Our system is built around 2 scada servers. Both servers have a gateway function built in (they function as clients).

The idee is that different iec104 server paires can connect to our system and  get data from us. The servers of our employer works on the principle that only 1 of the redundant communication path is active at the time. During testing the takeover between this redundant pairs was working fine when we where looking in detail we saw that the communication was establish to both of our servers .  So far so good. But after 2 minutes the standby server was disconnected  en reconnect some time later.
Is this normal behavior?