We have configured Site-to-site VPN from 1841 to partner VPN head end device over internet. It works fine but suddenly tunnel goes down fro some unknown reason and comes up without changeing any configuration. Internet link utilization is also well within limit.
We have configured crypto isakmp lifetime as 3600. Changeing it to 600 will cause isakmp parameters to be refreshed every 10 minutes, will it help?
I didnt get chance to see crypto isakmp sa status "QM_IDLE" or not.
Any experience for VPN tunnel going down over internet while all other internet activity is working normally.
Please share the experience.
Thanks in advance.