Cisco uBR10012 OC-48 DPT/POS Interface
Module
Document part number: OL-3488-02
September 2004
Part numbers: UBR10-SRP-OC48SMS, UBR10-SRP-OC48SML, ESR10C48/P/SRPSMS, ESR10C48/P/SRPSML
Date
Revision
Reason
10/07/2004
OL-3488-02
Updated format and PRE information
Purpose
This document provides information about the Cisco uBR10012 OC48-DPT/POS interface module.
Review this document when installing or removing the Cisco uBR10012 OC48-DPT/POS interface
module in the Cisco uBR10012 universal broadband router.
Audience
This document is intended for use by a field service engineer who is familiar with Cisco products and
headend cable installation procedures.
Warning
Only trained and qualified personnel should be allowed to install, replace, or service this equipment.
Statement 1030
Corporate Headquarters:
Cisco Systems, Inc., 170 West Tasman Drive, San Jose, CA 95134-1706 USA
Copyright © 2004 Cisco Systems, Inc. All rights reserved.
Contents
Contents
Purpose, page 1
Audience, page 1
Contents, page 2
Introduction, page 2
Physical Description, page 3
Component Part Numbers and Technical Specifications, page 5
Safety and Warning Information, page 6
Removing the Cisco uBR10012 OC-48 DPT/POS Interface Module, page 12
Installing the Cisco uBR10012 OC-48 DPT/POS Interface Module, page 14
Making the Optical Connections, page 15
Optical Link Loss Budgets and Attenuation, page 20
Troubleshooting, page 21
Related Documentation, page 21
Obtaining Documentation, page 22
Documentation Feedback, page 23
Obtaining Technical Assistance, page 23
Obtaining Additional Publications and Information, page 24
Introduction
The Cisco uBR10012 OC-48 dynamic packet transport (DPT) and Packet-over-SONET interface module
is a full-height line card for the Cisco uBR10012 universal broadband router. This card provides trunk
uplink capabilities that support up to 1.4 Gbps full duplex throughput over a standard SONET/ITU-T
Synchronous Digital Hierarchy (SDH) interface, using a single-mode fiber with SC connectors.
Two versions of the Cisco uBR10012 OC-48 DPT/POS interface module are available—short reach (SR)
or long reach (LR). Both versions work with the performance routing engine (PRE).
The Cisco uBR10012 OC-48 DPT/POS interface module provides a point-to-point connection to a
backbone router and encapsulates IP packets with byte-wise high level data link control (HDLC)
framing, placing them directly into the OC-48 SONET (or SDH) payload.
The Cisco uBR10012 OC-48 DPT/POS interface module is a standard implementation of
Packet-over-SONET switching and supports the following features:
Note
•
OC-48 bandwidth between the line card and the performance routing engine (PRE)
•
North American (SONET) and European (SDH) formats
•
Automatic protection switching (APS)
•
Alarm processing
Two Cisco uBR10012 OC-48 DPT/POS interface modules are required when using the card in DPT
mode in a Cisco uBR10012 universal broadband router.
Cisco uBR10012 OC-48 DPT/POS Interface Module
2
OL-3488-02
Physical Description
Physical Description
Figure 1 shows the faceplate of the Cisco uBR10012 OC-48 DPT/POS interface module.
Figure 1
Cisco uBR10012 OC-48 DPT/POS Interface Module Faceplate
RX
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PA RU
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Captive screw
OC–48/STM–16 POS/SRP SM–LR
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P/N ESR-10C48/P/SRP-SMS
82927
CISCO
10000
Ejector lever
Table 1describes the status of the LEDs.
Table 1
LED Status and Description
LED
Status
Description
FAIL
Yellow
Off
Line card is disabled
Line card is operational
ENABLE
Green
Off
Port is enabled
Port is disabled
POS
Green
Off
Operating in POS mode
Not operating in POS mode
SRP
Green
Off
Operating in SRP/DPT mode
Not operating in SRP/DPT mode
CD
Green
Off
Carrier detected
No carrier detected
TX
Green
Off
Packets transported
No packets transported
RX
Green
Off
Packets received
No packets received
SYNC
Green
Off
Card synchronized to mate card
Yellow
Off
Interface is wrapped
Yellow
Off
DPT port line is in a pass-through state
WRAP
PASS THRU
Card not synchronized
Interface not wrapped
DPT port line not in pass-through state
Cisco uBR10012 OC-48 DPT/POS Interface Module
OL-3488-02
3
Physical Description
Figure 2
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uBR10-MC5x20S-D
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Slot Locations for the Cisco uBR10012 OC-48 DPT/POS Interface Module
US0
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DS0
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DS1
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DS4
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DS2
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82928
OC–48/STM–16 POS/SRP SM–LR
OC–48/STM–16 POS/SRP SM–LR
OC–48/STM–16 POS/SRP SM–LR
OC–48/STM–16 POS/SRP SM–LR
Note
The Cisco uBR10012 OC-48 DPT/POS interface modules must be installed in adjacent slots for DPT
operation.
Cisco uBR10012 OC-48 DPT/POS Interface Module
4
OL-3488-02
Component Part Numbers and Technical Specifications
Component Part Numbers and Technical Specifications
Table 2 lists the part numbers for the Cisco uBR10012 OC-48 DPT/POS interface module.
Table 2
Cisco uBR10012 OC-48 Interface Module Specifications
Description
Single-mode, short-reach modules
Specification
•
Spares (2)—UBR10-SRP-OC48SMS=
•
Spare (1)—ESR1OC48/P/SRPSMS=
•
Spares (2)—UBR10-SRP-OC48SML=
•
Spare (1)—ESR1OC48/P/SRPSML=
Blank slot cover
•
ESR-LC-COVER=
Card dimensions
•
Width: 1.12 in (2.83 cm)
•
Height: 16.0 in. (40.64 cm)
•
Depth: 9.87 in. (25.32 cm)
Weight
•
4.75 lb (2.16 kg)
Power budget
•
28W1 (95.54 BTU/hr2)
MTBF per card
•
SMS—216,018 hours
•
SML—215,068 hours
•
Operating: 41 to 104 F (5 to 40 C)
•
Non-operating: –4 to 149 F (–20 to 65 C)
•
Operating: 10 to 90% noncondensing
•
Non-operating: 5 to 95%
Operating altitude
•
–197 to 13,123 ft. (–60 to 4000 m)
Standards, compliance, protocols
•
GR253
•
ITU G.707, ITU G.957
•
Cisco IOS Release 12.2(13)BC3 or later release
Single-mode, long-reach modules
Temperature range
Relative humidity
Software requirements
Cable specifications
Cable (yellow)—single-mode fiber-optic cable with simplex SC/PC type connectors
Wavelength, nm
•
SMS—1310, SML–1550
Core size, microns
•
8 to 10
Cable link budget
•
SMS—7dB typical, SML—24 dB typical
1. W = Watts
2. BTU = British thermal units
Cisco uBR10012 OC-48 DPT/POS Interface Module
OL-3488-02
5
Safety and Warning Information
Safety and Warning Information
Electrical Equipment Guidelines
Follow these basic guidelines when working with any electrical equipment:
•
Before beginning any procedures requiring access to the chassis interior, locate the emergency
power-off switch for the room in which you are working.
•
Disconnect all power and external cables before moving a chassis.
•
Do not work alone when potentially hazardous conditions exist.
•
Never assume that power has been disconnected from a circuit; always check.
•
Do not perform any action that creates a potential hazard to people or makes the equipment unsafe.
•
Carefully examine your work area for possible hazards such as moist floors, ungrounded power
extension cables, and missing safety grounds.
Preventing Electrostatic Discharge Damage
Electrostatic discharge (ESD) damage, which occurs when electronic cards or components are
improperly handled, can result in complete or intermittent failures. The AC-input power shelf and its AC
power modules contain a printed circuit card that is fixed in a metal carrier. Electromagnetic interference
(EMI) shielding and connectors are integral components of the carrier. Although the metal carrier helps
to protect the cards from ESD, use an antistatic strap each time you handle the modules.
Following are guidelines for preventing ESD damage:
Caution
•
Always use an ESD-preventive wrist or ankle strap and ensure that it makes good skin contact.
Before removing a card from the chassis, connect the equipment end of the strap to a bare metal,
unpainted surface on the chassis or rack.
•
Handle components by the carrier edges only; avoid touching the card components or any connector
pins.
•
When removing a module, place it on an antistatic surface or in a static-shielding bag. If the module
will be returned to the factory, immediately place it in a static-shielding bag.
•
Avoid contact between the modules and clothing. The wrist strap protects the card from ESD
voltages on the body only; ESD voltages on clothing can still cause damage.
For safety, periodically check the resistance value of the antistatic strap. The measurement should be
between 1 and 10 megohms.
Cisco uBR10012 OC-48 DPT/POS Interface Module
6
OL-3488-02
Safety and Warning Information
Warning Translations
To see translations of the warnings that appear in this document, go to the following URL:
http://www.cisco.com/en/US/docs/cable/cmts/ubr10012/regulatory/compliance/ub10rcsi.html
Warning Definition
Warning
IMPORTANT SAFETY INSTRUCTIONS
This warning symbol means danger. You are in a situation that could cause bodily injury. Before you
work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar
with standard practices for preventing accidents. Use the statement number provided at the end of
each warning to locate its translation in the translated safety warnings that accompanied this
device. Statement 1071
SAVE THESE INSTRUCTIONS
Waarschuwing
BELANGRIJKE VEILIGHEIDSINSTRUCTIES
Dit waarschuwingssymbool betekent gevaar. U verkeert in een situatie die lichamelijk letsel kan
veroorzaken. Voordat u aan enige apparatuur gaat werken, dient u zich bewust te zijn van de bij
elektrische schakelingen betrokken risico's en dient u op de hoogte te zijn van de standaard
praktijken om ongelukken te voorkomen. Gebruik het nummer van de verklaring onderaan de
waarschuwing als u een vertaling van de waarschuwing die bij het apparaat wordt geleverd, wilt
raadplegen.
BEWAAR DEZE INSTRUCTIES
Varoitus
TÄRKEITÄ TURVALLISUUSOHJEITA
Tämä varoitusmerkki merkitsee vaaraa. Tilanne voi aiheuttaa ruumiillisia vammoja. Ennen kuin
käsittelet laitteistoa, huomioi sähköpiirien käsittelemiseen liittyvät riskit ja tutustu
onnettomuuksien yleisiin ehkäisytapoihin. Turvallisuusvaroitusten käännökset löytyvät laitteen
mukana toimitettujen käännettyjen turvallisuusvaroitusten joukosta varoitusten lopussa näkyvien
lausuntonumeroiden avulla.
SÄILYTÄ NÄMÄ OHJEET
Attention
IMPORTANTES INFORMATIONS DE SÉCURITÉ
Ce symbole d'avertissement indique un danger. Vous vous trouvez dans une situation pouvant
entraîner des blessures ou des dommages corporels. Avant de travailler sur un équipement, soyez
conscient des dangers liés aux circuits électriques et familiarisez-vous avec les procédures
couramment utilisées pour éviter les accidents. Pour prendre connaissance des traductions des
avertissements figurant dans les consignes de sécurité traduites qui accompagnent cet appareil,
référez-vous au numéro de l'instruction situé à la fin de chaque avertissement.
CONSERVEZ CES INFORMATIONS
Cisco uBR10012 OC-48 DPT/POS Interface Module
OL-3488-02
7
Safety and Warning Information
Warnung
WICHTIGE SICHERHEITSHINWEISE
Dieses Warnsymbol bedeutet Gefahr. Sie befinden sich in einer Situation, die zu Verletzungen
führen kann. Machen Sie sich vor der Arbeit mit Geräten mit den Gefahren elektrischer Schaltungen
und den üblichen Verfahren zur Vorbeugung vor Unfällen vertraut. Suchen Sie mit der am Ende jeder
Warnung angegebenen Anweisungsnummer nach der jeweiligen Übersetzung in den übersetzten
Sicherheitshinweisen, die zusammen mit diesem Gerät ausgeliefert wurden.
BEWAHREN SIE DIESE HINWEISE GUT AUF.
Avvertenza
IMPORTANTI ISTRUZIONI SULLA SICUREZZA
Questo simbolo di avvertenza indica un pericolo. La situazione potrebbe causare infortuni alle
persone. Prima di intervenire su qualsiasi apparecchiatura, occorre essere al corrente dei pericoli
relativi ai circuiti elettrici e conoscere le procedure standard per la prevenzione di incidenti.
Utilizzare il numero di istruzione presente alla fine di ciascuna avvertenza per individuare le
traduzioni delle avvertenze riportate in questo documento.
CONSERVARE QUESTE ISTRUZIONI
Advarsel
VIKTIGE SIKKERHETSINSTRUKSJONER
Dette advarselssymbolet betyr fare. Du er i en situasjon som kan føre til skade på person. Før du
begynner å arbeide med noe av utstyret, må du være oppmerksom på farene forbundet med
elektriske kretser, og kjenne til standardprosedyrer for å forhindre ulykker. Bruk nummeret i slutten
av hver advarsel for å finne oversettelsen i de oversatte sikkerhetsadvarslene som fulgte med denne
enheten.
TA VARE PÅ DISSE INSTRUKSJONENE
Aviso
INSTRUÇÕES IMPORTANTES DE SEGURANÇA
Este símbolo de aviso significa perigo. Você está em uma situação que poderá ser causadora de
lesões corporais. Antes de iniciar a utilização de qualquer equipamento, tenha conhecimento dos
perigos envolvidos no manuseio de circuitos elétricos e familiarize-se com as práticas habituais de
prevenção de acidentes. Utilize o número da instrução fornecido ao final de cada aviso para
localizar sua tradução nos avisos de segurança traduzidos que acompanham este dispositivo.
GUARDE ESTAS INSTRUÇÕES
¡Advertencia!
INSTRUCCIONES IMPORTANTES DE SEGURIDAD
Este símbolo de aviso indica peligro. Existe riesgo para su integridad física. Antes de manipular
cualquier equipo, considere los riesgos de la corriente eléctrica y familiarícese con los
procedimientos estándar de prevención de accidentes. Al final de cada advertencia encontrará el
número que le ayudará a encontrar el texto traducido en el apartado de traducciones que acompaña
a este dispositivo.
GUARDE ESTAS INSTRUCCIONES
Cisco uBR10012 OC-48 DPT/POS Interface Module
8
OL-3488-02
Safety and Warning Information
Varning!
VIKTIGA SÄKERHETSANVISNINGAR
Denna varningssignal signalerar fara. Du befinner dig i en situation som kan leda till personskada.
Innan du utför arbete på någon utrustning måste du vara medveten om farorna med elkretsar och
känna till vanliga förfaranden för att förebygga olyckor. Använd det nummer som finns i slutet av
varje varning för att hitta dess översättning i de översatta säkerhetsvarningar som medföljer denna
anordning.
SPARA DESSA ANVISNINGAR
Cisco uBR10012 OC-48 DPT/POS Interface Module
OL-3488-02
9
Safety and Warning Information
Aviso
INSTRUÇÕES IMPORTANTES DE SEGURANÇA
Este símbolo de aviso significa perigo. Você se encontra em uma situação em que há risco de lesões
corporais. Antes de trabalhar com qualquer equipamento, esteja ciente dos riscos que envolvem os
circuitos elétricos e familiarize-se com as práticas padrão de prevenção de acidentes. Use o
número da declaração fornecido ao final de cada aviso para localizar sua tradução nos avisos de
segurança traduzidos que acompanham o dispositivo.
GUARDE ESTAS INSTRUÇÕES
Advarsel
VIGTIGE SIKKERHEDSANVISNINGER
Dette advarselssymbol betyder fare. Du befinder dig i en situation med risiko for
legemesbeskadigelse. Før du begynder arbejde på udstyr, skal du være opmærksom på de
involverede risici, der er ved elektriske kredsløb, og du skal sætte dig ind i standardprocedurer til
undgåelse af ulykker. Brug erklæringsnummeret efter hver advarsel for at finde oversættelsen i de
oversatte advarsler, der fulgte med denne enhed.
GEM DISSE ANVISNINGER
Cisco uBR10012 OC-48 DPT/POS Interface Module
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OL-3488-02
Safety and Warning Information
Cisco uBR10012 OC-48 DPT/POS Interface Module
OL-3488-02
11
Removing the Cisco uBR10012 OC-48 DPT/POS Interface Module
Removing the Cisco uBR10012 OC-48 DPT/POS Interface Module
Tip
Remove one module at a time and wait at least 15 seconds before inserting another module to allow the
system time to reinitalize.
Step 1
Make sure that you are properly grounded. An ESD-preventive strap is provided.
Step 2
Remove all cabling from the module.
Warning
Invisible laser radiation may be emitted from disconnected fibers or connectors. Do not stare into
beams or view directly with optical instruments. Statement 1051
Step 3
Place protective caps on the optical connections (cables and bulkhead).
Step 4
Loosen the top and bottom captive screws on the module.
Step 5
Simultaneously pivot both ejector levers away from the module.
Step 6
Slide the module out of the slot and place it on an antistatic surface.
Step 7
Install a blank slot cover if you are not installing a replacement interface module.
Warning
Blank faceplates and cover panels serve three important functions: they prevent exposure to
hazardous voltages and currents inside the chassis; they contain electromagnetic interference (EMI)
that might disrupt other equipment; and they direct the flow of cooling air through the chassis. Do not
operate the system unless all cards, faceplates, front covers, and rear covers are in place.
Statement 1029
Cisco uBR10012 OC-48 DPT/POS Interface Module
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OL-3488-02
Removing the Cisco uBR10012 OC-48 DPT/POS Interface Module
Figure 3
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Removing the Cisco uBR10012 OC-48 DPT/POS Interface Module from the Router
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82929
OC–48/STM–16 POS/SRP SM–LR
OC–48/STM–16 POS/SRP SM–LR
OC–48/STM–16 POS/SRP SM–LR
OC–48/STM–16 POS/SRP SM–LR
OC–48/STM–16 POS/SRP SM–LR
Ejector levers
Captive screws
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Installing the Cisco uBR10012 OC-48 DPT/POS Interface Module
Installing the Cisco uBR10012 OC-48 DPT/POS Interface Module
Tip
Insert one module at a time. Wait at least 15 seconds before inserting another module to allow the system
time to reinitalize.
Note
For DPT packet ring protection, install the modules in adjacent slots.
Step 1
Make sure that you are properly grounded. An ESD-preventive strap is provided.
Step 2
Check the connector pins, ensure that no pins are bent or broken.
Step 3
Open the ejector levers on the interface module.
Step 4
Hold the faceplate with one hand and place your other hand under the interface module.
Warning
Invisible laser radiation may be emitted from disconnected fibers or connectors. Do not stare into
beams or view directly with optical instruments. Statement 1051
Step 5
Align the upper and lower edges of the interface module with the upper and lower guides in the chassis.
Step 6
Slide the interface module into the chassis until you feel it seat in the backplane connectors.
Step 7
Simultaneously pivot the ejector levers toward each other to secure the module in the chassis.
Tip
Step 8
Tip
The FAIL LED stays on for approximately 1 second and then goes off after the module cycles through
the self-test.
Tighten the captive screws.
Properly tightened captive screws ensure proper EMI shielding.
Cisco uBR10012 OC-48 DPT/POS Interface Module
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OL-3488-02
Making the Optical Connections
Figure 4
PO
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uBR10-MC5x20S-D
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uBR10-MC5x20S-D
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Installing the Cisco uBR10012 OC-48 DPT/POS Interface Module in the Router
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OC–48/STM–16 POS/SRP SM–LR
OC–48/STM–16 POS/SRP SM–LR
OC–48/STM–16 POS/SRP SM–LR
OC–48/STM–16 POS/SRP SM–LR
OC–48/STM–16 POS/SRP SM–LR
DS
Making the Optical Connections
Optical connectors are very sensitive to any dust particles or other contaminants. Cleaning the optical
connections on the cables and verifying the output power of the interface module helps to prevent
damage to the fiber optics and system failure. Always clean fiber-optic connections before installing the
cables.
Tip
It is a good idea to inspect and clean the bulkhead connection first and then inspect and clean the fiber
cable just before you install it into the bulkhead connector.
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Making the Optical Connections
Follow these steps to connect the optical cables to the transmit (TX) and receive (RX) ports.
•
Cleaning and Checking the Bulkhead Optical Connectors, page 16
•
Cleaning and Inspecting the Cable Fiber-Optic Connectors, page 18
Cleaning and Checking the Bulkhead Optical Connectors
Tip
To keep the connections as clean and contaminant-free as possible, always use protective caps on the
connectors when they are not cabled.
Tools
Caution
•
Optical power source
•
Fiber-optic test jumper with appropriate connectors
•
Optical fiberscope
•
Lint-free swabs
•
Protective caps
Cisco does not recommend the use of isopropyl alcohol to clean the bulkhead connectors. Improper use
of isopropyl alcohol can cause liquid residue and cause damage to the endface.
Clean the Bulkhead Connector
Clean the bulkhead connectors whenever you remove or install fiber-optic cables or remove a protective
cap.
Step 1
Caution
Step 2
Warning
Step 3
Clean the bulkhead using a lint-free swab.
a.
Insert the lint-free swab into the bulkhead.
b.
Turn the swab several complete revolutions in the same direction.
c.
Dispose of the swab in the appropriate manner.
Do not reuse the swab after initial use.
Check the power level on the bulkhead connector.
Invisible laser radiation may be emitted from the end of the unterminated fiber cable or connector. Do
not view directly with optical instruments. Viewing the laser output with certain optical instruments
(for example, eye loupes, magnifiers, and microscopes) within a distance of 100 mm may pose an eye
hazard. Statement 1056
Clean and install a protective cap on the connector if you are not going to immediately install a
fiber-optic cable.
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Making the Optical Connections
Check the Bulkhead Transmit Power
Tip
Step 1
Warning
Always clean the bulkhead connectors and the test jumper connectors before inserting the connectors
into the bulkhead and the power source. Dirty jumper connectors can contaminate the bulkhead
connector and cause incorrect power level readings.
Remove the protective cap from the bulkhead connector on the interface module.
Invisible laser radiation may be emitted from the end of the unterminated fiber cable or connector. Do
not view directly with optical instruments. Viewing the laser output with certain optical instruments
(for example, eye loupes, magnifiers, and microscopes) within a distance of 100 mm may pose an eye
hazard. Statement 1056
Step 2
Plug a clean test jumper into the bulkhead connector.
Step 3
Plug the other end of the test jumper into the power source.
Tip
Step 4
Caution
For accurate power readings, make sure that all optical connectors have been cleaned.
Measure the TX output power level. Make sure that the TX power is at or above the minimum guaranteed
transmit level. See Table 3 for specifications.
Excessive transmit signal levels at a receiver port can damage the module.
.
Table 3
Step 5
Transmit and Receive Signal Levels
Description
Specification
Optical transmit power
SMS (–10 to –3 dBm)
SML (–2 to +3 dBm)
Optical receive power
SMS (–18 to –3 dBm)
SML (–28 to –9 dBm)
If the power level is less than the accepted loss level, clean the bulkhead using a lint-free swab. See the
“Clean the Bulkhead Connector” section on page 16.
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17
Making the Optical Connections
Cleaning and Inspecting the Cable Fiber-Optic Connectors
Tip
To keep the connections as clean and contaminant-free as possible, always use protective caps on the
connections when they are not cabled or being cleaned. For accurate power readings, always clean the
connector before measuring the power level or installing the connector in the bulkhead.
Tools
•
Fiber-optic power source
•
Video or optical fiberscopes for the fiber cable connectors
•
Lint-free swabs and wipes
•
Cartridge cleaner
•
Protective caps
Clean the Fiber-Optic Cable Connectors
Clean the fiber-optic connections whenever you remove or install fiber-optic cables or remove a
protective cap.
Step 1
Make sure that both ends of the cable are disconnected from any equipment or patch panel.
Step 2
Remove the protective cap from the fiber cable connector.
Warning
Step 3
Caution
Note
Invisible laser radiation may be emitted from the end of the unterminated fiber cable or connector. Do
not view directly with optical instruments. Viewing the laser output with certain optical instruments
(for example, eye loupes, magnifiers, and microscopes) within a distance of 100 mm may pose an eye
hazard. Statement 1056
Clean the connector using the cartridge cleaner:
a.
Hold the fiber tip lightly against the cleaning area.
b.
Rotate the fiber once 90 degrees.
c.
Pull the fiber tip down the exposed cleaning area.
Do not scrub the fiber against the fabric. Scrubbing the fiber creates particles.
For more information about cleaning procedures for fiber-optic connectors go to the following URL:
http://www.cisco.com/en/US/tech/tk482/tk876/technologies_white_paper09186a0080254eba.shtml
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Making the Optical Connections
Inspect the Fiber-Optic Connections
Tip
Step 1
Warning
Inspecting and cleaning fiber-optic connections before installing them into the bulkhead can prevent
damage to the fiber-optic endface.
Make sure that both ends of the cable are disconnected from any equipment or patch panel.
Invisible laser radiation may be emitted from the end of the unterminated fiber cable or connector. Do
not view directly with optical instruments. Viewing the laser output with certain optical instruments
(for example, eye loupes, magnifiers, and microscopes) within a distance of 100 mm may pose an eye
hazard. Statement 1056
Step 2
Inspect the cable connector using the video or optical fiberscope.
Step 3
Clean the connector again, if necessary.
Step 4
For receive (RX) cables, measure the power using an optical power source.
Make sure that the RX power levels are at or above the minimum guaranteed receive level but not above
the maximum level. See Table 3 on page 17 for specifications.
Caution
Excessive transmit signal levels at the receiver port can damage the module.
Step 5
Clean and install an optical attenuator on the RX cable if the signal is out of range. For information about
attenuation see the “Optical Link Loss Budgets and Attenuation” section on page 20.
Step 6
Clean the cable/attenuator connector plug.
Step 7
Use an optical power source to verify that receiver signal levels are within specifications. See Table 3
on page 17.
Caution
Always clean the bulkhead connector and the fiber-optic cable connector before connecting the cable to
the interface module.
Step 8
Insert the connector plug into the bulkhead gently but firmly until the plug fully engages.
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19
Optical Link Loss Budgets and Attenuation
Optical Link Loss Budgets and Attenuation
The optical link loss budget defines the maximum allowable optical losses between any transmitter and
receiver pair in your system. The goal in calculating the optical link loss is to ensure that the total loss
does not exceed the overall link (or span) budget.
The link loss budget is determined by the transmitter optical output power and the required receiver
optical input power. Transmitter output power is fixed for most network uplink modules or there may be
a limited range of output powers that are typical for a specific module. Receivers have a range of
acceptable input powers—known as maximum input to minimum input thresholds.
To calculate the link loss budget, you need to take into consideration the following:
•
transmitter output power
•
acceptable receiver input power
•
fiber-optic cable length
•
all connectors, splices, jumpers, and pigtails
•
couplers and optical splitters
•
extra margin for maintenance and repair that might occur in the future
The optical link loss budget is calculated by summing the losses introduced by each component in the
signal path and subtracting the figure from the transmit output.
Example:
+ 6 dBm transmit signal
3 dB connector loss
4 dB cable loss
2 dB extra margin
___________________
– 3 dBm optical input power to the receiver
If the optical input power exceeds that which is acceptable for the receiver then an attenuator may be
added to the cable or receiver port to bring the power level to the desired specification.
Tip
Caution
Cisco recommends the use of a Standard Connector/Physical Contact (SC/PC) female to SC/PC male
optical attenuator. The SC/PC connector has a flat or slightly convex endface. SC/APC (Standard
Connector Angled Physical Contact) has an angled endface.
Make sure that you obtain the correct connector type (SC/PC) when purchasing optical attenuators.
Standard Connector/Angled Physical Contact (SC/APC) type mating surfaces can damage the
Cisco uBR10012 OC48 DPT/POS interface module RX and TX port optical interfaces.
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Troubleshooting
Configuring the Cisco uBR10012 OC-48 DPT/POS Interface Module
For configuration information, refer to the Cisco uBR10012 Universal Broadband Software
Configuration Guide and related Cisco IOS release notes. See the “Related Documentation” section on
page 21.
It is not necessary to configure the line module if you are installing a replacement module in the same
slot. The system automatically downloads the necessary configuration information.
Troubleshooting
1.
Verify that there is power to the system, see Table 1 on page 3 LED Status and Description.
2.
Check the connector at the back of the interface module and the backplane in the chassis for debris
or damage (bent or broken connector pins).
3.
Verify that the module is properly seated in the backplane and the ejector levers and captive screws
are secure.
4.
Verify the TX and the RX power levels.
5.
Verify that the optical connectors are clean. For information on cleaning procedures for fiber-optic
connectors, go to the following URL:
http://www.cisco.com/en/US/tech/tk482/tk876/technologies_white_paper09186a0080254eba.shtm
l
6.
Verify that the module is configured properly. Refer to the Cisco IOS release notes for more
information.
7.
If all else fails, see the “Obtaining Technical Assistance” section on page 23.
Related Documentation
For more information, see the following:
•
Cisco uBR10012 Universal Broadband Router Hardware Installation Guide
http://www.cisco.com/en/US/docs/cable/cmts/ubr10012/installation/guide/hig.html
•
Performance Routing Engine Module for the Cisco uBR10012 Universal Broadband Router
http://www.cisco.com/en/US/docs/interfaces_modules/cable/performance_routing_engine/installat
ion/guide/pre5096.html
•
Cleaning Procedures for Fiber Optic Connections
http://www.cisco.com/en/US/tech/tk482/tk876/technologies_white_paper09186a0080254eba.shtm
l
•
Cisco uBR10012 Universal Broadband Router Software Configuration Guide
http://www.cisco.com/en/US/docs/cable/cmts/ubr10012/configuration/guide/scg.html
•
Cisco uBR10012 Router Software Features
http://www.cisco.com/en/US/products/hw/cable/ps2209/products_feature_guides_list.html
•
Cisco uBR10000 Series Universal Broadband Router Release Notes
http://www.cisco.com/en/US/products/hw/cable/ps2209/prod_release_notes_list.html
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Obtaining Documentation
•
Cisco CMTS Feature Guide
http://www.cisco.com/en/US/docs/cable/cmts/feature/guide/cmtsfg.html
•
For information about the 1 year warranty, enter 78-10747-01C0 at the following URL:
http://www.cisco.com/en/US/products/prod_warranties_listing.html
•
For more Cisco cable products information, go to the following URL:
http://www.cisco.com/en/US/products/
Note
Also refer to the documentation road map for directions to related documentation sites.
Obtaining Documentation
Cisco documentation and additional literature are available on Cisco.com. Cisco also provides several
ways to obtain technical assistance and other technical resources. These sections explain how to obtain
technical information from Cisco Systems.
Cisco.com
You can access the most current Cisco documentation at this URL:
http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html
You can access the Cisco website at this URL:
http://www.cisco.com
You can access international Cisco websites at this URL:
http://www.cisco.com/web/siteassets/locator/index.html
Ordering Documentation
You can find instructions for ordering documentation at this URL:
http://www.cisco.com/en/US/docs/general/Illus_process/PDI/pdi.htm
You can order Cisco documentation in these ways:
•
Registered Cisco.com users (Cisco direct customers) can order Cisco product documentation from
the Ordering tool:
http://www.cisco.com/web/ordering/root/index.html
•
Nonregistered Cisco.com users can order documentation through a local account representative by
calling Cisco Systems Corporate Headquarters (California, USA) at 408 526-7208 or, elsewhere in
North America, by calling 800 553-NETS (6387).
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Documentation Feedback
Documentation Feedback
You can send comments about technical documentation to [email protected].
You can submit comments by using the response card (if present) behind the front cover of your
document or by writing to the following address:
Cisco Systems
Attn: Customer Document Ordering
170 West Tasman Drive
San Jose, CA 95134-9883
We appreciate your comments.
Obtaining Technical Assistance
For all customers, partners, resellers, and distributors who hold valid Cisco service contracts, Cisco
Technical Support provides 24-hour-a-day, award-winning technical assistance. The Cisco Technical
Support Website on Cisco.com features extensive online support resources. In addition, Cisco Technical
Assistance Center (TAC) engineers provide telephone support. If you do not hold a valid Cisco service
contract, contact your reseller.
Cisco Technical Support Website
The Cisco Technical Support Website provides online documents and tools for troubleshooting and
resolving technical issues with Cisco products and technologies. The website is available 24 hours a day,
365 days a year at this URL:
http://www.cisco.com/cisco/web/support/index.html
Access to all tools on the Cisco Technical Support Website requires a Cisco.com user ID and password.
If you have a valid service contract but do not have a user ID or password, you can register at this URL:
http://tools.cisco.com/RPF/register/register.do
Submitting a Service Request
Using the online TAC Service Request Tool is the fastest way to open S3 and S4 service requests. (S3
and S4 service requests are those in which your network is minimally impaired or for which you require
product information.) After you describe your situation, the TAC Service Request Tool automatically
provides recommended solutions. If your issue is not resolved using the recommended resources, your
service request will be assigned to a Cisco TAC engineer. The TAC Service Request Tool is located at
this URL:
http://tools.cisco.com/ServiceRequestTool/create/launch.do
For S1 or S2 service requests or if you do not have Internet access, contact the Cisco TAC by telephone.
(S1 or S2 service requests are those in which your production network is down or severely degraded.)
Cisco TAC engineers are assigned immediately to S1 and S2 service requests to help keep your business
operations running smoothly.
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Obtaining Additional Publications and Information
To open a service request by telephone, use one of the following numbers:
Asia-Pacific: +61 2 8446 7411 (Australia: 1 800 805 227)
EMEA: +32 2 704 55 55
USA: 1 800 553 2447
For a complete list of Cisco TAC contacts, go to this URL:
http://www.cisco.com/en/US/support/tsd_contact_technical_support.html
Definitions of Service Request Severity
To ensure that all service requests are reported in a standard format, Cisco has established severity
definitions.
Severity 1 (S1)—Your network is “down,” or there is a critical impact to your business operations. You
and Cisco will commit all necessary resources around the clock to resolve the situation.
Severity 2 (S2)—Operation of an existing network is severely degraded, or significant aspects of your
business operation are negatively affected by inadequate performance of Cisco products. You and Cisco
will commit full-time resources during normal business hours to resolve the situation.
Severity 3 (S3)—Operational performance of your network is impaired, but most business operations
remain functional. You and Cisco will commit resources during normal business hours to restore service
to satisfactory levels.
Severity 4 (S4)—You require information or assistance with Cisco product capabilities, installation, or
configuration. There is little or no effect on your business operations.
Obtaining Additional Publications and Information
Information about Cisco products, technologies, and network solutions is available from various online
and printed sources.
•
Cisco Marketplace provides a variety of Cisco books, reference guides, and logo merchandise. Visit
Cisco Marketplace, the company store, at this URL:
http://www.cisco.com/go/marketplace/
•
The Cisco Product Catalog describes the networking products offered by Cisco Systems, as well as
ordering and customer support services. Access the Cisco Product Catalog at this URL:
http://www.cisco.com/en/US/products/index.html
•
Cisco Press publishes a wide range of general networking, training and certification titles. Both new
and experienced users will benefit from these publications. For current Cisco Press titles and other
information, go to Cisco Press at this URL:
http://www.ciscopress.com
•
Packet magazine is the Cisco Systems technical user magazine for maximizing Internet and
networking investments. Each quarter, Packet delivers coverage of the latest industry trends,
technology breakthroughs, and Cisco products and solutions, as well as network deployment and
troubleshooting tips, configuration examples, customer case studies, certification and training
information, and links to scores of in-depth online resources. You can access Packet magazine at this
URL:
http://www.cisco.com/web/about/ac123/ac114/about_cisco_packet_magazine.html
Cisco uBR10012 OC-48 DPT/POS Interface Module
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Obtaining Additional Publications and Information
•
Internet Protocol Journal is a quarterly journal published by Cisco Systems for engineering
professionals involved in designing, developing, and operating public and private internet and
intranets. You can access the Internet Protocol Journal at this URL:
http://www.cisco.com/web/about/ac123/ac147/about_cisco_the_internet_protocol_journal.html
•
World-class networking training is available from Cisco. You can view current offerings at
this URL:
http://www.cisco.com/web/learning/index.html
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25
Obtaining Additional Publications and Information
This document is to be used in conjunction with the documents listed in the “Related Documentation” section.
CCVP, the Cisco logo, and Welcome to the Human Network are trademarks of Cisco Systems, Inc.; Changing the Way We Work, Live, Play, and Learn is
a service mark of Cisco Systems, Inc.; and Access Registrar, Aironet, Catalyst, CCDA, CCDP, CCIE, CCIP, CCNA, CCNP, CCSP, Cisco, the Cisco
Certified Internetwork Expert logo, Cisco IOS, Cisco Press, Cisco Systems, Cisco Systems Capital, the Cisco Systems logo, Cisco Unity,
Enterprise/Solver, EtherChannel, EtherFast, EtherSwitch, Fast Step, Follow Me Browsing, FormShare, GigaDrive, HomeLink, Internet Quotient, IOS,
iPhone, IP/TV, iQ Expertise, the iQ logo, iQ Net Readiness Scorecard, iQuick Study, LightStream, Linksys, MeetingPlace, MGX, Networkers,
Networking Academy, Network Registrar, PIX, ProConnect, ScriptShare, SMARTnet, StackWise, The Fastest Way to Increase Your Internet Quotient,
and TransPath are registered trademarks of Cisco Systems, Inc. and/or its affiliates in the United States and certain other countries.
All other trademarks mentioned in this document or Website are the property of their respective owners. The use of the word partner does not imply a
partnership relationship between Cisco and any other company. (0711R)
Copyright © 2004, Cisco Systems, Inc.
All rights reserved.
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