Once you have gone through the effort to put video, audio, and data into IP packets, chances are that you are going to want to move the packets from one network to another. One of the great strengths of IP networking is the huge variety of different technologies that have been successfully used to move packets over long and short distances. We begin this chapter with a discussion of some of the major technologies that are used to transport packets. We will then discuss several factors that need to be considered when evaluating transport technologies. A discussion of some of the impairments that can occur on networks follows next. The chapter concludes with a discussion of the Internet as a transport medium, and a brief look ...

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