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