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6
SWITCH MONITORING AND
MAINTENANCE
Monitoring the Switch Although the Switch 8800 Family has undergone a comprehensive and strict
factory test before delivery, there might be some fault occurring due to improper
installation. This chapter describes how to troubleshoot the Switch 8800 Family.
Troubleshooting Console
Terminal
If the system is normal after the Switch is powered on, the booting information
will be displayed on the Console terminal. If the configuration system has failed,
the Console terminal may give illegible output or nothing at all.
1 The terminal gives no displays after the Switch is powered on.
In this case, you should check if:
■ The power system is working normally.
■ The fabric is working normally.
■ The Console cable has been connected to the Console port on the fabric.
If no problem has been found in the above checking, the symptom is very likely
caused by the errors listed below.
■ The Console cable is not connected to the right serial port, that is, the port in
use is not the one configured on the terminal.
■ There are Console terminal parameter errors. (According to the parameter
setting requirements, you should set the baud rate to 9600, data bits to 8,
parity to None, stop bits to 1, flow control to None, and select VT100 as
terminal emulation.)
■ The Console cable is not in good condition.
2 The terminal gives illegible characters.
This symptom is very likely caused by a Console terminal setting error. In this case,
check that you have set the baud rate to 9600, data bits to 8, parity to None, stop
bits to 1, flow control to None, and select VT100 as terminal emulation.
Troubleshooting PSU
Following are the PSU faults that likely appear and the methods used for problem
isolation.
Table 73 Description of the LEDs on PSU
LED Description
INPUT It keeps ON if the power input is normal and the PSU switch is at ON position. It
keeps OFF if the power input has failed or if there is no power input at all.
OUTPUT It keeps ON if the power output is normal and OFF in any other cases.
FAIL It keeps ON if the PSU has failed and OFF in any other cases.