Enterasys fn100 Betriebsanweisung

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Fast Network 100 User Guide
Page 5-1
CHAPTER 5
FN100 DIAGNOSTICS AND TROUBLESHOOTING
The FN100 incorporates several built-in diagnostic and testing 
capabilities which are convenient to use and cause minimal or no 
disruption to the operational network. These capabilities are effective for 
isolating problems within the FN100 unit. Built-in diagnostic capabilities 
include system-wide power-up diagnostics, which are run every time the 
system is powered up or reset.
All tests can be performed locally or remotely using an in-band or 
out-of-band Network Management System (NMS).
5.1 POWER-UP DIAGNOSTICS
The FN100 performs an extensive set of diagnostic self-tests whenever 
any of the following events occur:
Power-up
Reset using the front panel Reset button
Reset via the NMS (a soft reset)
Automatic reset in response to a non-recoverable failure
The power-up diagnostics tests processors, memory, and other critical 
hardware components of the FN100. All diagnostic software is stored in 
non-volatile memory (EPROM and FLASH).
5.1.1 Power-Up LED Sequence
When you power-up the FN100, the following occurs:
1. All LEDs, except for the Port Link LEDs, turn on for one second.
2. The Power (Pwr) LED remains on.
3. The Ready LED starts flashing.
4. After several seconds, the Port Link and ACT LEDs flashed briefly.