GMPLS Routing and Signaling Framework for B100G
draft-merge-ccamp-otn-b100g-fwk-02

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Internet Engineering Task Force                             Q. Wang, Ed.
Internet-Draft                                                       ZTE
Intended status: Informational                          R. Valiveti, Ed.
Expires: May 3, 2018                                       Infinera Corp
                                                           H. Zheng, Ed.
                                                                  Huawei
                                                             H. Helvoort
                                                         Hai Gaoming B.V
                                                              S. Belotti
                                                                   Nokia
                                                        October 30, 2017

            GMPLS Routing and Signaling Framework for B100G
                   draft-merge-ccamp-otn-b100g-fwk-02

Abstract

   The 2016 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 May 3, 2018                  [Page 1]
Internet-Draft              B100G Extensions                October 2017

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Scope . . . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
     2.1.  Requirements Language . . . . . . . . . . . . . . . . . .   3
     2.2.  OTN terminology used in this document . . . . . . . . . .   3
   3.  Overview of B100G in G.709  . . . . . . . . . . . . . . . . .   4
     3.1.  OTUCn . . . . . . . . . . . . . . . . . . . . . . . . . .   4
       3.1.1.  Carrying OTUCn between 3R points  . . . . . . . . . .   5
     3.2.  ODUCn . . . . . . . . . . . . . . . . . . . . . . . . . .   7
     3.3.  OTUCn-M . . . . . . . . . . . . . . . . . . . . . . . . .   9
     3.4.  OPUCn Time Slot Granularity . . . . . . . . . . . . . . .   9
     3.5.  Structure of OPUCn MSI with Payload type 0x22 . . . . . .  10
     3.6.  Client Signal Mappings  . . . . . . . . . . . . . . . . .  10
   4.  Usecases  . . . . . . . . . . . . . . . . . . . . . . . . . .  12
     4.1.  100GE Client Service with a homogeneous chain of OTUC1
           links . . . . . . . . . . . . . . . . . . . . . . . . . .  13
     4.2.  100GE Client Service with a mix of ODU4, and ODUC1
           connections . . . . . . . . . . . . . . . . . . . . . . .  14
     4.3.  Transport of non-OTN Client Signal over ODUCn connection   14
       4.3.1.  400GE Client Service with a mix of OTUCn links  . . .  14
       4.3.2.  FlexE aware transport over OTUCn links  . . . . . . .  15
       4.3.3.  FlexE Client transport over OTUCn links . . . . . . .  16
     4.4.  Multihop ODUCn link . . . . . . . . . . . . . . . . . . .  17
     4.5.  Use of OTUCn-M links  . . . . . . . . . . . . . . . . . .  18
     4.6.  Intermediate State of ODU mux . . . . . . . . . . . . . .  19
   5.  GMPLS Implications  . . . . . . . . . . . . . . . . . . . . .  19
     5.1.  OTN ODUCn/OTUCn hierarchy . . . . . . . . . . . . . . . .  19
     5.2.  OTUCn/OTUCn-M/ODUCn LSP . . . . . . . . . . . . . . . . .  20
     5.3.  Implications for GMPLS Signaling  . . . . . . . . . . . .  20
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