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| Title | Size | Download |
|---|---|---|
| 04-Troubleshooting | 58.85 KB |
Troubleshooting
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IMPORTANT: · The barcode on the router chassis contains product information that must be provided to local sales agent when you return a faulty router for service. · Keep the tamper-proof seal on a mounting screw on the chassis cover intact, and if you want to open the chassis, contact H3C for permission. Otherwise, H3C shall not be liable for any consequence. |
Power supply system failure
Symptom
The router cannot be powered on. The system LED is off.
Solution
To resolve the issue:
1. Verify that the power cord of the router is correctly connected to the router and the power source.
2. Verify that the power source is operating correctly.
3. Verify that the power cord is in good condition.
4. If the issue persists, contact H3C Support.
Configuration terminal issues
If the configuration environment setup is correct, the configuration terminal displays boot information when the router is powered on. If the setup is incorrect, the configuration terminal displays nothing or garbled text.
No terminal display
Symptom
The configuration terminal displays nothing when the router is powered on.
Solution
To resolve the issue:
1. Verify that the power supply system is operating correctly.
2. Verify that the console cable is correctly connected.
3. Verify that the console cable is connected to the serial port that is configured for the configuration terminal.
4. Verify that the configuration terminal parameters are configured as follows:
¡ Baud rate—9600
¡ Data bits—8
¡ Parity—none
¡ Stop bits—1
¡ Flow control—none
¡ Terminal emulation—VT100
5. Verify that the console cable is in good condition.
6. If the issue persists, contact H3C Support.
Garbled terminal display
Symptom
The configuration terminal displays garbled characters when the router is powered on.
Solution
Verify that the Data bits field is set to 8 for the configuration terminal. If the Data bits field is set to 5 or 6, the configuration terminal displays garbled characters.
No response from the serial port
Symptom
No boot information is displayed on the configuration terminal when the router starts up or restarts up.
Solution
Verify that the serial cable is in good condition and the serial port settings are correct.
Restoring the factory settings
Scenario 1
Symptom
When you replace the router, the router password is lost. As a result, you cannot log in to the router and do not know the router configuration.
Solution
Because the router is replaced, you do not need to save the configuration of the router. In this case, you can press the RESET button for more than 4 seconds to reboot the router and restore the factory settings. Then, you can use the username and password shipped with the router to log in to the router.
When the router configuration must be saved and you have a console cable, you can log in to the router through the BootWare menu.
Scenario 2
Symptom
After the configuration is modified, the network connectivity is lost. When you check the configuration, the configuration is very complicated and it is hard to locate the errors. In this case, you must configure the router again.
Solution
If you have not saved any configuration, you can reboot the router by pressing the RESET button for a short time or power off the router.
If you have saved some configurations, you can use the CLI to delete the configuration file or press the RESET button for more than 4 seconds to restore the factory settings.
Scenario 3
Symptom
The router crashes.
Solution
Press the RESET button for a short time to reboot the router.
Reset button usage guidelines
You can use the button to reboot the system or restore the factory settings.
· Press the RESET button for a short time to reboot the router.
· Press the RESET button for more than 4 seconds to reboot the router and restore the factory settings.
