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MAPOS/PPP Tunneling mode (RFC3186)

IP.com Disclosure Number: IPCOM000006126D
Original Publication Date: 2001-Dec-01
Included in the Prior Art Database: 2019-Feb-13
Document File: 14 page(s) / 17K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

S. Shimizu: AUTHOR [+3]

Related Documents

10.17487/RFC3186: DOI

Abstract

This document specifies tunneling configuration over MAPOS (Multiple Access Protocol over SONET/SDH) networks. Using this mode, a MAPOS network can provide transparent point-to-point link for PPP over SONET/SDH (Packet over SONET/SDH, POS) without any additional overhead. This memo provides information for the Internet community.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 15% of the total text.

Network Working Group S. Shimizu Request for Comments: 3186 T. Kawano Category: Informational K. Murakami NTT Network Innovation Labs. E. Beier DeTeSystem December 2001

MAPOS/PPP Tunneling mode

Status of this Memo

This memo provides information for the Internet community. It does not specify an Internet standard of any kind. Distribution of this memo is unlimited.

Copyright Notice

Copyright (C) The Internet Society (2001). All Rights Reserved.

IESG Note

This memo documents a way of tunneling PPP over Sonet over MAPOS networks. 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 specifies tunneling configuration over MAPOS (Multiple Access Protocol over SONET/SDH) networks. Using this mode, a MAPOS network can provide transparent point-to-point link for PPP over SONET/SDH (Packet over SONET/SDH, POS) without any additional overhead.

1. Introduction

MAPOS [1][2] frame is designed to be similar to PPP over SONET/SDH (Packet over SONET/SDH, POS)[3][4] frame (Figure 1).

Shimizu, et al. Informational [Page 1]

RFC 3186 MAPOS/PPP Tunneling mode December 2001

a) MAPOS frame header (version 1) +-----------+-----------+-----------+-----------+ | Address | Control | Protocol | | 8 bits | fixed,0x03| 16 bits | +-----------+-----------+-----------+-----------+

b) MAPOS frame header (MAPOS 16) +-----------+-----------+-----------+-----------+ | Address | Protocol | | 16bits | 16 bits | +-----------+-----------+-----------+-----------+

c) PPP frame header +-----------+-----------+-----------+-----------+ | Address | Control | Protocol | | fixed,0xFF| fixed,0x03| 16 bits | +-----------+-----------+-----------+-----------+

Figure 1. Header similarity of MAPOS frame and POS frame

This means that a MAPOS network can easily carry POS frames with no additional header overhead by rewriting only 1 or 2 octets. PPP tunneling configuration over MAPOS networks (MAPOS/PPP tunneling mode) provides for efficient L2 multiplexing by which users can share the cost of high speed long-haul links.

This document specifies MAPOS/PPP tunneling mode. In this mode, a MAPOS network provides a point-to-point link for those who intend to connect POS equipment. Such link is established within a MAPOS switch, or between a pair of MAPOS switches that converts between POS header and MAPOS header for each L2 frame.

Chapter 2 describes the specification in two parts. First part is user network interface (UNI) specification and the second part is operation, administration, management and provisioning (OAM&P) description. Other issues such as congestion avoidance, end-to-end fairness control are out of scope of this document.

Implementation issues are discussed in Chapter 3. Security considerations are noted in Chapter 4.

Shimizu, et al. Informational [Page 2]

RFC 3186 MAPOS/PPP Tunneling mode December 2001...

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