Hi, Lincoln, *sigh* Ok, I see what happened. We just went through a software upgrade cycle on that unit and it got upgraded to the end of 4.6 instead of being upgraded to the latest release version of EOS. Looks like another upgrade needs to be done, probably to 4.8.3 Thanks. George From: lincoln dale [mailto:ltd@interlink.com.au] Sent: Thursday, February 09, 2012 1:47 PM To: George Bonser Cc: Leigh Porter; nanog list Subject: Re: 10G switchrecommendaton hi George, IGMPv3 snooping has been supported since EOS 4.7. Its enabled by default in EOS 4.8.x. In terms of specifics, there is support for both IGMPv3 snooping & IGMPv3 querier. There isn't currently support for IGMPv3 snooping querier. cheers, lincoln. On Fri, Feb 10, 2012 at 8:17 AM, George Bonser <gbonser@seven.com<mailto:gbonser@seven.com>> wrote: Feb 9 07:42:21 SJC-AGS-01 IgmpSnooping: %IGMPSNOOPING-4-IGMPV3_UNSUPPORTED: IGMPv3 querier detected on interface Port-Channel1 (message repeated 34 times in 625.028 secs) SJC-AGS-01#sho ver Arista DCS-7124S-F Hardware version: 06.02 Serial number: JSH10130054 System MAC address: 001c.7308.752f Software image version: 4.6.4 Architecture: i386 Internal build version: 4.6.4-434606.EOS464 Sure, we can discuss it. From: lincoln dale [mailto:ltd@interlink.com.au<mailto:ltd@interlink.com.au>] Sent: Thursday, February 09, 2012 1:13 PM To: George Bonser Cc: Leigh Porter; nanog list Subject: Re: 10G switchrecommendaton On Fri, Feb 10, 2012 at 7:24 AM, George Bonser <gbonser@seven.com<mailto:gbonser@seven.com>> wrote: It's pretty good gear. The only problem I've had with it is the limitation of IGMP not working on mLAG VLANs. IGMP should work just fine with MLAG. IGMP state is sync'd between the MLAG pair. Happy to talk about this more off-list if you wish. cheers, lincoln. (ltd@aristanetworks.com<mailto:ltd@aristanetworks.com>)