Odd network issue ... *very* slow scp between two servers

Marc G. Fournier scrappy at hub.org
Sun Mar 7 15:37:55 PST 2004


On Sat, 6 Mar 2004, Tim Wilde wrote:

> On Sat, 6 Mar 2004, Marc G. Fournier wrote:
>
> > I have two servers on the same network switch, sitting one on top of the
> > other ... one is running an em (Dual-Xeon 2.4Ghz) device, the other an fxp
> > (Dual-PIII 1.3Ghz) device ...
>
> Is it a Cisco Catalyst switch?  If so, you need to switch the em's to
> autoselect, on both the server and switch end.  For some reason, the em
> driver will not properly lock down its rate when talking to a Cisco
> Catalyst switch.  At least, I had an identical problem with em's talking
> to a Catalyst 2950 and that was the fix I came up with.  Give it a try and
> see how your results go.

Note that forcing it to 100baseT half-duplex (or 10baseT/UTP half-duplex)
corrects the problem ... turns out it is only in full-duplex mode that its
hosed ...

----
Marc G. Fournier           Hub.Org Networking Services (http://www.hub.org)
Email: scrappy at hub.org           Yahoo!: yscrappy              ICQ: 7615664


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