The Bible - Volume 1,
By A Customer
This review is from: Routing TCP/IP: v. 1: Authorized CCIE Preparation (CCIE Professional Development) (Hardcover)
In my opinion, this book is the bottom line as far as TCP/IP goes. Clear and detailed explanations of so many topics I've wondered about before, but have been glossed over by others, and indeed by Cisco's own training courses. It's the definitive reference book, and a godsend to anybody troubleshooting TCP/IP on cisco networks. And frankly, even if you're not using Cisco products you could do worse than to learn that bit extra about how TCP/IP actually works.
If you use TCP/IP with Cisco routers, you'd be foolish not to add this to your collection and read it thoroughly.
All I'm waiting for now is Volume II....!