draft-ietf-ccamp-rwa-info-15.txt   draft-ietf-ccamp-rwa-info-16.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: February 2013 Grotto Networking Expires: February 2013 Grotto Networking
D. Li D. Li
Huawei Huawei
W. Imajuku W. Imajuku
NTT NTT
August 8, 2012 August 16, 2012
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-15.txt draft-ietf-ccamp-rwa-info-16.txt
Status of this Memo Status of this Memo
This Internet-Draft is submitted to IETF in full conformance with This Internet-Draft is submitted to IETF in full conformance with
the provisions of BCP 78 and BCP 79. the provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF), its areas, and its working groups. Note that Task Force (IETF), its areas, and its working groups. Note that
other groups may also distribute working documents as Internet- other groups may also distribute working documents as Internet-
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
at any time. It is inappropriate to use Internet-Drafts as at any time. It is inappropriate to use Internet-Drafts as
reference material or to cite them other than as "work in progress." reference material or to cite them other than as "work in progress."
The list of current Internet-Drafts can be accessed at The list of current Internet-Drafts can be accessed at
http://www.ietf.org/ietf/1id-abstracts.txt http://www.ietf.org/ietf/1id-abstracts.txt
The list of Internet-Draft Shadow Directories can be accessed at The list of Internet-Draft Shadow Directories can be accessed at
http://www.ietf.org/shadow.html http://www.ietf.org/shadow.html
This Internet-Draft will expire on September 8, 2012. This Internet-Draft will expire on February 16, 2013.
Copyright Notice Copyright Notice
Copyright (c) 2012 IETF Trust and the persons identified as the Copyright (c) 2012 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
(http://trustee.ietf.org/license-info) in effect on the date of (http://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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1.1.5. Changes from 05......................................5 1.1.5. Changes from 05......................................5
1.1.6. Changes from 06......................................5 1.1.6. Changes from 06......................................5
1.1.7. Changes from 07......................................5 1.1.7. Changes from 07......................................5
1.1.8. Changes from 08......................................5 1.1.8. Changes from 08......................................5
1.1.9. Changes from 09......................................5 1.1.9. Changes from 09......................................5
1.1.10. Changes from 10.....................................6 1.1.10. Changes from 10.....................................6
1.1.11. Changes from 11.....................................6 1.1.11. Changes from 11.....................................6
1.1.12. Changes from 12.....................................6 1.1.12. Changes from 12.....................................6
1.1.13. Changes from 13.....................................6 1.1.13. Changes from 13.....................................6
1.1.14. Changes from 14.....................................6 1.1.14. Changes from 14.....................................6
2. Terminology....................................................6 1.1.15. Changes from 15.....................................6
2. Terminology....................................................7
3. Routing and Wavelength Assignment Information Model............7 3. Routing and Wavelength Assignment Information Model............7
3.1. Dynamic and Relatively Static Information.................7 3.1. Dynamic and Relatively Static Information.................8
4. Node Information (General).....................................8 4. Node Information (General).....................................8
4.1. Connectivity Matrix.......................................8 4.1. Connectivity Matrix.......................................9
4.2. Shared Risk Node Group....................................9 4.2. Shared Risk Node Group....................................9
5. Node Information (WSON specific)..............................10 5. Node Information (WSON specific)..............................10
5.1. Resource Accessibility/Availability......................11 5.1. Resource Accessibility/Availability......................11
5.2. Resource Signal Constraints and Processing Capabilities..14 5.2. Resource Signal Constraints and Processing Capabilities..15
5.3. Compatibility and Capability Details.....................15 5.3. Compatibility and Capability Details.....................16
5.3.1. Shared Input or Output Indication...................15 5.3.1. Shared Input or Output Indication...................16
5.3.2. Optical Interface Class List........................15 5.3.2. Optical Interface Class List........................16
5.3.3. Acceptable Client Signal List.......................15 5.3.3. Acceptable Client Signal List.......................16
5.3.4. Processing Capability List..........................15 5.3.4. Processing Capability List..........................16
6. Link Information (General)....................................16 6. Link Information (General)....................................17
6.1. Administrative Group.....................................16 6.1. Administrative Group.....................................17
6.2. Interface Switching Capability Descriptor................16 6.2. Interface Switching Capability Descriptor................17
6.3. Link Protection Type (for this link).....................16 6.3. Link Protection Type (for this link).....................18
6.4. Shared Risk Link Group Information.......................16 6.4. Shared Risk Link Group Information.......................18
6.5. Traffic Engineering Metric...............................17 6.5. Traffic Engineering Metric...............................18
6.6. Port Label (Wavelength) Restrictions.....................17 6.6. Port Label (Wavelength) Restrictions.....................18
6.6.1. Port-Wavelength Exclusivity Example.................19 6.6.1. Port-Wavelength Exclusivity Example.................20
7. Dynamic Components of the Information Model...................20 7. Dynamic Components of the Information Model...................21
7.1. Dynamic Link Information (General).......................21 7.1. Dynamic Link Information (General).......................22
7.2. Dynamic Node Information (WSON Specific).................21 7.2. Dynamic Node Information (WSON Specific).................22
8. Security Considerations.......................................21 8. Security Considerations.......................................22
9. IANA Considerations...........................................22 9. IANA Considerations...........................................23
10. Acknowledgments..............................................22 10. Acknowledgments..............................................23
11. References...................................................23 11. References...................................................24
11.1. Normative References....................................23 11.1. Normative References....................................24
11.2. Informative References..................................24 11.2. Informative References..................................25
12. Contributors.................................................25 12. Contributors.................................................26
Author's Addresses...............................................26 Author's Addresses...............................................27
Intellectual Property Statement..................................26 Intellectual Property Statement..................................27
Disclaimer of Validity...........................................27 Disclaimer of Validity...........................................28
1. Introduction 1. Introduction
The purpose of the following information model for WSONs is to The purpose of the following information model for WSONs is to
facilitate constrained lightpath computation and as such is not a facilitate constrained lightpath computation and as such is not a
general purpose network management information model. This general purpose network management information model. This
constraint is frequently referred to as the "wavelength continuity" constraint is frequently referred to as the "wavelength continuity"
constraint, and the corresponding constrained lightpath computation constraint, and the corresponding constrained lightpath computation
is known as the routing and wavelength assignment (RWA) problem. is known as the routing and wavelength assignment (RWA) problem.
Hence the information model must provide sufficient topology and Hence the information model must provide sufficient topology and
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Section 7.1: Clarified that this information model does not dictate Section 7.1: Clarified that this information model does not dictate
placement of information elements in protocols. In particular, added placement of information elements in protocols. In particular, added
a caveat that the available label information element may be placed a caveat that the available label information element may be placed
within the ISCD information element in the case of OSPF. within the ISCD information element in the case of OSPF.
1.1.14. Changes from 14 1.1.14. Changes from 14
OIC change requested by workgroup. OIC change requested by workgroup.
1.1.15. Changes from 15
Edits of OIC related text per CCAMP list email.
2. Terminology 2. Terminology
CWDM: Coarse Wavelength Division Multiplexing. CWDM: Coarse Wavelength Division Multiplexing.
DWDM: Dense Wavelength Division Multiplexing. DWDM: Dense Wavelength Division Multiplexing.
FOADM: Fixed Optical Add/Drop Multiplexer. FOADM: Fixed Optical Add/Drop Multiplexer.
ROADM: Reconfigurable Optical Add/Drop Multiplexer. A reduced port ROADM: Reconfigurable Optical Add/Drop Multiplexer. A reduced port
count wavelength selective switching element featuring input and count wavelength selective switching element featuring input and
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5.3.1. Shared Input or Output Indication 5.3.1. Shared Input or Output Indication
As discussed in the previous section and shown in Figure 2 the input As discussed in the previous section and shown in Figure 2 the input
or output access to a resource block may be via a shared fiber. The or output access to a resource block may be via a shared fiber. The
<SharedInput> and <SharedOutput> elements are indicators for this <SharedInput> and <SharedOutput> elements are indicators for this
condition with respect to the block being described. condition with respect to the block being described.
5.3.2. Optical Interface Class List 5.3.2. Optical Interface Class List
<OpticalInterfaceClassList> ::= <OPTICAL_INT_CLASS> ... <OpticalInterfaceClassList> ::= <OpticalInterfaceClass> ...
Where the term <OPTICAL_INT_CLASS> is defined by [xyz?]. The Optical Interface Class is a unique number that identifies
all information related to optical characteristics of a physical
interface. The class may include other optical parameters
related to other interface properties. A class always includes
signal compatibility information.
The content of each class is out of the scope of this draft and
can be defined by other entities (e.g. ITU, optical equipment
vendors, etc.).
Since even current implementation of physical interfaces may
support different optical characteristics, a single interface may
support multiple interface classes. Which optical interface
class is used among all the ones available for an interface is
out of the scope of this draft but is an output of the RWA
process.
5.3.3. Acceptable Client Signal List 5.3.3. Acceptable Client Signal List
The list is simply: The list is simply:
<client-signal-list>::=[<GPID>]... <client-signal-list>::=[<GPID>]...
Where the Generalized Protocol Identifiers (GPID) object Where the Generalized Protocol Identifiers (GPID) object
represents one of the IETF standardized GPID values as defined in represents one of the IETF standardized GPID values as defined in
[RFC3471] and [RFC4328]. [RFC3471] and [RFC4328].
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