INTERNET-DRAFT G. Manhoudt
Intended Status: Proposed Standard AimValley
Expires: August 12, 2013
S. Roullot
Alcatel-Lucent
K.Y. Wong
Alcatel-Lucent
H.L. Kuo
Chunghwa Telecom
February 8, 2013
Transparent SDH/SONET over Packet
draft-manhoudt-pwe3-tsop-02
Abstract
This document describes the Transparent SDH/SONET over Packet (TSoP)
mechanism to encapsulate Synchronous Digital Hierarchy (SDH) or
Synchronous Optical NETwork (SONET) bit-streams in a packet format,
suitable for Pseudowire (PW) transport over a packet switched network
(PSN). The key property of the TSoP method is that it transports
the SDH/SONET client signal in its entirety through the PW, i.e., no
use is made of any specific characteristic of the SONET/SDH signal
format, other than its bit rate. The TSoP transparency includes
transporting the timing properties of the SDH/SONET client signal.
This ensures a maximum of transparency and a minimum of complexity,
both in implementation and during operation.
Status of this Memo
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 4
2. Terminology and Conventions . . . . . . . . . . . . . . . . . 5
2.1. Conventions Used in This Document . . . . . . . . . . . . 5
2.2. Acronyms and Terms . . . . . . . . . . . . . . . . . . . . 5
3. Emulated STM-N Services . . . . . . . . . . . . . . . . . . . 6
3.1. PSN-bound Direction . . . . . . . . . . . . . . . . . . . 9
3.2. CE-bound Direction . . . . . . . . . . . . . . . . . . . . 9
4. TSoP Encapsulation Layer . . . . . . . . . . . . . . . . . . . 11
4.1. TSoP Packet Format . . . . . . . . . . . . . . . . . . . . 11
4.2. PSN/PW Headers . . . . . . . . . . . . . . . . . . . . . . 11
4.2.1 Transport over an MPLS(-TP) PSN . . . . . . . . . . . . 11
4.3. TSoP Encapsulation Headers . . . . . . . . . . . . . . . . 12
4.3.1. Location and Order of TSoP Encapsulation Headers . . . 12
4.3.2. Usage and Structure of the TSoP Control Word . . . . . 12
4.3.3. Usage of the RTP Header . . . . . . . . . . . . . . . 14
5. TSoP Payload Field . . . . . . . . . . . . . . . . . . . . . . 16
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