Here’s a Packet Tracer 6 lab I created that tests a bunch of things outside just OSPF. Keep in mind that all the 1941 routers use the HWIC-4ESW to provide four switching ports. It’s important to remember that this is really just a switch attached to the router. You will have to find a way of routing traffic off the switch to the rest of the network.
You will need to be able to ping the router’s “router-id” from anywhere on the network.
I’ve included a picture what the 1941 routers physically look like:
Just for good measure here is the backbone router. I needed to add a NM-2FE2W Module. It provided me with two Fast-Ethernet interfaces which allowed me to have up to 4 connections on each backbone router.
Here’s the OSPF-Multi-area lab with Before and After Example. I’ve also included all the commands I put into the routers.