We have multiple sites all inter-connected with a private WAN which we control the routing. Basically we redistribute all internal networks to the WAN using EIGRP.
We are now looking to add another layer of redundancy for Internet access. In other words, if one of the sites looses Internet for whatever reason (firewall issue, ISP issue, or whatever the case is), then we are looking to traverse to the Internet from another site across the WAN.
The current EIGRP setup on the WAN facing device is at the primary site is :
router eigrp 100
network 192.168.1.0 0.0.0.255
network 192.168.2.0 0.0.0.255
network 192.168.3.0 0.0.0.255
I am thinking of adding the following line:
network 0.0.0.0 0.0.0.0
which should (in theory) redistribute the default route to the WAN which is the Internet access. So if any other site looses the Internet, EIGRP should route this traffic to the primary site and off to the Internet.
Does that make any sense?