I got some strange behaviour with a vpn connection from a Cisco PIX 501 to a Cisco VPN Concentrator 3005. The vpn connection runs up to aprox. 1 hour and then disconnects and then reconnects.THe user behind the pix 501 does not recognize it.
What can be the problem ?
I will try to get the logfile from the concentrator
When a VPN tunnel disconnects without the PC behind the VPN 3002 logging off from the GateKeeper, problems may occur. This is so whether the VPN session terminates gracefully, or because of a network failure (NetMeeting PC reboots or VPN 3002 reboots).
Because of the failure to log off, a registration mismatch may occur between the GateKeeper and the NetMeeting application. The GateKeeper maintains a NetMeeting registration based on a configurable inactivity timeout period, with the default being one hour. If a PC attempts registration after a disconnect and before the timeout period has expired, the GateKeeper rejects the request
The solutions are two:
1. Log off from the GateKeeper before disconnecting the tunnel.
2. Set the GateKeeper registration timeout value to a shorter time period. We recommend 15 minutes. Use the `endpoint ttl' command on the Cisco GateKeeper to set this value
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