I have a customer with an Arista-DCS-7150S-52-CL-R running 4.15.9M code. They have a fairly complex set of hosts and a large number of multicast groups. Occasionally, one host will become deaf to a group. A “netstat -ng” on the host indicates that the operating system still thinks it is subscribed to the group.
Is there any way to determine if the routing table is overflowing and multicast routes are being trimmed? Or if other limited multicast resources are being exhausted?
I suspect the solution is to reduce the number of multicast groups being used, but we would like to determine the root cause of the deafness before making changes to their applications.
To get relevant to your situation help, I would suggest you dropping an email to firstname.lastname@example.org with brief description of the problem. If you hitting a HW limitation, I believe TAC would be the best place to confirm that.
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