4000 Router Series MPLS Configuration Guide

[RouterB-Serial2/0] mpls enable

[RouterB-Serial2/0] mpls ldp enable

[RouterB-Serial2/0] quit

[RouterB] interface serial 2/1

[RouterB-Serial2/1] mpls enable

[RouterB-Serial2/1] mpls ldp enable

[RouterB-Serial2/1] quit

# Configure Router C.

[RouterC] mpls lsr-id 3.3.3.9

[RouterC] mpls ldp

[RouterC-ldp] quit

[RouterC] interface serial 2/0

[RouterC-Serial2/0] mpls enable

[RouterC-Serial2/0] mpls ldp enable

[RouterC-Serial2/0] quit

4. Configure LSP generation policies:

# On Router A, create IP prefix list routera, and configure LDP to use only the routes permitted by

the prefix list to establish LSPs.

[RouterA] ip prefix-list routera index 10 permit 1.1.1.9 32

[RouterA] ip prefix-list routera index 20 permit 2.2.2.9 32

[RouterA] ip prefix-list routera index 30 permit 3.3.3.9 32

[RouterA] ip prefix-list routera index 40 permit 11.1.1.0 24

[RouterA] ip prefix-list routera index 50 permit 21.1.1.0 24

[RouterA] mpls ldp

[RouterA-ldp] lsp-trigger prefix-list routera

[RouterA-ldp] quit

# On Router B, create IP prefix list routerb, and configure LDP to use only the routes permitted by

the prefix list to establish LSPs.

[RouterB] ip prefix-list routerb index 10 permit 1.1.1.9 32

[RouterB] ip prefix-list routerb index 20 permit 2.2.2.9 32

[RouterB] ip prefix-list routerb index 30 permit 3.3.3.9 32

[RouterB] ip prefix-list routerb index 40 permit 11.1.1.0 24

[RouterB] ip prefix-list routerb index 50 permit 21.1.1.0 24

[RouterB] mpls ldp

[RouterB-ldp] lsp-trigger prefix-list routerb

[RouterB-ldp] quit

# On Router C, create IP prefix list routerc, and configure LDP to use only the routes permitted by

the prefix list to establish LSPs.

[RouterC] ip prefix-list routerc index 10 permit 1.1.1.9 32

[RouterC] ip prefix-list routerc index 20 permit 2.2.2.9 32

[RouterC] ip prefix-list routerc index 30 permit 3.3.3.9 32

[RouterC] ip prefix-list routerc index 40 permit 11.1.1.0 24

[RouterC] ip prefix-list routerc index 50 permit 21.1.1.0 24

[RouterC] mpls ldp

[RouterC-ldp] lsp-trigger prefix-list routerc

[RouterC-ldp] quit