Cabletron Systems 3H08-04, 3H02-04 manual Chapter Connecting to the Network, POWER-UP LED Sequence

CHAPTER 2

CONNECTING TO THE NETWORK

This chapter provides reference material and instructions that network administrators can use to configure the Fast Ethernet Switch Modules.

For instructions on adding a switch module to the ATX, see Chapter 5, Adding/Swapping Modules.

2.1 POWER-UP LED SEQUENCE

Watch the LED sequence during power-up. It takes about 1 minute for the ATX to complete the power-up diagnostics. The ATX begins system diagnostics on the PPE (topmost module) and then individually on each installed module, starting at the top and working down to the bottom.

Using both processors, the specific power-up tests run on the switch module are:

•ROM checksum test

•Instruction memory test

•Memory map tests

•Interrupt tests

•Fast Ethernet data loopback tests

The power-up LED sequence for the Fast Ethernet module is as follows:

1.All LEDs flash.

2.The PWR LED remains on, and the TX LEDs flash.

3.On each switch module, the following occurs:

a.The PROC LED comes on for 5 seconds, blinks, then remains lit.

b.The RX and TX LEDs flash momentarily.

FE Switch Module User Guide Page 2-1