6TROUBLESHOOTING
This chapter covers the following topics:
■Troubleshooting the Configuration
■Troubleshooting Power
■Troubleshooting the Fans
■Troubleshooting I/O Modules
The simplest way to diagnose a fault is to check the system status LEDs on the
Fabric modules. In addition, with the DeviceMgr network management system,
you can also locate the fault through management software.
Troubleshooting the
Configuration
After the switch is powered on, booting information is displayed on the
configuration terminal. If the configuration system has failed, there is no screen
display at the configuration terminal or the displayed characters are illegible.
No information is
displayed on the
terminal
If there is no information displayed on the terminal after the Switch 8800 is
powered on, check that:
■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 this procedure does not reveal the problem, verify the following:
■The console cable is connected to the serial port that is configured on the
terminal.
■Console terminal parameters are set properly. See “Setting Terminal
Parameters” on page 29.
■The console cable is not damaged.
The displayed characters
are illegible
If the displayed characters are illegible, the console terminal parameters may not
have been set correctly. See “Setting Terminal Parameters” on page 29.
Troubleshooting
Power
Tab le 32 describes power LEDs on the power supply.
Tabl e 32 Power LEDs on the Power Supply
LED Status Description
INPUT On — The power input is normal and the power supply switch is in
the ON position.
Off — The power input has failed or has not been turned on.