[MLB-WIRELESS] Cat5 max length

[Tony Langdon, VK3JED]

At 10:56 PM 23/01/2003 +1100, Peter Hall wrote:

>How does collision domains have to do with distance?

Propagation delay.

>and why not a hub, after all it is a multi port repeater...? and they
>regenerate and retime the signal (presuming its powered of course)

Hubs regenerate all packets to all ports, switches only forward packets to 
the ports that need them, so you dramatically lower the collision rate on 
each port.

No doubt there's a better way to put it...

And as I said, I have proved it in practice.  Between the two floors of our 
office, there is 80m of Cat 5.  With switches at both ends, traffic passes 
smoothly between the floors.  Replace a switch with a hub, and the whole 
thing falls apart (total length goes way beyond 100m), as expected.

73 de Tony, VK3JED
http://vkradio.com


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