[160220] in North American Network Operators' Group
Re: Muni fiber: L1 or L2?
daemon@ATHENA.MIT.EDU (Owen DeLong)
Sat Feb 2 16:29:15 2013
From: Owen DeLong <owen@delong.com>
In-Reply-To: <CAMrdfRyzCFGe77Wa+qyKdXwNTAyhQx8G3g9nXocNxPSkvrdrTA@mail.gmail.com>
Date: Sat, 2 Feb 2013 13:26:37 -0800
To: Scott Helms <khelms@zcorum.com>
Cc: NANOG <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Feb 2, 2013, at 12:07 PM, Scott Helms <khelms@zcorum.com> wrote:
> Owen,
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> A layer 1 architecture isn't going to be an economical option for the =
foreseeable future so opining on its value is a waste of time...its =
simple not feasible now or even 5 years from now because of costs. The =
optimal open access network (with current or near future technology) is =
well known. Its called Ethernet and the methods to do triple play and =
open access are well documented not to mention already in wide spread =
use. Trying to enforce a layer 1 approach would be more expensive than =
the attempts to make this work with Packet Over SONET or even ATM.
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> What is about a normal Ethernet deployment that you see as a negative? =
What problem are you tying to solve?
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Ethernet works just fine in the L1 solution I've proposed, so I'm not =
sure why you say it isn't economically viable to do so.
Owen
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> On Sat, Feb 2, 2013 at 1:04 PM, Owen DeLong <owen@delong.com> wrote:
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> On Feb 2, 2013, at 2:19 AM, Eugen Leitl <eugen@leitl.org> wrote:
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> > On Fri, Feb 01, 2013 at 04:43:56PM -0800, Leo Bicknell wrote:
> >
> >> The only place PON made any sense to me was extreme rural areas.
> >> If you could go 20km to a splitter and then hit 32 homes ~1km away
> >> (52km fiber pair length total), that was a win. If the homes are
> >> 2km from the CO, 32 pair (64km fiber pair length total) of home
> >> runs was cheaper than the savings on fiber, and then the cost of
> >> GPON splitters and equipment. I'm trying to figure out if my =
assessment
> >> is correct or not...
> >
> > Is there any specific reason why muni networks don't use 1-10 GBit
> > fiber mesh, using L3 switches in DSLAMs on every street corner?
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> Well, one reason is that, IMHO, the goal here is to provide a flexible
> L1 platform that will allow multiple competing providers a low barrier
> to entry to provide a multitude of competitive services.
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> Owen
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> --=20
> Scott Helms=20
> Vice President of Technology=20
> ZCorum=20
> (678) 507-5000=20
> --------------------------------=20
> http://twitter.com/kscotthelms=20
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