When forming a local area network, according to the general specifications of comprehensive wiring, network cables with "miao marks" or special "special-type number tubes" should be used during construction, and computer identification records corresponding to "miao marks" or "number tubes" should be made at the cabinet. Many units used to have very few computers, and later some computers were gradually added to form a local area network of a certain scale. However, when the network was formed, the network cables connected to the computer were not marked, or paper labels such as 1234 and ABCD were added, which was prone to similarity. Over time, some of the logos would be blurred, which brought inconvenience to future network maintenance work. In the process of standardizing the local area network, pairing the network cables connected to the switch and the computer is a tedious task. The following are four common pairing methods:
1. Use network cable wire tester: This is also a common method for people to unplug all network cables from the switch (or Hub), connect the transmitting end of the line tester to the network cable at one end of the computer, and then use the receiving end to test the network cable at the switch one by one, find the end with a signal connection indication, put a number tube on, insert it into the corresponding position of the switch, and make records, complete the pairing of one set of network cables, and then perform the pairing of the next set of network cables. This method is suitable for local area networks with a small number of computers.
2. Turn on the computer one by one: When the network connection is normal, the power indicator light, data indicator light of the computer network card and the power indicator light and data light at the corresponding port position of the switch will light up. According to this feature, we can turn on the computer one by one to observe which position of the switch will light up. The network cable of the corresponding port is the one connected to the computer that has just turned on. For some network cards, as long as the network card is connected to the LAN, the indicator light of the power-on or not is lit, which is not suitable for this method.
3. Network cable "hot swap": When the computer is turned on, unplug the network cable connected to the network card and observe which position the indicator light on the switch is off, so as to determine the network cable connected to the computer. The principle is the same as Method 2, but hot plugging is harmful to the computer.
The above method requires disconnecting the local area network, which can be completed by two people. When the computer is far away from the switch, you must also contact via a walkie-talkie or a mobile phone. If one person does this job, the labor intensity is very high. Some important LANs cannot be disconnected at will, so is there a simpler way? Of course there is!
4. Big data copying method: We know that the data indicators of switches and network cards will flash quickly when data transmission is performed. According to this feature, we can copy data from a designated computer and determine the connected computer by observing the data indicators of switches flashing quickly.
First, borrow a computer next to the switch, insert a short network cable into the port specified by the switch, confirm that the computer can be connected to the local area network (assuming that the computer is called test, which is connected to the switch port 1), and then check whether each computer in the local area network can be connected to the local area network. You can open "Online Neighbor" to see if you can find the computer used for testing: test, and at the same time set a big data folder on the computer to share (such as a shared C drive). Put a "number tube" on the network cable and note down the relevant data of this computer, such as the computer location, computer name, IP address, "number tube" number, etc.
Here you can do a quick pairing work. Open "Online Neighbor" on the test computer, double-click a computer, find its shared folder, and copy the big data file to the test computer. At this time, observe the data indicator light of the switch. There should be two location indicator lights flashing quickly and continuously. One is to connect to the test computer port 1, and the other port position is connected to the computer that performs data copying. Put the "number tube", record the port location, and complete the pairing of a set of network cables.
Open "Neighbors" on the test computer, find the shared folder of another computer, and copy the big data file to determine its port location on the switch. Complete network cable matching work in the LAN one by one.
Finally, delete the copied files on the test computer and cancel the shared folders set on the computer on the LAN. Organize the relevant data of the computer, the port correspondence between the computer and the switch, and the labeling records of the "number tube".
This method does not require disconnecting the LAN, detecting the connection status of the computer and matching the network cable on the switch can be completed by one person, which is convenient and fast.