[NANOG] DWDM

Neil J. McRae neil at DOMINO.ORG
Tue Apr 29 15:19:10 CDT 2008


Frank,
Agreed, the infinera platform is very good also.
thanks for he link.

Neil.

-----Original Message-----
From: Frank Coluccio [mailto:frank at 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:

>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
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 at qf.org.qa','','','')">smackenzie at 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 
>>
>>
>>
>>_______________________________________________
>>NANOG mailing list
>>NANOG at nanog.org
>>http://mailman.nanog.org/mailman/listinfo/nanog
>
>
>
>_______________________________________________
>NANOG mailing list
>NANOG at nanog.org
>http://mailman.nanog.org/mailman/listinfo/nanog



_______________________________________________
NANOG mailing list
NANOG at nanog.org
http://mailman.nanog.org/mailman/listinfo/nanog





More information about the NANOG mailing list