Liaison statement
Communication to ITU-T Q6/15 from IETF's CCAMP Working Group on Lambda Switch Capable Equipment
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State | Posted |
---|---|
Submitted Date | 2008-06-19 |
From Group | ccamp |
From Contact | Adrian Farrel |
To Group | ITU-T-SG-15-Q6 |
To Contacts | Greg Jones <greg.jones@itu.int> |
Cc | Yoichi Maeda <yoichi.maeda@ntt-at.co.jp> Gastone Bonaventura <gastone.bonaventura@telecomitalia.it> Peter Stassar <peter.stassar@ties.itu.int> Dave Ward <dward@cisco.com> Ross Callon <rcallon@juniper.net> Deborah Brungard <dbrungard@att.com> Scott Bradner <sob@harvard.edu> CCAMP Mailing List <ccamp@ops.ietf.org> |
Response Contact | Adrian Farrel <adrian@olddog.co.uk> Deborah Brungard <dbrungard@att.com> |
Technical Contact | Adrian Farrel <adrian@olddog.co.uk> Deborah Brungard <dbrungard@att.com> |
Purpose | For information |
Attachments | (None) |
Body |
The CCAMP Working Group of IETF would like to inform you of our work on enhancing GMPLS's support for Lambda Switching to support the new generation of Lambda Switch Capable equipment (e.g. ROADMs and PXCs). GMPLS provides a standard control plane in support of setting up (or restoring) a connection for multiple technologies (e.g. photonic, TDM (SONET/SDH), Ethernet). When GMPLS currently sets up an end-to-end wavelength connection (i.e. a Lambda LSP), the label that identifies the Lambda to use only has local context (between the neighboring nodes at the ends of the Lambda link). With the recent progress on optical network technology and the capability to activate/reroute an optical path over a larger domain comprised of DWDM, ROADMs, and PXCs (e.g. G.680 Appendix III application), CCAMP participants are interested to investigate these new applications to ensure the applicability of GMPLS protocols for connection setup and path computation and whether additional extensions are needed. The following document "Framework for GMPLS and PCE Control of Wavelength Switched Optical Networks (WSON)" provides a framework for our work effort: http://www.ietf.org/internet-drafts/draft-ietf-ccamp-wavelength-switched-framework-00.txt Note that CCAMP is concerned with the GMPLS protocol aspects for control of Lambda Switch Capable equipment. Work on characterization of optical signals, devices, and fibers is not within our scope. The first aspect being considered is a standardized wavelength representation. The proposal for the wavelength label representation is based on the grids used by G.694.1 and G.694.2. The following document "Generalized Labels for G.694 Lambda-Switching Capable Label Switching Routers" describes our proposal: http://www.ietf.org/internet-drafts/draft-ietf-ccamp-gmpls-g-694-lambda- labels-01.txt Both of these documents are in a very early phase of development. As we progress our work, we will be including aspects of G.680. We welcome any comments you may have at this time on our work and we would appreciate if you would keep us informed of your progress in this area. Best regards, Adrian Farrel and Deborah Brungard IETF CCAMP Working Group Co-Chairs |