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Transparent SDH/SONET over Packet
draft-manhoudt-pwe3-tsop-05

Document type: Active Internet-Draft (individual)
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Last updated: 2014-08-04
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INTERNET-DRAFT                                               G. Manhoudt
Intended Status: Proposed Standard                             AimValley
Expires: February 5, 2015                                               
                                                              S. Roullot
                                                          Alcatel-Lucent
                                                                        
                                                               K.Y. Wong
                                                          Alcatel-Lucent
                                                                        
                                                                H.L. Kuo
                                                        Chunghwa Telecom
                                                                        
                                                          August 4, 2014

                   Transparent SDH/SONET over Packet 
                      draft-manhoudt-pwe3-tsop-05

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

   This Internet-Draft is submitted to IETF in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF), its areas, and its working groups.  Note that
   other groups may also distribute working documents as
   Internet-Drafts.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

 

Manhoudt et al.         Expires February 5, 2015                [Page 1]
INTERNET DRAFT     Transparent SDH/SONET over Packet      August 4, 2014

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Copyright and License Notice

   Copyright (c) 2014 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

 

Manhoudt et al.         Expires February 5, 2015                [Page 2]
INTERNET DRAFT     Transparent SDH/SONET over Packet      August 4, 2014

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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