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New Member

Callmanager failover

I have a silly question.. I have three callmanagers in a cm group

Sub, pub, sub in that order. When I failed the first two and left the third sub some devices like gateways (2801) VG248's started failing...

The PUB is the only TFTP server. I know it should be sub, sub, pub in the group but it was this way for a reason so why are some devices failing..

When a phone fails to the third callmanager does it reregister ?? fully ?

The gateways are MGCP...VG248 is SCCP

Ideas I must be loosing my mind


Re: Callmanager failover

Did you have multiple redundant hosts setup in MGCP ?

ccm-manager redundant-host

VG248 should have automatically pulled the group information from CCM.

Hall of Fame Super Silver

Re: Callmanager failover

I am not sure if you said that only the GW are having this issue or phones as well, but have you checked that the second SUB has CCM service running?


New Member

Re: Callmanager failover

Thanks for the replies. Yes I have the cm service running on all servers.

Yes it is phones as well as gateways and v248

I suspected that the vg248 should have pulled the ccm list.

As for the gateway I think I do have both hosts but I can double check..

I was concerned about having a single TFTP server.

Things got bad after failing the pub which was #2 in the group that is why I wondered what happens when the third callmanager kicks in.

I know that in a normal state that the phones talk to the primary and secondary callmanagers and that is why I wonder what happens when the second callmanager fails and the third one takes over from a phone perspective.

Thanks again guys

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