In the main interface of the switch, you can view the machine name of the corresponding interface, or you can view the IP addresses of the corresponding line machines in the network management, and then view the IP addresses of the corresponding machines one by one. Or, pull it out and see which machine is disconnected.

The second way:

Connect one end of the network cable to the computer network card, and the other end to the LAN port of the router of insert link Power Supply. Observe the status of the corresponding Ethernet port indicator. If it is on, it means that there is a signal on the network cable. An ohmmeter can be used to test the resistance capacity of the internal network cable crystal head corresponding to the chromatogram. If there is resistance, the wires are connected together until all eight wires pass through.

Extended data

Switches can plug in interfaces regardless of input and output lines. Each port of the switch can be regarded as an independent physical network segment (note: non-IP network segment). Network devices connected to it can enjoy all the bandwidth independently without competing with other devices.

When node A sends data to node D, node B can send data to node C at the same time. Both transmission modes enjoy the full bandwidth of the network and have their own virtual connections. The switch based on MAC address identification can complete the data frame forwarding function of network equipment.