Precautions for basic device debugging

1. When backing up the switch configuration file or flash, you should note that only the control line is useless. You need to use a direct connection to connect to the host, in addition, you must configure an IP address with a network segment of the host for vlan1.

2. If the switch suddenly loses power when updating the Flash file, the switch will lose the system. Deleting flash will make the switch unable to start. If the switch does not have a system, you need to install the system, when installing the system, you can use the reverse line, but the speed will be very slow. It takes more than 40 minutes to use the XMODEM provided by the Super Terminal instead of the TFTP service.

3. The vro also needs to use twisted pair wires when backing up files, and the interface must be a network segment with the host.

4. When the vro restores the password, the deposit value must be 0x2142. If it is changed to another value, the vro may not start.

5. If there are two ethernet ports when installing the system, the first Ethernet port must be used.

6. If garbled characters occur during control of the vro, or the system cannot be accessed, the storage value may be modified. At this time, you should change the bit rate and try it one by one, it is not feasible to directly change the storage value under the global conditions. You need to change the speed to 9600 in the control interface mode and then directly restore it to the default value.

Precautions for basic device debugging