[cisco-voip] PRI usage SNMP

[Afatsum]

I dug out my old TAC case email and seems like you might have the same issue. Below is the TAC case response I had. The case was open for 3745 back in June 2007. The 3745 in case was in production for two years already and running older version of IOS. I was able to poll 3825 and get proper repsonse from them and they were running much recent version of IOS. So I believe the bug might have been fixed in later version release. But I didn't pursue it much since we only had one 3745 and no one was interested in upgrading IOS.


=== TAC response below ===
Thank you for your response & for providing the information. However, unfortunately, there are some known issues to get the channel usage of E1/T1 when MGCP configured 

The MIB that would provide you with all the details is CISCO-VOICE-DIAL-CONTROL-MIB and CISCO-POP-MGMT-MIB

However, as MGCP is configured on the device, all the control function will be on the Cisco Call Manager, so the router is a dump terminal. That is why

we are unable to get any data via SNMP

There have been couple of bug currently logged to address this issue 

(1) CSCsh28603: callActiveDS0s MIB variable not populated when MGCP configured.

and

(2) CSCsh50451: rscmon returns wrong number of active DS0 calls when no dp assoc in MGCP

There has been quite a few number of cases in the past where the customer has requested for this information. However, the DE team are currently

working on this to try & find a fix. Unfortunately, I don't see any date or

revision of IOS which had commit the fix.

So, the only workaround that I can think of is to write a script to manually

telnet into the device & capture the output of 'sh voice call status'

Alternatively, if you configure H.323 codec, then you would be able to poll

the following OID's to get the channel usage

- cpmActiveDS0s 

- cpmDS1ActiveDS0s

- cpmActiveDS0sHighWaterMark

- cpmDS1ActiveDS0sHighWaterMark

I hope that answers your question. 

== End Reponse ===

  ----- Original Message ----- 
  From: Norton, Mike 
  To: Afatsum ; cisco-voip at puck.nether.net 
  Sent: Friday, January 16, 2009 8:56 AM
  Subject: RE: [cisco-voip] PRI usage SNMP


  That sounds like it could be what I'm seeing. Any chance you know the Cisco bug ID?

   

  -- 

  Mike Norton

  I.T. Support

  Peace Wapiti School Division No. 76

  Helpdesk: 780-831-3080

  Direct: 780-831-3076

   

   

  From: Afatsum [mailto:afatsum at verizon.net] 
  Sent: January-15-09 11:00 PM
  To: Norton, Mike; cisco-voip at puck.nether.net
  Subject: Re: [cisco-voip] PRI usage SNMP

   

  I was able to monitor on 3745 but there was a bug in the IOS version which caused the OID value to be zero. I don't remember the exact OIDs but it was a table and I was using Cacti with its xml script to parse it.

    ----- Original Message ----- 

    From: Norton, Mike 

    To: cisco-voip at puck.nether.net 

    Sent: Thursday, January 15, 2009 4:01 PM

    Subject: [cisco-voip] PRI usage SNMP

     

    I'm trying to monitor PRI channel usage with SNMP and not having much luck with one of my gateways. I have it working with 2811 routers, but can't get it working with a 3725. MGCP. I can't figure out what OID to monitor. Or is this not supported on 3725?

     

    -- 

    Mike Norton

    I.T. Support

    Peace Wapiti School Division No. 76

    Helpdesk: 780-831-3080

    Direct: 780-831-3076

     


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