R21xx-HP FlexFabric 11900 MPLS Configuration Guide

[SwitchC] ip prefix-list switchc index 20 permit 2.2.2.9 32

[SwitchC] ip prefix-list switchc index 30 permit 3.3.3.9 32

[SwitchC] ip prefix-list switchc index 40 permit 11.1.1.0 24

[SwitchC] ip prefix-list switchc index 50 permit 21.1.1.0 24

[SwitchC] mpls ldp

[SwitchC-ldp] lsp-trigger prefix-list switchc

[SwitchC-ldp] quit

5. Verify the configuration:

# Execute the display mpls ldp lsp command on each switch to view the LDP LSP information. For

example, on Switch A:

[SwitchA] display mpls ldp lsp

Status Flags: * - stale, L - liberal

Statistics:

FECs: 5 Ingress LSPs: 3 Transit LSPs: 3 Egress LSPs: 2

FEC In/Out Label Nexthop OutInterface

1.1.1.9/32 3/-

-/1279(L)

2.2.2.9/32 -/3 10.1.1.2 Vlan-int2

1279/3 10.1.1.2 Vlan-int2

3.3.3.9/32 -/1278 10.1.1.2 Vlan-int2

1278/1278 10.1.1.2 Vlan-int2

11.1.1.0/24 1277/-

-/1277(L)

21.1.1.0/24 -/1276 10.1.1.2 Vlan-int2

1276/1276 10.1.1.2 Vlan-int2

Label acceptance control configuration example

Network requirements

Two links, Switch A—Switch B—Switch C and Switch A—Switch D—Switch C, exist between subnets

11.1.1.0 / 24 a n d 21.1.1. 0 / 24 .

Configure label acceptance control, so LDP sets up LSPs only on the link Switch A—Switch B—Switch C

to forward traffic between subnets 11.1.1.0 / 24 a n d 21.1.1.0 / 24 .