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Hybrid 6500 with HSRP and Multicast

Unanswered Question
Aug 21st, 2007
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I am running into an issue with multicast and HSRP on a hybrid 6500. The 6500 has redundancy implemented and there is a primary and alternate ip address required for each interface. Unicast routing is using a both the primary and alternate ip address to get to different destinations. In some cases if there are two different ip addresses on the 6500 each will use a different IP as the next hop. I believe because of this I am getting RPF failures. I tried adding adding static mroutes but this does not seem to help. I was able to associate with the RP via autorp but when i do a ping test using the ip igmp join-group that's when i am seeing this issue.

any help would be greatly appreciated.

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nambi_gct Tue, 08/21/2007 - 05:44
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Q. Can I use Hot Standby Router Protocol for Multicast?

A. Hot Standby Router Protocol (HSRP) is designed for host in last hop networks, in order to have a failover for Unicast routing. It is not generally recommended to use HSRP for IP multicast routing.

For additional information, please visit:


Edison Ortiz Tue, 08/21/2007 - 18:10
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Can we see that portion of the config along with the output from

show ip mroute

show ip mroute count

show ip pim rp mapping


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