Chapter 3. TCP/IP Over ATM
This chapter compares the main architectures for an end-to-end DSL architecture. Because DSL depends on ATM for switching beyond the DSL network itself (that is, through the local loop and into the network cloud), and because the predominant routing protocol in today's internetworking is TCP/IP, this chapter is most properly titled “TCP/IP Over ATM.” This chapter starts with an overview of useful functionalities for DSL networks, such as security, and the protocols that enable those functionalities, such as authentication, authorization, and accounting (AAA). The chapter continues with sections for each of the six major architectures, including the most commonly deployed architecture, Point-to-Point Protocol over Ethernet. ...
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