4000 Router Series MPLS Configuration Guide

[RouterC] ospf

[RouterC-ospf-1] area 0

[RouterC-ospf-1-area-0.0.0.0] network 3.3.3.9 0.0.0.0

[RouterC-ospf-1-area-0.0.0.0] network 20.1.1.0 0.0.0.255

[RouterC-ospf-1-area-0.0.0.0] network 21.1.1.0 0.0.0.255

[RouterC-ospf-1-area-0.0.0.0] quit

[RouterC-ospf-1] quit

# Verify that the routers have learned the routes to each other. For example, on Router A:

[RouterA] display ip routing-table

Destinations : 21 Routes : 21

Destination/Mask Proto Pre Cost NextHop Interface

0.0.0.0/32 Direct 0 0 127.0.0.1 InLoop0

1.1.1.9/32 Direct 0 0 127.0.0.1 InLoop0

2.2.2.9/32 OSPF 10 1 10.1.1.2 S2/0

3.3.3.9/32 OSPF 10 2 10.1.1.2 S2/0

10.1.1.0/24 Direct 0 0 10.1.1.1 S2/0

10.1.1.0/32 Direct 0 0 10.1.1.1 S2/0

10.1.1.1/32 Direct 0 0 127.0.0.1 InLoop0

10.1.1.255/32 Direct 0 0 10.1.1.1 S2/0

11.1.1.0/24 Direct 0 0 11.1.1.1 Eth1/1

11.1.1.0/32 Direct 0 0 11.1.1.1 Eth1/1

11.1.1.1/32 Direct 0 0 127.0.0.1 InLoop0

11.1.1.255/32 Direct 0 0 11.1.1.1 Eth1/1

20.1.1.0/24 OSPF 10 2 10.1.1.2 S2/0

21.1.1.0/24 OSPF 10 3 10.1.1.2 S2/0

127.0.0.0/8 Direct 0 0 127.0.0.1 InLoop0

127.0.0.0/32 Direct 0 0 127.0.0.1 InLoop0

127.0.0.1/32 Direct 0 0 127.0.0.1 InLoop0

127.255.255.255/32 Direct 0 0 127.0.0.1 InLoop0

224.0.0.0/4 Direct 0 0 0.0.0.0 NULL0

224.0.0.0/24 Direct 0 0 0.0.0.0 NULL0

255.255.255.255/32 Direct 0 0 127.0.0.1 InLoop0

3. Enable MPLS and LDP:

# Configure Router A.

[RouterA] mpls lsr-id 1.1.1.9

[RouterA] mpls ldp

[RouterA-ldp] quit

[RouterA] interface serial 2/0

[RouterA-Serial2/0] mpls enable

[RouterA-Serial2/0] mpls ldp enable

[RouterA-Serial2/0] quit

# Configure Router B.

[RouterB] mpls lsr-id 2.2.2.9

[RouterB] mpls ldp

[RouterB-ldp] quit

[RouterB] interface serial 2/0