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From: "Steven Levine" 
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@Date: Fri, 22 Aug 2003 08:54:50 -0700
Subject: Re: nic for server
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In , on
08/21/03 
   at 05:37 PM, "Bart Bremmers"  said:

>To sum up then, the NIC isn't as important as changing my hub to a
>switch. right?

In your case, probably.

The IP packets have to pass through each piece of equipment.  The slowest
piece of equipment is going to determine the overall throughput.  I factor
in the collision rate when estimating speed.

>My DSH-8 hub has an uplink connection which I use for my router (which is
>how we connect  to the internet).

As others have said, this is not a problem.  I've yet to see a switch
without an uplink port.  On some, the port is dedicated.  On others, it
can be switched between uplink and passthru, which basically just swaps
the wires around inside the switch rather than inside the cable.

>Looking at the D-Link site, it appears
>the DSS series would apply to me. But  they do not specifically mention
>the uplink connection. Any model recommendations?

It's unlikely that it does not have an uplink connection.  These are
needed both to ease connecting to routers and to cascade switches in
larger installations.

>Ralph, would the Ark units have the uplink port? Or do I gather from your
>post that the router  can go in any port on the switch? I saw the
>AES-324R at  http://store.yahoo.com/avready/ark1024pornw.html
>It's $89 (US dollars presumably) which doesn't sound bad at all.

Not bad at all for 24 ports.  Also, this is a pretty high end unit. 
MDI/MDIX means the ports autosense the cable type and handle the crossover
automatically.

>The three switches above appear to be out of stock.

Could be the site is selling older models.

FWIW, switches do experience collisions and they do create collisions.  It
just happens a lot less often than for a port because a switch learns
which MAC addresses are connected to which ports.  In the best of all
possible worlds, this will only happen when the NIC is first connected to
the switch.  However, there will always be cases where the switch must
forget the port/MAC association and start over.

Steven

-- 
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"Steven Levine"   MR2/ICE 2.37
#10183 Warp4/FP15/14.093c_W4
www.scoug.com irc.webbnet.info irc.fyrelizard.org #scoug (Wed 7pm PST)
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