Please post the output of the following commands from the EXOS switch:
- show ports configuration no-refresh
- show ports rxerrors no-refresh
- show ports txerrors no-refresh
That should allow us to check port settings like speed, duplex, and flow control, as well as possible errors that might hint at duplex mismatch.
Another possibility involves IGMP snooping, seeing that the screenshot shows received multicast packets.
Thanks,
Erik