Troubleshooting Ipv6 Pim; A Multicast Distribution Tree Cannot Be Correctly Built - HP MSR1002-4 Configuration Manual

(4001::100, FF3E::101)
Protocol: pim-ssm, Flag:
UpTime: 00:00:11
Upstream interface: GigabitEthernet1/0/2
Upstream neighbor: 1002::2
RPF prime neighbor: 1002::2
Downstream interface(s) information:
Total number of downstreams: 1
1: GigabitEthernet1/0/1
# Display IPv6 PIM multicast routing table information on Router D.
[RouterD] display ipv6 pim routing-table
Total 0 (*, G) entry; 1 (S, G) entry
(4001::100, FF3E::101)
Protocol: pim-ssm, Flag: LOC
UpTime: 00:08:02
Upstream interface: GigabitEthernet1/0/1
Upstream neighbor: NULL
RPF prime neighbor: NULL
Downstream interface(s) information:
Total number of downstreams: 1
1: GigabitEthernet1/0/2
The output shows that routers on the SPT path (Router A and Router D) have generated the correct
(S, G) entries.

Troubleshooting IPv6 PIM

A multicast distribution tree cannot be correctly built

Symptom
No IPv6 multicast forwarding entries are established on the routers (including routers directly
connected with multicast sources or receivers) in an IPv6 PIM network. This means that an IPv6
multicast distribution tree cannot be correctly built.
Solution
To resolve the problem:
1. Use display ipv6 routing-table to verify that an IPv6 unicast route to the IPv6 multicast source
or the RP is available.
2. Use display ipv6 pim interface to verify IPv6 PIM information on each interface, especially on
the RPF interface. If IPv6 PIM is not enabled on the interfaces, use ipv6 pim dm or ipv6 pim
sm to enable IPv6 PIM-DM or IPv6 PIM-SM for the interfaces.
3. Use display ipv6 pim neighbor to verify that the RPF neighbor is an IPv6 PIM neighbor.
4. Verify that IPv6 PIM and MLD are enabled on the interfaces that directly connect to the IPv6
multicast sources or the receivers.
Protocol: mld, UpTime: 00:00:11, Expires: 00:03:25
Protocol: pim-ssm, UpTime: 00:08:02, Expires: 00:03:25
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