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Liaison Statement: Lambda Switch Capable Equipment

Submission Date: 2010-05-26
From: IETF RTG AREA (Adrian Farrel)
To: ITU-T SG15 Q6 (Greg Jones)
Cc:Yoichi Maeda
Peter Stassar
Peter Anslow
Adrian Farrel
Stewart Bryant
Patrik Falstrom
CCAMP Working Group
Lou Berger
Response Contact: Deborah Brungard
Lou Berger
Technical Contact: Deborah Brungard
Lou Berger
Purpose: For information
Attachments: (none)
Body:
Thank you for your liaison statement "COM 15 - LS 78 - E", "Lambda
Switch Capable Equipment", and your review of the CCAMP document
"Generalized Labels for G.694 Lambda-Switching Capable Label Switching
Routers".

Based on the suggestions provided by ITU-T Q6/15, the following
modifications were made in the CCAMP document:
 
   - Reference to G.694 has been removed in title of document.
   - Reference to "G.694.1" or "G.694.2" was adopted to replace
references to "G.694" in the draft accordingly.
   - The term "DWDM" was replaced by "DWDM multiplexer & demultiplexer"
in Clause 3 and Figure 1.
   - "tables" is replaced by "grids" in Clause 4.1.
   - The current format of the wavelength label is the following, a new
field "Identifier" is introduced.
    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
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |Grid | C.S   |    Identifier   |              n                |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  
As you noted, this is slightly different from the information ordering
in G.697. For protocol encoding, we have chosen this representation.
All the functionality is supported semantically.
   
We also would like to thank ITU-T Q6/15 for the comments on the
modelling of 1R, 2R and 3R regenerators in ITU-T Recommendation G.680.
We would appreciate it if you would continue to inform us on the
progress of ITU-T G.680.

We look forward to continuing our exchange of information with you on
these topics.

Deborah Brungard
Lou Berger

CCAMP Working Group co-Chairs