draft-ietf-ccamp-rwa-info-21.txt   draft-ietf-ccamp-rwa-info-22.txt 
Network Working Group Y. Lee Network Working Group Y. Lee
Internet Draft Huawei Internet Draft Huawei
Intended status: Informational G. Bernstein Intended status: Informational G. Bernstein
Expires: August 2014 Grotto Networking Expires: February 2015 Grotto Networking
D. Li D. Li
Huawei Huawei
W. Imajuku W. Imajuku
NTT NTT
February 13, 2014 August 18, 2014
Routing and Wavelength Assignment Information Model for Wavelength Routing and Wavelength Assignment Information Model for Wavelength
Switched Optical Networks Switched Optical Networks
draft-ietf-ccamp-rwa-info-21.txt draft-ietf-ccamp-rwa-info-22.txt
Status of this Memo Status of this Memo
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Drafts. Drafts.
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months and may be updated, replaced, or obsoleted by other documents months and may be updated, replaced, or obsoleted by other documents
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This Internet-Draft will expire on August 13, 2014. This Internet-Draft will expire on February 18, 2015.
Copyright Notice Copyright Notice
Copyright (c) 2014 IETF Trust and the persons identified as the Copyright (c) 2014 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
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publication of this document. Please review these documents publication of this document. Please review these documents
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Port label (wavelength) restrictions (PortLabelRestriction) model Port label (wavelength) restrictions (PortLabelRestriction) model
the label (wavelength) restrictions that the link and various the label (wavelength) restrictions that the link and various
optical devices such as OXCs, ROADMs, and waveband multiplexers may optical devices such as OXCs, ROADMs, and waveband multiplexers may
impose on a port. These restrictions tell us what wavelength may or impose on a port. These restrictions tell us what wavelength may or
may not be used on a link and are relatively static. This plays an may not be used on a link and are relatively static. This plays an
important role in fully characterizing a WSON switching device important role in fully characterizing a WSON switching device
[Switch]. Port wavelength restrictions are specified relative to the [Switch]. Port wavelength restrictions are specified relative to the
port in general or to a specific connectivity matrix (section 4.1. port in general or to a specific connectivity matrix (section 4.1.
Reference [Switch] gives an example where both switch and fixed Reference [Switch] gives an example where both switch and fixed
connectivity matrices are used and both types of constraints occur connectivity matrices are used and both types of constraints occur
on the same port. on the same port. <PortLabelRestriction> ::= <MatrixID>
<RestrictionType>
<PortLabelRestriction> ::= <MatrixID> <RestrictionType>
<Restriction parameters list> <Restriction parameters list>
<Restriction parameters list> ::= <Restriction parameters list> ::=
<Simple label restriction parameters> | <Simple label restriction parameters> |
<Channel count restriction parameters> | <Channel count restriction parameters> |
<Label range restriction parameters> | <Label range restriction parameters> |
<Simple+channel restriction parameters> | <Simple+channel restriction parameters> |
<Exclusive label restriction parameters> <Exclusive label restriction parameters>
<Simple label restriction parameters> ::= <LabelSet> ... <Simple label restriction parameters> ::= <LabelSet> ...
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previously listed restriction types. The currently defined previously listed restriction types. The currently defined
parameters are: parameters are:
LabelSet is a conceptual set of labels (wavelengths). LabelSet is a conceptual set of labels (wavelengths).
MaxNumChannels is the maximum number of channels that can be MaxNumChannels is the maximum number of channels that can be
simultaneously used (relative to either a port or a matrix). simultaneously used (relative to either a port or a matrix).
LinkSet is a conceptual set of ports. LinkSet is a conceptual set of ports.
MaxLabelRange indicates the maximum range of the labels. MaxLabelRange indicates the maximum range of the labels.For example,
if the port is a "colored" drop port of a ROADM then there are two
For example, if the port is a "colored" drop port of a ROADM then restrictions: (a) CHANNEL_COUNT, with MaxNumChannels = 1, and (b)
there are two restrictions: (a) CHANNEL_COUNT, with MaxNumChannels = SIMPLE_WAVELENGTH, with the wavelength set consisting of a single
1, and (b) SIMPLE_WAVELENGTH, with the wavelength set consisting of member corresponding to the frequency of the permitted wavelength.
a single member corresponding to the frequency of the permitted See [Switch] for a complete waveband example.
wavelength. See [Switch] for a complete waveband example.
This information model for port wavelength (label) restrictions is This information model for port wavelength (label) restrictions is
fairly general in that it can be applied to ports that have label fairly general in that it can be applied to ports that have label
restrictions only or to ports that are part of an asymmetric switch restrictions only or to ports that are part of an asymmetric switch
and have label restrictions. In addition, the types of label and have label restrictions. In addition, the types of label
restrictions that can be supported are extensible. restrictions that can be supported are extensible.
6.6.1. Port-Wavelength Exclusivity Example 6.6.1. Port-Wavelength Exclusivity Example
Although there can be many different ROADM or switch architectures Although there can be many different ROADM or switch architectures
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