Hi We have a problem with an IPSec tunnel between our Cisco 1812 and a partners Cisco router. 3 times in the last 2 months the tunnel has stopped responding, in that we can no longer access the server at the partners site or ping it. When we check our router it states the VPN connection is up and tests ok. We have found that cycling the power on our router fixes this issue. Unfortunatly the link is business critical and have little time to diagnose the problem. I can't see anything in the cisco logs relating to the VPN. Was wondering if this could be a problem at our partners end and any advise on how to diagnose this problem next time it happens would be greatly appreciated.