Russ White: To Alvaro Retana, Don Slice, James Ng, Denise Fishburne, Danny McPherson, Donnie Savage, and all those I’ve worked with over the years at Cisco, Verisign, VCE, and Ericsson—thanks for taking the time and trouble to help me learn the many different aspects of network design and architecture. Without the help and guidance of mentors and sounding boards, I wouldn’t have a clue about how to design a network.

To my children—thanks for the insanity I’ve inherited. A little insanity is useful when dealing with something as strange as network architecture.

To Denise Donohue—thanks for sticking with this project. Books are always a bigger project than they seem at the beginning and a smaller project than they seem at the end. ...

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