[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
new draft about signaling for a bidirectionl lightpath
We posted a new draft about GMPLS signaling for a bidirectional
lightpath setup as follows.
Title : Extensions to GMPLS RSVP-TE for Bidirectional Lightpath with
the Same Wavelength
Authors : S. Xu, H. Harai, and D. King
Abstract: For bidirectional lightpaths provisioning, in the case of
optical nodes that do not support wavelength conversion, it would be
necessary to use the same wavelength along the route on each
direction. In certain optical network scenarios, the use of the same
wavelength on both directions would be advantageous. For instance,
some type of ROADMs may add/drop the same wavelength
simultaneously. In another case, the users' optical end nodes are
equipped with fixed-wavelength transponders.
This document describes extensions to RSVP-TE signaling for
bidirectional wavelength lightpaths that require the same wavelength on
both directions. By using an LSP_ATTRIBUTES object defined in [RFC4420],
the extensions enable the new type lightpaths to support the low cost
configuration at users' optical end nodes.
We believe that selecting a single wavelength on both directions for a
bidirectional LSP is very real. And our suggestion in this draft is a
We appreciate your comments and feedbacks.
With best regards,
Hiroaki Harai, Ph.D. (http://nag.nict.go.jp/)
Network Architecture Group, New Generation Network Research Center
National Institute of Information and Communications Technology (NICT), JAPAN.
Email: email@example.com; Phone: +81-42-327-5418; FAX: +81-42-327-6680