BSR and Filtering

Routing & Switching Multicast
1

I have a 3750X switch with routing and multicast enabled. How can I prevent igmp joins from a specific multicast group?

I have tried profile filtering, multicast boundry acl, and access-list but nothing seem to work. I was thinking I could make the switch a BSR and Candidate RP since the group I want to block is its own network. May then apply the bsr boundry to prevent unwanted igmp joins from being seen through the network.

2

Hi Shannon,

Normally, IGMP profiles on the switch should do the job or you can filter on the router:

I don’t remember having any issues when I tried those options. Is there anything else in your configuration that could influence this?

3

Hi Rene,

I figured it out! Our ACL was not configured properly. I created an ACL that blocks icmp, ip, and pim from a specific multicast group as well as non-broadcast source IP. After watching the hits, we realized the traffic hit the IP acl from the source IP. Now everyone seem to be happy… slight_smile:

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