I have a IPSec tunnel between ASA5520 and 1841. The ISAKMP lifetime is set to the default 24 hours on both end. No volume limit is configured. But the tunnel resets itself 1.5 hours ahead every day. I need to keep the resetting at night so that my special application won't be broken during work hours.
I thougt the premature resetting was due to IOS version on the router. I upgraded to a new version but did not fix the problem.
Besides the resetting, everything else is working fine.
Any ideas are appreciated.