You need a L3 interface running IGMP/PIM to be the IGMP querier on the network. Otherwise there is no mechanism to manage who wants to join/leave.
As an alternative you can turn off IGMP snooping on that VLAN and the multicast will flood to all ports within the VLAN. If it spans more than 1 switch you will need to disable IGMP snooping on all switches. 6500 have IGMP querier you can add on L3 interfaces wo PIM but don't think 3560s do. Corey On Mar 1, 2012, at 5:15 PM, Ben Hughes <[email protected]> wrote: > So long as there is a router or some device with IGMP and PIM running > connected to the VLAN you wouldn't need to have multicast-routing enabled on > the switch. > > cheers, > Ben. > > From: Jay McMickle <[email protected]<mailto:[email protected]>> > Date: Thu, 1 Mar 2012 15:01:46 -0800 > To: Ben Hughes <[email protected]<mailto:[email protected]>> > Cc: marc abel <[email protected]<mailto:[email protected]>>, > "[email protected]<mailto:[email protected]>" > <[email protected]<mailto:[email protected]>> > Subject: Re: [OSL | CCIE_RS] Intervlan multicast across switces > > Right, but even with sparse-mode multicast? This isn't standard multicast, > but maybe I'm making it a larger issue than it is. > > Regards, > Jay McMickle- CCNP,CCSP,CCDP > Sent from iJay > > On Mar 1, 2012, at 2:58 PM, Ben Hughes > <[email protected]<mailto:[email protected]>> wrote: > > Hi Jay, > Yes, it will work fine without multicast-routing turned on. Otherwise we'd > have to turn on multicast-routing when ever we run an IGP or HSRP etc. > cheers, > Ben. > From: Jay McMickle > <[email protected]<mailto:[email protected]><mailto:[email protected]>> > Reply-To: Jay McMickle > <[email protected]<mailto:[email protected]><mailto:[email protected]>> > Date: Thu, 1 Mar 2012 14:53:23 -0800 > To: Ben Hughes > <[email protected]<mailto:[email protected]><mailto:[email protected]>>, > marc abel > <[email protected]<mailto:[email protected]><mailto:[email protected]>>, > "[email protected]<mailto:[email protected]><mailto:[email protected]>" > > <[email protected]<mailto:[email protected]><mailto:[email protected]>> > Subject: Re: [OSL | CCIE_RS] Intervlan multicast across switces > I think the question is in regards to capabilities. > Does multicast propogate across trunks without multi-cast routing distributed > enabled? I don't know the answer, so I am also interested in the answer. > Marc- is that the question? > Regards, > Jay McMickle- CCNP, CCSP, CCDP, MCSE > http://mycciepursuit.wordpress.com/ > Support me in the MS150 Challenge! > http://main.nationalmssociety.org/site/TR/Bike/TXHBikeEvents?px=5886043&pg=personal&fr_id=17896 > From: Ben Hughes > <[email protected]<mailto:[email protected]><mailto:[email protected]>> > To: marc abel > <[email protected]<mailto:[email protected]><mailto:[email protected]>>; > "[email protected]<mailto:[email protected]><mailto:[email protected]>" > > <[email protected]<mailto:[email protected]><mailto:[email protected]>> > Sent: Thursday, March 1, 2012 4:07 PM > Subject: Re: [OSL | CCIE_RS] Intervlan multicast across switces > Hey Marc, > Storm Control or VACL? I've also had a similar issue at a customer site > before that turned out to be a faulty SFP on the link between switches. The > faulty SFP would allow unicast and broadcast packets across but drop > multicast. > cheers, > Ben. > From: marc abel > <[email protected]<mailto:[email protected]><mailto:[email protected]><mailto:[email protected]<mailto:[email protected]>>> > Date: Thu, 1 Mar 2012 10:58:20 -0600 > To: > <[email protected]<mailto:[email protected]><mailto:[email protected]><mailto:[email protected]<mailto:[email protected]>>> > Subject: [OSL | CCIE_RS] Intervlan multicast across switces > If IP multicast routing is not enabled, multicast should > still propagate within the VLAN correct? Is there anything that would > prevent this multicast from flowing across a trunk? I have a situation > where servers in the same VLAN, but plugged into different switches are not > able to communicate by multicast. Can anyone explain why this might be? > Thank you, > Marc > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > Are you a CCNP or CCIE and looking for a job? Check out > www.PlatinumPlacement.com > http://onlinestudylist.com/mailman/listinfo/ccie_rs > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > Are you a CCNP or CCIE and looking for a job? Check out > www.PlatinumPlacement.com > http://onlinestudylist.com/mailman/listinfo/ccie_rs > > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > Are you a CCNP or CCIE and looking for a job? Check out > www.PlatinumPlacement.com > > http://onlinestudylist.com/mailman/listinfo/ccie_rs _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com http://onlinestudylist.com/mailman/listinfo/ccie_rs
