Continuing my expedition in to trying to learn EIGRP and other routing techniques in GNS3, I now have another theoretical network, depicted below:
Everything in the red area is a mystery. We do not have access to configure it, we only know how it is connected. We also know that the red area routers only support static routes, and have the corresponding router in the green area set as their gateway of last resort. We cannot change anything in this area.
The blue/lilac area just does layer two switching. Nothing fancy, and cannot be changed.
I'm working in the green area. Both of these routers have EIGRP configured with their directly connected networks, and auto-summary disabled. These two nodes can see each other, and mutually identify as EIGRP neighbours. Thanks to EIGRP, A-R2 can ping B-R2.
The question then, is how can I have these two routers (A-R1 and B-R1) advertise the networks that are behind A-R2 and B-R2 (192.168.1.0/24, 192.168.2.0/24, 10.0.0.0/22 and 10.0.32.0/19), so that clients on each of the aforementioned networks can communicate (e.g. PC at 10.0.32.5 can ping a PC at 192.168.1.5)?
Any solution should be scalable. I should be able to add another router in the green area, that then handles routing to an additional router in the red area (replicating to C, D, E, F, etc..).
Remember though, that nothing in the red or blue areas can be changed by me.
I have tried simply adding those under the EIGRP network list of A-R1 and A-R2 for the respective router, but that is not the solution here.
Target hardware is Cisco 3660 series routers running C3660-IK9O3S-M version 12.4(13b).