draft-ietf-ccamp-flexible-grid-rsvp-te-ext-04.txt   draft-ietf-ccamp-flexible-grid-rsvp-te-ext-05.txt 
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Adrian Farrel Adrian Farrel
Old Dog Consulting Old Dog Consulting
Oscar Gonzalez de Dios Oscar Gonzalez de Dios
Telefonica Telefonica
D. Ceccarelli D. Ceccarelli
Ericsson Ericsson
Expires: May 19, 2016 November 20, 2015 Expires: May 19, 2016 November 20, 2015
RSVP-TE Signaling Extensions in support of Flexi-grid DWDM networks RSVP-TE Signaling Extensions in support of Flexi-grid DWDM networks
draft-ietf-ccamp-flexible-grid-rsvp-te-ext-04.txt draft-ietf-ccamp-flexible-grid-rsvp-te-ext-05.txt
Abstract Abstract
This memo describes the extensions to the Resource reSerVation This memo describes the extensions to the Resource reSerVation
Protocol Traffic Engineering (RSVP-TE) signaling protocol to support Protocol Traffic Engineering (RSVP-TE) signaling protocol to support
Label Switched Paths (LSPs) in a GMPLS-controlled network that Label Switched Paths (LSPs) in a GMPLS-controlled network that
includes devices using the flexible optical grid. includes devices using the flexible optical grid.
Status of this Memo Status of this Memo
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Table of Contents Table of Contents
1. Introduction ................................................ 2 1. Introduction ................................................ 2
2. Terminology ................................................. 3 2. Terminology ................................................. 3
2.1. Conventions used in this document .......................3 2.1. Conventions used in this document .......................3
3. Requirements for Flexible Grid Signaling .....................3 3. Requirements for Flexible Grid Signaling .....................3
3.1. Slot Width ............................................. 4 3.1. Slot Width ............................................. 4
3.2. Frequency Slot ......................................... 4 3.2. Frequency Slot ......................................... 4
4. Protocol Extensions ......................................... 5 4. Protocol Extensions ......................................... 5
4.1. Traffic Parameters ......................................5 4.1. Traffic Parameters...................................... 5
4.1.1. Applicability to Fixed Grid Networks ...............6 4.1.1. Applicability to Fixed Grid Networks ...............6
4.2. Generalized Label....................................... 6 4.2. Generalized Label....................................... 6
4.3. Signaling Procedures.................................... 7 4.3. Signaling Procedures.................................... 7
5. IANA Considerations ......................................... 7 5. IANA Considerations ......................................... 7
5.1. RSVP Objects Class Types................................ 7 5.1. RSVP Objects Class Types................................ 7
6. Manageability Considerations................................. 8 6. Manageability Considerations................................. 8
7. Implementation Status........................................ 8 7. Implementation Status........................................ 8
7.1. Centre Tecnologic de Telecomunicacions de Catalunya (CTTC)8 7.1. Centre Tecnologic de Telecomunicacions de Catalunya (CTTC)8
8. Acknowledgments ............................................ 10 8. Acknowledgments ............................................ 10
9. Security Considerations..................................... 10 9. Security Considerations..................................... 10
10. References ................................................ 10 10. References ................................................ 10
10.1. Normative References.................................. 10 10.1. Normative References.................................. 10
10.2. Informative References................................ 10 10.2. Informative References................................ 10
11. Contributors' Addresses.................................... 11 11. Contributors' Addresses.................................... 11
12. Authors' Addresses ......................................... 12 12. Authors' Addresses .........................................12
1. Introduction 1. Introduction
[G.694.1] defines the Dense Wavelength Division Multiplexing (DWDM) [G.694.1] defines the Dense Wavelength Division Multiplexing (DWDM)
frequency grids for Wavelength Division Multiplexing (WDM) frequency grids for Wavelength Division Multiplexing (WDM)
applications. A frequency grid is a reference set of frequencies applications. A frequency grid is a reference set of frequencies
used to denote allowed nominal central frequencies that may be used used to denote allowed nominal central frequencies that may be used
for defining applications that utilize WDM transmission. The channel for defining applications that utilize WDM transmission. The channel
spacing is the frequency spacing between two allowed nominal central spacing is the frequency spacing between two allowed nominal central
frequencies. All of the wavelengths on a fiber use different central frequencies. All of the wavelengths on a fiber use different central
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identifies the resources reserved for the LSP (known as the identifies the resources reserved for the LSP (known as the
frequency slot). frequency slot).
The frequency slot can be represented by the two parameters as The frequency slot can be represented by the two parameters as
follows: follows:
Frequency slot = [(central frequency) - (slot width)/2] ~ Frequency slot = [(central frequency) - (slot width)/2] ~
[(central frequency) + (slot width)/2] [(central frequency) + (slot width)/2]
As is common with other resource identifiers (i.e., labels) in GMPLS As is common with other resource identifiers (i.e., labels) in GMPLS
signaling, it must be possible for the head-end LSP when sending a signaling, it must be possible for the head-end node when sending a
Path message to suggest or require the central frequency to be used Path message to suggest or require the central frequency to be used
for the LSP. Furthermore, for bidirectional LSPs, the Path message for the LSP. Furthermore, for bidirectional LSPs, the Path message
MUST be able to specify the central frequency to be used for reverse MUST be able to specify the central frequency to be used for reverse
direction traffic. direction traffic.
As described in [G.694.1], the allowed frequency slots for the As described in [G.694.1], the allowed frequency slots for the
flexible DWDM grid have a nominal central frequency (in THz) defined flexible DWDM grid have a nominal central frequency (in THz) defined
by: by:
193.1 + n * 0.00625 193.1 + n * 0.00625
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the Flexi-Grid in Lambda Switched Capable (LSC) Label the Flexi-Grid in Lambda Switched Capable (LSC) Label
Switching Routers", draft-ietf-ccamp-flexigrid-lambda- Switching Routers", draft-ietf-ccamp-flexigrid-lambda-
label, work in progress. label, work in progress.
10.2. Informative References 10.2. Informative References
[RFC3945] Mannie, E., "Generalized Multi-Protocol Label Switching [RFC3945] Mannie, E., "Generalized Multi-Protocol Label Switching
(GMPLS)" Architecture, RFC3945, October 2004. (GMPLS)" Architecture, RFC3945, October 2004.
[RFC2205] Braden, R., Zhang L., Berson, S., Herzog, S. and S. Jamin, [RFC2205] Braden, R., Zhang L., Berson, S., Herzog, S. and S. Jamin,
"Resource ReServation Protocol (RSVP) -- Version 1, "Resource ReServation Protocol (RSVP) - Version 1,
Functional Specification", RFC2205, September 1997. Functional Specification", RFC2205, September 1997.
[RFC5920] L. Fang et al., "Security Framework for MPLS and GMPLS [RFC5920] L. Fang et al., "Security Framework for MPLS and GMPLS
Networks", RFC 5920, July 2010. Networks", RFC 5920, July 2010.
[RFC6163] Y. Lee, G. Bernstein and W. Imajuku, "Framework for GMPLS [RFC6163] Y. Lee, G. Bernstein and W. Imajuku, "Framework for GMPLS
and Path Computation Element (PCE) Control of Wavelength and Path Computation Element (PCE) Control of Wavelength
Switched Optical Networks (WSONs)", RFC 6163, April 2011. Switched Optical Networks (WSONs)", RFC 6163, April 2011.
[RFC6982] Sheffer, Y. and A. Farrel, "Improving Awareness of Running [RFC6982] Sheffer, Y. and A. Farrel, "Improving Awareness of Running
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