September 2008
Beginner
456 pages
11h 41m
English
Content preview from Sams Teach Yourself TCP/IP in 24 Hours, Fourth EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Classless Routing
As you learned in Hours 4 and 5, the TCP/IP routing system is designed around the concept of a network ID, which is dependent on the address class (A, B, or C) of the IP address. As you also learned in Hour 5, the address class system has some limitations and is sometimes an inefficient method for assigning blocks of addresses to a single provider. Classless Internet Domain Routing (CIDR) offers an alternative method for assigning addresses and determining routes. (See the section titled “Classless Internet Domain Routing” in Hour 5.) The CIDR system specifies a host through an address/mask pair, such as 204.21.128.0/17. The mask number represents the number of address bits associated with the network ID.
The CIDR system offers ...
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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.