I have clients running IGMP version 3. IGMP snooping is enabled on my 2960 switch and the switch is tied to my 1811 router with IGMP v2 enabled. The problem I am experiencing is the multicast traffic does not begin to flow until router does the query not when the membership report occurs from the client. Does the switch not understand this message? When I switch the Router to IGMP version 3, the switch immediately passes the multicast packets but I seem to have another issue that after a few minutes my multicast traffic stops. When I run IGMP version 2 my packets continue forever, the only problem I have is the initial delay until the query occurs.
Any suggestions or insight would be appreciated.