IPSEC VPN with Cisco ISR

cancel
Showing results for 
Search instead for 
Did you mean: 

IPSEC VPN with Cisco ISR

L1 Bithead

I'm trying to set up a site-to-site VPN tunnel with an outside company from a PA-4050 on our side to a Cisco 3925 ISR.  We can't can't get phase 1 to come up, though we're confident that the relevant settings (PSK, encryption, etc..) match up.  We've tried different encryption settings, but the connection just times out on both ends.  Before I go too crazy with it, I'm wondering if anyone has any experience going from a PA to a Cisco ISR, and if there is a trick, or if they just don't work together.

Thanks for any insight you might have.

- Brandon

3 REPLIES 3

L4 Transporter

Brandon

There are no special tricks for the Phase 1 to come up, only for Phase2- If you are not using VTI interfaces on the cisco router, i.e route based VPN, you must configure proxy-ids on the PAN device. Can you also look at the phase1 logs on the cisco side? "debug crypto isakmp" ?

Thx

Jerish

That's as I figured, but I thought I'd ask.  This is a policy-based VPN, so I do have the proxy IDs configured.  But as you say, that should only affect phase 2.  I don't have access to the Cisco, but it's a good idea to ask them to run "debug crypto isakmp".  Chances are we're just mismatched on something.  Because we're in different time zones I wanted to make sure I wasn't running into an incompatibility before we spend a lot of time on the phone digging too much into the configs.  Thanks.

You can also look at the system logs on PAN side with subtype of "VPN". Check for any Phase1 errors. Most the of the meaningful error messages will be on the IPSec responder side

Like what you see?

Show your appreciation!

Click Like if a post is helpful to you or if you just want to show your support.

Click Accept as Solution to acknowledge that the answer to your question has been provided.

The button appears next to the replies on topics you’ve started. The member who gave the solution and all future visitors to this topic will appreciate it!

These simple actions take just seconds of your time, but go a long way in showing appreciation for community members and the LIVEcommunity as a whole!

The LIVEcommunity thanks you for your participation!