Multicast at 1000 Mbits/s works, but 100 Mbts/s don't.

[Paris]

Hello community, I have a
problem while I'm uploading an image with my fog server: multicast works well with my X440 switches (1000 Mbits/s) but with my x250 (100 Mbits/s) it stops after ~5min. It resumes when I restart all my ports concerned by my deployment: (my fog server and PCs).

When it stops, my PC unsubscribe to the udpcast group and resuscribe when I restart my ports.

I have the same issue when i configure my X440 PC ports at 100Mbits/s.

There is nothing in my logs that says that's my ports are blocked or somethings...

What do you suggest me to check ?


Thanks!

Best regards,
Adrien, from France.

[OscarK]

It looks to me the multicast stream times out on the switch. take a look at igmp snooping on the X250 switch. Packet handling is not handled differently between 1 gb port or a 100 Mb port, internal it is all handled the same. However the table sizes of older and newer switches differ and multicast table size could play a role here.