VPN connectivity flaps

Unanswered Question
May 4th, 2008

Hi,

I have a Cisco ASA 5520 firewall device, we have configured about 60 site-to-site vpn tunnels to our clients. In the recent days at least once in a day all my VPN tunnels flaps, all I will do is "clear crypto isakmp sa" & then the VPN tunnel works fine, this has become now a regular practice, All I wanted to know the root cause for this that why this is happening only on a particular time.

I have 2 Cisco ASA with the same hardware & s/w other acting as a standby device.


Cisco Adaptive Security Appliance Software Version 8.0(2)

Device Manager Version 6.0(2)

Compiled on Fri 15-Jun-07 19:29 by builders

System image file is "disk0:/asa802-k8.bin"

Config file at boot was "startup-config"

Hardware: ASA5520, 512 MB RAM, CPU Pentium 4 Celeron 2000 MHz

Internal ATA Compact Flash, 256MB

BIOS Flash AT49LW080 @ 0xffe00000, 1024KB

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srue Mon, 05/05/2008 - 15:24

do the logs show anything? what about debugs?


Anand Narayana Mon, 05/05/2008 - 15:28

logs are normal even they flaps, no difference on the debug to whether the vpn flaps or in a normal condition

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