draft-ietf-ccamp-flexible-grid-ospf-ext-00.txt   draft-ietf-ccamp-flexible-grid-ospf-ext-01.txt 
Network Working Group Xian Zhang Network Working Group Xian Zhang
Internet-Draft Haomian Zheng Internet-Draft Haomian Zheng
Intended status: Informational Huawei Intended status: Informational Huawei
Ramon Casellas Ramon Casellas
CTTC CTTC
O. Gonzalez de Dios O. Gonzalez de Dios
Telefonica Telefonica
D. Ceccarelli D. Ceccarelli
Ericsson Ericsson
Expires: December 16, 2014 June 16, 2014 Expires: June 16, 2015 December 16, 2014
GMPLS OSPF-TE Extensions in support of Flexible Grid GMPLS OSPF-TE Extensions in support of Flexible Grid
draft-ietf-ccamp-flexible-grid-ospf-ext-00.txt draft-ietf-ccamp-flexible-grid-ospf-ext-01.txt
Abstract Abstract
This memo describes the OSPF-TE extensions in support of GMPLS This memo describes the OSPF-TE extensions in support of GMPLS
control of networks that include devices that use the new flexible control of networks that include devices that use the new flexible
optical grid. 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 Flexi-grid Routing.......................... 3 3. Requirements for Flexi-grid Routing .......................... 3
3.1. Available Frequency Ranges.............................. 4 3.1. Available Frequency Ranges .............................. 4
3.2. Application Compliance Considerations................... 5 3.2. Application Compliance Considerations ................... 5
3.3. Comparison with Fixed-grid DWDM Links................... 6 3.3. Comparison with Fixed-grid DWDM Links ................... 6
4. Extensions .................................................. 6 4. Extensions .................................................. 6
4.1. ISCD for Flexi-grid..................................... 7 4.1. ISCD for Flexi-grid..................................... 7
4.2. Available Labels Set Sub-TLV............................ 7 4.2. Available Labels Set Sub-TLV ............................ 7
4.2.1. Inclusive/Exclusive Label Range.................... 7 4.2.1. Inclusive/Exclusive Label Range .................... 7
4.2.2. Inclusive/Exclusive Label Lists.................... 8 4.2.2. Inclusive/Exclusive Label Lists .................... 8
4.2.3. Bitmap ............................................ 8 4.2.3. Bitmap ............................................ 8
4.3. Extensions to Port Label Restriction sub-TLV............ 8 4.3. Extensions to Port Label Restriction sub-TLV ............ 8
4.4. Examples for Available Label Set Sub-TLV................ 9 4.4. Examples for Available Label Set Sub-TLV ................ 9
5. IANA Considerations ........................................ 10 5. IANA Considerations ........................................ 10
6. Implementation Status....................................... 10 6. Implementation Status....................................... 10
6.1.Centre Tecnologic de Telecomunicacions de Catalunya (CTTC)11 6.1. Centre Tecnologic de Telecomunicacions de Catalunya (CTTC)11
7. Acknowledgments ............................................ 12 7. Acknowledgments ............................................ 12
8. Security Considerations..................................... 12 8. Security Considerations ..................................... 12
9. References ................................................. 12 9. References ................................................. 12
9.1. Normative References................................... 12 9.1. Normative References ................................... 12
9.2. Informative References................................. 12 9.2. Informative References................................. 12
10. Authors' Addresses......................................... 14 10. Authors' Addresses ......................................... 14
11. Contributors' Addresses.................................... 14 11. Contributors' Addresses .................................... 14
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. The channel spacing is the frequency for defining applications. The channel spacing is the frequency
spacing between two allowed nominal central frequencies. All of the spacing between two allowed nominal central frequencies. All of the
wavelengths on a fiber should use different central frequencies and wavelengths on a fiber should use different central frequencies and
skipping to change at page 8, line 38 skipping to change at page 8, line 38
Port Label Restriction sub-TLV is defined in [GEN-ENCODE] and [GEN- Port Label Restriction sub-TLV is defined in [GEN-ENCODE] and [GEN-
OSPF]. It can be used to describe the label restrictions on a port. OSPF]. It can be used to describe the label restrictions on a port.
A new restriction type, the flexi-grid Restriction Type, is defined A new restriction type, the flexi-grid Restriction Type, is defined
here to specify the restrictions on a port to support flexi-grid. here to specify the restrictions on a port to support flexi-grid.
0 1 2 3 0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| MatrixID | RstType = TBA | Reserved | | MatrixID | RstType = TBA | Reserved |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| C.F.G | S.W.G | Min Width | Max Width | | C.F.G | S.W.G | Min Width | Reserved |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Max Width | Reserved |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
MatrixID (8 bits): As defined in [GEN-ENCODE]. MatrixID (8 bits): As defined in [GEN-ENCODE].
RstType (Restriction Type, 8 bits): Takes the value (TBD) to RstType (Restriction Type, 8 bits): Takes the value (TBD) to
indicate the restrictions on a port to support flexi-grid. indicate the restrictions on a port to support flexi-grid.
C.F.G (Central Frequency Granularity, 8 bits): A positive integer. C.F.G (Central Frequency Granularity, 8 bits): A positive integer.
Its value indicates the multiple of 6.25 GHz in terms of central Its value indicates the multiple of 6.25 GHz in terms of central
frequency granularity. frequency granularity.
S.W.G (Slot Width Granularity, 8 bits): A positive integer. Its S.W.G (Slot Width Granularity, 8 bits): A positive integer. Its
value indicates the multiple of 12.5 GHz in terms of slot width value indicates the multiple of 12.5 GHz in terms of slot width
granularity. granularity.
Min Width (8 bits): A positive integer. Its value indicates the Min Width (8 bits): A positive integer. Its value indicates the
multiple of 12.5 GHz in terms of the supported minimal slot width. multiple of 12.5 GHz in terms of the supported minimal slot width.
Max Width (8 bits): A positive integer. Its value indicates the Max Width (16 bits): A positive integer. Its value indicates the
multiple of 12.5 GHz in terms of the supported maximal slot width. multiple of 12.5 GHz in terms of the supported maximal slot width.
4.4. Examples for Available Label Set Sub-TLV 4.4. Examples for Available Label Set Sub-TLV
Figure 3 shows an example of available frequency range of a flexi- Figure 3 shows an example of available frequency range of a flexi-
grid DWDM link. grid DWDM link.
-9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11
...+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--... ...+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--...
|--Available Frequency Range--| |--Available Frequency Range--|
skipping to change at page 11, line 29 skipping to change at page 11, line 29
http://networks.cttc.es/experimental-testbeds/ http://networks.cttc.es/experimental-testbeds/
Brief Description: Experimental testbed implementation of Brief Description: Experimental testbed implementation of
GMPLS/PCE control plane. GMPLS/PCE control plane.
Level of Maturity: Implemented as extensions to a mature Level of Maturity: Implemented as extensions to a mature
GMLPS/PCE control plane. It is limited to research / prototyping GMLPS/PCE control plane. It is limited to research / prototyping
stages but it has been used successfully for more than the last five stages but it has been used successfully for more than the last five
years. years.
Coverage: Support for the 64 bit label [FLEX-LBL] for flexi-grid Coverage: Support for the 64 bit label [FLEC-LBL] for flexi-grid
as described in this document, with available label set encoded as as described in this document, with available label set encoded as
bitmap. It is expected that this implementation will evolve to follow the bitmap.
It is expected that this implementation will evolve to follow the
evolution of this document. evolution of this document.
Licensing: Proprietary Licensing: Proprietary
Implementation Experience: Implementation of this document Implementation Experience: Implementation of this document
reports no issues. General implementation experience has been reports no issues. General implementation experience has been
reported in a number of journal papers. Contact Ramon Casellas for reported in a number of journal papers. Contact Ramon Casellas for
more information or see http://networks.cttc.es/publications/? more information or see http://networks.cttc.es/publications/?
search=GMPLS&research_area=optical-networks-systems search=GMPLS&research_area=optical-networks-systems
skipping to change at page 12, line 23 skipping to change at page 12, line 23
than those discussed in [RFC3630], [RFC4203]. than those discussed in [RFC3630], [RFC4203].
9. References 9. References
9.1. Normative References 9.1. Normative References
[RFC2119] S. Bradner, "Key words for use in RFCs to indicate [RFC2119] S. Bradner, "Key words for use in RFCs to indicate
requirements levels", RFC 2119, March 1997. requirements levels", RFC 2119, March 1997.
[G.694.1] ITU-T Recommendation G.694.1 (revision 2), "Spectral grids [G.694.1] ITU-T Recommendation G.694.1 (revision 2), "Spectral grids
for WDM applications: DWDM frequency grid", June 2012. for WDM applications: DWDM frequency grid", February 2012.
[GEN-ENCODE] Bernstein, G., Lee, Y., Li, D., and W. Imajuku, [GEN-ENCODE] Bernstein, G., Lee, Y., Li, D., and W. Imajuku,
"General Network Element Constraint Encoding for GMPLS "General Network Element Constraint Encoding for GMPLS
Controlled Networks", draft-ietf-ccamp-general-constraint- Controlled Networks", draft-ietf-ccamp-general-constraint-
encode, work in progress. encode, work in progress.
[GEN-OSPF] Fatai Zhang, Y. Lee, Jianrui Han, G. Bernstein and Yunbin [GEN-OSPF] Fatai Zhang, Y. Lee, Jianrui Han, G. Bernstein and Yunbin
Xu, " OSPF-TE Extensions for General Network Element Xu, " OSPF-TE Extensions for General Network Element
Constraints ", draft-ietf-ccamp-gmpls-general-constraints- Constraints ", draft-ietf-ccamp-gmpls-general-constraints-
ospf-te, work in progress. ospf-te, work in progress.
skipping to change at page 13, line 10 skipping to change at page 13, line 10
[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.
[FLEX-SIG] F.Zhang et al, "RSVP-TE Signaling Extensions in support [FLEX-SIG] F.Zhang et al, "RSVP-TE Signaling Extensions in support
of Flexible-grid", draft-zhang-ccamp-flexible-grid-rsvp- of Flexible-grid", draft-zhang-ccamp-flexible-grid-rsvp-
te-ext, work in progress. te-ext, work in progress.
[FLEX-FWK] Gonzalez de Dios, O,, Casellas R., Zhang, F., Fu, X., [FLEX-FWK] Gonzalez de Dios, O,, Casellas R., Zhang, F., Fu, X.,
Ceccarelli, D., and I. Hussain, ''Framework and Ceccarelli, D., and I. Hussain, "Framework and
Requirements for GMPLS based control of Flexi-grid DWDM Requirements for GMPLS based control of Flexi-grid DWDM
networks', draft-ogrcetal-cammp-flexi-grid-fwk, work in networks', draft-ogrcetal-cammp-flexi-grid-fwk, work in
progress. progress.
[WSON-OSPF] Y. Lee and G. Bernstein, "GMPLS OSPF Enhancement for [WSON-OSPF] Y. Lee and G. Bernstein, "GMPLS OSPF Enhancement for
Signal and Network Element Compatibility for Wavelength Signal and Network Element Compatibility for Wavelength
Switched Optical Networks ", draft-ietf-ccamp-wson-signal- Switched Optical Networks ", draft-ietf-ccamp-wson-signal-
compatibility-ospf, work in progress. compatibility-ospf, work in progress.
10. Authors' Addresses 10. Authors' Addresses
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