nanog mailing list archives
Re: Muni fiber: L1 or L2?
From: Scott Helms <khelms () zcorum com>
Date: Mon, 4 Feb 2013 16:07:56 -0500
On Mon, Feb 4, 2013 at 6:58 AM, Masataka Ohta < mohta () necom830 hpcl titech ac jp> wrote:
Scott Helms wrote:Is it more expensive to home-run every home than to put splitters in the neighborhood? Yes. Is it enough more expensive that the tradeoffscannot beovercome? I remain unconvinced.This completely depends on the area and the goals of the network. Inmostcases for muni networks back hauling everything is more expensive.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. What is SS?
As most of the cost is cable laying, which is little sensitive to the number of twisted pairs or fibers in the cable, PON, with splitters and lengthy drop cables (if you want a fiber shared by many subscribers, you need a lengthy drop cables from a splitter), can not be less expensive than SS.
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.
PON, which is expensive, is preferred by some carriers merely because it makes competition impossible.
PON is preferred by carriers because it works in their existing equipment and often with their existing fiber plant. Planning for a carrier network is very different (different requirements) than for a greenfield muni system.
Masataka Ohta
-- Scott Helms Vice President of Technology ZCorum (678) 507-5000 -------------------------------- http://twitter.com/kscotthelms --------------------------------
Current thread:
- Re: Muni fiber: L1 or L2?, (continued)
- Re: Muni fiber: L1 or L2? Edward Dore (Feb 16)
- Re: Muni fiber: L1 or L2? Masataka Ohta (Feb 11)
- Re: Muni fiber: L1 or L2? Warren Bailey (Feb 11)
- Re: Muni fiber: L1 or L2? Stephen Sprunk (Feb 11)
- Re: Muni fiber: L1 or L2? Warren Bailey (Feb 11)
- Re: Muni fiber: L1 or L2? Warren Bailey (Feb 11)
- Re: Muni fiber: L1 or L2? Scott Helms (Feb 12)
- Re: Muni fiber: L1 or L2? Scott Helms (Feb 11)
- Message not available
- Re: Muni fiber: L1 or L2? Scott Helms (Feb 03)
- Re: Muni fiber: L1 or L2? Masataka Ohta (Feb 04)
- Re: Muni fiber: L1 or L2? Scott Helms (Feb 04)
- Re: Muni fiber: L1 or L2? Masataka Ohta (Feb 04)
- Re: Muni fiber: L1 or L2? Scott Helms (Feb 04)
- Re: Muni fiber: L1 or L2? Scott Helms (Feb 04)
- Re: Muni fiber: L1 or L2? Masataka Ohta (Feb 04)
- Re: Muni fiber: L1 or L2? Scott Helms (Feb 04)
- Re: Muni fiber: L1 or L2? Jean-Francois Mezei (Feb 04)
- Re: Muni fiber: L1 or L2? Masataka Ohta (Feb 05)
- RE: Muni fiber: L1 or L2? Eric Wieling (Feb 05)
- Re: Muni fiber: L1 or L2? Masataka Ohta (Feb 05)
- RE: Muni fiber: L1 or L2? Eric Wieling (Feb 05)