Thanks for your reply. I have deployed same as mentioned in the document and working perfectly for the replication.

But i have serious problem. if i disconnect the network cable or restart the unit for example the primary one, the IP address on AAA server changed from the private IP 192.168.x.x to loopback IP 127.0.0.1.

Please advice.

This is due to this bug ,

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?caller=pluginredirector&method=fetchBugDetails&bugId=CSCso39795

Regards,

~JG

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