Though I'm not certain on the actual pairs (I think
some one already specified the send and recieves) this
will work! It is great for testing purposes (cheap
man's tool kit) We have used them in the past
(reversing the send and recieve) to test cable runs
and nics and so on. There is no harm in testing this
(it's like connecting up two PCs or ports to an
incorrectly terminated cable run.)
Moe Tavakoli.
--- "Erick B." <[EMAIL PROTECTED]> wrote:
> Why do you need a ethernet loopback plug? I've never
> heard of or tried crossing the wires on a cable.
> Don't
> know what would happen. Use caution. It may not even
> come up or you might get a ton of collisions or
> smoke... which reminds me of a graphic I have. :)
>
> http://erickbe.home.dhs.org/etherkiller.jpg
>
> But seriously, if you're looking to just bring a
> Ethernet interface up with no hub, PC, etc hanging
> off
> it then do 'no keep' to turn keepalives off and that
> will bring it up but you won't be able to do much
> with
> it. Connecting the ethernet interface to a hub, PC,
> etc will bring it up as well as well as the cabling
> is
> good, etc.
>
> --- Tony van Ree <[EMAIL PROTECTED]> wrote:
> > Hi,
> >
> > I don't know that making a loopback is a good
> idea.
> > There is a fair chance you'll let the smoke out of
> > the interface chips. This makes them unusable. I
> > also don't know how you would address such a
> thing.
> >
> > Most IP stacks can be tested by pinging yourself.
> > There are various bits of software around that do
> > testing of NIC's. There are a number of packages
> > that inject traffic onto networks that will allow
> > testing.
> >
> > If you really want to send something up itself you
> > could try making a cable that connects pin 1 - 3
> and
> > pin 2 - 6. What it will do is not necessarily
> what
> > you need. But, don't let the smoke out of the
> > interface chips.
> >
> > Teunis
> > Hobart, Tasmania
> > Australia
> >
> >
> > On Tuesday, February 06, 2001 at 04:48:43 PM,
> > [EMAIL PROTECTED] wrote:
> >
> > > To all -
> > >
> > > Can someone please tell me how to make an
> external
> > ethernet loopback plug?
> > > If you know of a website with instructions,
> please
> > include the URL.
> > >
> > > Thanks,
> > > Matt
>
>
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_____________________________________________
Moe
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