[167900] in North American Network Operators' Group

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Re: Why are we fixated on Multimode fiber for high bandwidth

daemon@ATHENA.MIT.EDU (Jared Mauch)
Tue Dec 31 14:10:50 2013

From: Jared Mauch <jared@puck.nether.net>
In-Reply-To: <CALn8JwN5ZCxbndLrOtpQ-AqvamyckeBj8eX6oG_gfkkq3VsYrw@mail.gmail.com>
Date: Tue, 31 Dec 2013 14:08:36 -0500
To: eric clark <cabenth@gmail.com>
Cc: NANOG list <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org


On Dec 31, 2013, at 2:00 PM, eric clark <cabenth@gmail.com> wrote:

> Anyone know why the industry has their head stuck on MultiMode?

at 10G the optics costs are about 1/3 that of SMF (SR vs LR).

We tend to keep things SMF, but within many older datacenters MMF is =
broadly available and does meet the needs at a lower cost.

There seems to be a shifting trend as well in UPC vs APC connectors.

I think much of this problem is clearly articulated here: =
http://xkcd.com/927/

Everyones needs are a bit different.

- Jared=


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