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Liaison statement
Lambda Switch Capable Equipment

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State Posted
Submitted Date 2010-05-26
From Group RTG
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>
Peter Stassar <peter.stassar@ties.itu.int>
Peter Anslow <panslow@ciena.com>
Adrian Farrel <adrian.farrel@huawei.com>
Stewart Bryant <stbryant@cisco.com>
Patrik Falstrom <paf@cisco.com>
CCAMP Working Group <ccamp@ietf.org>
Lou Berger <lberger@labn.net>
Response Contact Deborah Brungard <dbrungard@att.com>
Lou Berger <lberger@labn.net>
Technical Contact Deborah Brungard <dbrungard@att.com>
Lou Berger <lberger@labn.net>
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