H3c-technologies H3C MSR 800 User Manual download pdf (Page 32)

No response from the serial port

If the serial port does not respond, 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 from 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 the configuration, delete the configuration file at the CLI, and press the Reset button

to restore the factory settings.

Scenario 3

Symptom

The router crashes.

Solution

Press the Reset button for a short time to reboot the router.

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H3c-technologies H3C MSR 800 User Manual Page 32