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Date: Mon, 5 May 2008 15:49:38 +0400
From: Igor Zinovik <zinovik@kspu.karelia.ru>
To: freebsd-net@freebsd.org
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X-Comment-To: "Igor Zinovik"
Subject: Trying to find source of collisions
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X-List-Received-Date: Mon, 05 May 2008 13:29:39 -0000

         Hello, net@ readers.

I'm relatively new to freebsd networking so i'm asking here, because i
did not found information in man netstat.  I have a machine that suffers
from collisions.

Network interface status:
Name    Mtu Network       Address              Ipkts Ierrs    Opkts Oerrs  Coll
ed0    1500 <Link#1>      00:80:48:c6:a1:82 35885806     4 23583716     0 134590 
...
rl0    1500 <Link#2>      00:00:1c:dc:b8:d6 23455543     0 36137069     0     0 

This is ordinary RELENG_6_1, with ed0 and rl0 acting as gateway.  UTP
cat5 is connected to both NICs.

So i have three questions:
1. What can cause such big collisions number?  Bad UTP cable?  Bad NIC?
Misbeheaving switch?
2. Ierr -- seems that some input errors.  What are these errors and what
can cause them?
3. Should i ever bother about this issue?