draft-ietf-pce-wson-rwa-ext-15.txt   draft-ietf-pce-wson-rwa-ext-16.txt 
Network Working Group Y. Lee, Ed. Network Working Group Y. Lee, Ed.
Internet Draft Huawei Technologies Internet Draft Huawei Technologies
Intended status: Standard Track R. Casellas, Ed. Intended status: Standard Track R. Casellas, Ed.
Expires: August 21, 2019 CTTC Expires: September 1, 2019 CTTC
February 22, 2019 March 1, 2019
PCEP Extension for WSON Routing and Wavelength Assignment PCEP Extension for WSON Routing and Wavelength Assignment
draft-ietf-pce-wson-rwa-ext-15 draft-ietf-pce-wson-rwa-ext-16
Abstract Abstract
This document provides the Path Computation Element communication This document provides the Path Computation Element communication
Protocol (PCEP) extensions for the support of Routing and Wavelength Protocol (PCEP) extensions for the support of Routing and Wavelength
Assignment (RWA) in Wavelength Switched Optical Networks (WSON). Assignment (RWA) in Wavelength Switched Optical Networks (WSON).
Path provisioning in WSONs requires a routing and wavelength Path provisioning in WSONs requires a routing and wavelength
assignment (RWA) process. From a path computation perspective, assignment (RWA) process. From a path computation perspective,
wavelength assignment is the process of determining which wavelength wavelength assignment is the process of determining which wavelength
can be used on each hop of a path and forms an additional routing can be used on each hop of a path and forms an additional routing
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Internet-Drafts are draft documents valid for a maximum of six Internet-Drafts are draft documents valid for a maximum of six
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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The list of current Internet-Drafts can be accessed at The list of current Internet-Drafts can be accessed at
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This Internet-Draft will expire on August 21, 2019. This Internet-Draft will expire on September 1, 2019.
Copyright Notice Copyright Notice
Copyright (c) 2019 IETF Trust and the persons identified as the Copyright (c) 2019 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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7. Security Considerations.......................................23 7. Security Considerations.......................................23
8. IANA Considerations...........................................23 8. IANA Considerations...........................................23
8.1. New PCEP Object: Wavelength Assignment Object............23 8.1. New PCEP Object: Wavelength Assignment Object............23
8.2. WA Object Flag Field.....................................24 8.2. WA Object Flag Field.....................................24
8.3. New PCEP TLV: Wavelength Selection TLV...................24 8.3. New PCEP TLV: Wavelength Selection TLV...................24
8.4. New PCEP TLV: Wavelength Restriction Constraint TLV......24 8.4. New PCEP TLV: Wavelength Restriction Constraint TLV......24
8.5. Wavelength Restriction Constraint TLV Action Values......25 8.5. Wavelength Restriction Constraint TLV Action Values......25
8.6. New PCEP TLV: Wavelength Allocation TLV..................25 8.6. New PCEP TLV: Wavelength Allocation TLV..................25
8.7. Wavelength Allocation TLV Flag Field.....................26 8.7. Wavelength Allocation TLV Flag Field.....................26
8.8. New PCEP TLV: Optical Interface Class List TLV...........26 8.8. New PCEP TLV: Optical Interface Class List TLV...........26
8.9. New PCEP TLV: Client Signal TLV..........................26 8.9. New PCEP TLV: Client Signal TLV..........................27
8.10. New No-Path Reasons.....................................27 8.10. New No-Path Reasons.....................................27
8.11. New Error-Types and Error-Values........................27 8.11. New Error-Types and Error-Values........................27
8.12. New Subobjects for the Exclude Route Object.............28 8.12. New Subobjects for the Exclude Route Object.............28
8.13. New Subobjects for the Include Route Object.............28 8.13. New Subobjects for the Include Route Object.............28
8.14. Request for Updated Note for LMP TE Link Object Class Type 8.14. Request for Updated Note for LMP TE Link Object Class Type
..............................................................28 ..............................................................29
9. Acknowledgments...............................................29 9. Acknowledgments...............................................29
10. References...................................................29 10. References...................................................29
10.1. Normative References....................................29 10.1. Normative References....................................29
10.2. Informative References..................................30 10.2. Informative References..................................30
11. Contributors.................................................32 11. Contributors.................................................32
Authors' Addresses...............................................33 Authors' Addresses...............................................33
1. Terminology 1. Terminology
This document uses the terminology defined in [RFC4655], and This document uses the terminology defined in [RFC4655], and
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o Defining RFC o Defining RFC
The following values are defined in this document: The following values are defined in this document:
One bit is defined for the WA Object flag in this document: One bit is defined for the WA Object flag in this document:
Codespace of the Flag field (WA Object) Codespace of the Flag field (WA Object)
Bit Description Reference Bit Description Reference
------------------------------------------------- -------------------------------------------------
15 explicit label control [This.I-D] 0-14 Unassigned [This.I-D]
15 Explicit Label Control [This.I-D]
8.3. New PCEP TLV: Wavelength Selection TLV 8.3. New PCEP TLV: Wavelength Selection TLV
As described in Sections 4.2, a new PCEP TLV is defined to indicate As described in Sections 4.2, a new PCEP TLV is defined to indicate
wavelength selection constraints. IANA is to allocate this new TLV wavelength selection constraints. IANA is to allocate this new TLV
from the "PCEP TLV Type Indicators" subregistry from the "PCEP TLV Type Indicators" subregistry
(http://www.iana.org/assignments/pcep/pcep.xhtml#pcep-tlv-type- (http://www.iana.org/assignments/pcep/pcep.xhtml#pcep-tlv-type-
indicators). indicators).
Value Description Reference Value Description Reference
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o Defining RFC o Defining RFC
One bit is defined for the Wavelength Allocation flag in this - One bit is defined for the Wavelength Allocation flag in this -
document: document:
Codespace of the Flag field (Wavelength Allocation TLV) Codespace of the Flag field (Wavelength Allocation TLV)
Bit Description Reference Bit Description Reference
------------------------------------------------- -------------------------------------------------
0-14 Unassigned [This.I-D]
15 Wavelength Allocation Mode [This.I-D] 15 Wavelength Allocation Mode [This.I-D]
8.8. New PCEP TLV: Optical Interface Class List TLV 8.8. New PCEP TLV: Optical Interface Class List TLV
As described in Section 4.4, a new PCEP TLV is defined to indicate As described in Section 4.4, a new PCEP TLV is defined to indicate
the optical interface class list. IANA is to allocate this new TLV the optical interface class list. IANA is to allocate this new TLV
from the "PCEP TLV Type Indicators" subregistry from the "PCEP TLV Type Indicators" subregistry
(http://www.iana.org/assignments/pcep/pcep.xhtml#pcep-tlv-type- (http://www.iana.org/assignments/pcep/pcep.xhtml#pcep-tlv-type-
indicators). indicators).
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As described in Section 5.2, new PCEP error codes are defined for As described in Section 5.2, new PCEP error codes are defined for
WSON RWA errors. IANA is to allocate from the ""PCEP-ERROR Object WSON RWA errors. IANA is to allocate from the ""PCEP-ERROR Object
Error Types and Values" sub-registry Error Types and Values" sub-registry
(http://www.iana.org/assignments/pcep/pcep.xhtml#pcep-error-object). (http://www.iana.org/assignments/pcep/pcep.xhtml#pcep-error-object).
Error- Meaning Error-Value Reference Error- Meaning Error-Value Reference
Type Type
--------------------------------------------------------------- ---------------------------------------------------------------
TBD8 WSON RWA Error 1: Insufficient [This.I-D] TBD8 WSON RWA Error 0: Unassigned [This.I-D]
1: Insufficient [This.I-D]
Memory Memory
2: RWA computation [This.I-D] 2: RWA computation [This.I-D]
Not supported Not supported
3: Syntactical [This.I-D] 3: Syntactical [This.I-D]
Encoding error Encoding error
4-255: Unassigned [This.I-D]
8.12. New Subobjects for the Exclude Route Object 8.12. New Subobjects for the Exclude Route Object
As described in Section 4.4.1, the "PCEP Parameters" registry As described in Section 4.4.1, the "PCEP Parameters" registry
contains a subregistry "PCEP Objects" with an entry for the Exclude contains a subregistry "PCEP Objects" with an entry for the Exclude
Route Object (XRO). IANA is requested to add further subobjects that Route Object (XRO). IANA is requested to add further subobjects that
can be carried in the XRO as follows: can be carried in the XRO as follows:
Subobject Type Reference Subobject Type Reference
---------------------------------------------------------- ----------------------------------------------------------
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