Auto-MDIX
After reading the previous section, you might be concerned about when you are cabling
your network, you might make a critical mistake! Imagine, just one wrong type of cable,
and your entire LAN might fail to access key resources. Fortunately, there is great news
because of a new technology called Auto-MDIX. Auto-MDIX stands for automatic
medium-dependent interface crossover, a feature that lets the interface automatically discover
whether the wrong cable is installed. A switch that supports the Auto-MDIX feature
detects the wrong cable and causes the switch to swap the pair it uses for transmitting and
receiving. This solves the cabling problem, and the switch is able to communicate just fine
regardless of the fact that you connected the “wrong” cable. Obviously, this new technology
is very desirable and is making its way to more and more Cisco devices all the time.