HPE FlexFabric 5950 Series

59
[SwitchC] ipv6 prefix-list prefix-from-d index 10 deny 11::0 64
# On Switch C, configure IPv6 label acceptance policies to filter FEC-label mappings received
from Switch B and Switch D.
[SwitchC] mpls ldp
[SwitchC-ldp] ipv6 accept-label peer 2.2.2.9 prefix-list prefix-from-b
[SwitchC-ldp] ipv6 accept-label peer 4.4.4.9 prefix-list prefix-from-d
[SwitchC-ldp] quit
362BVerifying the configuration
# Display IPv6 LDP LSP information on the switches, for example, on Switch A.
[SwitchA] display mpls ldp lsp ipv6
Status Flags: * - stale, L - liberal, B - backup
FECs: 2 Ingress: 1 Transit 1 Egress: 1
FEC: 11::/64
In/Out Label: 2417/- OutInterface : -
Nexthop : -
FEC: 21::/64
In/Out Label: -/2416 OutInterface : Vlan2
Nexthop : FE80::20C:29FF:FE9D:EAC0
In/Out Label: 2415/2416 OutInterface : Vlan2
Nexthop : FE80::20C:29FF:FE9D:EAC0
The output shows that the next hop of the IPv6 LSP for FEC 21::0/64 is Switch B
(FE80::20C:29FF:FE9D:EAC0). The IPv6 LSP has been established over the link Switch A—Switch
B—Switch C, not over the link Switch A—Switch D—Switch C.
# Test the connectivity of the IPv6 LDP LSP from Switch A to Switch C.
[SwitchA] ping ipv6 -a 11::1 21::1
Ping6(56 data bytes) 11::1 --> 21::1, press CTRL_C to break
56 bytes from 21::1, icmp_seq=0 hlim=63 time=4.000 ms
56 bytes from 21::1, icmp_seq=1 hlim=63 time=3.000 ms
56 bytes from 21::1, icmp_seq=2 hlim=63 time=3.000 ms
56 bytes from 21::1, icmp_seq=3 hlim=63 time=2.000 ms
56 bytes from 21::1, icmp_seq=4 hlim=63 time=1.000 ms
--- Ping6 statistics for 21::1 ---
5 packets transmitted, 5 packets received, 0.0% packet loss
round-trip min/avg/max/std-dev = 1.000/2.600/4.000/1.020 ms
# Test the connectivity of the IPv6 LDP LSP from Switch C to Switch A.
[SwitchC] ping ipv6 -a 21::1 11::1
Ping6(56 data bytes) 21::1 --> 11::1, press CTRL_C to break
56 bytes from 11::1, icmp_seq=0 hlim=63 time=1.000 ms
56 bytes from 11::1, icmp_seq=1 hlim=63 time=2.000 ms
56 bytes from 11::1, icmp_seq=2 hlim=63 time=1.000 ms
56 bytes from 11::1, icmp_seq=3 hlim=63 time=2.000 ms
56 bytes from 11::1, icmp_seq=4 hlim=63 time=1.000 ms
--- Ping6 statistics for 11::1 ---
5 packets transmitted, 5 packets received, 0.0% packet loss