In reply to "Marc G. Fournier" <[EMAIL PROTECTED]> : > > 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 Co ll > em0 1500 <Link#1> 00:07:e9:05:1b:2e 36915965 10306 28888840 1 10858 513 > > I've tried in bth half and full duplex mode .. full duplex, Ierrs climbs, hal f-duplex, Collisions climb ...
I would expect collisions on a half-duplex link -- this is not
necessarily a Bad Thing.
It could be that the unmanaged switch is unable to talk full-duplex
to the em interface for some reason.....
Do you have throughput numbers for the two configs (half-duplex em,
full-duplex em, and full-duplex fxp)?
--eli
>
> the fxp devices are all running at full-duplex, and perform quite well:
>
> pluto# netstat -ni | head
> Name Mtu Network Address Ipkts Ierrs Opkts Oerrs Co
ll
> fxp0 1500 <Link#1> 00:03:47:bd:67:66 105856025 0 97330263 2
0
> jupiter# netstat -ni | head
> Name Mtu Network Address Ipkts Ierrs Opkts Oerrs Co
ll
> fxp0 1500 <Link#1> 00:03:47:30:a7:1b 28832141 0 29437148 0 0
> mars# netstat -ni | head
> Name Mtu Network Address Ipkts Ierrs Opkts Oerrs Co
ll
> fxp0 1500 <Link#1> 00:e0:81:21:d7:f6 34195201 0 29871571 0 0
> venus# netstat -ni | head
> Name Mtu Network Address Ipkts Ierrs Opkts Oerrs Co
ll
> fxp0 1500 <Link#1> 00:e0:81:29:56:5b 95579278 1 87014732 1 0
>
> Originally, it was explained that unmanaged switches tended to be
> problematic, but I'd expect some sort of uniformity in problems, but 'just
> the server with the em device' ...
>
> So, is there a bug in the em device driver that doesn't exist on the fxp0
> devices?
>
>
> ----
> Marc G. Fournier Hub.Org Networking Services (http://www.hub.org)
> Email: [EMAIL PROTECTED] Yahoo!: yscrappy ICQ: 7615664
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