Cisco Systems 274 Manuale Utente
Chapter 5 Troubleshooting the System Hardware
Undetermined Problems
5-6
Cisco Wide Area Virtualization Engine 274 and 474 Hardware Installation Guide
OL-17739-01
Undetermined Problems
Use the information in this section if the diagnostic tests did not identify the
failure, the devices list is incorrect, or the system is inoperative.
failure, the devices list is incorrect, or the system is inoperative.
Note
Damaged data in CMOS can cause undetermined problems.
Note
Damaged data in the BIOS code can cause undetermined problems.
Check the front panel Power LED. If the LED indicates the power supply is
working correctly, follow these steps:
working correctly, follow these steps:
Step 1
Power down the device.
Step 2
Make sure that the device is cabled correctly.
Step 3
Remove or disconnect the following devices (one at a time) until you find the
failure (power up the device and reconfigure it each time):
failure (power up the device and reconfigure it each time):
•
Any non-Cisco devices
•
Surge suppressor device (on the device)
Data is incorrect or
sporadic.
sporadic.
Check the following:
•
Make sure that you are using Category 5 or higher cabling when operating
the device at 100 Mbps or 1000 Mbps.
the device at 100 Mbps or 1000 Mbps.
•
Make sure that the cables do not run close to noise-inducing sources such
as fluorescent lights.
as fluorescent lights.
The Ethernet
controller stopped
working without
apparent cause.
controller stopped
working without
apparent cause.
Check the following:
•
Try a different connector on the switch.
•
Reseat or replace the adapter.
Table 5-1
Ethernet Troubleshooting Chart (continued)
Ethernet Controller
Problem
Problem
Actions