Date: Tue, 10 Aug 2004 17:11:53 -0400 From: Mike Tancsa <mike@sentex.net> To: "Marc G. Fournier" <scrappy@hub.org>, freebsd-stable@freebsd.org Cc: freebsd-net@freebsd.org Subject: Re: em driver worse then fxp driver ... why? Message-ID: <6.1.2.0.0.20040810170223.10436e60@64.7.153.2> In-Reply-To: <20040810173211.V776@ganymede.hub.org> References: <20040810173211.V776@ganymede.hub.org>
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At 04:37 PM 10/08/2004, Marc G. Fournier wrote:
>I have 5 servers sitting on a Linksys 10/100 switch ... 4 of the 5 are
>running fxp0 ethernet, while the 5th is running em ... and the 5th
>performs atrociously:
>
>neptune# netstat -ni | head
>Name Mtu Network Address Ipkts Ierrs Opkts
>Oerrs Coll
>em0 1500 <Link#1> 00:07:e9:05:1b:2e 36915965 10306 28888840 1
>10858513
>
>I've tried in bth half and full duplex mode .. full duplex, Ierrs climbs,
>half-duplex, Collisions climb ...
if its unmanaged, autoneg is all that will work. Try that and see if the
errors climb. If you are still seeing errors check the cables. There are
occasionally incompatibilities between certain NICs and switches, but thats
pretty rare see /usr/src/sys/dev/em/README
---Mike
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