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Tunneling IPX traffic through IP networks (RFC1234)

IP.com Disclosure Number: IPCOM000002049D
Original Publication Date: 1991-Jun-01
Included in the Prior Art Database: 2003-Mar-28
Document File: 7 page(s) / 12K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

D. Provan: AUTHOR

Abstract

Internet Packet eXchange protocol (IPX) is the internetwork protocol used by Novell's NetWare protocol suite. For the purposes of this paper, IPX is functionally equivalent to the Internet Datagram Protocol (IDP) from the Xerox Network Systems (XNS) protocol suite [1]. This memo describes a method of encapsulating IPX datagrams within UDP packets [2] so that IPX traffic can travel across an IP internet [3].

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 23% of the total text.

Network Working Group                                          D. Provan

Request for Comments: 1234                                  Novell, Inc.

                                                               June 1991

               Tunneling IPX Traffic through IP Networks

Status of this Memo

   This memo describes a method of encapsulating IPX datagrams within

   UDP packets so that IPX traffic can travel across an IP internet.

   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.

Introduction

   Internet Packet eXchange protocol (IPX) is the internetwork protocol

   used by Novell's NetWare protocol suite.  For the purposes of this

   paper, IPX is functionally equivalent to the Internet Datagram

   Protocol (IDP) from the Xerox Network Systems (XNS) protocol suite

   [1].  This memo describes a method of encapsulating IPX datagrams

   within UDP packets [2] so that IPX traffic can travel across an IP

   internet [3].

   This RFC allows an IPX implementation to view an IP internet as a

   single IPX network.  An implementation of this memo will encapsulate

   IPX datagrams in UDP packets in the same way any hardware

   implementation might encapsulate IPX datagrams in that hardware's

   frames.  IPX networks can be connected thusly across internets that

   carry only IP traffic.

Packet Format

   Each IPX datagram is carried in the data portion of a UDP packet.

   All IP and UDP fields are set normally.  Both the source and the

   destination ports in the UDP packet should be set to the UDP port

   value allocated by the Internet Assigned Numbers Authority for the

   implementation of this encapsulation method.

   As with any UDP application, the transmitting party has the option of

   avoiding the overhead of the checksum by setting the UDP checksum to

   zero.  Since IPX implementations never use the IPX checksum to guard

   IPX packets from damage, UDP checksumming is highly recommended for

   IPX encapsulation.

Provan                                                          [Page 1]

RFC 1234                       IPX on IP                       June 1991

   +---------------------+------------+-------------------------------+

   |                     |            |             |                 |

   |     IP Header       | UDP Header | IPX Header  | IPX packet data |

   | (20 or more octets) | (8 octets) | (30 octets) |      ®..