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Pseudo Wire Emulation Edge-to-Edge (PWE3) Architecture (RFC3985)

IP.com Disclosure Number: IPCOM000088363D
Original Publication Date: 2005-Mar-01
Included in the Prior Art Database: 2005-Mar-04
Document File: 43 page(s) / 95K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

S. Bryant: AUTHOR [+4]

Abstract

This document describes an architecture for Pseudo Wire Emulation Edge-to-Edge (PWE3). It discusses the emulation of services such as Frame Relay, ATM, Ethernet, TDM, and SONET/SDH over packet switched networks (PSNs) using IP or MPLS. It presents the architectural framework for pseudo wires (PWs), defines terminology, and specifies the various protocol elements and their functions.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 3% of the total text.

Network Working Group                                     S. Bryant, Ed.

Request for Comments: 3985                                 Cisco Systems

Category: Informational                                     P. Pate, Ed.

                                                 Overture Networks, Inc.

                                                              March 2005

         Pseudo Wire Emulation Edge-to-Edge (PWE3) Architecture

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 (2005).

Abstract

   This document describes an architecture for Pseudo Wire Emulation

   Edge-to-Edge (PWE3).  It discusses the emulation of services such as

   Frame Relay, ATM, Ethernet, TDM, and SONET/SDH over packet switched

   networks (PSNs) using IP or MPLS.  It presents the architectural

   framework for pseudo wires (PWs), defines terminology, and specifies

   the various protocol elements and their functions.

Table of Contents

   1.   Introduction. . . . . . . . . . . . . . . . . . . . . . . . .  2

        1.1.  Pseudo Wire Definition. . . . . . . . . . . . . . . . .  2

        1.2.  PW Service Functionality. . . . . . . . . . . . . . . .  3

        1.3.  Non-Goals of This Document. . . . . . . . . . . . . . .  4

        1.4.  Terminology . . . . . . . . . . . . . . . . . . . . . .  4

   2.   PWE3 Applicability. . . . . . . . . . . . . . . . . . . . . .  6

   3.   Protocol Layering Model . . . . . . . . . . . . . . . . . . .  6

        3.1.  Protocol Layers . . . . . . . . . . . . . . . . . . . .  7

        3.2.  Domain of PWE3. . . . . . . . . . . . . . . . . . . . .  8

        3.3.  Payload Types . . . . . . . . . . . . . . . . . . . . .  8

   4.   Architecture of Pseudo Wires. . . . . . . . . . . . . . . . . 11

        4.1.  Network Reference Model . . . . . . . . . . . . . . . . 12

        4.2.  PWE3 Pre-processing . . . . . . . . . . . . . . . . . . 12

        4.3.  Maintenance Reference Model . . . . . . . . . . . . . . 16

        4.4.  Protocol Stack Reference Model. . . . . . . . . . . . . 17

        4.5.  Pre-processing Extension to Protocol Stack Reference

              Model . . . . . . . . . . . . . . . . . . . . . . . . . 17

   5.   PW Encapsulation. . . . . . . . . . . . . . . . . . . . . . . 18

Bryant & Pate               Standards Track                     [Page 1]

RFC 3985                   PWE3 Architecture             ...