draft-ietf-ccamp-wson-iv-info-06.txt   draft-ietf-ccamp-wson-iv-info-07.txt 
CCAMP G. Martinelli, Ed. CCAMP G. Martinelli, Ed.
Internet-Draft Cisco Internet-Draft Cisco
Intended status: Informational H. Zhang, Ed. Intended status: Informational H. Zhang, Ed.
Expires: September 6, 2018 Huawei Technologies Expires: March 8, 2019 Huawei Technologies
G. Galimberti G. Galimberti
Cisco Cisco
Y. Lee Y. Lee
F. Zhang F. Zhang
Huawei Technologies Huawei Technologies
March 5, 2018 September 4, 2018
Information Model for Wavelength Switched Optical Networks (WSONs) with Information Model for Wavelength Switched Optical Networks (WSONs) with
Impairments Validation Impairments Validation
draft-ietf-ccamp-wson-iv-info-06 draft-ietf-ccamp-wson-iv-info-07
Abstract Abstract
This document defines an information model to support Impairment- This document defines an information model to support Impairment-
Aware (IA) Routing and Wavelength Assignment (RWA) functionality. Aware (IA) Routing and Wavelength Assignment (RWA) functionality.
This information model extends the information model for impairment- This information model extends the information model for impairment-
free RWA process in WSON to facilitate computation of paths where free RWA process in WSON to facilitate computation of paths where
optical impairment constraints need to considered. optical impairment constraints need to considered.
Status of This Memo Status of This Memo
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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 September 6, 2018. This Internet-Draft will expire on March 8, 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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(a) the problem of calculating the non-linear impairments in a (a) the problem of calculating the non-linear impairments in a
multi-vendor environment is not solved. The transfer functions multi-vendor environment is not solved. The transfer functions
works only for the so called [ITU.G680] "Situation 1". works only for the so called [ITU.G680] "Situation 1".
(b) The generated list of parameters is not exhaustive however (b) The generated list of parameters is not exhaustive however
provide a guideline for control plane optical impairment provide a guideline for control plane optical impairment
awareness. awareness.
In particular, [ITU.G680] contains many parameters that would be In particular, [ITU.G680] contains many parameters that would be
required to estimate linear impairments. Some of the Computational required to estimate linear impairments. Some of the Computational
Models defined within [ITU.G680] requires parameters defined in Models defined within [ITU.G680] requires parameters defined in other
other documents like [ITU.G671]. The purpose of the list here below documents like [ITU.G671]. The purpose of the list here below makes
makes this match between the two documents. this match between the two documents.
[ITU.G697] defines parameters can be monitored in an optical network. [ITU.G697] defines parameters can be monitored in an optical network.
This Information Model and associated encoding document will reuse This Information Model and associated encoding document will reuse
[ITU.G697] parameters identifiers and encoding for the purpose of [ITU.G697] parameters identifiers and encoding for the purpose of
path computation. path computation.
The list of optical parameters starts from [ITU.G680] Section 9 which The list of optical parameters starts from [ITU.G680] Section 9 which
provides the optical computational models for the following p: provides the optical computational models for the following p:
G-1 OSNR. Section 9.1 G-1 OSNR. Section 9.1
G-2 Chromatic Dispersion (CD). Section 9.2 G-2 Chromatic Dispersion (CD). Section 9.2
G-3 Polarization Mode Dispersion (PMD). Section 9.3 G-3 Polarization Mode Dispersion (PMD). Section 9.3
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