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ISO Transport Class 2 Non-use of Explicit Flow Control over TCP RFC1006 extension (RFC1859)

IP.com Disclosure Number: IPCOM000004115D
Original Publication Date: 1995-Oct-01
Included in the Prior Art Database: 2000-Sep-13
Document File: 7 page(s) / 13K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

Y. Pouffary: AUTHOR

Abstract

Status of this Memo

This text was extracted from a ASCII Text document.
This is the abbreviated version, containing approximately 22% of the total text.

Network Working Group Y. Pouffary

Request For Comments: 1859 Digital Equipment Corporation

Category: Informational October 1995

ISO Transport Class 2 Non-use of Explicit Flow Control over TCP

RFC1006 extension

Status of this Memo

This memo provides information for the Internet community. This memo

does not specify an Internet standard of any kind. Distribution of

this memo is unlimited.

Table of Contents

1. Introduction - General recommendations.......................2

2. The protocol.................................................3

2.1 TCP service as a Network Service - The Primitives...........3

2.2 Connection Establishment....................................4

2.3 Data Transfer...............................................5

2.4 Connection Release..........................................6

3. Packet Format................................................6

4. DIGITAL DECnet over TCP/IP...................................8

Acknowledgements................................................9

References......................................................9

Author's Address................................................9

1. Introduction - General recommendations

This document is an extension to STD35, RFC1006, a standard for the

Internet community. The document does not duplicate the protocol

definitions contained in RFC1006 and in International Standard ISO

8073. It supplements that information with the description of how to

implement ISO Transport Class 2 Non-use of Explicit Flow Control on

top of TCP.

The document should be used in conjunction with the RFC1006 and ISO

8073.

The RFC1006 standard defines how to implement ISO 8073 Transport

Class 0 on top of TCP. This memo defines how to implement ISO 8073

Transport Class 2 Non-use of Explicit Flow Control on top of TCP.

Like ISO Transport Class 0, Class 2 Non-use of Explicit Flow Control

provides basic connection with minimal overhead.

A Transport protocol class is selected for a particular Transport

connection based upon the characteristics of the lower layers and the

requirements of the upper layer. Use of class 2 Non-use of Explicit

Flow Control is suitable when the use of separate virtual data

channels for normal and expedited Data are desirable or when an

explicit disconnection of the Transport connection is desirable.

Hosts which choose to implement this extension are expected to listen

on the well-known TCP port number 399.

It is recommended that the well-known RFC1006 TCP port 102 not be

used. This recommendation is done to minimise impact to an existing

RFC1006 implementation.

The memo also describes the use of this extension within the DIGITAL

Network Architecture (DNA).

2. The protocol

The protocol specified by this memo is fundamentally equivalent to

the protocol ISO 8073 Transport Class 2 N...