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Re: recommendations for 8 port hub with no fan?!

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Ian Simpson (isimpson@ground-it.com)
Mon, 21 Feb 2000 14:59:21 -0800

I think this was discussed some time ago in this group. Your concept of a
switch may not be correct.

data path that repeats what it hears on one port to all the other ports. You
can have a dual speed hub like a 10/100. It is not a switch. It contains some
autodetection circuitry and will translate the data between the speeds. As the
data is being repeated to all ports, there can be collisions when input comes
in on two or more ports at the same time. It like more than one person talking
on a public address system at the same time.

A switch is smarter in that it knows where the data packets should go and only
transmits to one port at a time. So it can handle two or more streams of data
at once, if they are between two different pairs of machines. This is more like
a small telephone system where different conversations can be going on without
interference to each other.

I don't believe you can just put a 10/100 hub onto Rogers and hope it will
work. You need to put Rogers into a computer first, which can have two ethernet
ports and the second one can go to the hub. The print server should be able to
work off a 10 mbps port on the hub, but I have no experience in this area.

Julian Darley wrote:

> is the fact that it is a switch what allows it treat each port as either 10
> or 100 base T? i need a 10 for the rogers modem and presumably for the old
> intel netexpress print server which i am going to try to get working. but
> the computers are all on 100 base T. is it impossible to have an ordinary
> (and cheaper) hub which is able to switch each port between 10 & 100?
>
> the auto-sensing is clearly a benefit, if it is so, however i have been
> told that switches are slower than hubs when it comes to heavy data
> transfer, such as might occur while doing video editing. do you know if
> this true?

Ian Simpson 

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