*BSD News Article 97662

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From: "Jose M. Alcaide" <jose@we.lc.ehu.es>
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: 3C590: no collisions?
Date: Fri, 13 Jun 1997 15:24:21 +0200
Organization: Universidad del Pais Vasco - Dpto. de Electricidad y Electronica
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<TT>A. Karl Heller wrote:</TT>
<BLOCKQUOTE TYPE=CITE><TT>Jose M. Alcaide (jose@we.lc.ehu.es) wrote:</TT>
<BR><TT>: Curiously, "netstat -i" _always_ shows 0 collisions on the vx0</TT>
<BR><TT>: ethernet interface (3COM 590, FreeBSD 2.2.1). However, other
hosts</TT>
<BR><TT>: attached to the same (saturated) segment have about 5% collision
rate.</TT>
<BR><TT>: I suspect that the vx driver does not increment the collision</TT>
<BR><TT>: counter. A colleague has another FreeBSD box with a 3C900 (also</TT>
<BR><TT>: vx driver), and it also shows 0 collisions. Isn't surprising?</TT>

<P><TT>&nbsp;VX on 2.1.5:</TT>

<P><TT>Name&nbsp; Mtu&nbsp;&nbsp; Network&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Address&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Ipkts Ierrs&nbsp;&nbsp;&nbsp; Opkts Oerrs&nbsp; Coll</TT>
<BR><TT>vx0&nbsp;&nbsp; 1500&nbsp; &lt;Link>00.a0.24.de.dc.83&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
128333705&nbsp;&nbsp;&nbsp; 33 120342519&nbsp;&nbsp; 922&nbsp; 1853</TT></BLOCKQUOTE>
<TT>Perhaps the 2.2.1's vx is broken? Here is my "netstat -i" ouput:</TT>

<P><TT>Name&nbsp; Mtu&nbsp;&nbsp; Network&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Address&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Ipkts Ierrs&nbsp;&nbsp;&nbsp; Opkts Oerrs&nbsp; Coll</TT>
<BR><TT>vx0&nbsp;&nbsp; 1500&nbsp; &lt;Link>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
00.60.97.90.3e.db&nbsp; 4022741&nbsp;&nbsp;&nbsp; 31&nbsp;&nbsp; 221483&nbsp;&nbsp;&nbsp;&nbsp;
0&nbsp;&nbsp;&nbsp;&nbsp; 0</TT>

<P><TT>-- JM</TT>
<BR><TT>------------------------------------------------------------------------</TT>
<BR><TT>Jose M. Alcaide&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
| E-mail:&nbsp;</TT><jose@we.lc.ehu.es>
<BR><TT>Universidad del Pais Vasco&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
| WWW:</TT>
<BR><TT>Dpto. de Electricidad y Electronica&nbsp;&nbsp;&nbsp;&nbsp; |&nbsp;
<A HREF="http://www.we.lc.ehu.es/~jose">http://www.we.lc.ehu.es/~jose</A></TT>
<BR><TT>Facultad de Ciencias - Campus de Lejona | Phone:&nbsp; +34-4-4647700
x2624</TT>
<BR><TT>48940 Lejona (Vizcaya) - SPAIN&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
| Fax:&nbsp;&nbsp;&nbsp; +34-4-4858139</TT>
<BR><TT>------------------------------------------------------------------------</TT></HTML>