Connecting Routers Through Pos Interfaces Across Frame Relay - 3Com MSR 50 Series Configuration Manual

86 C 2: POS I
HAPTER NTERFACE
Connecting Routers
Through POS Interfaces
Across Frame Relay
C
ONFIGURATION
Network requirements
Connect routers to a public Frame Relay network through POS interfaces. The
routers are premise equipment that work as DTE side of Frame Relay.
Router A uses Frame Relay sub-interfaces to connect Router B and Router C in
different network segments.
Network diagram
Figure 4 Network diagram for POS interface connection across Frame Relay
Router A
POS 1/0.1
10.10.10.1/24
DLCI=50
POS 1/0.2
20 .10 .10 .1/24
DLCI=60
Configuration procedure
1 Configure Router A
# Configure POS interface 1/0.
<RouterA> system-view
[RouterA] interface pos 1/0
[RouterA-Pos1/0] clock slave
# Configure Frame Relay encapsulation on the interface.
[RouterA-Pos1/0] link-protocol fr
[RouterA-Pos1/0] fr interface-type dte
[RouterA-Pos1/0] quit
# Create sub-interface 1 on the interface.
[RouterA] interface pos 1/0.1
[RouterA-Pos1/0.1] ip address 10.10.10.1 255.255.255.0
[RouterA-Pos1/0.1] fr map ip 10.10.10.2 50
[RouterA-Pos1/0.1] mtu 1500
[RouterA-Pos1/0.1] quit
# Create sub-interface 2 on the interface.
[RouterA] interface pos 1/0.2
[RouterA-Pos1/0.2] ip address 20.10.10.1 255.255.255.0
[RouterA-Pos1/0.2] fr map ip 20.10.10.2 60
[RouterA-Pos1/0.2] mtu 1500
[RouterA-Pos1/0.2] quit
2 Configure Router B
10 .10 .10 .2/24
FR
20 .10.10.2/24
Router B
POS1 /0
DLCI=70
Router C
POS1/0
DLCI=80