Search for LAN fault Techniques

Network failures often occur, just as people often get sick. After a network problem occurs, Do not worry and stay awake. Find out where the problem is, generally in the following situations:

1. When the entire network is disconnected, it may be a problem with the switch or hub. It depends on whether the switch or hub is working properly.
2. Only one computer cannot access the network, that is, when the computer's "Network Neighbor" is turned on, it can only see the local computer, but not other computers. It may be due to a problem with the connection between the network card and the switch, so we should first look at the RJ-45 crystal head is not bad contact. Then, use the wire measuring instrument to test whether the line is broken. Finally, check whether the port on the vswitch works properly.

3. You cannot see the Local Computer in "Network Neighbor", or use the "PING" command to start "Start/run". When the IP address of the local computer cannot be pinged, this indicates that there is a problem with your network settings. The first thing we think of is the network card. We can open the "control panel/system/device management/network adapter" setting window, in this window, check whether there are any interruptions and I/O address conflicts. Generally, the NE2000 series Nic is IRQ3 AND THE 8029 chip Nic is IRQ10. If no Nic conflict exists, check whether the driver is in good condition and reinstall the NIC Driver.

4. other computers in the network can be seen in "Network neighbors", but you cannot access them. This may be caused by a problem in your network protocol settings. Delete your previous network protocols, reinstall them, and reset them.

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