[c-nsp] Cannot join a few multicast groups

[ML]

On 5/11/2010 6:01 PM, Tony Varriale wrote:
> I assume you have clients on the router having the issues.  Have you
> verified you are seeing the IGMP membership report?  Another
> troubleshooting step is to do a manual join on an interface
> (downstream/loopback/whatever) and see what you get.
> 
> How about some "sh ip mroute <group_ip> count" and "sh ip rpf <ip_addr>"?
> 
> Without understanding the topology and configs, that's about all I can
> give you.

Silly us.  Turns out a topology change did occur. More hops between
source and destination. A select few multicast sources had a very low
TTL of 8.