nanog mailing list archives

Re: Low cost WDM gear


From: Faisal Imtiaz <faisal () snappytelecom net>
Date: Sat, 7 Feb 2015 21:22:57 +0000 (GMT)

Agreed, and to add one more little point..

Now they have DWDM & CWDM Muxes which have an even lower insertion loss .. (new products, currently not listed on the 
website).

.... Like they say.... "This is not your Father's Oldsmobile"...  Nothing hardly stands stills or remains the same in 
this business...

:)


Faisal Imtiaz
Snappy Internet & Telecom


----- Original Message -----
From: "Simon Lockhart" <simon () slimey org>
To: "NANOG" <nanog () nanog org>
Sent: Saturday, February 7, 2015 4:06:46 PM
Subject: Re: Low cost WDM gear

That's why I engage the engineering resources on their end to make sure the
chosen candidate will support the use case. I have now performed an A/B
comparison and the FiberStore gear is inferior. Excessive loss on the mux
and optics.

Just for comparison sake, I should say that we've bought passive DWDM muxes
and
SFP+'s from FibreStore, and we've had good experiences.

At the lower end of the market, production quality can definitely vary, which
means significant variances in optical losses. When we ordered from
FibreStore,
we specified the Optical Loss values that we were able to accept. They tested
the muxes before shipping, and selected the ones which fitted our
requirements.

Out of all the SFP's we bought, there were one or two DoA. FibreStore
replaced
this without issue.

I think the important thing to remember (particularly when buying "cheap") is
that you need to know what you're buying, and what the risks are. With this
in
mind, it's possible to save money and get a decent product with some careful
specification and management of the purchasing process.

If you're not too sure what you're after, then I'd suggest spending more
money
and buying from a supplier who's more set up to hand-hold you through the
process.

Simon



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