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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: fast ethernet limits
Previously, Steve Rude ([email protected]) wrote: > > Hi NANOG, > > Could someone please help me with a fast ethernet problem I am having. We > have a POP in a 27 floor building, and have a rj45 run from the the bottom > of the building (in the telco room) to the top of the building. We have > cisco switches on either end and we are seeing about 5-20% packet loss on > the trunk. > > Are we running into a distance limitation of fast ethernet, or are we suffering > from another problem? I read that 328 feet is the limitation of fast > ethernet. Is there anything short of getting a repeater for the cable run > that I can do to boost the signal? Well, when I don't have drawings or prints, I usually figure on 12 or 13ft per floor. So, figure somewhere between 324 and 351 feet from 1st floor to the ceiling on 27. For a run like this, you probably wanted to use fiber with media converters on each end. (Assuming you're not running switches with 100BaseFX ports or a GBIC slot...) -- Douglas A. Dever [email protected] 216.373.8517 - DID 216.401.5888 - Cell
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