Database state randomly switching from healthy to disconnected and healthy state and vice versa in exchange 2013 sp1

Hi All ,
In my environment we have DAG with three nodes .Two nodes are in PR site and one is in DR site .
When i do the replication test on the node in DR site i am facing the below mentioned error message.
RunspaceId : a4cbb93c-18f4-4413-bdb6-34b2da05c402
Server : server3
Check : DBDisconnected
CheckDescription : Checks if any database copies are in the 'DisconnectedAndHealthy' state.
Result : *FAILED*
Error : Continuous Replication for database 'DB-1\server3' is in a 'DisconnectedAndHealthy' state on server 'server3'.
Communications couldn't be established with the server hosting the active copy of this database. Log shipping is currently stopped for this database copy.
All of you share me your suggestions and this is an production issue i need to fix this immediately.Please help me out on this case.
Thanks & Regards S.Nithyanandham

Make sure sleep NIC is not happening:
http://blogs.technet.com/b/exchange/archive/2013/10/22/do-you-have-a-sleepy-nic.aspx
Sounds like it could be related.
NOTICE: Posts are provided “AS IS” without warranty of any kind, either expressed or implied, including but not limited to the implied warranties of merchantability and/or fitness for a particular purpose.

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