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Cisco Wide Area Virtualization Engine 7541, 7571, and 8541 Hardware Installation Guide
Chapter 6 Troubleshooting the System Hardware
Error Symptoms
Table 6-4 Intermittent Problems
Symptom Cause and Action
A problem occurs only
occasionally and is difficult to
detect.
1. Verify the following items:
a. All cables and cords are connected securely to the rear of the
appliance and attached hardware options.
b. When the appliance is powered on, air is flowing from the
rear of the appliance at the fan grille. If there is no airflow, the
fans are not working. This causes the appliance to overheat
and shut down.
2. Check the system error log.
3. See Undetermined Problems.
Table 6-5 Memory Problems
Symptom Cause and Action
The amount of system
memory displayed is less than
the amount of physical
memory installed.
1. Verify the system fault LED is not lit on the front panel.
2. Verify the correct number of DIMMS are present (including serial
numbers) using the show hardware command.
3. Check for memory alarms using the show alarms command.
Table 6-6 Hardware Option Problems
Symptom Cause and Action
A hardware option that was
just installed does not work.
1. Verify the following items:
a. The hardware option is designed for the appliance.
b. You followed the installation instructions that came with the
hardware option.
c. The hardware option is installed correctly.
d. You have not loosened any other installed hardware options
or cables.
2. Check the hardware option that you just installed.
A hardware option that used to
work does not work now.
1. Verify that all of the hardware options and cable connections are
secure.
2. Check for a failing hardware option and replace it if necessary.
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