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Dynamically Switched Link Control Protocol (RFC1307)

IP.com Disclosure Number: IPCOM000002127D
Original Publication Date: 1992-Mar-01
Included in the Prior Art Database: 2000-Sep-12
Document File: 10 page(s) / 22K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

J. Young: AUTHOR [+2]

Abstract

This memo describes an experimental protocol developed by a project team at Cray Research, Inc., in implementing support for circuit- switched T3 services. The protocol is used for the control of network connections external to a host, but known to the host. It is documented here for the benefit of others who may wish to perform further research.

This text was extracted from a ASCII document.
This is the abbreviated version, containing approximately 12% of the total text.

Network Working Group J. Young

Request for Comments: 1307 A. Nicholson

Cray Research, Inc.

March 1992

Dynamically Switched Link Control Protocol

Status of this Memo

This memo defines an Experimental Protocol for the Internet

community. Discussion and suggestions for improvement are requested.

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 memo describes an experimental protocol developed by a project

team at Cray Research, Inc., in implementing support for circuit-

switched T3 services. The protocol is used for the control of

network connections external to a host, but known to the host. It is

documented here for the benefit of others who may wish to perform

further research.

While working with circuit-switched T3 networks, developers at Cray

Research, Inc., defined a model wherein a host would generate control

messages for a network switch. This work is described in RFC 1306,

"Experiences Supporting By-Request Circuit-Switched T3 Networks". In

order to simplify the model it was decided that the inconsistencies

of switch control should be hidden from the host generating the

control messages. To that end, a protocol was defined and

implemented. This RFC documents the Dynamically Switched Link

Control Protocol (DSLCP), which is used for creation and control of

downstream network links by a host.

1.0 INTRODUCTION

The Dynamically Switched Link Control Protocol (DSLCP) allows a host

with knowledge of a special downstream network link to issue messages

to control the status of that link.

This document describes the functions of the DSLCP to control

external network connections.

1.1 Motivation

Circuit Switched Networks are becoming available to the Internet

community. These networks are made available by requesting a

connection through a switch. Normally circuit switched network links

are disconnected, and their prohibitive cost suggests that it is very

costly to leave them connected at all times.

Internet users and hosts wish to send data over a circuit switched

networks, but only connect the network links when a transport

connection is to be established. While it would be possible to use

packet routers to identify the need for switching a connection on and

off, only the transport provider can p...