[j-nsp] Multicast control with IGMP snooping

[Larry Jones]

See this:
https://www.juniper.net/documentation/en_US/junos/topics/reference/configura
tion-statement/multicast-router-interface-igmp-snooping.html

-----Original Message-----
From: juniper-nsp <juniper-nsp-bounces at puck.nether.net> On Behalf Of Norman
Elton
Sent: Monday, December 9, 2019 06:03
To: juniper-nsp at puck.nether.net
Subject: [j-nsp] Multicast control with IGMP snooping

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 at puck.nether.net
https://puck.nether.net/mailman/listinfo/juniper-nsp