[193532] in North American Network Operators' Group
Re: DWDM Optics cheaper than CWDM Optics?
daemon@ATHENA.MIT.EDU (Chuck Anderson)
Tue Jan 31 13:47:08 2017
X-Original-To: nanog@nanog.org
Date: Tue, 31 Jan 2017 13:46:58 -0500
From: Chuck Anderson <cra@WPI.EDU>
To: Karl Gerhard <karl_gerh@gmx.at>
Mail-Followup-To: Karl Gerhard <karl_gerh@gmx.at>, nanog@nanog.org
In-Reply-To: <0c64d2c9-1be1-0443-0432-b73b9ae49f46@gmx.at>
Cc: nanog@nanog.org
Errors-To: nanog-bounces@nanog.org
I've bought their DWDM 80km 10gig and they are working beautifully on
a couple amplified circuits with both Cisco and Juniper routers. I've
also bought gray optics and DACs. The only issue I've noted with some
QSFP+ DACs is some kind of programming issue where the serial number
is mis-read by some models of our Juniper switches. Another oddity is
that each end of some of our DACs have a separate serial number...we
just record both in our inventory tracking system.
On Tue, Jan 31, 2017 at 04:17:14PM +0100, Karl Gerhard wrote:
> Hello,
>
> fs.com offers DWDM optics that are cheaper than CWDM optics:
> CWDM 80km 10G for 600$ http://www.fs.com/c/cisco-cwdm-sfp-plus-2425?70-80km
> DWDM 80km 10G for 420$ http://www.fs.com/c/cisco-dwdm-sfp-plus-2485?70-80km
>
> This is significant.
> Is this for real? Has anybody bought their DWDM optics?
>
> Going with DWDM and passive Mux/Demux seems to be cheaper nowadays than going with CWDM.
>
> Regards
> Karl
