Start with a Horse carried letter, get to the Internet

Cisco First-Step books are exactly as the name implies. This book assumes that you have zero experience with what routing is, how it works, what's the addressing structure or anything else. It starts off with a discussion on how to set up a snail mail system using horses, kind of like the Post Office had to use in its early days. How would you address an envelope? There is a convention that says the return address goes in the top left hand corner. But it doesn't have to be there, if we all agreed, it could be where ever we liked. But it has to be somewhere.

This is the level of detail of where the book begins. After that, it goes on to a highway system. You want to mail a letter from San Jose to Chicago, what kind of addressing do you need, where does the letter stop on its way. Finally, these conventions become standardized, and we give them names. The names just happen to be those of the computer protocols - surprise, surprise.

By the end of the book he is discussing Border Gateway Protocols, Multicast and things like that. By then you understand that the Post Office where you started doesn't do multicast -- they don't have copiers. By then you understand how the internet addressing scheme works. You clearly understand routing and what a router does. You're ready to move on to the next step.

Other Reviews

• Leaves a bit to be desired
• Routing First-Step may be Second-Step
• More than expected.
• Start with a Horse carried letter, get to the Internet