nanog mailing list archives

Re: fast ethernet limits


From: Brian <bri () sonicboom org>
Date: Fri, 10 Jan 2003 14:14:09 -0800 (PST)


just go mm fiber..

        Bri


On Fri, 10 Jan 2003, Joel Jaeggli wrote:


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


--
--------------------------------------------------------------------------
Joel Jaeggli        Academic User Services   joelja () darkwing uoregon edu
--    PGP Key Fingerprint: 1DE9 8FCA 51FB 4195 B42A 9C32 A30D 121E      --
  In Dr. Johnson's famous dictionary patriotism is defined as the last
  resort of the scoundrel.  With all due respect to an enlightened but
  inferior lexicographer I beg to submit that it is the first.
                          -- Ambrose Bierce, "The Devil's Dictionary"




Current thread: