3F00-01 Led Sequence - Cabletron Systems 3F00-01 User Manual

Chapter 2: Connecting to the Network

2.2.1 3F00-01 LED Sequence

Figure 2-5 shows the positions of the LEDs on the 3F00-01 front panel.
3F00-01
OFFLINE
The LED power-up sequence for the 3F00-01 is as follows:
1. All LEDs light briefly and turn off, except for the PWR LED, which
remains on.
2. The STATUS LED lights while power-up diagnostics are being run on
the 3F00-01.
3. The TX and RX LEDs flash.
4. The STATUS LED goes off while diagnostics are running on the other
modules in the ATX.
5. The STATUS LED lights again when the 3F00-01 software initializes
and remains on.
6. The RING A and RING B RX, TX, THRU, and WRAP LEDs remain
off until the module is connected to the network.
Note: 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.
Page 2-6
OPTICAL BYPASS
FDDI MIC A
MULTI-MODE
Figure 2-5 3F00-01 LEDs
FDDI Dual-Attached Intelligent Module User's Guide
FDDI MIC B
MULTI-MODE
SN
THRU
RX PROC
RING A
RING B
TX PWR
WRAP