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A MAPOS version 1 Extension - Switch-Switch Protocol (RFC2174)

IP.com Disclosure Number: IPCOM000002732D
Original Publication Date: 1997-Jun-01
Included in the Prior Art Database: 2000-Sep-13
Document File: 18 page(s) / 44K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

K. Murakami: AUTHOR [+2]

Abstract

This document describes a MAPOS version 1 extension, SSP (Switch Switch Protocol). MAPOS is a multiple access protocol for transmission of network-protocol packets, encapsulated in High-Level Data Link Control (HDLC) frames, over SONET/SDH. In MAPOS network, a SONET switch provides the multiple access capability to end nodes. SSP is a protocol of Distance Vector family and provides unicast and broadcast/multicast routing for multiple SONET switch environment.

This text was extracted from a ASCII Text document.
This is the abbreviated version, containing approximately 7% of the total text.

Network Working Group K. Murakami

Request for Comments: 2174 M. Maruyama

Category: Informational NTT Laboratories

June 1997

A MAPOS version 1 Extension - Switch-Switch Protocol

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.

Authors' Note

This memo documents a MAPOS (Multiple Access Protocol over SONET/SDH)

version 1 extension, Switch Switch Protocol which provides dynamic

routing for unicast, broadcast, and multicast. This document is NOT

the product of an IETF working group nor is it a standards track

document. It has not necessarily benefited from the widespread and

in depth community review that standards track documents receive.

Abstract

This document describes a MAPOS version 1 extension, SSP (Switch

Switch Protocol). MAPOS is a multiple access protocol for

transmission of network-protocol packets, encapsulated in High-Level

Data Link Control (HDLC) frames, over SONET/SDH. In MAPOS network, a

SONET switch provides the multiple access capability to end nodes.

SSP is a protocol of Distance Vector family and provides unicast and

broadcast/multicast routing for multiple SONET switch environment.

1. Introduction

This document describes an extension to MAPOS version 1, Switch

Switch Protocol, for routing both unicast and broadcast/multicast

frames. MAPOS[1], Multiple Access Protocol over SONET (Synchronous

Optical Network) / SDH (Synchronous Digital Hierarchy) [2][3][4][5],

is a link layer protocol for transmission of HDLC frames over

SONET/SDH. A SONET switch provides the multiple access capability to

each node. SSP is a dynamic routing protocol designed for an

environment where a MAPOS network segment spans over multiple

switches. It is a protocol of Distance Vector family. It provides

both unicast and broadcast/multicast routing. First, this document

describes the outline of SSP. Next, it explains unicast and

broadcast/multicast routing algorithms. Then, it describes the SSP

protocol in detail.

2. Constraints in Designing SSP

SSP is a unified routing protocol supporting both unicast and

broadcast/multicast. The former and the latter are based on the

Distance Vector [6][7] and the spanning tree[8] algorithm,

respectively. In MAPOS version 1, a small number of switches is

assumed in a segment. Thus, unlike DVMRP(Distance Vector Multicast

Routing Protocol)[8], TRPB(Truncated Reverse Path Broadcasting) is

not supported for simplicity. This means that multicast frames are

treated just the same as broadcast frames and are delivered to every

node.

In MAPOS version 1, there are two constraints regarding design of the

broadcast/multicast routing algorithm;

(1) there is no source addr...