[j-nsp] igmp snooping layer 2 querier breaks ospf in other devices

[Crist Clark]

I thought this was asked, but don’t recall an answer, what’s the point of
turning on a querier if the switch is already a PIM router? You don’t need
an IGMP snooping querier if it’s a multicast router.


On Fri, Feb 2, 2024 at 8:21 AM Aaron Gould via juniper-nsp <
juniper-nsp at puck.nether.net> wrote:

> I tried to recreate the scenario in my lab with no success
>
> 21.2R3-S4.8 - in lab - problem not seen
> 20.2R3-S7.3 - in lab - problem not seen
> 19.2R3-S6.1 - in lab - problem not seen
> 18.3R3-S6.1 - in lab - problem not seen
> 17.4R2-S11  - in lab - problem not seen
>
> 17.4R2-S11  - in field - problem seen
>
>
> again, the problem is, when i enabled this command...
>
> set protocols igmp-snooping vlan vlan100 l2-querier source-address
> 10.100.4.1
>
> ...a customer riding an l2circuit on ge-0/0/2 report to me that their
> multicast stops working... ospf goes down and stays in INIT...
>
> when i remove all pim and igmp, then there OSPF neighbors up and stabilizes
>
> i just don't know how running igmp inside vlan 100 with ports ge-0/0/4,
> 5 and 6 would have anything to do with an l2circuit on ge-0/0/2
>
>
> -Aaron
>
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