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

[Aaron Gould]

thanks and yes, working on it....

i've done my best to recreate this scenario in my lab...

21.2R3-S4.8 - in lab - problem not seen
20.2R3-S7.3 - in lab - downgraded an hour ago - problem not seen
19.2R3-S6.1 - in lab - downgrading now... will let you know... if good, 
will continue
18.3R3-S6.1 - will move to this if problem not seen in 19.2
17.4R2-S11  - will move to this if problem not seen in 18.3...this 17.4 
is what is in the field


-Aaron


On 2/1/2024 3:15 PM, Karsten Thomann wrote:
> Hi Aaron,
>
> as you're using a 3,5 years old junos, is it possible to upgrade and check if
> the problem is fixed in a newer version?
> The latest is from March 2022, but I would still expect some bug fixing.
> Maybe there is something wrong in the programming of the hardware...
>
> Kind regards
> Karsten
>
> Am Donnerstag, 1. Februar 2024, 19:41:12 CET schrieb Aaron Gould via juniper-
> nsp:
>> does this help?
>>
>> ACX5048
>> - port ge-0/0/4 - vlan 100 - multicast listener/client
>> - port ge-0/0/5 - vlan 100 - multicast listener/client
>> - port ge-0/0/6 - vlan 100 - multicast listener/client
>> - irb.100 routes that vlan - runs pim/igmp/igmp-snooping l2-querier
>> - xe-0/0/0 - an uplink port running pim to route ssm multicast joins to
>> the multicast sender
>> - port ge-0/0/2 is mapped to an l2circuit over mpls to some remote location
>> --- i don't see ge-0/0/2 related at all to the vlan 100 where i run
>> multicast
>>
>> -Aaron
>>
>> On 2/1/2024 8:19 AM, Andrey Kostin wrote:
>>> Hi Aaron,
>>>
>>> It's not clear from your explanation where l2circuits with ospf are
>>> connected and how they are related to this irb/vlan.
>>> Do you really need a querier in this case? IIRC, querier is needed
>>> when only hosts are present on LAN and a switch has to send igmp
>>> queries. In your case, you have a router with irb interface that
>>> should work as igmp querier by default. Not sure if it helps though.
>>>
>>> Kind regards,
>>> Andrey
>>>
>>> Aaron Gould via juniper-nsp писал(а) 2024-01-31 14:54:
>>>> I'm having an issue where igmp snooping layer 2 querier breaks ospf in
>>>> other devices which are in l2circuits
>>>>
>>>> Has anyone ever come across this issue, and have a work-around for it?
>>>>
>>>> I have the following configured and devices in vlan 100 can join
>>>> multicast just fine.  But there are other unrelated l2circuits that
>>>> carry traffic for devices in other vlans and inside this l2circuit is
>>>> ospf hellos that seem to be getting broken by this configuration
>>>>
>>>> set interfaces irb unit 100 family inet address 10.100.4.1/27
>>>> set protocols ospf area 0.0.0.1 interface irb.100 passive
>>>> set protocols igmp interface irb.100 version 3
>>>> set protocols pim interface irb.100
>>>> set protocols igmp-snooping vlan vlan100 l2-querier source-address
>>>> 10.100.4.1
>>>>
>>>> Model: acx5048
>>>> Junos: 17.4R2-S11
>
>
>
-- 
-Aaron