Scenario 6-1: EBGP and IBGP
Configure the four-router topology in Figure 6-2 for IBGP and EBGP. OSPF is configured between R1 and R2, and to ensure a loop-free topology, do not disable synchronization on any router. Ensure that the loopback addresses on R1 (131.108.2.0–131.108.5.0/24) and R2 (131.108.5.0–131.108.7.0) are reachable from R3 and R4.
Figure 6-2. IBGP/EBGP
In this scenario, you configure BGP on four routers and ensure that all BGP peers have remote IP routing entries. R1 and R2 are running OSPF across the Ethernet subnet 131.108.1.0/24. Also, notice that this network contains a potential routing loop, so you discover how BGP helps you ...
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