nanog mailing list archives

Re: fast ethernet limits


From: Joel Jaeggli <joelja () darkwing uoregon edu>
Date: Fri, 10 Jan 2003 13:09:42 -0800 (PST)


you need to put a fluke lanmeter or similar device (with tdr) to validate 
the cable... you may just need to reterminate the ends, but it's also 
likely that it's simply way out of spec.

joelja

On Fri, 10 Jan 2003, Steve Rude 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?

TIA for your help.

Ciao.

Steve Rude


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