[c-nsp] multicast on transit LAN

Phil Mayers p.mayers at imperial.ac.uk
Tue Feb 16 10:36:50 EST 2010

On 02/16/2010 11:29 AM, Marco Regini wrote:
> My last chance is to proxy the IGMP, let me explain:
> Receiver --Vlan7-- Fa0/7.Catalyst3560.Gi0/1---Vlan100-Gi0/1.Catalyst3750

So the 3560 and 3750 are routing the multicast?

In that case you probably need PIM snooping on the layer2 equipment 
between them. If you don't have that, then yes - IGMP proxy is an option.

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