I am assisting a customer with configuring their Cisco 1811 for internet and site to site communication over a Metro Ethernet circuit - basically it is a layer 2 connection at each site that connects them together.
Each site has its own separate class C address range 192.168.1.0, 192.168.2.0 and 192.168.3.0. I set an interface address on each side whereby the last octet corresponds with the network it is assigned to so the FE/0 address for the 192.168.1.0 network is 172.16.1.1, the interface address for the 192.168.2.1 network is 172.16.1.2 and the interface address for the 192.168.3.1 network is, 172.16.1.3.
I have route statements configured on each side to route traffic accordingly depending on the location. For example, from network 192.168.1.0 to get to the 192.168.2.0 network I have added a static route that shows up in the routing table as "S 192.168.2.0/24 [1/0] via 172.16.1.2"
Everything works great until I try to configure and connect the WAN port for internet traffic. I tried to set it as the default route, but it keeps taking precedence for all of the traffic and even the internal traffic that I have static routes configured for do not work.
Can somebody assist me with what I am trying to accomplish? I need to know the proper way to configure the WAN internet connection so it is just used for internet traffic and not the site to site traffic.