[160368] in North American Network Operators' Group
Re: Muni fiber: L1 or L2?
daemon@ATHENA.MIT.EDU (Masataka Ohta)
Mon Feb 4 17:59:52 2013
Date: Tue, 05 Feb 2013 07:58:22 +0900
From: Masataka Ohta <mohta@necom830.hpcl.titech.ac.jp>
To: Scott Helms <khelms@zcorum.com>
In-Reply-To: <CAMrdfRyscQ=QVwYZ3h0H3S0Zoe+Op+mxR0rjcGQBYKoJkSU4AA@mail.gmail.com>
Cc: NANOG <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Scott Helms wrote:
>> Bot of you are wrong.
>>
>> There is no reason fiber is more expensive than copper, which means SS
>> is cheap, as cheap as copper.
> Copper isn't cheap, its just there already.
Unbundled copper costs about $10/M or so, which means SS fiber
can't be more expensive.
> What is SS?
Single star.
> No, most of the cost isn't in running the cabling. Today most of the cost
> is in lighting the fiber, though that varies on where you're running the
> cabling and what gear you're using to light it.
On page 11 of google slide,
http://static.googleusercontent.com/external_content/untrusted_dlcp/research.google.com/en/us/pubs/archive/36936.pdf
it is stated that "Trenching consists of 70-80% of the total cost
for infrastructure build".
> PON is preferred by carriers because it works in their existing equipment
Their existing equipment was SS copper and MDF.
> Planning for a carrier network
> is very different (different requirements) than for a greenfield muni
> system.
Surely, transition from copper to fiber is not trivial, but it
helps a lot that fiber cables are thinner than copper cables.
Masataka Ohta
