Subnetting and VLSM
In this chapter, you will
• Learn about subnetting networks
• Learn some subnetting shortcuts
• Understand the difference between classful and classless addressing
• Learn about Variable Length Subnet Masks (VLSMs)
In Chapter 4 you learned the basics of TCP/IP addressing. In this chapter, you’ll learn how to divide one network address range into multiple network ranges, or subnets, so that you can assign each address range to a separate network (subnet) in your internetwork (network made up of multiple networks).
You may need to use multiple networks as a result of your business operating in several different physical locations, for example. Or, if you’re working in one location, you may want to cut ...