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Hardware Installation Guide for Cisco Media Experience Engine 3000
OL-17000-01
Chapter 5 Troubleshooting the Cisco MXE 3000
NMI Functionality
NMI Functionality
An NMI crash dump enables administrators to create crash dump files when a system is hung and not
responding to traditional debug mechanisms.
Crash dump log analysis is an essential part of diagnosing reliability problems, such as hangs in
operating systems, device drivers, and applications. Many crashes freeze a system, and the only available
action for administrators is to cycle the system power. Resetting the system erases any information that
could support problem analysis, but the NMI feature preserves that information by performing a memory
dump before a hard reset.
To force the OS to invoke the NMI handler and generate a crash dump log, the administrator can do any
of the following:
• Short the NMI jumper pins (See the “System Board Components” section on page 1-7.)
• Press the NMI switch
• Use the iLO Virtual NMI feature
Trouble Indicators and Status LEDs
If the system error LED on the front of the device is on, one or more LEDs inside the device or on the
power supply will be on. Your device has LEDs to help you identify problems with some device
components. See
“System Board LEDs” section on page 1-8 for the location and description of these
indicators.
System LEDs and Internal Health LED Combinations
When the internal health LED on the front panel illuminates either amber or red, the appliance is
experiencing a health event. Combinations of illuminated system LEDs and the internal health LED
indicate system status.
The front panel health LEDs indicate only the current hardware status. In some situations, SIM may
report server status differently than the health LEDs because the software tracks more system attributes.
For the location of server LEDs, see the
“System Board Components and LEDs” section on page 1-6.
Table 5-1 describes the system LEDs and internal health LED combinations.
Ta b l e 5-1 System LED and Internal LED Color Combinations and Statuses
System LED and Color
Internal Health
LED Color
Status
Processor failure (amber) Red One or more of the following conditions may exist:
• Processor has failed.
• Processor is not installed in the socket.
• Processor is unsupported.
• ROM detects a failed processor during POST.
— Amber Processor is in a pre-failure condition.
PPM failure (amber) Red PPM has failed.