draft-ietf-ccamp-dwdm-if-mng-ctrl-fwk-11.txt   draft-ietf-ccamp-dwdm-if-mng-ctrl-fwk-12.txt 
Internet Engineering Task Force R. Kunze, Ed. Internet Engineering Task Force R. Kunze, Ed.
Internet-Draft Deutsche Telekom Internet-Draft Deutsche Telekom
Intended status: Informational G. Grammel, Ed. Intended status: Informational G. Grammel, Ed.
Expires: December 13, 2018 Juniper Expires: May 17, 2019 Juniper
D. Beller D. Beller
Nokia Nokia
G. Galimberti, Ed. G. Galimberti, Ed.
Cisco Cisco
J. Meuric J. Meuric
Orange Orange
June 11, 2018 November 13, 2018
A framework for Management and Control of DWDM optical interface A framework for Management and Control of DWDM optical interface
parameters parameters
draft-ietf-ccamp-dwdm-if-mng-ctrl-fwk-11 draft-ietf-ccamp-dwdm-if-mng-ctrl-fwk-12
Abstract Abstract
The control and management of DWDM interfaces are a precondition for The control and management of DWDM interfaces are a precondition for
enhanced multilayer networking. They are needed to ensure an enhanced multilayer networking. They are needed to ensure an
efficient data transport, to meet the requirements requested by efficient data transport, to meet the requirements requested by
today's IP-services and to provide a further automation of network today's IP-services and to provide a further automation of network
provisioning and operations. This document describes use cases, provisioning and operations. This document describes use cases,
requirements and solutions for the control and management of optical requirements and solutions for the control and management of optical
interface parameters according to different types of single channel interface parameters according to different types of single channel
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Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet- working documents as Internet-Drafts. The list of current Internet-
Drafts is at https://datatracker.ietf.org/drafts/current/. Drafts is at https://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress." material or to cite them other than as "work in progress."
This Internet-Draft will expire on December 13, 2018. This Internet-Draft will expire on May 17, 2019.
Copyright Notice Copyright Notice
Copyright (c) 2018 IETF Trust and the persons identified as the Copyright (c) 2018 IETF Trust and the persons identified as the
document authors. All rights reserved. document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents Provisions Relating to IETF Documents
(https://trustee.ietf.org/license-info) in effect on the date of (https://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents publication of this document. Please review these documents
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different vendors) to provide a single optical channel interface and different vendors) to provide a single optical channel interface and
transport it over an optical network composed of amplifiers, filters, transport it over an optical network composed of amplifiers, filters,
add-drop multiplexers these being possibly from different vendors. add-drop multiplexers these being possibly from different vendors.
Therefore the standard defines the ingress and egress parameters for Therefore the standard defines the ingress and egress parameters for
the optical interfaces at the reference points Source side (Ss) and the optical interfaces at the reference points Source side (Ss) and
Receive side (Rs). Receive side (Rs).
Single Channel DWDM Interface: The single channel interfaces to DWDM Single Channel DWDM Interface: The single channel interfaces to DWDM
systems defined in [ITU-T.G.698.2], which currently include the systems defined in [ITU-T.G.698.2], which currently include the
following features: channel frequency spacing: 50 GHz and wider following features: channel frequency spacing: 50 GHz and wider
(defined in [ITU-T.G.694.1] ); bit rate of single channel: Up to 10 (defined in [ITU-T.G.694.1] ); bit rate of single channel: Up to 100
Gbit/s. Future revisions are expected to include application codes Gbit/s. Future revisions are expected to include application codes
for bit rates up to 40 Gb/s. for bit rates up to 400 Gbit/s.
Forward Error Correction (FEC): FEC is a way of improving the Forward Error Correction (FEC): FEC is a way of improving the
performance of high-capacity optical transmission systems. Employing performance of high-capacity optical transmission systems. Employing
FEC in optical transmission systems yields system designs that can FEC in optical transmission systems yields system designs that can
accept relatively large BER (much more than 10^-12) in the optical accept relatively large BER (much more than 10^-12) in the optical
transmission line (before decoding). transmission line (before decoding).
Administrative domain [ITU-T.G.805]: the extent of resources which Administrative domain [ITU-T.G.805]: the extent of resources which
belong to a single player such as a network operator, a service belong to a single player such as a network operator, a service
provider or an end-user. Administrative domains of different players provider or an end-user. Administrative domains of different players
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some form of a control channel exists between the client node and the some form of a control channel exists between the client node and the
WDM equipment. This may be a dedicated lambda or an Ethernet Link. WDM equipment. This may be a dedicated lambda or an Ethernet Link.
4.2. Control Plane Considerations 4.2. Control Plane Considerations
The concept of integrated single channel DWDM interfaces equally The concept of integrated single channel DWDM interfaces equally
applies to management and control plane mechanisms. GMPLS control applies to management and control plane mechanisms. GMPLS control
plane protocols have been extended for WSON, e.g. RFC 7689 [RFC7689] plane protocols have been extended for WSON, e.g. RFC 7689 [RFC7689]
) for fixed grid signal and for flexi-grid RFC 7792 [RFC7792] ). One ) for fixed grid signal and for flexi-grid RFC 7792 [RFC7792] ). One
important aspect of the Black Link [ITU-T.G.698.2] is the fact that important aspect of the Black Link [ITU-T.G.698.2] is the fact that
it includes the wavelength that is supported by the given link. it is specific to the wavelength that is supported by the given link.
Therefore, the link can logically be considered as a fiber that is Therefore, the link can logically be considered as a fiber that is
transparent only for a single wavelength. In other words, the transparent only for a single wavelength. In other words, the
wavelength becomes a characteristic of the link itself. wavelength becomes a characteristic of the link itself.
Nevertheless the procedure to light up the fiber may vary depending Nevertheless the procedure to light up the fiber may vary depending
on the implementation. Since the implementation is unknown a priori, on the implementation. Since the implementation is unknown a priori,
different sequences to light up a wavelength need to be considered: different sequences to light up a wavelength need to be considered:
1. Interface first, interface tuning: The transmitter is switched on 1. Interface first, interface tuning: The transmitter is switched on
and the link is immediately transparent to its wavelength. This and the link is immediately transparent to its wavelength. This
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