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Multiprotocol Interconnect on X.25 and ISDN in the Packet Mode (RFC1356)

IP.com Disclosure Number: IPCOM000002180D
Original Publication Date: 1992-Aug-01
Included in the Prior Art Database: 2000-Sep-12
Document File: 12 page(s) / 30K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

A. Malis: AUTHOR [+3]

Abstract

This document specifies the encapsulation of IP and other network layer protocols over X.25 networks, in accordance and alignment with ISO/IEC and CCITT standards. It is a replacement for RFC 877, "A Standard for the Transmission of IP Datagrams Over Public Data Networks" [1].

This text was extracted from a ASCII document.
This is the abbreviated version, containing approximately 9% of the total text.

Network Working Group A. Malis

Request for Comments: 1356 BBN Communications

Obsoletes: RFC 877 D. Robinson

Computervision Systems Integration

R. Ullmann

Process Software Corporation

August 1992

Multiprotocol Interconnect

on X.25 and ISDN in the Packet Mode

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

This document specifies the encapsulation of IP and other network

layer protocols over X.25 networks, in accordance and alignment with

ISO/IEC and CCITT standards. It is a replacement for RFC 877, "A

Standard for the Transmission of IP Datagrams Over Public Data

Networks" [1].

It was written to correct several ambiguities in the Internet

Standard for IP/X.25 (RFC 877), to align it with ISO/IEC standards

that have been written following RFC 877, to allow interoperable

multiprotocol operation between routers and bridges over X.25, and to

add some additional remarks based upon practical experience with the

specification over the 8 years since that RFC.

The substantive change to the IP encapsulation is an increase in the

allowed IP datagram Maximum Transmission Unit from 576 to 1600, to

reflect existing practice.

This document also specifies the Internet encapsulation for

protocols, including IP, on the packet mode of the ISDN. It applies

to the use of Internet protocols on the ISDN in the circuit mode only

when the circuit is established as an end-to-end X.25 connection.

Acknowledgements

RFC 877 was written by J. T. Korb of Purdue University, and this

document follows that RFC's format and builds upon its text as

appropriate. This document was produced under the auspices of the IP

over Large Public Data Networks Working Group of the IETF.

1. Conventions

The following language conventions are used in the items of

specification in this document:

o MUST -- the item is an absolute requirement of the specification.

MUST is only used where it is actually required for interoperation,

not to try to impose a particular m...