RFC 1762 (rfc1762) - Page 1 of 7

The PPP DECnet Phase IV Control Protocol (DNCP)

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Network Working Group                                           S. Senum
Request for Comments: 1762                                     DigiBoard
Obsoletes: 1376                                               March 1995
Category: Standards Track


            The PPP DECnet Phase IV Control Protocol (DNCP)

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.

Abstract

   The Point-to-Point Protocol (PPP) [1] provides a standard method of
   encapsulating Network Layer protocol information over point-to-point
   links.  PPP also defines an extensible Link Control Protocol, and
   proposes a family of Network Control Protocols (NCPs) for
   establishing and configuring different network-layer protocols.

   This document defines the NCP for establishing and configuring
   Digital's DNA Phase IV Routing protocol (DECnet Phase IV) over PPP.
   This document applies only to DNA Phase IV Routing messages (both
   data and control), and not to other DNA Phase IV protocols (MOP, LAT,
   etc).

1.  Introduction

   There are two basic approaches to running the DNA Phase IV Routing
   protocol over a serial line:

   1. The approach that several router vendors have taken which is to
      treat the serial link as an Ethernet, using the same data and
      control messages an Ethernet would use.

   2. The approach defined by Digital, which uses DDCMP and slightly
      different control messages.

   This document will define a method that uses the first approach.








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