[146475] in North American Network Operators' Group
RE: Cable standards question
daemon@ATHENA.MIT.EDU (Jason Gurtz)
Mon Nov 14 11:58:09 2011
Date: Mon, 14 Nov 2011 11:56:52 -0500
In-Reply-To: <Pine.LNX.4.64.1111141030480.1046@whammy.cluebyfour.org>
From: "Jason Gurtz" <jasongurtz@npumail.com>
To: <nanog@nanog.org>
Reply-To: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
> How you phrase the requirements depends on what you want the end =
result
> to be. Sorry to start this off with a wishy-washy statement, but when
> dealing with contractors, you have to be very specific with what you
> want, and stay involved during the project, to be sure the results are
> what you want.
This is *really* great advice. Standards are good, but it pays to have
due-diligence done about specific products and methods.
To the OP:
I witnessed a municipal fiber build-out, managed by someone in another
department who had essentially zero networking experience. His
consultants' all seemed experienced in conceptual layout, but not so =
much
the specific physical details. While this project was basically a =
success,
99% of the difficulties had to do with physical access details, site
remediation (power, racks, site-local cabling), and the specific fiber
related equipment such as splice boxes and patch panels.
For instance, we ended up with a 23" telco rack filled with 19" =
equipment
and 23" to 19" converter panels. General tidiness; a contractor left a
large splice-box laying on the floor in the midst of a slack-spool =
instead
of wall or rack mounting. Another contractor developed a spider's nest =
of
wiring in our server room instead of structured cabling. Specifying =
exact
rack sizes, specific cable management, mounting locations, etc... would
have helped a lot. Photos of the specific areas would have helped
immensely.
Some of the delivered patch panels were of low quality (many of the
connectors were faulty, requiring extra labor to clean and re-polish).
Caveat emptor! Find what the good brands are and specify (maybe others =
can
comment here). Go take a look at vendor websites like Middle Atlantic =
and
see what options are out there. Some things are just easier and more
convenient to use. The devil is in the details.
A building-to-building connection is clearly easier than lighting up a
city but you will still be stuck with what you get. You can never plan
enough.
~JasonG
