Specifications

ExtremeWare XOS 11.0 Concepts Guide 321
B Troubleshooting
This appendix describes some troubleshooting tips on the following topics:
• LEDs on page 321
• Using the Command Line Interface on page 322
• Debug Mode on page 327
• TOP Command on page 327
• System Health Check on page 328
• System Odometer on page 329
• Temperature Operating Range on page 329
• Running MSM Diagnostics from the Bootloader on page 329
If you encounter problems when using the switch, this appendix may be helpful. If you have a problem
not listed here or in the release notes, contact your local technical support representative.
LEDs
Power LED does not light:
Check that the power cable is firmly connected to the device and to the supply outlet.
On powering-up, the MGMT LED lights yellow:
The device has failed its Power On Self Test (POST) and you should contact your supplier for advice.
A link is connected, but the Status LED does not light:
Check that:
• All connections are secure.
• Cables are free from damage.
• The devices at both ends of the link are powered-up.
• Both ends of the Gigabit link are set to the same autonegotiation state.
The Gigabit link must be enabled or disabled on both sides. If the two sides are different, typically
the side with autonegotiation disabled will have the link LED lit, and the side with autonegotiation