43 ms·
A common mistake back in the early days of Ethernet was to wire them as four sequential pairs, instead of the required (1-2) (3-6) (4-5) (7-8). This worked most
by tonyarkles 10y ago
A common mistake back in the early days of Ethernet was to wire them as four sequential pairs, instead of the required (1-2) (3-6) (4-5) (7-8). This worked most of the time on 10BaseT networks, but would get flakey at 100Mbit.
If they got the pairs wrong at the wall jacks, there's not much you can do without repatching the whole thing. If they realized that they could make short cables that fixed it so that the pairs were mapped properly to port pins, that's quite clever in my books!
- pinebox 10y agoAt one of my local universities (also in the midwest US) ethernet jacks in the dorms were intentionally miswired so that only cables supplied by the university (and more specifically, their favored vendor) would work. Of course you could always make your own cable, but this was in the 90's, when the tool for that was very expensive.