Applicability of GMPLS for B100G Optical Transport Network
draft-ietf-ccamp-gmpls-otn-b100g-applicability-06

Document Type Active Internet-Draft (ccamp WG)
Authors Qilei Wang  , Radha Valiveti  , Haomian Zheng  , Huub van Helvoort  , Sergio Belotti 
Last updated 2020-12-07
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Internet Engineering Task Force                             Q. Wang, Ed.
Internet-Draft                                           ZTE Corporation
Intended status: Informational                          R. Valiveti, Ed.
Expires: June 10, 2021                                     Infinera Corp
                                                           H. Zheng, Ed.
                                                                  Huawei
                                                             H. Helvoort
                                                         Hai Gaoming B.V
                                                              S. Belotti
                                                                   Nokia
                                                        December 7, 2020

       Applicability of GMPLS for B100G Optical Transport Network
           draft-ietf-ccamp-gmpls-otn-b100g-applicability-06

Abstract

   This document examines the applicability of using existing GMPLS
   routing and signalling mechanisms to set up ODUk (e.g., ODUflex) LSP
   over ODUCn links, as defined in the 2020 version of G.709.

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Wang, et al.              Expires June 10, 2021                 [Page 1]
Internet-Draft              B100G Extensions               December 2020

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  OTN terminology used in this document . . . . . . . . . . . .   3
   3.  Overview of the OTUCn/ODUCn in G.709  . . . . . . . . . . . .   3
     3.1.  OTUCn . . . . . . . . . . . . . . . . . . . . . . . . . .   3
       3.1.1.  OTUCn-M . . . . . . . . . . . . . . . . . . . . . . .   5
     3.2.  ODUCn . . . . . . . . . . . . . . . . . . . . . . . . . .   5
     3.3.  Time Slot Granularity . . . . . . . . . . . . . . . . . .   7
     3.4.  Structure of OPUCn MSI with Payload type 0x22 . . . . . .   7
     3.5.  Client Signal Mappings  . . . . . . . . . . . . . . . . .   8
   4.  GMPLS Implications and Applicability  . . . . . . . . . . . .   9
     4.1.  TE-Link Representation  . . . . . . . . . . . . . . . . .   9
     4.2.  Implications and Applicability for GMPLS Signalling . . .  10
     4.3.  Implications and Applicability for GMPLS Routing  . . . .  11
   5.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  12
   6.  Authors (Full List) . . . . . . . . . . . . . . . . . . . . .  12
   7.  Contributors  . . . . . . . . . . . . . . . . . . . . . . . .  13
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  14
   9.  Security Considerations . . . . . . . . . . . . . . . . . . .  14
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .  14
     10.1.  Normative References . . . . . . . . . . . . . . . . . .  14
     10.2.  Informative References . . . . . . . . . . . . . . . . .  14
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  15

1.  Introduction

   The current GMPLS routing [RFC7138] and signalling [RFC7139]
   extensions support the control of OTN signals and capabilities that
   were defined in the 2012 version of G.709 [ITU-T_G709_2012].

   In 2016 a new version of G.709 was published: [ITU-T_G709_2016].
   This version introduces new higher rate OTU and ODU signals, termed
   OTUCn and ODUCn respectively, which have a nominal rate of n x 100
   Gbit/s.  According to the definition in [ITU-T_G709_2016], OTUCn and
   ODUCn perform only section layer role and ODUCn supports only ODUk
   clients.  This document focuses on the use of existing GMPLS
   mechanisms to set up ODUk (e.g., ODUflex) LSP over ODUCn links,
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