432
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
Protocol: pim-ssm, UpTime: 00:08:02, Expires: 00:03:25
The output shows that switches on the SPT path (Switch A and Switch 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.
5.
Use
display ipv6 pim interface verbose
to verify that the same IPv6 PIM mode is enabled on
the RPF interface on a router and the connected interface of the router's RPF neighbor.
6.
Use
display current-configuration
to verify that the same IPv6 PIM mode is enabled on all
routers on the network. For IPv6 PIM-SM, verify that the BSR and C-RPs are correctly
configured.
7.
If the problem persists, contact Hewlett Packard Enterprise Support.
IPv6 multicast data is abnormally terminated on an
intermediate router
Symptom
An intermediate router can receive IPv6 multicast data successfully, but the data cannot reach the
last-hop router. An interface on the intermediate router receives IPv6 multicast data but does not
create an (S, G) entry in the IPv6 PIM routing table.