
Troubleshooting
Loading Failure Processing:
After loading fails, the system will keep running in the original version. At this time, users should refer to the following
steps to re-check:
1. if physical port connections are good first. If some ports are not connected, then re-connect them
to ensure that physical connections are correct, and begin re-loading.
2. If physical connections are correct, then check the loading process information displayed on the
super terminal to verify if there are input errors. If there are input errors, correct them and re-load.
For example, when using TFTP protocol, we enter incorrect IP addresses of the Server and Switch,
name of loading software, do not specify the correct working path of the correct TFTP server, and so
on.
3. if physical connections are good, and there are no input errors in the loading process but the
loading fails finally, please contact agents for help.
User Password Lost:
If the system password is lost or forgotten, the following method can be used to reset the password:
1. Enter uBoot operation mode; see Chapter 5 for how to enter;
2. Input boot_flash_nopass command to start the system in uBoot mode;
Note: After using the boot_flash_nopass command, the system will clear up the startup-config files;
before starting this operation, the startup-config files will be stored in flash:/startup-config.conf.old
file.
Power System Troubleshooting:
The switch can judge if its power system is faulty according to the PWR indicator on the front panel:
when the power system works normally, the PWR indicator shall always keep lighting; when the
PWR indicator is off, please check if:
1. The power line of the switch is connected correctly.
2. The EPS of the switch matches the power required by the switch.
Configuration System Troubleshooting:
After the switch is powered on, if the system is normal, the startup information will be displayed on
the configuration terminal; If no display information on the configuration terminal appears, maybe
the configuration system is faulty, please check if:
1. The power is normal.
2. The cable of the configuration port (Console) is properly connected.
If no problems have been found after the above checks, it is possible that the configuration cable is
faulty or the parameter setting of the terminal (such as a super terminal) is incorrect, please check
accordingly.