Problem with server redundants

Problem with server redundants

Hi all.
I have a problem in servers redundant. i have 17 devices (sicam 1703 Bcu) in substation, 2 servers in redundant condition, and 2 hmi system. my problem is, when one of the servers (for example server1) runs, all devices see that, and communicate with that and work corrctly. but, when the second server runs, some deivces (about 9 of 17) cant see the second server and have a communication failure with the standboy server! it's not any difference in servers running priority, when i run server 2 at first, and then run server1, the problem still remain. until the first server that i run is hot, it's not a problem, but, when the first server fail, and second server switch to hot from standby, the problem begin and i have no signal from them beacause of communication failure. i check all bcu's and there was not client limitation for them, beacause all bcu's have only 2 client: server1 and server2!
please help me that what should i do?
thanks.

This is a migrated post! Originally posted on 20.05.2011 by user mohamad.kasaeifard. Please be aware that information can be outdated.

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