[H-GEN] network boggle

Christopher Biggs chris at stallion.oz.au
Sun Mar 25 20:46:47 EST 2001


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Rob Kearey <mammal at optushome.com.au> moved upon the face of the 'Net and spake thusly:

> Christopher Biggs wrote:
[snip]
> > Believe it or not, a 10/100 hub is a 10Mb hub and a 100Mb hub, with an
> > ethernet bridge between them
[snip]
> Hmmm. Are there different MAC addresses for each port at different
> speeds?

A hub/switch does not have a MAC address, it is a layer-1 device and
thus invisbile and non-addressible from the point-of-view of the
network layer (unless it is a "managed hub" with an IP stack).

I believe the hardware can be thought of as a "10 meg backplane" and
"100 meg backplane" joined by a bridge.  The physical RJ45 connectors
are connected to one or the other backplane, depending on which
protocol is detected by the "housekeeping" hardware.

--cjb

-- 
It's boring being a program when your only job is inserting a random .sig.
Muggins thinks I've put his .sig here, won't he be surprised...

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