i configured two cnr for simple failover scenario.i only used CNR as DHCP server.
i follow the user guide in http://www.cisco.com/en/US/docs/net_mgmt/network_registrar/6.2.1/user/guide/UG26_Fai.html
however, if the backup cnr is in empty i can synchronized the server for the first time. but after that, if i made some changes in dhcp area, and want to snychronize again, the changes that i make is not propagated to the backup server.
i tried to synchronize using web, and nrcmd, both fails.
any feedbacks are welcome,