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Church Of The
Swimming Elephant

RFC 1661 Connected: An Internet Encyclopedia
RFC 1661

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RFC 1661

RFC 1661 Network Working Group
Request for Comments: 1661
STD: 51
Obsoletes: 1548
Category: Standards Track

W. Simpson, Editor
July 1994

The Point-to-Point Protocol (PPP)

Status of this Memo

This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited.


The Point-to-Point Protocol (PPP) provides a standard method for transporting multi-protocol datagrams over point-to-point links. PPP is comprised of three main components:

  1. A method for encapsulating multi-protocol datagrams.

  2. A Link Control Protocol (LCP) for establishing, configuring, and testing the data-link connection.

  3. A family of Network Control Protocols (NCPs) for establishing and configuring different network-layer protocols.

This document defines the PPP organization and methodology, and the PPP encapsulation, together with an extensible option negotiation mechanism which is able to negotiate a rich assortment of configuration parameters and provides additional management functions. The PPP Link Control Protocol (LCP) is described in terms of this mechanism.

Table of Contents

Next: 1. Introduction

Connected: An Internet Encyclopedia
RFC 1661


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