The topology is as follows:
- R1, R2 and R3 run EIGRP AS 100 on all interfaces. Auto-summary is disabled
- R1 is the Internet facing router and generates a default route via EIGRP
- R1 connects two internal networks, 192.168.0.0 and 192.168.1.0.
- R2 connects two internal networks, 192.168.2.0 and 192.168.3.0.