CAM could be overloaded by trying to send CAM messages to hosts which are not reachable anymore and which have a proxy queue.
Machine 192.168.188.240 has a proxy queue 192.168.188.246.
This machine is not on the network anymore. There are 281 CAM messages in queue.
CAM has done 15512 sending retries. The 281 messages are never discarded.
CAM resends the messages in queue every 2 seconds.
If there are a lot of Host queue like this, cam could be overloaded by resending cam messages and could not process in time messages for others hosts or applications.