Liaison statement
Lambda Switch Capable Equipment

State Posted
Posted Date 2010-05-26
From Group RTG
From Contact Adrian Farrel
To Group ITU-T-SG-15-Q6
To Contacts Greg Jones
CcYoichi 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)
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

Deborah Brungard
Lou Berger

CCAMP Working Group co-Chairs