Troubleshooting - HP FlexFabric 12900E series Installation Manual

Troubleshooting

This chapter describes how to troubleshoot your switch.
TIP:
• Noncompliant operating environment might cause switch failure. You need to clean your switch
periodically and make sure the installation environment meets the requirements. For more
information, see
• Periodically perform power-on test on spare switches.
Troubleshooting methods
When your switch fails, you can use the following methods to troubleshoot the switch:
•
At the CLI, you can use related commands to display hardware information, and locate
hardware failures.
•
Every MPU provides LEDs for the fans, power supplies, and cards. You can locate the failures
according to the LED status on the MPU. For more information about the LED status on the
MPU, see
•
The MPUs and LPUs provide port status LEDs, with which you can detect port failures. For
more information about port status LEDs, see
If you cannot locate failures by following the guidelines in this chapter, contact the local agents or
technical support engineers. For more information, see
System failures at startup
No display on the configuration terminal
Symptom
The configuration terminal does not have display when the switch is powered on.
Solution
To resolve the problem:
Verify that the power system is operating correctly.
1.
Verify that the MPU is operating correctly.
2.
Verify that the console cable connects the console port on the MPU and the serial port on the
3.
terminal correctly.
Verify that the console cable is in good quality and is operating correctly.
4.
Verify that the following settings are configured for the terminal:
5.
Baud rate—9600.
Data bits—8.
Parity—None.
Stop bits—1.
Flow control—None.
Emulation—VT100.
If the problem persists, contract Hewlett Packard Enterprise support.
6.
"Preparing for installation."
"Appendix C LEDs."
"Appendix C LEDs."
"Technical
63
support."