I want a VPN backup between 2 sites. The sites are currently connected using 2 layer 3 switches.
I have a Sonicwall on either site running the Enhanced firmware and a VPN is established over ADSL. I added in a second route with a metric of 2 on the switches and this points to the LAN IP of the Sonicwall.
When I pull the cable on the primary link I see that the route on the switch changes to point to the inside of the Sonicwall but my pings are timing out and the firewall isn't dropping the packets as I am tracing them and the traffic is allowed across the VPN tunnels.
Does it have a problem with sending the traffic back out onto its LAN interface when the primary link goes down?
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