Cabletron Systems 3F00-01, Руководство пользователя

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Chapter 2: Connecting to the Network
FDDI Dual-Attached Intelligent Module User’s Guide Page 2-7
2.2.2 3F55-01 LED Sequence
Figure 2-6 shows the positions of the LEDs on the 3F55-01 front panel.
Figure 2-6 3F55-01 LEDs
The LED power-up sequence for the 3F55-01 is as follows:
1. All LEDs light briefly and turn off, except for the PWR LED, which
remains on.
2. The PROC LED lights while power-up diagnostics are being run on
the 3F55-01.
3. The WRAP LED for Ring A lights briefly.
4. The TX and RX LEDs flash.
5. The PROC LED lights again when the 3F55-01 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.
OFFLINE
PWR
RING A
RING B
THRU
WRAP
RX PROC
FDDI MIC A FDDI MIC B
OPTICAL BYPASS
3F55-01
SINGLE-MODE SINGLE-MODE
TX
SN