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Clear Counters causes MGCP VG to failover to backup CM

I have 2 MGCP Voice Gateways and on one of them if I issue the Clear Counters command it causes it to failover to it's backup CM before switching back some 15-20 seconds later. No calls are disconnected but new inbound calls get engaged/busy whilst this anomaly does it's thing!

The other VG remains stable when this command is issued as you would expect.

Here is the limited output I see on the "jumpy" VG when the counters are cleared....

Apr 1 15:11:09.694: %CLEAR-5-COUNTERS: Clear counter on all

interfaces by logon

2console on vty1 (192.168.192.246), chnl info(0, 9, 8), chnl info(0, 3, 3), chnl

info(0, 1, 4), chnl info(0, 3, 3), chnl info(0, 9, 8), chnl info(0, 3, 3), chnl

info(0, 1, 4)

Apr 1 15:11:27.934: [S] mgcp_msg_ack:6046,Updating (*)=10.1.62.21, chnl

info(0,

3, 3), chnl info(0, 1, 4), chnl info(0, 3, 3), chnl info(0, 1, 4), chnl info(0,

3, 3)

Apr 1 15:11:45.735: [S] mgcp_msg_ack:6046,Updating (*)=10.1.62.22, chnl

info(0,

1, 4), chnl info(0, 3, 3), chnl info(0, 1, 4), chnl info(0, 3, 3), chnl info(0,

1, 4), chnl info(0, 3, 3)

Anyone any ideas on this random behaviour! Configs are identical and they are both running SP Services 12.4(7c).

I know the answer is don't clear the counters but I have people wanting to know why!

Cheers

Andrew

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