User`s guide

XSR User’s Guide 103
6
Configuring PPP
Overview
The Point-to-Point Protocol (PPP), referenced in RFC-1616, is a standard
method for transporting multi-protocol datagrams over point-to-point links.
PPP defines procedures to assign and manage network addresses,
asynchronous and synchronous encapsulation, link configuration, link
quality testing, network protocol multiplexing, error detection, and option
negotiation for network-layer address and data-compression negotiation.
PPP provides all these functions through its three main components:
 An extensible Link Control Protocol (LCP) for establishing,
configuring, and testing the data-link connection.
 A method for encapsulating multi-protocol datagrams.
 A family of Network Control Protocols (NCPs) for establishing and
configuring different network-layer protocols.
When negotiation is complete, PPP becomes the pipe that carries the network
layer protocol data units (PDUs) in the information field of the PPP packet.
PPP offers high performance and error-free transmission of user traffic from
sender to receiver over a link.
PPP Features
The XSR PPP software module offers the following features:
 IP datagram encapsulation over a data link connection
 Synchronous and asynchronous communication modes
 Multilink Protocol (MP) as defined by RFC-1990
 IPCP Network Control Protocol