Environment check of LAN fault

1. Power Connection Check

Check that all devices on the network (such as hub, switch, etc.) are connected and working properly.

2. Network connectivity Check

Whether the cable connection line sequence matches the requirements of the network connection.

Network connectivity is normal, to see if the cable is damaged and excessive distortion.

Whether the network cable length is too long.

Cable connector, that is, whether the crystal head is intact, oxidation.

Nic interface is intact, reseat the network cable, check the network cable and network card connection is loose.

Check to see if there is a terminator as required by the cable and whether the Terminator is normal.

3. Network equipment appearance and perimeter check

After the power is started, the NIC led is bright and so on.

Hub and other equipment, cable interface, in connection with the terminal or server, if the configuration is normal, LED will be lit. If the LEDs are not lit, the device is faulty.

The network card part is normal, the gold finger on the network card has no oxidation.

Whether there is any interference around devices such as network adapters or switches.

4. Mainframe appearance check

Check the chassis for any foreign matter causing a short circuit.

If there is too much dust in the chassis, dust should be cleaned up.

The motherboard and the NIC on the components have no deformation, discoloration of the phenomenon.

After the addition of electricity, attention to components, components and other equipment whether there is odor, temperature anomalies and so on.