> It sounds like you might be describing a case where > - IGMP snooping is enabled on a switch > - There's no IGMP querier on the VLAN > > If so, then we're in agreement. That doesn't work (though it may appear to > work at first). > > There's a fourth option on some L2 switching platforms: enable an IGMP > querier on the L2 device. The queries don't have to come from anywhere > sensible.* As long as queries "just appear" on the LAN, clients will reply, > and the IGMP snooping switch can eat the host reports that come in reply to > his bogus queries. No L3 interface required. > > Definitely don't try to run IGMP snooping without a querier. >
At some point, depending on the topology (and especially if it's a one-off thing), it might make sense to set up a GRE tunnel between the endpoints and just run PIM on the tunnel. John _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
