode and specify the line card
slot and port, and then enter the command mode appropriate to the selected framing type and mode of
operation for the for the TUG-3 of an AU-4:
Router(config)# controller sonet 6/0
Router(config-controller)# au-4 1 tug-3 2
Examples
The following example sets the national bit pattern to 0x0 on the first E1 line in the fourth TUG-2:
Router(config-ctrlr-tug3)# tug-2 4 e1 1 national bits 0x0
Router(config-ctrlr-tug3)#
Related Commands
Command
Description
au-4 tug-3
Enter TUG-3 configuration mode and configure a TUG-2 of the TUG-3.
aug mapping
Specify the AUG mapping when SDH framing is selected.
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tug-2 e1 unframed
tug-2 e1 unframed
To configure an unframed E1 line on the Two-port STM-1/OC-3 Channelized E1/T1 line card, use the
tug-2 e1 unframed TUG-3 configuration command. To remove an unframed channel group, use the no
form of this command.
tug-2 tug-2-number e1 e1-line-number unframed
no tug-2 tug-2-number e1 e1-line-number unframed
Syntax Description
tug-2-number
Specifies the TUG-2 number in the selected TUG-3; a number in the range
from 1 to 7.
e1-line-number
Specifies the E1 link being configured; a number in the range from 1 to 3.
A TUG-2 can carry three TU-12s, each of which can carry a channelized E1
frame.
Defaults
No default behavior or values.
Command Modes
TUG-3 configuration
Command History
Release
Modification
12.0(14)S
This command was introduced.
12.0(17)S
This command was modified to support the Two-port STM-1/OC-3
Channelized E1/T1 line card.
Usage Guidelines
You can configure any of the E1 lines as unframed E1 data lines. An unframed E1 line contains no
framing byte in timeslot 0. Unframed E1s are not divided into timeslots, thus allowing the full 2048 kbps
bandwidth to be allocated to user data. Having no framing byte nor CRC-4 error detection, unframed E1s
offer fewer performance monitoring and alarm detection capabilities than framed E1s.
To configure an E1 line, you must enter SONET controller configuration mode and specify the line card
slot and port, and then enter the command mode appropriate to the selected framing type and mode of
operation for the for the TUG-3 of an AU-4:
Router(config)# controller sonet 6/0
Router(config-controller)# au-4 1 tug-3 2
Note
After an unframed E1 logical channel group is configured, it appears to the Cisco IOS
software as a serial interface with channel group number zero. The configuration command
in the following example creates a serial interface with the following address: interface
serial 6/0.1/2/4/1:0.
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tug-2 e1 unframed
Examples
The following example shows the first E1 line in the fourth TUG-2 group, second TUG-3, first AU-4 of
the first port on the Two-port STM-1/OC-3 Channelized E1/T1 line card in slot 6 being configured as an
unframed E1:
Router(config)# controller sonet 6/0
Router(config-controller)# au-4 1 tug-3 2
Router(config-ctrlr-tug3)# tug-2 4 e1 1 unframed
Router(config-ctrlr-tug3)#
Related Commands
Command
Description
au-4 tug-3
Enter TUG-3 configuration mode and configure a TUG-2 of the TUG-3.
aug mapping
Specify the AUG mapping when SDH framing is selected.
tug-2 e1 channel-group
timeslots
Configure a logical channel group on an E1 line.
show controllers sonet
Displays information that is specific to SONET controllers in a Cisco 12000
series Internet Router.
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Glossary
Glossary
ACL—Access Control List. Access lists filter network traffic by controlling whether routed packets are
forwarded or blocked at the router’s interfaces. The router examines each packet to determine whether
to forward or drop the packet, based on the criteria specified within the access lists. See also EACL.
ADM—Add Drop Multiplexer. A multiplexer capable of extracting lower-rate signals from, and
inserting lower-rate signals into, a higher-rate multiplexed signal without completely demultiplexing the
signal.
AU—Administrative Unit.
AU-n—Administrative Unit–level n (n=3 or 4).
BERT—Bit Error Rate Test. Bit error rate is the probability that a bit error could occur on any given bit
on a line.
C-n—Container–level n (n=11, 12, 2, 3, or 4).
CAR—Committed Access Rate. A Cisco IOS software feature that allows a stream of traffic to be rate
limited and given a user-specified priority.
COS—Class of Service.
CRC—Cyclic Redundancy Check. A technique for using overhead bits to detect transmission errors.
CT3—Channelized T3.
DMLP—Distributed Multilink PPP.
DRR—Deficit Round Robin. A queuing policy that provides the capability to provide expeditious
handling for high priority traffic without starving lower priority traffic.
DS1—Digital Signal Level 1. A U.S. standard for high-speed data transmission over a T1 line at a data
rate of 1.544 megabits per second (Mbps).
DS3—Digital Signal Level 3. A U.S. standard for high-speed data transmission over a T3 line at a data
rate of 44.736 Mbps.
DSU—Data Service Unit. Part of the customer premises equipment used to interface to a digital circuit.
A fancy name for a high speed modem (with data rates of 34 or 45 Mbps).
E1—European digital carrier facility used for transmitting data through the telephone hierarchy. The
transmission rate for E1 is 2.048 Mbps.
EACL—Extended Access Lists. Extended form of ACLs; more criteria are available for classifying
traffic.
ESF—Extended Super Frame. Framing type used on T1 circuits. It consists of 24 frames of 192 bits each
with the 193rd bit providing timing and other functions. ESF is an enhanced version of Super Frame (SF)
format.
FEAC—Far End Alarm and Control. A DS3 low speed subchannel.
FDL—Facility Data Link. A 4-Kbps channel provided by the ESF T1 framing format. The FDL performs
outside the payload capacity and allows a service provider to check error statistics on terminating
equipment without intrusion.
HDLC—High-level Data Link Control. A bit oriented data link control protocol.
LOF—Loss of Frame.
LOS—Loss of Signal.
M13—An ANSI T1.107 framing format that directly multiplexes 28 DS1 signals into a DS3 signal.
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Glossary
M23—An ANSI T1.107 framing format that multiplexes 7 asynchronous DS2 signals into the DS3.
Because the C-bits are used for bit stuffing, no CRC, FEBE, or MDL channels are available. Four DS1
signals are then multiplexed into each of the 7 DS2s for a total of 28 DS1s.
MFR—Multilink Frame Relay.
MLP—Multi Link PPP.
MPLS—Multiprotocol Label Switching.
Multilink PPP—Multilink Point-to-Point Protocol (MLP). See RFC 1990.
OC-3—Optical Carrier number 3 – 155 Mbps rate SONET interface.
PPP—Point-to-Point Protocol. See RFC 1661.
Precedence—A 3-bit field within the TOS bits.
QOS—Quality of Service.
RED—Random Early Discard. A congestion management scheme.
RSVP—Resource Reservation Protocol. IP protocol for flow control & QOS control.
SF—Super Frame. A DS1 framing format composed of 12 DS1 frames.
SNMP—Simple Network Management Protocol. Internet standard for remote management of network
devices.
SPE—Synchronous Payload Envelope.
STM—Synchronous Transport Module.
STM-N—Synchronous Transport Module–Level N (N x 155.52 Mbps: N = 1, 4, 16, or 64)
STS—Synchronous Transport Signal.
STS-N—Synchronous Transport Signal–Level N (N x 51.84 Mbps: N = 1, 3, 12, 48, or 192)
T1—A digital carrier facility used to transmit a DS1 formatted digital stream at 1.544 Mbps.
T3—A digital carrier facility used to transmit a DS3 formatted digital stream at 44.746 Mbps.
TOS—Type of Service. 8 bits in the IP header governing Quality of Service.
TU-n—Tributary Unit–level n (n=11, 12, 2, or 3).
TUG-n—Tributary Unit Group n (n=2 or 3).
WRED—Weighted RED. A variation of RED.
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