The 1. switch needs to start Telnet remote login mode. Telnet remote login is allowed in the system setting interface, the password of the remote login account is configured, and then Telnet logs in to the remote ip of the switch in cmd mode. 2. To switch login permissions by using su command, you need to switch to management mode and enter the account and password of the administrator.

3. Enter the system mode, enter the command shown below and type the ip address you need to find directly behind Enter, so that it will show which vlan this ip is in, and then right-click to select the mac address you copied and saw.

4. Open a browser to enter the switch web page management interface, and select port management and MAC address management in the upper left corner.

5. Under the mac address management, search and enter the MAC address of the ip found under the cmd command, and click Search to find which machine is at which switch port.