Re: OT crossover cable speed
Ühel ilusal päeval [26.03.2002] kirjutas dman <dman@dman.ddts.net>:
> On Mon, Mar 25, 2002 at 06:50:06AM -0500, Jason M. Harvey wrote:
> | On Mon, Mar 25, 2002 at 01:16:01AM -0800, Sean 'Shaleh' Perry wrote:
> | |
> | | On 25-Mar-2002 Rob VanFleet wrote:
> | | > Sorry this has nothing to do with Debian, but I'm at a loss as to where
> | | > else to ask (if it matters, both machines are running Debian <g>).
> | | >
> | | > I am looking to connect two machines, one will be connected to the
> | | > outside network, the other connected to it via a second NIC. I really
> | | > don't want to use a switch for just two machines, but I am wondering if
> | | > a crossover cable has any speed disadvantages as opposed to a small
> | | > switch. These machines will constantly be transferring data, so I would
> | | > like the connection to be as fast as possible (limited by the NICs to
> | | > 100 Mbs).
> | |
> | | should go as fast as the wire allows.
> |
> | i agree. a crossover cable is just the same as a straight cable, with
> | just 4 wires going to different pins.... but the resistance is still the
> | same.
>
> Right.
>
> | just a guess here, but thinking of resistance in the wire, crossover
> | may have less resistance than a switch (if it matters).
>
> I don't think it matters since the switch has its own power source.
> If the machines are separated by a long distance, having one or more
> switches would improve performance because a clean signal will always
> be emitted from the "far" side even if the incoming signal is a little
> dirty.
>
> If the machines are close together, then the only practical difference
> you'll notice is the cost (time and money) of locating and installing
> the hardware. Hmm, the switch would use some more power too (for your
> utility bill).
Hei!
And don't forget, that although switches are very fast, they consume a
little amount of time, when they are reading the ethernet frame and
analyzing it. Switch has to make a lot of decicions, before it can
repeat the ethernet frame on one of its ports.
Namarie!
Juhan
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