Hi,
I have an EX4600 switch which I'm using for host connectivity (obviously). Now I need to set up a VRRP/CARP between two hosts. Surprisingly, it's not working. And the reason is that these two hosts simple don't see the multicast packets from each other, they do see only self-originating packets in tcpdump. Previously I have successfully set up such scheme on a variety of switches, including EX4600, and I see no big difference between them, except that the latter one has the EX4600-EM-8F modukle, but the two hosts with this issue are plugged into pic 0. I was suspecting it's the igmp snooping feature that blocks the multicast, but it turns out there's no such thing configured on my switch:
emz@sw0-lynx# show | match igmp
{master:0}[edit]
emz@sw0-lynx#
[...]
emz@sw0-lynx> show igmp snooping interface
warning: multicast-snooping subsystem not running - not needed by configuration.
I've also discovered, that if I put the hosts interfaces into a trunk, the multicast does work in non-default vlan.
Currently I have no ideas why is this happening, so I will really apreciate any.
Thanks.
Follow-up: I just discovered that on a working EX4600 fll the vrrp interfaces are in non-default vlans.