HP 6125XLG - Static Multicast Route Failure; Troubleshooting Multicast Routing and Forwarding

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Upstream neighbor: NULL
RPF prime neighbor: NULL
Downstream interface(s) information:
Total number of downstreams: 1
1: Vlan-interface200
Protocol: igmp, UpTime: 00:04:25, Expires: -
(10.1.1.100, 225.1.1.1)
Protocol: pim-dm, Flag: ACT
UpTime: 00:06:14
Upstream interface: Tunnel0
Upstream neighbor: 50.1.1.1
RPF prime neighbor: 50.1.1.1
Downstream interface(s) information:
Total number of downstreams: 1
1: Vlan-interface200
Protocol: pim-dm, UpTime: 00:04:25, Expires: -
The output shows that Switch A is the RPF neighbor of Switch C and the multicast data from Switch A is
delivered over a GRE tunnel to Switch C.
Troubleshooting multicast routing and forwarding
Static multicast route failure
Symptom
No dynamic routing protocol is enabled on the routers, and the physical status and link layer status of
interfaces are both up, but the static multicast route fails.
Analysis
• If a static multicast route is not correctly configured or updated to match the current network
conditions, it does not exist in the static multicast routing table.
• If a better route is found, the static multicast route might also fail.
Solution
1. Use the display multicast routing-table static command to verify that the static multicast route has
been correctly configured and the route entry exists in the static multicast routing table.
2. Check the type of the interface that connects the static multicast route to the RPF neighbor. If the
interface is not a point-to-point interface, make sure you specify the address for the RPF neighbor.