How do I forward IGMP Joins without enabling PIM??

ericohalloran · ‎05-21-2010

I am connecting a Cisco Router to another proprietary device which can issue and respond to IGMP queries but is not capable of running PIM. I would like to be able to forward any IGMP joins from other router ports to this device so that I can send Multicast traffic. I toyed over the use of Multicast static routes and IGMP joins on interfaces but as we are going to be using a lot of Multicast groups, I don't want an unwieldy configuration. There must be a way of doing this without using PIM.

Thanks

Mohamed Sobair · ‎05-22-2010

Eric,

In order for the device to issue and respond to IGMP queries, then pim must be enable. this is a pre-requisit. I am wondering how the other router could issue IGMP queries and listen to IGMP membership from hosts without pim enabled on the interface.

HTH

Mohamed

vkoyi85 · ‎05-24-2010

If you want to work IGMP ,you need to configure IGMP snooping on router . or PIM.

I would expected that this would do it:
> (config-if)# ip igmp snooping querier

if you dont configure either of above two IGMP Joins wont work.

Hope this helps!!

Thanks & Regards,

Venkat Koyi