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CRYPTO-6-IKMP_MODE_FAILURE: Processing of Quick

im trying to configure a second VPN between PIX and Cisco ios. but i keep getting this message 1 20:57:30: %CRYPTO-6-IKMP_MODE_FAILURE: Processing of Quick mode failed with peer at <ip address of remote host> on the Cisco IOS. and my old VPN connection keeps timing out from time to time. any one can help me with this problem?

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Re: CRYPTO-6-IKMP_MODE_FAILURE: Processing of Quick

This error message indicates incompatible preshare policy and that tunnel negotiation has failed. More information can be obtained at "http://www.cisco.com/warp/public/707/17.html".

Your old VPN session might be timing out because of the configured parameters. You might have defined a "lifetime" somewhere. If your session is timing out each time, after being active for the same period of time, configured timer values are certainly causing it.

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