RFC 2174 (rfc2174) - Page 1 of 22

A MAPOS version 1 Extension - Switch-Switch Protocol

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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.



Murakami & Maruyama          Informational
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