Cabletron Systems 3H08-04 User Manual

Page of 42
 
FE Switch Module User Guide
Page 2-1
 
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
 
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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.