Appendix C. Answers to Troubleshooting Exercises
Chapter 2
1. Routers R1 and R3 in Figure 2-31 can ping each other’s loopback 0 interfaces. The network operator configures an IBGP peering between both routers, as shown in Example 2-27. However, the IBGP session is not getting established. The command bgp log-neighbor-changes was configured on both routers, and the output from the show logging and the show ip bgp neighbors commands is shown in Example 2-28. What is likely to be preventing the IBGP peering from coming up?
Figure 2-31 Topology for Troubleshooting Exercise 1
Example 2-27 Configuring an IBGP Peering Between R1 and R3
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