5. Choosing the Right Access Protocol

Access protocols can provide features such as automatic IP addressing, parameters for boot purposes, and enable a framework for authorization and authentication into service provider networks. Two examples, which are the focus of this chapter, are PPP over Ethernet (PPPoE) and Dynamic Host Configuration Protocol (DHCP). Strictly speaking, DHCP encompasses more functions than PPP. DHCP is a protocol to allocate IP addresses, Maximum Transmission Unit (MTU), communicate a TFTP server address, or any other parameters that are needed to prime a client when it boots up. It is also a protocol that runs on top of a multiaccess network such as Ethernet. The session part is generally called IP over Ethernet (IPoE ...

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