On May 12, 21:49, Tony Duell wrote:
> >
> > > All you need is a AUI --> Thinnet (10Base2) or AUI --> 10Bt
tranceiver.
> >
> > I get the impression that two-node 10Bt networking can be done with
> > nothing but a crossover cable. (IE the chaining connection on hubs is
> > just a crossover) Is this possibly true, using just the cable?
>
> I beleive that one is possible. In fact I've seen crossover cables on
> sale for this purpose (this doesn't mean they _work_ of course :-)).
Assuming they're wired correctly, they'll work fine. This is all a normal
MDI-X port on a hub does. Internally, the hub has the same type of
tranceiver that a PC NIC (or any other 10baseT device) has, the only
difference is that the hub has the crossover built-in (hence the label
MDI-X). The "uplink" port on a hub is an MDI port, ie one without a
crossover. The point is that the connections (Rx and Tx) on ANY
10/100baseT link must be crossed over at one end with respect to the other
(think DTE and DCE if you're used to serial line terminology).
You can connect two hubs by using a straight cable from the MDU "uplink"
port o one to any normal MDI-X port on the other, or by using two normal
MDI-X ports with a crossover cable, or by using two MDI "uplink" ports with
a crossover cable. Similarly you can connect two computers (or anything
else) by using a crossover cable to connect their MDI ports.
The only things that won't work on are 10baseT4, VGAnyLAN, or Gigabit ports
-- all of which use all 4 pairs.
--
Pete Peter Turnbull
Network Manager
University of York
Received on Sun May 12 2002 - 17:43:31 BST