Troubleshooting Multicast Routing And Forwarding; Static Multicast Route Failure - HP MSR ASM Configuration Manual

# Display PIM routing table information on Router C.
[RouterC] display pim routing-table
VPN-Instance: public net
Total 1 (*, G) entry; 1 (S, G) entry
(*, 225.1.1.1)
Protocol: pim-dm, Flag: WC
UpTime: 00:04:25
Upstream interface: NULL
Upstream neighbor: NULL
RPF prime neighbor: NULL
Downstream interface(s) information:
Total number of downstreams: 1
1: Ethernet1/1
(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: Ethernet1/1
The output shows that Router A is the RPF neighbor of Router C and the multicast data from Router A is
delivered over a GRE tunnel to Router C.

Troubleshooting multicast routing and forwarding

This section describes common multicast routing and forwarding problems and how to troubleshoot
them.

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 the static multicast route is not configured or updated correctly to match the current network
•
conditions, the route entry and the configuration information of static multicast route do not exist in
the multicast routing table.
If a better route is found, the static multicast route might also fail.
•
Protocol: igmp, UpTime: 00:04:25, Expires: never
Protocol: pim-dm, UpTime: 00:04:25, Expires: never
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