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The PPP DECnet Phase IV Control Protocol (DNCP)
RFC 1376

Document type: RFC - Proposed Standard (November 1992; No errata)
Obsoleted by RFC 1762
Document stream: IETF
Last updated: 2013-03-02
Other versions: plain text, pdf, html

IETF State: (None)
Document shepherd: No shepherd assigned

IESG State: RFC 1376 (Proposed Standard)
Responsible AD: (None)
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Network Working Group                                           S. Senum
Request for Comments: 1376                   Network Systems Corporation
                                                           November 1992

            The PPP DECnet Phase IV Control Protocol (DNCP)

Status of this Memo

   This RFC specifies an IAB standards track protocol for the Internet
   community, and requests discussion and suggestions for improvements.
   Please refer to the current edition of the "IAB Official Protocol
   Standards" 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 approached 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.

Senum                                                           [Page 1]
RFC 1376                        PPP DNCP                   November 1992

2.  Overview Of Phase IV DNA Protocols

   The Phase IV DNA protocols which act as data link clients are:

      o  DNA Phase IV Routing
         The Phase IV Digital Network Architecture (DNA) Routing
         protocol is a network layer protocol providing services similar
         to that of DoD IP.  It routes messages in Phase IV DECnet
         networks and manages the packet flow.  The complete definition
         of the DNA Phase IV Routing protocol can be found in [2].

      o  DNA System Console
         The Digital Network Architecture (DNA) System Console protocol
         is a maintenance protocol providing low level access to a
         system for the functions of:

          .  Identify processor
          .  Read data link counters
          .  Boot system
          .  Console carrier (a general purpose i/o channel)

         The complete definition of the DNA System Console protocol can
         be found in [3].

      o  Digital Customer Use
         The Digital Customer Use protocol type is a value reserved for
         use by Digital customers.  It allocates a type for private use
         which will not conflict with Digital or other vendor protocols.

      o  DNA Diagnostics
         The Digital Network Architecture (DNA) Diagnostics protocol
         type is reserved to allow diagnostic software communications in
         parallel with other data link clients.

      o  DNA Naming Service (DNS)
         The Digital Network Architecture Naming Service (DNS) provides
         a distributed naming service.  It allows clients to register
         named objects and to bind a set of attributes to the objects in
         a distributed database.

      o  DNA Time Service (DTS)
         The Digital Network Architecture Time Service (DTS) is a
         protocol providing global clock synchronization in a
         distributed environment.

      o  DNA Load/Dump
         The Digital Network Architecture (DNA) Load/Dump protocol is a
         maintenance protocol for copying the contents of processor

Senum                                                           [Page 2]
RFC 1376                        PPP DNCP                   November 1992

         memory to or from a remote system.  For example, a system
         manager can load an operating system into an unattended, remote
         system.  The complete definition of the Phase IV DNA Load/Dump
         protocol can be found in [3].

      o  DNA Experimental Use
         The Digital Network Architecture (DNA) Experimental Use
         protocol type allows Digital experimental protocols to share a
         data link with other data link clients.  It is for use by
         Digital Equipment Corporation only.

      o  DNA Communications Test
         The Digital Network Architecture (DNA) Communications Test
         protocol is a maintenance protocol for testing the data link

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