January 2002
Beginner
238 pages
6h 20m
English
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Chapter 1. Starting Simple
What Is IP Routing?
A young woman boards a commuter train in a small town in Quebec, changes trains a couple of times, and, a day later, arrives in New York City. She walks up the stairs from the platform into Grand Central Terminal, looks up above her head, and, for the first time, sees the constellations, hundreds of feet above on the ceiling.
A high school student in New Zealand downloads maps of Sri Lanka from a local (Sri Lankan) web site. The maps show the natural features, the political boundaries, the flora and fauna, rainfall, ancient kingdoms, languages, and religions. The download takes thousands of IP packets that find their way from Sri Lanka to the student’s PC in New Zealand.
Just as our Canadian friend changed trains at several stations along the way, the IP packets from the Sri Lankan web site may have bounced through dozens of routers before arriving at the student’s machine.
The routing of IP packets in an IP network is the set of tasks required to move an IP packet from router to router to its destination, as specified in the IP header field. This book is about the set of tasks that accomplish IP routing.
There are similarities in routing concepts between IP networks, transportation systems, and mail delivery operations. Throughout this text, we will often illustrate IP routing concepts by comparison with these other systems.
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.