[54636] in North American Network Operators' Group
Re: fast ethernet limits
daemon@ATHENA.MIT.EDU (K. Scott Bethke)
Fri Jan 10 15:29:35 2003
From: "K. Scott Bethke" <kbethke@thruport.com>
To: <nanog@merit.edu>
Date: Fri, 10 Jan 2003 15:26:18 -0500
Errors-To: owner-nanog-outgoing@merit.edu
I used to see these exact same results when I would setup Wireless pop's on
towers taller than 400Ft. I was able to push the envelope a bit, however
when I saw the issues that you speak of, it was when I had bad crimps, or
sometimes a bad cable all together. Cat5 should be fine for this... if you
figure 12ft risers you are probably cutting it close on the distance but not
going over it.
-Scotty
----- Original Message -----
From: "Steve Rude" <steve@rudedogg.com>
To: <nanog@merit.edu>
Sent: Friday, January 10, 2003 3:01 PM
Subject: fast ethernet limits
>
> 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
>
>
