Bay Networks BayStack 303 User Manual page 44

Using the BayStack 303 and 304 Ethernet Switches
The indicator for the built-in 100BASE-TX port is located on the LED panel on
the right of the front panel. The indicator for the MDA port is located on the
MDA. When the half- and full-duplex indicator is lit, the port is operating in
full-duplex mode (meaning the port is operating at either 20 Mb/s or 200 Mb/s,
depending on the connecting device). When the indicator is not lit, the port is
operating in half-duplex mode, which is 10 Mb/s or 100 Mb/s.
Note: The 100BASE-FX MDA port operates in 100 Mb/s (half-duplex mode)
or 200 Mb/s (full-duplex mode) only.
Autonegotiation
The fixed 10/100 Mb/s port and the optional 10/100BASE-TX MDA port support
the IEEE 802.3u autonegotiation standard. When autonegotiation is enabled on
the switch and the port is connected to a device that also supports the standard, the
two devices negotiate the best speed and duplex mode of operation. All the
high-speed ports on the BayStack 303 and 304 switches support full-duplex. For
more information on autonegotiation, see "Autonegotiation" on
2-10
page 4-2.
893-01010-A