A new Request for Comments is now available in online RFC libraries.
RFC 4054
Title: Impairments and Other Constraints on Optical Layer
Routing
Author(s): J. Strand, Ed., A. Chiu, Ed.
Status: Informational
Date: May 2005
Mailbox: jls@research.att.com, chiu@research.att.com
Pages: 29
Characters: 73327
Updates/Obsoletes/SeeAlso: None
I-D Tag: draft-ietf-ipo-impairments-04.txt
URL: ftp://ftp.rfc-editor.org/in-notes/rfc4054.txt
Optical networking poses a number challenges for Generalized
Multi-Protocol Label Switching (GMPLS). Fundamentally, optical
technology is an analog rather than digital technology whereby the
optical layer is lowest in the transport hierarchy and hence has an
intimate relationship with the physical geography of the network.
This contribution surveys some of the aspects of optical networks
that impact routing and identifies possible GMPLS responses for each:
(1) Constraints arising from the design of new software controllable
network elements, (2) Constraints in a single all-optical domain
without wavelength conversion, (3) Complications arising in more
complex networks incorporating both all-optical and opaque
architectures, and (4) Impacts of diversity constraints.
This document is a product of the IP Over Optical Working Group of the
IETF.
This memo provides information for the Internet community. It does
not specify an Internet standard of any kind. Distribution of this
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Joyce K. Reynolds and Sandy Ginoza
USC/Information Sciences Institute
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