Alteon Web Switch Hardware Installation Guide
Troubleshooting
This section contains information about possible problems that may occur or error messages that might display if the switch is not properly installed or configured.
Link LED Does Not Light
Symptom
The green Link LED does not light. When you check the Link state using the console terminal (see the Web OS switch software manuals), the status is reported as down.
Cause
νPort configuration mismatch. If the switch port is configured with a specific speed or duplex mode (for example, 100 Mbps, full duplex) check to see that the other device is set to the same configuration. If the switch port is configured to
νCable problem. Make sure you are using the correct type of cable to connect the switch to other devices. Refer to Figure 10 on page 21 for information about crossover cables for connecting switches, hubs, or routers to Alteon Web switches.
Temperature Sensor Error Message
The following message is displayed on the console if the temperature of an Alteon Web switch exceeds the threshold. Immediate attention is required.
Temperature at sensor xxx exceeds threshold
Current temperature is xx oC | Threshold is xxoC |
Actions
νMake sure that the air circulation vents on the front, back, and sides of the switch are free from obstruction by cables, panels, rack frames, or other materials.
νMake sure that all four cooling fans inside the switch are running. The fans are located behind the ventilation grill at the rear of the switch. The exhaust from all four fans should be blowing outward with roughly equal air pressure (it is normal for the exhausts to have different temperatures). You can also use a flashlight to check whether the fan blades are moving. If any fan stops during switch operation, contact Customer Support.