MGCP Gateway Issue

[barothiral111]

Hi All,

I configured MGCP on Gateway Router. I have a IP WAN cluster. One sub is on local site and pub and one sub on remote site.Now the issue started like MGCP fallback happened and then  the gateway started registering with different subscribers in cluster frequently. I have read some documents regarding this issue. But I did not get any solution. 

Kindly provide me any solution on this issue

[Jitender Bhandari]

Hi,

It would not be very simple, we would have to figure out is it happening because of some MGCP timer or just losing IP connectivity with CUCM.

you would have to collect below.

1) CUCM details traces for that time

2) Application \ System logs

from GW

1) debug mgcp all

2) Debug ip TCP transaction 

above debugs are verbose and can bring the router down if not collected on a syslog server

Collecting debugs in Syslog server
----------------------------------
Router#configuration terminal
Router(config)#no logging console
Router(config)#no logging monitor
Router(config)#ntp update-calendar
Router(config)#ntp server <IP Address of NTP Server>
Router(config)#service timestamps log datetime msec
Router(config)#service sequence
Router(config)#logging <Hostname or IP Address of SYSLOG server>
Router(config)#logging trap debug
Router(config)#exit
Router#

Note: NTP configuration is required when the problem involves multiple gateways.

(Rate if it helps)

JB

[barothiral111]

Hi 

I will apply this configuration and I will let you know.

Thanks so much for the advice.