GMPLS Routing and Signaling Framework for B100G
draft-zih-ccamp-otn-b100g-fwk-00

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Internet Engineering Task Force                             Q. Wang, Ed.
Internet-Draft                                                  Y. Zhang
Intended status: Informational                                       ZTE
Expires: August 11, 2017                                     R. Valiveti
                                                         I. Hussain, Ed.
                                                                  R. Rao
                                                           Infinera Corp
                                                             H. Helvoort
                                                         Hai Gaoming B.V
                                                        February 7, 2017

            GMPLS Routing and Signaling Framework for B100G
                    draft-zih-ccamp-otn-b100g-fwk-00

Abstract

   The latest revision of G.709 introduces support for OTU links with
   rates larger than 100G.  This document provides a framework to
   address the GMPLS routing and signalling extensions that enable GMPLS
   to setup paths through network that contain these newly introduced
   OTUCn links.

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Wang, et al.             Expires August 11, 2017                [Page 1]
Internet-Draft              B100G Extensions               February 2017

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Overview of B100G links in G.709  . . . . . . . . . . . . . .   5
     3.1.  The OTUCn signal  . . . . . . . . . . . . . . . . . . . .   5
       3.1.1.  Carrying OTUCn signal between 3R points . . . . . . .   6
     3.2.  The OTUCn-M signal  . . . . . . . . . . . . . . . . . . .   9
     3.3.  The ODUCn signal  . . . . . . . . . . . . . . . . . . . .  10
     3.4.  OPUCn Time Slot Granularity . . . . . . . . . . . . . . .  10
     3.5.  Structure of OPUCn MSI  . . . . . . . . . . . . . . . . .  11
     3.6.  Client Signal Mappings  . . . . . . . . . . . . . . . . .  12
   4.  Usecases  . . . . . . . . . . . . . . . . . . . . . . . . . .  14
     4.1.  100GE Client Service with a homogeneous chain of OTUC1
           links . . . . . . . . . . . . . . . . . . . . . . . . . .  15
     4.2.  100GE Client Service with a mix of OTU4, and OTUC1 links   16
     4.3.  400GE Client Service with a mix of OTUCn links  . . . . .  16
     4.4.  FlexE aware transport over OTUCn links  . . . . . . . . .  17
     4.5.  FlexE Client transport over OTUCn links . . . . . . . . .  18
     4.6.  Multihop ODUCn link . . . . . . . . . . . . . . . . . . .  19
     4.7.  Use of OTUCn-M links  . . . . . . . . . . . . . . . . . .  20
     4.8.  Intermediate State of ODU mux . . . . . . . . . . . . . .  21
   5.  GMPLS Implications  . . . . . . . . . . . . . . . . . . . . .  21
     5.1.  OTN ODUCn layer network . . . . . . . . . . . . . . . . .  21
     5.2.  Implications for GMPLS Signaling  . . . . . . . . . . . .  22
     5.3.  Implications for GMPLS Routing  . . . . . . . . . . . . .  22
   6.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  23
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  23
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .  23
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  23
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