how to troubleshoot VPN's

Unanswered Question
Sep 25th, 2008
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I would like to know if anyone has any tips on troubleshooting L2L (and RA) VPN's. I usually use the ASDM wizard to create the VPN's and when it doesn't work, it get's messy.

I usually run the following debug:

no debug crypto isakmp 127

no debug crypto ipsec 127

Is there any way to determine why a tunnel is not coming up? anything with the ASDM?

The L2L config is fairly standard, nevertheless sometimes it doesn't work.

Any tips on troubleshooting and bringing a tunnel up.

Much appreciated.

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JORGE RODRIGUEZ Thu, 09/25/2008 - 08:48
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This two links will provide with substatial information on how to and what to look for

on Ipsec tunnel issues either l2l or RA vpns.

Most common L2L problems

Debugging IPsec




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