re: "the latest CPL technology from Nortel is a real breakthrough, for once a vendor has listened and understood the challenges for operators and actively addressed our concerns."
When CPL was appeared I found its architecture refreshingly straightforward, as you've also noted, which was best demonstrated (to me, at least) by Kees Neggers within SURFnet6 throughout the Netherlands about three years ago (thus allowing him to offload boatloads of Layer3 gear).
I'm not sure which issue of the Cook Report it was in, but the details of
Frank, Agreed, the infinera platform is very good also. thanks for he link. Neil. -----Original Message----- From: Frank Coluccio [mailto:frank@dticonsulting.com] Sent: 29 April 2008 20:31 To: NANOG; Neil J. McRae; Frank Coluccio Subject: Re: [NANOG] DWDM ps - a 2007 updated prezo on SURFnet6's DWDM network presented by Erik-Jan Bos: http://www.ces.net/doc/seminars/cef2007/p/bos.ppt -- On Tue Apr 29 15:05 , Frank Coluccio sent: this
SURFnet6 deployment were captured in an interview of Neggers quite nicely by Gordon Cook in one of his reports during that era.
During the intervening three years, however, advancements in dispersion management have been introduced and opened the door for some new players, such as Infinera, whose use of electronic dispersion compensation (EDC) in its WDM platforms has now given it somewhat of an edge, or so it seems at the moment, based on the market share it has gained in a very short time. I'm hardly suggesting that Infinera trumps the former CPL approach across all areas of design consideration, but only that it's an approach that merits investigation.
I should note that Infinera went diametrically against the grain of the "all-optical" holy grail that is commonly sought by many, and actually leverages its ability to perform functions in the 'electronic' domain a lot more efficiently than other vendors have been capable of achieving in the purely optical domain, thus positioning itself in a category that's pretty much all its own today. I'd be eager to read comments and criticisms from anyone who's had actual experience with its wares.
Frank A. Coluccio DTI Consulting Inc. 212-587-8150 Office 347-526-6788 Mobile
On Fri Apr 25 9:31 , "Neil J. McRae" sent:
The current technologies for DWDM have really made it technology that's reasonably straight forward to deploy. The last generation was a nightmare!
Tuneable optics, dispersion compensation, and ROADM have made a substantial difference to deploying and operating DWDM networks.
I had experience with the former generation system from Nortel which although very reliable it was very resource intensive to deploy new services, the latest CPL technology from Nortel is a real breakthrough, for once a vendor has listened and understood the challenges for operators and actively addressed our concerns.
-----Original Message----- From: Scott E. MacKenzie [smackenzie@qf.org.qa','','','')">smackenzie@qf.org.qa] Sent: Friday, April 25, 2008 4:00 AM To: NANOG Subject: [NANOG] DWDM
Does anyone know where I can locate a list of DWDM networks deployed for Education, Science & Research, and Commercialization?
We need to determine the practicality of DWDM use...
Scott
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