Simple WAN - 3 sites, one main and two remote sites connected via a MetroE with Cisco routers. IP address of cisco router is 192.168.1.253 at a particular site...
Each site has sonicwall to ISP internet. For this example, sonicwall is 192.168.1.254. DHCP is handled by sonicwall and default gateway for network is 192.168.1.254.
Is there anyway to have the default gateway change automatically should the internet go down at a remote site. For example, Internet goes out at the 1.x network. If I manually change the default gateway to 1.253, then devices would use MetroE to access Internet at main site plus all other devices over the MetroE.
I need this to happen automatically. I could make the internal MetroE cisco router as the default route but again, on the fly how would I route "unknown" traffic across the MetroE should the local Internet go down?