Persistence with a Virtual Server that is being used as a Pool Member

To my knowledge, internal VS would need oneconnect profile with cookie persistence. External VS won't need persistence/oneconnect as it would have only 1 pool member (i.e. internal VS)

If session persistence is not working, clients would receive some other error but not the reset/disconnect. So please investigate the reason for the disconnect it could be something on the network, or pool members having issue.