Matakuliah
Tahun
Versi
: H0372/Manajemen Jaringan
: 2005
: 1/0
Pertemuan 02
Komponen Jaringan
1
Learning Outcomes
Pada akhir pertemuan ini, diharapkan mahasiswa
akan mampu :
• Menjelaskan komponen dan teknologi dari jaringan
2
Outline Materi
• LAN dan komponennya
• WAN dan komponennya
3
Computer Network Technology
• Network comprises
• Nodes
• Links
• Topology: How they’re configured
• LAN
• WAN
4
LAN
•Type of LANs
• Ethernet
• Fast Ethernet
• Gigabit Ethernet
• Half-duplex vs Full-duplex
• Switched Ethernet
• VLAN
• Token ring
5
WAN
• Facilities / Media
• Wired: Copper, Coaxial, Fiber
• Wireless: Terrestrial, Satellite
• Mode: Digital, Analog
• Services: POTS, Broadband
6
Nodes
• Hubs
• Bridges/Remote bridges
• Routers
• Gateways
• Switches
7
Network Node Components
Dial-up
Network
Router
Switched
Hub
External
Network
Gateway
ATM
Switch
Hub
Bridge
External
Network
Remote
Bridge
Workstation
Hub
Router
Hub
• Hub
• Bridge, Remote bridge
• Router, Gateway
• Switch
8
Star & Hybrid LAN Topologies
DTE
DTE
DTE
DTE
DTE
DTE
DTE
DTE
DTE
DTE
DTE
DTE
DTE
DTE
Ethernet Hub
Token Ring Hub
• Star topology used with bus and ring topology
• Hub is “LAN in a box”
• What does the electronic LAN inside the box
look like?
• Why has hub become so popular?
9
WAN Topologies
N1
N2
N2
N1
N3
N4
Mesh Topology
N5
N3
N6
N4
N5
N6
Tree Topology
• Mesh topology
• Implemented in network layer level
• Multiple paths between nodes
• Flat topology, Redundancy, Load balancing, Shortest path
• Tree topology
• Used with Ethernet bridges
• Hierarchical
• Efficient for small networks and, special purpose networks
10
Transmission Technology
Transmission Technology
Medium
Wired
LAN
Mode
Wireless
Digital
Analog
WAN
LAN Mobile Satellite
• Physical transport media
• UTP
• Coax
• Fiber
• Terrestrial wireless
• Satellite transmission
11
LAN Data Rate
Ethernet
10Mbps
FDDI
100 Mbps
Fast Ethernet
100Mbps
Gigabit E’Net
1 Gbps
ATM
155.52 Mbps
ATM
STM-n
12
Hubs
DTE
DTE
DTE
DTE
Patch Panel
Hub
Wiring Closet
• Hub is a platform
• Function dependent on what is housed
• LAN (Bus/Ethernet)
• Switched LAN (Ethernet)
• Bridge
13
Switched Ethernet
DTE
DTE
DTE
DTE
Switched
hub
DTE
DTE
DTE
DTE
• Maximum throughput increased ~N/2 in N-port hub
• Snooping capability lost for management
14
Client/Server - Switched Hub
Server
100 Mbps
Switched hub
10 Mbps
Workstation
10 Mbps
Workstation
10 Mbps
Workstation
15
Router
Network A
Protocol P
Network B
Protocol P
Router
Protocol interface
TP
TP
NP
NP
NP
NP
DP
DP
DP'
DP'
Phy
Phy
Phy'
Phy'
Physical medium A
Physical medium B
• Routes packets between nodes of similar network protocols
• Routing table used to route packets
• DLC and Physical layers could be different under the same
common network layer protocol
16
Gateway
Network A
Protocol P
Network B
Protocol Q
Gateway
Protocol interface
TP
TP
NP
NP
NP'
NP'
DP
Phy
DP
DP'
DP'
Phy
Phy'
Phy'
Physical medium
• Gateway is router connecting two networks with dissimilar
network protocols
• Gateway does the protocol conversion at the network layer
• Protocol converter does the conversion at the application layer 17
Switched Networks
Pkt1
Pkt2
Pkt3 Pkt2 Pkt1
DTE A
Pkt3
B
A
Pkt3 Pkt2 Pkt1
D
DTE Z
C
Virtual Circuit Configuration
• Switches are embedded in bridges and routers
• Switched network used in WAN
• Two types of switched networks
• Circuit-switched
• Packet-switched
• Datagram service
• Virtual circuit
18
Broadband Services
Residential
Customer
Network
Service
Providers
Campus
ATM / LAN
Network
Broadband
Access
Gateway
STM-n
Broadband
Access
Residential
Customer
Network
SDH WAN
STM-n
Campus
ATM / LAN
Network
19