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Compuer Gurus. Help setting up fiber optic LAN

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Compuer Gurus. Help setting up fiber optic LAN

Old 03-10-2007, 07:02 PM
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Default Compuer Gurus. Help setting up fiber optic LAN

I am trying to bring a divorced building into an existing copper infrastructure. I do not know what hardware I really need. I have no experience with F.O. I am doing my homework right now. The distance was not a factor in the decision but the number of new nodes and bandwidth is. There is a mulitplexer at each end right? And 2 cables for Tx and Rx right? What else do I need? Software or just Windows.
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Old 03-10-2007, 08:29 PM
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Default Re: Compuer Gurus. Help setting up fiber optic LAN

Are you talking about fiber optic or gigabit coper? How much bandwidth do you need? Software isn't necessary unless you want to manage your lan. ie, throttle certain users and give full bandwidth to others with voice or video needs.
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Old 03-10-2007, 08:37 PM
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Default Re: Compuer Gurus. Help setting up fiber optic LAN

The easiest way(s) are to either put a fiber GBIC on a 10/100/Gig-E switch or purchase a Media Converter to drop it whatever standard you are running. I use media converters from Transitions Networks at work. Here's their link - http://www.transition.com/TransitionNetworks/

You do not need any software, just equipment as I mentioned.

FYI - Gigabit Copper is more commonly known as "Gig-E" short for Gigabit Ethernet.
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Old 03-11-2007, 06:09 PM
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Default Re: Compuer Gurus. Help setting up fiber optic LAN

The problem is running all that copper (1 per node) back to the panel. The tubes are already full of telco and other stuff. I about a 1 Gig-E line between 2 switches. But I would have to replace the switches to accommodate it. Probably the drops from the servers that are 50 Ft. away from the switches as well. The modems are 50Ft away from those two. The two buildings are only 6 Ft apart but, there are a lot of loop-de-loop's in the cable route around the building. That starts adding up too.
I think I can reroute some cables to cut down on the run. That knocks off several hundred feet of cable.
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Old 03-11-2007, 06:21 PM
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Default Re: Compuer Gurus. Help setting up fiber optic LAN

how many users in the divorced building? are servers that will be used by the rest of the company once it's brought "into the fold"?
what brnad/kind of switches are/will be on either end?
distance does matter.. single mode fiber runs a lot further then multi mode, gig e is.. like a football field (if i remember right)
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Old 03-11-2007, 06:57 PM
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Default Re: Compuer Gurus. Help setting up fiber optic LAN

4 new users right now. Same servers. The switches are brand X. Current ones are 10/100 auto. Servers have 1000 on board NIC. The hubs have to cascade, right? There is only one with enough sockets for everything right now.
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Old 03-12-2007, 06:36 PM
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Default Re: Compuer Gurus. Help setting up fiber optic LAN

Depending on the distance, did you consider using a 5.9 point to point wireless connection?
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Old 03-13-2007, 09:40 AM
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Default RE: Compuer Gurus. Help setting up fiber optic LAN

Either wireless or fiber.

DO NOT - DO NOT - DO NOT use copper between buildings. I know people do it all the time but there is extreme risk involved in doing so unless you're using equipment specifically designed for this application (e.g. carrier-grade telco stuff)

If you have a ground offset between the buildings (and this is quite common!) you can get HUGE currents in those cables which will burn them up and/or present a hazardous condition to personnel.

Fiber can be done for gigabit ethernet or you can go with a telco carrier-style infrastructure. The gigabit ethernet (or 100BaseFX) uses one fiber for each direction (two in total); carrier-style ring topologies require four (two rings, one in and one out in each direction) but give you 100% redundancy - one fiber break and it still works.

Wireless is a perfectly valid option and is available in 155mbps ATM as well as gigabit and 100BaseTX ethernet bridge products. Wireless requires a clear line-of-sight.
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Old 03-13-2007, 11:34 PM
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Default Re: Compuer Gurus. Help setting up fiber optic LAN

Thanks, Bitefish. I read somewhere about a grounding potential damaging hardware but did not realize the severity of the problem.
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Old 03-14-2007, 12:43 AM
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Default RE: Compuer Gurus. Help setting up fiber optic LAN

Fiber ATM has certain advantages, one of them being that you can use the glass to transport telephone over there too, if you have the proper gear for it.

Note though that ATM-style stuff is not cheap.

The least expensive option for network connectivity only on a "bang for the buck" basis is likely a gigabit ethernet fiber transceiver (802.3z) on each end. If that's not fast enough there are 10gb standards as well, at correspondingly higher prices. I strongly recommend two fibers - one for each direction - although there are "one fiber" products out there that mux the traffic both ways on one strand.

For 1000BaseT fiber one option is here:
http://www.tccomm.com/TC3300.htm

About $1k/end, depending on options.
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