Kernel Warnings snoop_cache_unresolved

[Josh9]

Hi Guys

Having a load of these warnings pop up in the logs on my stack and I don't seem to find anything on the forums about it.

Slot-1: exosSnoop: snoop_cache_unresolved:800: Dropping v4 packet with src:x.x.x.x dest:x.x.x.x vlan: **** as number of resolved cache entries reached maximum limit

I take it this has something to do with Multicast? If not any info would be great.

[Ram3]

By default, it is enabled.

Please share the below outputs:
a. debug hal show ipv4mc
b. show mcast cache
c. show igmp snooping vlan vlan2018

- Is this a valid destination group address in the network?
- Who is the source IP, any kind of server which generates multicast packets?

[Josh9]

Is the snooping module enabled by default as I don't have it defined anywhere in my switch configs.

Would it be worth disabling the snooping module?

[Ram3]

These messages are generated by the exsnoop kernel module, and it generates this message if 2048 or more packets are queued up to be processed by the snooping module. This message is logged the first time this limit is hit, and thereafter for every 10000 packet that hits this condition.