And not all switches do as good a job as others. Where I used to work, we
had three 3-Com 10/100 switches, but the 10Mb cards would disappear off the
network after a while. Turning the switches off then on would make them come
back, but then they'd die after a while again. Strangely enough, a cheap
genius 10/100 switch seemed to do a better job, but it may have been
dependent on our network.

In the end we fixed our problem by making the linux machine a router, and
kept the 100Mb and 10Mb on two different subnets. (Most of the traffic was
to/from the linux machine anyway, so it didn't really increase latency.)

 - Mark

> You can mix and match, yes. However, if you have a simple hub, everything
> connected to taht hub will drop to the slowest common denominator,
> i.e. you're wasting your 100M cards. You want a switch, which adopts to
> speed individually on each port. I have heard an 8-port one can be had for
> $200, but I'm not sure whether that's true. You probably want a 16 anyway.
>
> Volker

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