I may be missing something here, but if I'm reading this correctly, I believe you're planning to buy multimode fiber. Based on my experience, I believe you're going to definitely want single mode, so that you can run 1G for now, and 10G later by just swapping transceivers. I'm pretty certain that if you put multimode under the golf course now, you're going to be limited physically to 1G, no matter what transceiver you use.
Any time I undergo a fiber project, I always make sure I match up fiber, transceivers, Ethernet standard, and my switches in advance. This may not be an issue for you, but I've run into situations where I had a fiber and transceivers to function with a particular standard, only to discover later that while electrically compatible, the switch wouldn't support it. So, for example, it sounds to me like you want: Single mode fiber running 1000BASE-LX, with the ability to upgrade to 10GBASE-LR later. Hope that helps. Jeremy On Wed, Nov 2, 2011 at 12:03 PM, Simón Ruiz <[email protected]> wrote: > > It's possible they might get there. Engineers are pretty creative people > > about getting > > around the perceived limits of reality. > > That's kind of how I'd like to interpret it: that while multi-mode > will always be cheaper for short runs (due to the ability to use > dimmer transceivers) and slower for long tuns (due to the multi-modal > dispersion problem) than single-mode. *But* maybe that won't matter so > much, since we tend to be comfortable using "one-notch below the > maximum" speed at any given time. > > > So one thing you can do is to run a cable with multiple multi-mode > fibers. > > Light one > > strand on gigabit, then if that link starts getting saturated, light a > > second and bond > > the links at the switch. > > Already planning on this. > > Rather than trying to have a single high-speed link between two "core > switches"—one at each campus—and distributing bandwidth out from > there, I intend to have multiple switches (2 to start, then more) at > campus B Gigabit linked to a "core switch" at campus A which will have > several, bonded, copper Gigabit links to our server switch. > > Thanks to both Andrew and Rob for your thoughts! > > _______________________________________________ > Fwlug mailing list > [email protected] > http://mail.fortwaynelug.org/mailman/listinfo/fwlug_fortwaynelug.org > > This is a public list and all posts are archived publicly. Please keep > this in mind before posting. > -- Jeremy
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