H3C Technologies H3C S12500-X Series Switches - Manual (Page 44)

33
[SwitchA] ip prefix-list switcha index 50 permit 21.1.1.0 24
[SwitchA] mpls ldp
[SwitchA-ldp] lsp-trigger prefix-list switcha
[SwitchA-ldp] quit
# On Switch B, create IP prefix list switchb, and configure LDP to use only the routes permitted by
the prefix list to establish LSPs.
[SwitchB] ip prefix-list switchb index 10 permit 1.1.1.9 32
[SwitchB] ip prefix-list switchb index 20 permit 2.2.2.9 32
[SwitchB] ip prefix-list switchb index 30 permit 3.3.3.9 32
[SwitchB] ip prefix-list switchb index 40 permit 11.1.1.0 24
[SwitchB] ip prefix-list switchb index 50 permit 21.1.1.0 24
[SwitchB] mpls ldp
[SwitchB-ldp] lsp-trigger prefix-list switchb
[SwitchB-ldp] quit
# On Switch C, create IP prefix list switchc, and configure LDP to use only the routes permitted by
the prefix list to establish LSPs.
[SwitchC] ip prefix-list switchc index 10 permit 1.1.1.9 32
[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
Verifying 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
# On Switch A, test the connectivity of the LDP LSP from Switch A to Switch C.
[SwitchA] ping mpls -a 11.1.1.1 ipv4 21.1.1.0 24
MPLS Ping FEC: 21.1.1.0/24 : 100 data bytes
100 bytes from 20.1.1.2: Sequence=1 time=1 ms