Welcome to third major iteration of the CCNP certification! In the spring of 2006, Cisco Press came to me and told me, albeit quietly, that there was going to be a major revision of the CCNP certification exams. They then asked whether I would be interested in working on a command guide in the same fashion as my previous books for Cisco Press: the Cisco Networking Academy Program CCNA Command Quick Reference, and the CCNA Portable Command Guide. The original idea was to create a single-volume command summary for all four of the new CCNP exams. However, early on in my research, I quickly discovered that there was far too much information in the four exams to create a single volume—that would have resulted in a book that was neither ...

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