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vpn link freezes

Hi;

I recently upgrade our 3000 concentrator to image 4.1.7 and since then my concentrator has started to act strange. last night it just froze up and did not allow access from neither the LAN or the WAN. the tunnels are shown on the concentrator as up but no data flows between the link. The concentrator needs to be restarted to get the tunnels renegotiated. this has only started to happen after the image was upgraded. Any one have any suggestions?????

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Re: vpn link freezes

How often do you have to restart the concentrator? What does the log in the concentrator say? Check the SA lifetime values at the both ends of the tunnel.

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