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Using the BayStack 303 and 304 Ethernet Switches
B-2
893-01010-A
1 = Status indicators 
Link–valid communication link established 
F Dx–port operating in full-duplex mode (LED lit) or half-duplex mode (LED off)
2 = 100BASE-FX SC port connector
Figure B-1.
100BASE-FX MDA 
The 100BASE-FX MDA has its own LED indicators, described in 
.
The fiber optic connector is an important element of the fiber cable installation; it 
directly influences cable performance. Because of termination costs, fiber optics 
are often limited to use as a network backbone. But there is no other network 
transport medium that can match the bandwidth, scalability, or physical 
transmission capabilities of fiber optics. 
Table B-1.
100BASE-FX MDA LEDs 
Label
Color
State
Meaning
Link
Green
On
Off
Link is active and connected correctly.
Link is inoperative or improperly connected.
F Dx
Green
On
Off
Port is operating in full-duplex mode (200 Mb/s).
Port is operating in half-duplex mode (100 Mb/s).
MFX-1
100BASE-FX
TX
RX
Link
F Dx
898EA
1
2
89301010.BK  Page 2  Tuesday, June 10, 1997  8:00 PM