I have set up a VPN to a Watchguard Firebox. I thought it was a relatively easy build but now whenever the SA timeout occurs (8 hours), the VPN tunnel stays down. When I do a sh cry it appears to fail on the key exchange. Once, the remote site tech rebuilds the VPN on the Watchguard side, the tunnel comes up.
Now, of course, I'm not asking for help with a WG Firebox but I am wondering if anyone has had experience with a 515E VPN to a WG Firebox and experienced difficulties with the tunnel.