Cabletron Systems 3F00-01 User Manual

Contents

Cabletron Systems 3F00-01 User Manual Manual pdf 23 page image

Chapter 2: Connecting to the NetworkFDDI Dual-Attached Intelligent Module User’s Guide Page 2-72.2.2 3F55-01 LED SequenceFigure 2-6 shows the positions of the LEDs on the 3F55-01 front panel.Figure 2-6 3F55-01 LEDsThe LED power-up sequence for the 3F55-01 is as follows:1. All LEDs light briefly and turn off, except for the PWR LED, whichremains on.2. The PROC LED lights while power-up diagnostics are being run onthe 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 initializesand remains on.6. The RING A and RING B RX, TX, THRU, and WRAP LEDs remainoff until the module is connected to the network.Note: RING A refers to the primary FDDI ring, and RING B to thesecondary FDDI ring. These LEDs do NOT correspond to FDDI MIC Aand FDDI MIC B.OFFLINE PWRRING ARING BTHRUWRAPRX PROCFDDI MIC A FDDI MIC BOPTICAL BYPASS3F55-01SINGLE-MODE SINGLE-MODE TXSN