The book includes debug ip bgp outputs that look like ancient Greek. Study them. The CCIE lab does not have a GUI; you must read debug output to see why a route was rejected (AS loop, Next-hop inaccessible, Policy rejection).
For the veteran engineer, Volume II is a security blanket. When a strange routing loop allows traffic from AS 100 to reach AS 300 via AS 500 instead of your direct link, you pull Volume II off the shelf, turn to the "AS-Path Manipulation" chapter, and remind yourself of the attribute length versus content . If Routing TCP/IP, Volume I is your foundation, Volume II is your fortress. Routing TCP IP- Volume II -CCIE Professional Development
Jeff Doyle and Jennifer DeHaven Carroll did not write a book to help you pass a test; they wrote a reference to help you keep the world connected. The book includes debug ip bgp outputs that
Most candidates master BGP. Few master the show ip mroute output. Volume II dedicates a full chapter to reading the (S,G) and (*,G) entries. If you memorize the flags (J, P, Pr, F, L, K), you will pass the lab while others fail. For the veteran engineer, Volume II is a security blanket
While Volume I focused on interior gateway protocols (IGPs) like OSPF and EIGRP, Volume II is where the theory meets the global internet. It is the advanced practitioner’s guide to the protocols that hold the world’s data together: