nanog mailing list archives
Re: Muni fiber: L1 or L2?
From: Jason Baugher <jason () thebaughers com>
Date: Thu, 7 Feb 2013 13:21:07 -0600
In a greenfield build, cost difference for plant between PON and active will be negligible for field-based splitters, non-existent for CO-based splitters. If the company already has some fiber in the ground, then depending on where it is might drastically reduce build costs to use field-based splitters and PON. On the CO-side electronics, however... I think it's safe to say that you can do GPON under $100/port. AE is probably going to run close to $300/port. That's a pretty big cost difference, and if it were me I'd be looking pretty hard at a PON deployment for the majority of the customers along with a certain amount of fiber left over for those who need special services. On Thu, Feb 7, 2013 at 12:39 PM, Jay Ashworth <jra () baylink com> wrote:
----- Original Message -----From: "Masataka Ohta" <mohta () necom830 hpcl titech ac jp>Scott Helms wrote:Now, in general for greenfield builds I'd agree except for PON, which is in many cases cheaper than an Ethernet build.As PON require considerably longer drop cable from a splitters to 4 or 8 subscribers, it can not be cheaper than Ethernet, unless subscriber density is very high.Oh, ghod; we're not gonna go here, again, are we? Yes, a PON physical build can be somewhat cheaper, because it multiplexes your trunk cabling from 1pr per circuit to as many as 16-32pr per circuit on the trunk, allowing you to spec smaller cables. It does, however, limit you to being able to run PON capable L1 protocols over it, which may have *system*-cost implications over the life of the plant. But yes, the initial install *may* be a bit cheaper (depending on the tradeoff cost of the splitters vs the larger count fiber and the reduced size of patching facilities, and the relative cost of the access multiplexers, and... Hey, wait! How did I end up on Scott's side? :-) Cheers, -- jra -- Jay R. Ashworth Baylink jra () baylink com Designer The Things I Think RFC 2100 Ashworth & Associates http://baylink.pitas.com 2000 Land Rover DII St Petersburg FL USA #natog +1 727 647 1274
Current thread:
- Re: Muni fiber: L1 or L2?, (continued)
- Re: Muni fiber: L1 or L2? Alain Hebert (Feb 08)
- Re: Muni fiber: L1 or L2? Masataka Ohta (Feb 06)
- Re: Muni fiber: L1 or L2? Scott Helms (Feb 06)
- Re: Muni fiber: L1 or L2? Masataka Ohta (Feb 06)
- Re: Muni fiber: L1 or L2? Mikael Abrahamsson (Feb 07)
- Re: Muni fiber: L1 or L2? Scott Helms (Feb 07)
- Re: Muni fiber: L1 or L2? Mikael Abrahamsson (Feb 07)
- Re: Muni fiber: L1 or L2? Scott Helms (Feb 07)
- Re: Muni fiber: L1 or L2? Masataka Ohta (Feb 07)
- Re: Muni fiber: L1 or L2? Jay Ashworth (Feb 07)
- Re: Muni fiber: L1 or L2? Jason Baugher (Feb 07)
- Re: Muni fiber: L1 or L2? Mikael Abrahamsson (Feb 07)
- Re: Muni fiber: L1 or L2? Masataka Ohta (Feb 08)
- Re: Muni fiber: L1 or L2? Masataka Ohta (Feb 08)
- Re: Muni fiber: L1 or L2? Masataka Ohta (Feb 08)
- Re: Muni fiber: L1 or L2? Jean-Francois Mezei (Feb 08)
- Re: Muni fiber: L1 or L2? Masataka Ohta (Feb 08)
- Re: Muni fiber: L1 or L2? Robert E. Seastrom (Feb 08)
- Re: Muni fiber: L1 or L2? Masataka Ohta (Feb 09)
- Re: Muni fiber: L1 or L2? Robert E. Seastrom (Feb 09)
- Re: Muni fiber: L1 or L2? Masataka Ohta (Feb 09)