We have multiple OS400 systems that have agents on them. Approx. every 12 hours the AE indicates that the agent is down. When I check the OS400 system the agent is still up and active. If I send a ping to the OS400 system from the AE server it responds and the same is true for pinging from the OS400 to the AE server. The agent indicates a 3426 error saying 'A connection with a remote socket was reset by that socket'. If there is a long running job active the agent is less likely to show down. Any assistance figuring out why this may be happening or what we can do to stop it from happening would be appreciated.