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Community Member

Voice gateway unregistered

Some routing work has been done last night and connectivity has been restored however the VG in snot registered with the CUCM anymore. Any ideas why?

xxxx#sh ccm-manager
MGCP Domain Name: xxx.xxx.com
Priority        Status                   Host
============================================================
Primary         Down                     192.168.9.12
First Backup    Down                     192.168.9.11
Second Backup   None

Current active Call Manager:    None
Backhaul/Redundant link port:   2428
Failover Interval:              30 seconds
Keepalive Interval:             15 seconds
Last keepalive sent:            21:16:09 EST Feb 7 2012 (elapsed time: 17:09:55)
Last MGCP traffic time:         21:15:39 EST Feb 7 2012 (elapsed time: 17:10:25)
Last failover time:             21:16:11 EST Feb 7 2012 from (192.168.9.12)
Last switchback time:           21:16:42 EST Feb 7 2012 from (192.168.9.11)
Switchback mode:                Graceful
MGCP Fallback mode:             Enabled/ON
Last MGCP Fallback start time:  21:16:45 EST Feb 7 2012
Last MGCP Fallback end time:    20:59:26 EST Feb 7 2012
MGCP Download Tones:            Disabled

Thanks,

1 ACCEPTED SOLUTION

Accepted Solutions
Community Member

Voice gateway unregistered

Hi Sindan,

You do not need to define VG IP Address on CUCM as VG - MGCP is client - server and its the client (VG) which registers to CUCM.

Since, the VG is trying to register using the loopback and you have pointed out this communication might be blocked, use the following commands on the VG to use another routable / unblocked IP Address to register and communicate with CUCM

mgcp bind control source-interface

mgcp bind media source-interface

You can also refer to this document:

http://www.cisco.com/en/US/docs/ios/voice/mgcp/configuration/guide/vm_gw_mgcp_bind.pdf

HTH. Please rate posts.

Pratik

5 REPLIES
Community Member

Voice gateway unregistered

I see that the the CUCM Gateway : AALN/S0/SU1/0@xxx.xxx.com is actually seeing an IP addreess which is configured as the loopback on the VG. The VG cannot ping the CUCM from the L0 as a source. How can I change the IP address for the VG in CUCM?

Registration: Unknown
IP Address: 10.5.254.1

Super Bronze

Voice gateway unregistered

Hi

mgcp bind media source-interface x/x

mgcp bind controls source-interface x/x

The choice of IP is driven by the gateway itself, so set it there. CUCM just knows the mgcp domain name of the gateway.

Aaron Harrison

Principal Engineer at Logicalis UK

Please rate helpful posts...

Aaron Please remember to rate helpful posts to identify useful responses, and mark 'Answered' if appropriate!
Community Member

Voice gateway unregistered

Hi Sindan,

You do not need to define VG IP Address on CUCM as VG - MGCP is client - server and its the client (VG) which registers to CUCM.

Since, the VG is trying to register using the loopback and you have pointed out this communication might be blocked, use the following commands on the VG to use another routable / unblocked IP Address to register and communicate with CUCM

mgcp bind control source-interface

mgcp bind media source-interface

You can also refer to this document:

http://www.cisco.com/en/US/docs/ios/voice/mgcp/configuration/guide/vm_gw_mgcp_bind.pdf

HTH. Please rate posts.

Pratik

Community Member

Voice gateway unregistered

Thank you all, I removed the L0 ip address and as Pratik mentioned (MGCP is a client server protocol) the VG registered with a highest physical IP address.

Community Member

Voice gateway unregistered

Ok, great, all is good i used the voice vlan ip add for binding instead of the L0.

mgcp bind control source-interface GigabitEthernet0/0.3

mgcp bind media source-interface GigabitEthernet0/0.3

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