I have 2 CCM servers configured in a server group (CCM1, CCM2) that most of my phones are registered with. I also have 2 Cisco 2851 gateways running MGCP with PRIs that the CCMs can route to. When registered to CCM1, I can make calls just fine, but when registered to CCM2, calls fail.
If I do a 'show ccm-manager hosts' from either gateway, I can see CCM1 is registered with CCM2 as a First Backup, status of "Backup Ready". Do the calls from CCM2 fail because it is only a backup and not actually registered with the gateway?
So, can both CCMs be registered to the gateways at the same time? I am concerned that if this is normal behavior, what happens if I lose IP connectivity to CCM1 from my phone, but the gateway still sees it as being alive, therefore never failing over to CCM2 so that I can make calls?
Any good documents on this are welcome. I just haven't been able to find this particular information for whatever reason... Thanks!