H3C Technologies H3C S6800 Series Switches - Manual (Page 60)

47
# On Switch D, create IP prefix list switchd, and configure LDP to use only the routes permitted by
the prefix list to establish LSPs.
[SwitchD] ip prefix-list switchd index 10 permit 11.1.1.0 24
[SwitchD] ip prefix-list switchd index 20 permit 21.1.1.0 24
[SwitchD] mpls ldp
[SwitchD-ldp] lsp-trigger prefix-list switchd
[SwitchD-ldp] quit
5. Configure label advertisement policies:
# On Switch A, create an IP prefix list prefix-to-b that permits subnet 11.1.1.0/24. Switch A uses
this list to filter FEC-label mappings advertised to Switch B.
[SwitchA] ip prefix-list prefix-to-b index 10 permit 11.1.1.0 24
# On Switch A, create an IP prefix list peer-b that permits 2.2.2.9/32. Switch A uses this list to
filter peers.
[SwitchA] ip prefix-list peer-b index 10 permit 2.2.2.9 32
# On Switch A, configure a label advertisement policy to advertise only the label mapping for FEC
11.1.1.0/24 to Switch B.
[SwitchA] mpls ldp
[SwitchA-ldp] advertise-label prefix-list prefix-to-b peer peer-b
[SwitchA-ldp] quit
# On Switch C, create an IP prefix list prefix-to-b that permits subnet 21.1.1.0/24. Switch C uses
this list to filter FEC-label mappings advertised to Switch B.
[SwitchC] ip prefix-list prefix-to-b index 10 permit 21.1.1.0 24
# On Switch C, create an IP prefix list peer-b that permits 2.2.2.9/32. Switch C uses this list to
filter peers.
[SwitchC] ip prefix-list peer-b index 10 permit 2.2.2.9 32
# On Switch C, configure a label advertisement policy to advertise only the label mapping for FEC
21.1.1.0/24 to Switch B.
[SwitchC] mpls ldp
[SwitchC-ldp] advertise-label prefix-list prefix-to-b peer peer-b
[SwitchC-ldp] quit
# On Switch D, create an IP prefix list prefix-to-a that denies subnet 21.1.1.0/24. Switch D uses
this list to filter FEC-label mappings to be advertised to Switch A.
[SwitchD] ip prefix-list prefix-to-a index 10 deny 21.1.1.0 24
[SwitchD] ip prefix-list prefix-to-a index 20 permit 0.0.0.0 0 less-equal 32
# On Switch D, create an IP prefix list peer-a that permits 1.1.1.9/32. Switch D uses this list to
filter peers.
[SwitchD] ip prefix-list peer-a index 10 permit 1.1.1.9 32
# On Switch D, create an IP prefix list prefix-to-c that denies subnet 11.1.1.0/24. Switch D uses
this list to filter FEC-label mappings to be advertised to Switch C.
[SwitchD] ip prefix-list prefix-to-c index 10 deny 11.1.1.0 24
[SwitchD] ip prefix-list prefix-to-c index 20 permit 0.0.0.0 0 less-equal 32
# On Switch D, create an IP prefix list peer-c that permits subnet 3.3.3.9/32. Switch D uses this
list to filter peers.
[SwitchD] ip prefix-list peer-c index 10 permit 3.3.3.9 32