RFC 1134 (rfc1134) - Page 2 of 38
Point-to-Point Protocol: A proposal for multi-protocol transmission of datagrams over Point-to-Point links
Alternative Format: Original Text Document
RFC 1134 PPP November 1989 REFERENCES ............................................ 37 AUTHOR'S ADDRESS ...................................... 38 Status of this Memo This memo defines a proposed protocol for the Internet community. This proposal is the product of the Point-to-Point Protocol Working Group of the Internet Engineering Task Force (IETF). Comments on this memo should be submitted to the IETF Point-to-Point Protocol Working Group chair by January 15, 1990. Comments will be reviewed at the February 1990 IETF meeting, with the goal of advancing PPP to draft standard status. Distribution of this memo is unlimited. Abstract The Point-to-Point Protocol (PPP) provides a method for transmitting datagrams over serial point-to-point links. PPP is composed of three parts: 1. A method for encapsulating datagrams over serial links. 2. An extensible Link Control Protocol (LCP). 3. A family of Network Control Protocols (NCP) for establishing and configuring different network-layer protocols. This document defines the encapsulation scheme, the basic LCP, and an NCP for establishing and configuring the Internet Protocol (IP) (called the IP Control Protocol, IPCP). The options and facilities used by the LCP and the IPCP are defined in separate documents. Control protocols for configuring and utilizing other network-layer protocols besides IP (e.g., DECNET, OSI) are expected to be developed as needed. 1. Introduction 1.1. Motivation In the last few years, the Internet has seen explosive growth in the number of hosts supporting TCP/IP. The vast majority of these hosts are connected to Local Area Networks (LANs) of various types, Ethernet being the most common. Most of the other hosts are connected through Wide Area Networks (WANs) such as X.25 style Public Data Networks (PDNs). Relatively few of these hosts are connected with simple point-to-point (i.e., serial) links. Yet, point-to-point links are among the oldest methods of data communications and almost Perkins
