06-04-2007 08:40 AM - edited 03-14-2019 09:52 PM
Is there another command to use for dial-peer failover other than the h225 timeout tcp establish command? I have set this command to 3 seconds, but it is still taking 15 seconds for the router to use the failover dial-peer. What can I do to speed this up?
Thanks,
Chris
06-09-2007 11:31 AM
The most suitable command for you use will entirely depend on the nature of the problem that is preventing the call from going out of one dial-peer. But, try putting in the following commands:
voice service voip
h323
h225 timeout setup 3
h225 timeout t302 3
Let me know if this helps.
06-10-2007 04:30 PM
I had a similar issue I opened a TAC case on last month, here was the response;
to give the
h225 timeout I bit more time, 4 seconds is the usual and in most cases we do not use the "h225 timeout setup 1" command and instead use the "h225 timeout tcp establish 4" with 4 seconds to establish the call. By default the IOS gives the call establishment 30 seconds and this is not recommended since if you have dial-peers that need to fail over to other call managers if they are not available such as pub or sub the call can timeout before it even hits the other dial-peer and is sent to the secondary call manager.
06-10-2007 06:48 PM
The command ?h225 timeout t302 3? only specifies a timeout for dial-peer matching. In this case it allows 3 seconds for the t302 timer to complete the dial-peer match before timing out.
I have also set up a lab to confirm in what is needed for preserving calls while fail-over occurs. There are only 2 things needed to preserve the call please review the following:
1st
Please configure call preserve on the h323 gateway:
!
voice service voip
h323
call preserve limit-media-detection
!
For further information please review the following link:
Configuring the Gateway
2nd
Please set the "Allow Peer to Preserve H.323 Calls" parameter to True on call manager.
From Service -->Service parameters --> From the Service menu select Cisco Unified CallManager click Advanced Scroll to the Clusterwide Parameter (Device ? H.323) section Set the "Allow Peer to Preserve H.323 Calls" parameter to True At the top of the screen click Update.
For further information please visit:
Configuring Cisco Unified CallManager
If you would like further information regarding call preserve please visit:
Configuring H.323 VoIP Call Preservation Enhancements for WAN Link Failures http://www.cisco.com/univercd/cc/td/doc/product/software/ios123/123cgcr/vvfax_c/callc_c/h323_c/323confg/4gwconf.htm#wp1149764
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide