Troubleshooting Ipv6 Pim; A Multicast Distribution Tree Cannot Be Correctly Built - HP 6125XLG Ip Multicast Configuration Manual

[SwitchA] display ipv6 pim routing-table
Total 0 (*, G) entry; 1 (S, G) entry
(4001::100, FF3E::101)
Protocol: pim-ssm, Flag:
UpTime: 00:00:11
Upstream interface: Vlan-interface101
Upstream neighbor: 1002::2
RPF prime neighbor: 1002::2
Downstream interface(s) information:
Total number of downstreams: 1
1: Vlan-interface100
# Display IPv6 PIM multicast routing table information on Switch B.
[SwitchD] 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: Vlan-interface300
Upstream neighbor: NULL
RPF prime neighbor: NULL
Downstream interface(s) information:
Total number of downstreams: 1
1: Vlan-interface105

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. An IPv6 multicast distribution tree cannot be
correctly built.
Analysis
On an IPv6 PIM-DM network, IPv6 multicast data is flooded from the router that directly connects to
•
the IPv6 multicast source to the routers that directly connects to the receivers. When the IPv6
multicast data is flooded to a router, the router creates an (S, G) entry only if it has a route to the IPv6
multicast source. A router cannot create an (S, G) entry due to one of the following reasons:
The router does not have a route to the IPv6 multicast source.
IPv6 PIM-DM is not enabled on the RPF interface toward the IPv6 multicast source.
On an IPv6 PIM-SM network, when a router wants to join the SPT, the router creates an (S, G) entry.
•
A router cannot create an (S, G) entry because of one of the following reasons:
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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