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MAPOS 16 - Multiple Access Protocol over SONET/SDH with 16 Bit Addressing (RFC2175)

IP.com Disclosure Number: IPCOM000002733D
Original Publication Date: 1997-Jun-01
Included in the Prior Art Database: 2000-Sep-13
Document File: 5 page(s) / 11K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

K. Murakami: AUTHOR [+2]

Abstract

This document describes the protocol MAPOS 16, Multiple Access Protocol over SONET/SDH with 16 Bit Addressing, for transmitting network-protocol datagrams over SONET/SDH. The primary difference with MAPOS version 1 is that it has 16 bit address field that offers significant wide address space. It first describes the major differences between MAPOS and MAPOS 16 briefly. Then, it explains the header format and its 16 bit address format.

This text was extracted from a ASCII document.
This is the abbreviated version, containing approximately 25% of the total text.

Network Working Group K. Murakami

Request for Comments: 2175 M. Maruyama

Category: Informational NTT Laboratories

June 1997

MAPOS 16 - Multiple Access Protocol over

SONET/SDH with 16 Bit Addressing

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 MAPOS 16, a multiple access protocol for

transmission of network-protocol datagrams, encapsulated in HDLC

frames with 16 bit addressing, over SONET/SDH. The primary

difference with MAPOS version 1 is that it has 16 bit address field

that offers significant wide address space. 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 the protocol MAPOS 16, Multiple Access

Protocol over SONET/SDH with 16 Bit Addressing, for transmitting

network-protocol datagrams over SONET/SDH. The primary difference

with MAPOS version 1 is that it has 16 bit address field that offers

significant wide address space. It first describes the major

differences between MAPOS and MAPOS 16 briefly. Then, it explains the

header format and its 16 bit address format.

1. Introduction

MAPOS is a multiple access protocol for transmission of High-level

Datalink Control (HDLC) frames over the Synchronous Optical Network /

Synchronous Digital Hierarchy(SONET/SDH)[1][2][3][4]. It provides

multiple access capability to SONET/SDH, an inherently point-to-point

link.

MAPOS version 1[5] focuses on the frame format compatibility with the

conventional PPP[6], resulting with its narrow 8 bit address field.

In contrast to MAPOS version 1, MAPOS 16 has a 16 bit address space.

In this document, header format and its 16 bit format are described.

It also explains that 16 bit addressing has minimal influence on the

conventional MAPOS protocol family such as Node-Switch Protocol[7]

and Switch-Switch Protocol[8].

2. MAPOS 16 Frame Format

Like MAPOS version 1, MAPOS 16 framing is based on the HDLC-like

framing used in PPP-over-SONET/SDH, described in RFC-1662[6].

However, the address field is extended to 16 bits, and the control

field in the MAPOS version 1 is omitted for maintain the 32bit

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