Hello experts, hope you can help
I have a cisco asa5510 with multiple lan to lan vpn's configured (terminating on a mixture of cisco 837, 877 and pix 501)
I also have a single lan to lan vpn terminating on a sonicwall pro 1260, this vpn does not come up, it fails phase 1,
looking at the logs from the sonicwall i seem to be getting errors "invalid cookie",
Now I have spent the 2 days trying to resolve this issue, I have looked on the web a few people seem to have the same issues, i have chacked my isakmp and ipsec (protected traffic) etc and all looks fine, it is worth mentioning we had a pix 515 before the asa and the sonicwall vpn terminated fine with that then, just no good with asa,
Already logged a call with sonicwall but they can not help, they said it should be working
someone has mentioned a way of disabling aggresive mode on the asa as this might be a problem (even though my tunnel is configured for main mode).... ?
I can provide error logs /configs but not until tomorrow morning,