Previously, Steve Rude (steve@rudedogg.com) 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 doug@e-xpedient.com 216.373.8517 - DID 216.401.5888 - Cell