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Chapter 32. Using Point-to-Point Protocol Interfaces
This chapter describes how to use the Point-to-Point Protocol for interfaces on the
device. Sections in this chapter include:
v “PPP Overview”
v “The PPP Link Control Protocol (LCP)” on page 451
v “PPP Authentication Protocols” on page 455
v “Using AAA with PPP” on page 460
v “The PPP Network Control Protocols” on page 460
v “Using and Configuring Virtual Connections” on page 463
See “Chapter 34. Using the Multilink PPP Protocol” on page 509 and “Chapter 35.
Configuring and Monitoring Multilink PPP Protocol (MP)” on page 515 for
information about using the Multilink PPP Protocol.
PPP Overview
PPP provides a method for transmitting protocol datagrams at the Data Link Layer
over serial point-to-point links. PPP provides the following services:
v Link Control Protocol (LCP) to establish, configure, and test the link connection.
v Encapsulation protocol for encapsulating protocol datagrams over serial
point-to-point links.
v Authentication protocols (APs) to validate the identity of a peer (remote) unit, and
to submit your own identity to the peer for validation.
v Network Control Protocols (NCPs) for establishing and configuring different
network layer protocols. PPP allows the use of multiple network layer protocols.
Figure 26 on page 450 shows some examples of point-to-point serial links.
© Copyright IBM Corp. 1994, 1998 449
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