[cisco-voip] intercluster trunk over IPSec VPN

[Dennis Heim]

I think you answered your own question. IPSEC tunnel's take time to bring up. Maybe you could tweak some of the VPN negotiating parameters, or create a separate L2 tunnel profile/group just for your voice that is permanent and does not have an inactivity timer.


Dennis Heim
Senior Engineer (Unified Communications)
CDW  Advanced Technology Services
10610 9th Place
Bellevue, WA 98004

425.310.5299 Single Number Reach (WA)
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From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Abebe Amare
Sent: Tuesday, February 07, 2012 4:10 AM
To: cisco voip
Subject: [cisco-voip] intercluster trunk over IPSec VPN

Dears,

I have configured an Inter-Cluster trunk from CUCM to another site with CUCME. There is an IPSec L2L VPN terminating at ASA 5500 firewall on both ends

CUCM --->ASA 5540--->Internet <---ASA 5510<---CUCME

On the ASA,the IPSec tunnel is terminated after 30 minute of inactivity (default) which is causing a problem. When a phone in one site tries to call another phone in the other site there is a noticeable gap before actual conversation is heard over the phone. Once conversation starts, there is no delay or break in audio. Has anyone faced this issue?

best regards,

Abebe
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