Re: Muni fiber: L1 or L2?

[Scott Helms <khelms () zcorum com>]

Owen,

Cross connecting at layer 1 is what I'm saying isn't feasible.  If you want
to simply hand them a fiber then sell dark fiber or DWDM ports but trying
to create an architecture around PON or other splitters won't work because
PON splitters aren't compatible with other protocols.


On Sat, Feb 2, 2013 at 4:26 PM, Owen DeLong <owen () delong com> wrote:

> On Feb 2, 2013, at 12:07 PM, Scott Helms <khelms () zcorum com> wrote:
>
> Owen,
>
> 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.
>
> What is about a normal Ethernet deployment that you see as a negative?
>  What problem are you tying to solve?
>
>
> 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
>
>
> On Sat, Feb 2, 2013 at 1:04 PM, Owen DeLong <owen () delong com> wrote:
>
> > On Feb 2, 2013, at 2:19 AM, Eugen Leitl <eugen () leitl org> wrote:
> >
> > > 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?
> >
> > 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.
> >
> > Owen
>
>
> --
> Scott Helms
> Vice President of Technology
> ZCorum
> (678) 507-5000
> --------------------------------
> http://twitter.com/kscotthelms
> --------------------------------


-- 
Scott Helms
Vice President of Technology
ZCorum
(678) 507-5000
--------------------------------
http://twitter.com/kscotthelms
--------------------------------