EtherNet/IP device is not able to establish new tcp connections after a specific achilles test related to encapsulation messages

In case of a higher encapsulation network load the queue of the encap task is completely filled with encapsulation messages coming from the network for a short amount of time.
In this situation the sending of the cyclic indication into the encap task queue failes, since the queue is already full.
This brings the encap task into a state where it will never receive the cyclic indication again and therefore will never open any new tcp or udp socket.