PIX 501 VPN Problem

[sadok.mouha]

I have a 501 device. I have configured a site 2 site tunnel. It worked for a while (2 days) and then stopped. The problem now is that I'm blocked in Phase 1. My pix send a packet ISAKMP to the other side, the second respond and my pix does nothing when receiving it, strange.

attached is the config and the debug, any help please?

Thanx

[RubinoM]

The problem may be in the router.

What's happened after the fist 2 days?

Why the tunnel stops?

Are you sure that the tunnel was working rightly in the fist period?

[sadok.mouha]

Thank you for your help during last days. Finaly, It worked 🙂 I reset to factory default and reconfigured the vpn Tunnel. Until now, I don't understand the real problem. I'm going to restore my config (access-list, ...) and see where is the problem.

Thank you again