site-site vpn connecting after clear isakmp sa

Hi,

my site-Site vpn is working fine, each week or two they are discunnected & i have to clear the isakmp sa's & it is backed.

can iany one tell me what is this problem.

regards

Heya,

Try checking the IPSEC and ISAKMP timers. Looks like a timer mismatch to me.

A 2 week timer looks a bit long but the timers might mismatch outside office hours so you wont notice the VPN going down.