You can try moving the IGMP querier function from the router to a switch. Also refrain from using multicast-router-interface on the uplink port to the router. These may help, although they mention QFX and SRX. I'm not sure if EX-series is supported for this feature (but the command is there on my EX4300):
https://www.juniper.net/documentation/en_US/junos/topics/concept/igmp-snooping-qfx-series-querier.html https://www.juniper.net/documentation/en_US/junos/topics/reference/configuration-statement/l2-querier-igmp-snooping-qfx-series.html https://www.juniper.net/documentation/en_US/junos/topics/task/configuration/igmp-snooping-qfx-series-cli.html On Mon, Dec 09, 2019 at 10:03:05AM -0500, Norman Elton wrote: > Hello, > > In a fairly large EX switching environment, we're using IGMP snooping > to constrain some AV-over-IP multicast traffic. It's quite > bandwidth-intensive, so we obviously don't want it broadcasting over > our L2 network. > > According to The Rules, multicast traffic gets sent to any subscribed > host interface (learned through a membership report), as well as to > any router interface. This means that our router will see all the > multicast on the subnet, even if none of it needs to be routed. The > link between the L2 network and the router will get saturated with > multicast. > > I suppose we could give the router a beefy 40G connection, and use QoS > to handle congestion. But I was hoping to find a way to keep the > multicast pushed down in the EX environment where it actually belongs. > > Am I missing something here? > > Norman _______________________________________________ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp