45
# 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 11.1.1.0 24
[SwitchB] ip prefix-list switchb index 20 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 11.1.1.0 24
[SwitchC] ip prefix-list switchc index 20 permit 21.1.1.0 24
[SwitchC] mpls ldp
[SwitchC-ldp] lsp-trigger prefix-list switchc
[SwitchC-ldp] quit
# 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 IP prefix list prefix-to-b to permit 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 IP prefix list peer-b to permit 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 IP prefix list prefix-to-b to permit 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 IP prefix list peer-b to permit 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 IP prefix list prefix-to-a to deny 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
To Next Page
Loading...
Need help?
General