3Com SuperStackII Switch 3900, Быстрое руководство по установке

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Quick Installation Guide 5
LEDs and Power-up Diagnostics
Your system runs diagnostic software at power up. This software verifies
that every component in the system is operating correctly. If any
component fails during power-up diagnostics, the system either fails to
power up or, for the Switch 3900, it prevents faulty modules from coming
online.
For diagnostic messages, view the system display in the Administration
Console (if you have connected the system to a workstation).
For the Switch 3900, when the system comes up, verify which modules, if
any, have failed diagnostics by checking the module LEDs.
The system and port LEDs are described in Table 3.
Table 3 System and Port LEDs
LED Name Type
Color
Indications
Description
Power — System
power Green The system is powered up.
No light The system is powered down.
Fault — System
fault Yellow The system has failed diagnostics or
some other operational error has
occurred.
Blinking
yellow Diagnostic software is not running.
No light The system is operational.
Pckt Packet Port
activity Yellow Data is passing through the port.
Blinking
yellow Data is passing through the port.
No light Data is not passing through the port.
Stat Status Port
link Green The port is online.
Blinking
green The port is online but disabled.
No light The port is off-line.