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Ethernet connection over 120 metre distance

Last response: in Networking
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April 3, 2006 10:15:14 AM

I have a requirement to communicate over a 100MB/sec ethernet segment at a distance of 120 metres. I have read that the maximum segment length is 100m.

Would I need some form of repeater or other hardware to overcome the distance limit?

Can anyone recommend a solution?

Many thanks.
April 3, 2006 2:16:00 PM

If I am not mistaking, Optic Fiber is the way to go as it can cross longer distances at higher speeds. You'll find them on higher-end switches. The only problem, i believe is that it's not very flexible...

I remember reading from somewhere that standard optic fiber could go further then 4Km.
April 3, 2006 7:21:34 PM

Using a higher quality cable would solve the problem (such as cat6). Or putting an inline repeater in the line (like a hub) would also solve the problem.
Fiber wouldn't really be cost effective in this situation if all you need is a 100mb connection. Though even if you needed gigabit later I'm sure cat6 would handle it at that range just fine.
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April 4, 2006 6:59:29 PM

The least option, given that you probably already have CAT 5 cable, is to insert a powered switch at/before 90 metres - 100 metres really IS a max - never (well seldom) run at max!
April 4, 2006 7:25:52 PM

Quote:
putting an inline repeater in the line (like a hub) would also solve the problem.


It would need to be a switch. A simple hub or repeater (by definition) will, in fact, cure the single segment eletrical limitation of 100m. However, it will do nothing for the latency requirement of half-duplex ethernet segments (52us in 10Mb, 5.2us in 100Mb). In order for the "CD" part of CSMA/CD to work, there has to be a switch or some kind of store-and-forward, full-duplex device in the middle.
June 27, 2012 8:03:38 AM

spacedonkey101 said:
I have a requirement to communicate over a 100MB/sec ethernet segment at a distance of 120 metres. I have read that the maximum segment length is 100m.

Would I need some form of repeater or other hardware to overcome the distance limit?

Can anyone recommend a solution?

Many thanks.




Ok..1)Use converter to extend distance.
Ethernet to fiber optic
2)Use siwtches ro extend

you may look for:
CML Technology in JB www.cmltech.com.my
!