Chapter 5 Troubleshooting the System Hardware
Symptoms and Solutions
5-10
Cisco Wide Area Virtualization Engine 274 and 474 Hardware Installation Guide
OL-17739-01
Tab l e 5-5 Intermittent Problems
Symptom Cause and Action
A problem occurs only
occasionally and is difficult to
detect.
1. Verify the following items:
a. All cables are connected securely to the rear of the device.
b. When the device is powered on, air is flowing from the rear
of the device at the fan grille. If there is no airflow, the fans
are not working. This problem causes the device to overheat
and shut down.
2. Check the system error log.
3. See the “Undetermined Problems” section on page 5-6.
Tab l e 5-6 Memory Problems
Symptom Cause and Action
The amount of system
memory displayed is less than
the amount of physical
memory installed.
1. Verify the following items:
a. No error LEDs are lit on the front panel.
b. The memory modules are seated properly.
c. All banks of memory on the DIMMs are enabled. The device
might have automatically disabled a DIMM bank when it
detected a problem.
2. Check the POST error log:
a. If a DIMM was disabled by a system management interrupt
(SMI), the DIMM must be replaced.
b. If the DIMM was disabled by the user or by POST, follow
these steps:
–
Start the configuration/setup utility program.
–
Enable the DIMM.
–
Save the configuration and restart the device.
3. Check the DIMM.
4. Check the system board.