Auto Mdi/Mdi-X Connection - Moxa Technologies EtherDevice Hardware Installation Manual

100/LNK/ACT GREEN
LNK/ACT

Auto MDI/MDI-X Connection

The Auto MDI/MDI-X function allows users to connect Moxa
EtherDevice Server's 10/100BaseTX ports to any kind of Ethernet
device, without paying attention to the type of Ethernet cable being
used for the connection. To understand the meaning of this
statement, you simply need to remember that there are two types
of Ethernet ports, and two types of Ethernet cables. See the
10/100BaseTX Ethernet Port Connection section from Chapter 3
for detailed Pinout and Cable Wiring diagrams. In this section, we
give a short primer of the terminology, and indicate which cable
should be used to connect which types of ports.
There are two types of Ethernet port in use. The first type is called
an MDI (Medium Dependant Interface) port, and is what you find
on your PC's NIC (Network Interface Card). The second type is
called an MDI-X (Medium Dependant Interface, Crossover) port,
and is the type of port found in a standard HUB or switch. For this
reason, we often refer to an MDI port as being NIC-type, and an
MDI-X port as being HUB/Switch-type.
4-4
MOXA EtherDevice Server Hardware Installation Guide
On
Blinking
Off
On
AMBER
Blinking
Off
100 Mbps link has been
established
Data is being transmitted
at 100 Mbps
Port's 100 Mbps link is
inactive
100BaseFX port is active
Data is being transmitted
at 100 Mbps
100BaseFX port is inactive