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CSS326-24G-2S+ IGMP Member dropping from group

Thu Apr 09, 2020 12:43 am

Hi all

I have two CSS326-24G-2S+'s behind a pfSense firewall / router. When trying to watch IPTV, the client drops from the IGMP group every few seconds.
I've noticed, that the times the stream starts and stops playing directly corresponds with membership queries from the router (stop) and a membership report from my client (start):

It seems that the switch is dropping the client immediately upon receiving the membership query from the router, and I don't think that this is the correct behaviour?
I've verified that the router doesn't stop sending the video packets once, the break is happening somewhere with the switches. Another cheap switch I own (Netgear GS105E-200PES) is working fine with IGMP Snooping enabled.

The switches are both on version 2.11 (newest). This is their IGMP configuration:

Is there anything I can try to fix this issue? Is a software fix necessary?
Let me know if I can provide any more information on the issue.


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