User`s guide

Chapter 5: Diagnostics and Troubleshooting
Page 5-2 FDDI Dual-Attached Intelligent Module User’s Guide
Note: In Table 5-1 and Table 5-2, Ring A refers to the primary FDDI
ring, and Ring B to the secondary FDDI ring. These LEDs do NOT
correspond to FDDI MIC A and FDDI MIC B.
Table 5-1 Meaning of 3F00-01 LEDs
LED Meaning
THRU On - Ring A or B (as indicated by LED label) is in through mode
Flashing - Ring is twisted
WRAP On - Ring A or B (as indicated by LED label) is in wrap mode
Flashing - Ring is twisted
STATUS On - 3F00-01 hardware is ready for operation (port may or may not be
enabled – controlled by software)
POWER On - 3F00-01 hardware is receiving power
RX Flashing - Port is receiving data
TX Flashing - Port is transmitting data
Table 5-2 Meaning of 3F55-01 LEDs
LED Meaning
THRU On - Ring A or B (as indicated by LED label) is in through mode
Flashing - Ring is twisted
WRAP On - Ring A or B (as indicated by LED label) is in wrap mode
Flashing - Ring is twisted
PROC On - 3F55-01 hardware is ready for operation (port may or may not be
enabled – controlled by software)
POWER On - 3F55-01 hardware is receiving power
RX Flashing - Port is receiving data
TX Flashing - Port is transmitting data