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Webcast-Catalyst9k
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Multicast Problem - Pruning

My router is running Sparse-Dense mode connect to the core router (which is also the Auto-RP) via a Tunnel (on an ATM network).

The MC group is configured with sparse mode. I have "ip join-group x.x.x.x" running on one of my FastEthernet interface.

The stream is running fine for couple of minutes until the router send out a prune message to the upstream router. THe hosts behind the FE do not support IGMP so they rely on the router to join group on their behalf.

Question: why is my router sending out prune message when it has a interface configured with "ip igmp-group" command? Shouldn't it be treated as active receiver all the time?

Thanks for helping.

1 REPLY
Bronze

Re: Multicast Problem - Pruning

Agatha,

Does the router directly connected to the receivers think the best path to the RP is across the tunnel (check with sh ip rpf )? What about to the actual mutlicast source?

~Zach

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