3Com NETBuilder II DPE 80, Manual, Page: 16 / 32

2-2 C
HAPTER
2: T
ROUBLESHOOTING AND
R
EPLACING THE
DPE M
ODULE
LED Patterns
The nine LEDs display the diagnostic and operational activity of the NETBuilder II
bridge/router. Table 2-2 describes the LEDs during normal operation. Table 2-3
describes the LEDs during an error condition.
Table 2-2 Normal Operation of LEDs
RUN LOAD TEST
G = green
Y = yellow
x = any value
- = off
F = flashing
PACKET FORWARD POWER/FAULT
STATUS Meaning
G G Y G G G G G Y Initial power-on or reset value
- - Y - - - G - G Performing DRAM test
- - Y - - G - - G Loading firmware
- - Y - G - x - G Firmware initialization
- - Y G - - x - G Performing non-essential, board-level, power-on self-tests
- - Y G - G x - G Performing corebus loopback test
- - Y G G - x - G Performing UART and shared memory test
- - Y G G G x - G Validating firmware parameters
- - Y - G G x - G Updating firmware
- G - - - - x - Y Waiting for boot monitor command
- G - - G - x - Y Performing TFTP get of bridge/router image
- G - - - G x - G Awaiting response to “enter boot monitor?”
- G - - G - x - G Reading bridge/router image composite file into shared
memory
- G - - G G x - G Validating composite file
- G - G - - x - G Auto-updating from composite file
- G - G - G x - G Decompressing bridge/router software
- G - G G - x - G Loading bridge/router software
- G G G G x - G Bridge/router software initializing
G - - x x x x x G Bridge/router software running