i am using Cisco Network Registrar 126.96.36.199, i already configured one server as main DHCP and one server as backup.
after creating scope, policy, client and client class, and then synchronize to the backup server, it works fine.
but the problems occurred when i made some changes in the first server, and try to re-synchronize again for the second time, it fails.
my step is pretty simple,
in gui, creating local cluster, and the name, ip add, admin user and password, scp port, web ui port,
after that i'm adding failover pair ip address of main and backup server.
i did the same thing on the backup server.
but i dunno wheter the 'adding address block section' is needed for "simple DHCP failover".
thanks in advance,