Nortel business policy switch 2000, Руководство пользователя

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354 Chapter 6 Troubleshooting
208700-C
Normal power-up sequence
In a normal power-up sequence, the LEDs appear as follows:
1
After power is applied to the switch, the Pwr (Power) LED turns on within 5
seconds.
2
The switch initiates a self-test, during which the port LEDs display various
patterns to indicate the progress of the self-test.
3
Upon successful completion of the self-test (within 10 seconds after power is
applied), the Status LED turns on.
4
The remaining port LEDs indicate their operational status, as described in
Table 62 .
Port connection problems
You can usually trace port connection problems to either a poor cable connection
or an improper connection of the port cables at either end of the link. To remedy
these types of problems, make sure that the cable connections are secure and that
the cables connect to the correct ports at both ends of the link.
Port connection problems are also traceable to the autonegotiation mode or the
port interface.
Avvertenza: Per evitare lesioni fisiche dovute a scariche pericolose di
corrente, non rimuovere mai il coperchio superiore del dispositivo. I
componenti interni non possono essere manipolati dall’utente.