Router-to-PIX IPSec: isn't working!

[abibby]

Hi,

I've configured a PIX520 running 6.0(1) and a Cisco 2600 router as per the online example, but without NAT

http://www.cisco.com/warp/public/110/39.html

but when I try to pass traffic over the tunnel, it gives the error message

%CRYPTO-6-IKMP_MODE_FAILURE: Processing of Informational mode failed with peer xx.xx.xx.xx

I can find *lots* of references on the web with people with the same problem, but nothing on what the message means, or how to fix it!

Help!!

[cjacinto]

Really need the configs and full debugs on this to tell you what is wrong. Be best to log a case with TAC and work it that way.