College】 【weak unstable network connection from the cable short-circuit may} {Zhuantie.

<br> <BR> unit to adjust the office recently, I also will be for laptop plug the other network cable for Internet access, but access in the new location, the network connection is always unstable, frequent intermittent phenomenon. .After I repeated testing, and finally find out the culprit Huai crime network failures, even short-circuit occurred in the network cable. .Exclude users in the future in order to avoid the same type of network failure and more detours, and now the writer's contribution to the Trouble out of the process, to share with you friends! .<BR> <BR> Playback <BR> <BR> fault in the desk moved to a new location, the author of the notebook computer will connect to the new network cable, the cable can plug directly thought the Internet ., but who would have thought, a new network cable into the RJ45 port on the notebook, the author found that all web content is not open. .Such a phenomenon should not Yeah, after all, in which the laptop is still the same LAN, then the notebook computer does not need to change the network settings; take this into account, the author believes that there is no network cable is definitely plugged in, so .I have taken the trouble to the network cable from the RJ45 port on the notebook to pull out, and later re-inserted a moment, after the network cable plugged in, I see the local workstation system tray area at a "local connection" status icon, which means .the cable network connection has been successfully inserted. .However, when I use the mouse double-click "Local Area Connection" status icon from the pop-up interface then found out the local workstation can only send data, and can not receive any data from the outside. .<BR> <BR> Troubleshooting <BR> <BR> encounter "local connection" can only receive information, can not send a message of failure phenomenon, we often need to test the local workstation related hardware device is working properly, if .there is no hardware problem, need to check the local workstation system and network settings are set correctly. .<BR> <BR> To determine whether the device is working properly card, I right-click the desktop in the "My Computer" icon and the shortcut menu, click "Properties" command, open the System Properties settings window .Click the window the "hardware" tab, and in the corresponding tab page, click "Device Manager" button, go to the local workstation in Device Manager window; in the window, expand the Network Adapters branch, and double-click the branch .The following target card equipment, LAN equipment, the property is set to open interface, click the Settings screen in the "General" tab, enter the settings shown in Figure 1 the label page. .In the page of the "Device Status" place, I see the current network adapter device is working properly, indicating that the card device is not present any problems. .<BR> <BR> Factors ruled out the card, I turn suspicion toward the office that sets the hub, is it the hub interface to the load capacity can not I? .To eliminate this factor, the author Shunshou Jiang network cable connecting laptop changed the HUB interface, but once again testing the Internet, laptop computer or open the Web page can not be smooth; it is clear that this failure is not the hub interface, the phenomenon seems .caused. .Is your notebook system settings or network settings there is a problem? .Taking into account the author in the previous office location using the same laptop, since before the normal Internet access, it means that the notebook's system settings or network settings should be correct ah. .I caught a confused situation, how to troubleshoot network connectivity fault instability in it? .<BR> <BR> In desperation, the author's eye was suddenly attracted by the mess the network cable, network cable will not be a problem? .Since I have been on the laptop's hardware and software related to the inspection, and only did not check the network cable, so I immediately borrowed the unit a dedicated network administrator cable tester to start the piece of network cable connecting the notebook .connectivity test; test results showed that the network cable wire in the 1,2 state in the flow, 3,6 No wires in the flow state; may be surprising is that even core wire 2,3 is also .flow state, which means that the network cable to connect laptop to which the short circuit problem, it is precisely because this issue has led to instability in network connection failure. .<BR> <BR> More professional because I did not hand test equipment, it is difficult to accurately locate the author in what position the network cable short-circuit occurred. .Considering we usually use the 100M network cable is generally used 1,2,3,6 This four-core line, and the remaining four-core line is idle. .If we try to use the free four-core line as a communication signal lines, the network cable should be able to work it? .Think of to do, I quickly started to re-do a bit at both ends of network cable connecting laptop crystal head, once again testing the Internet, found the notebook I can now open the page content correctly, and it lasts a long time, the network connection does not appear .off phenomenon. .Thus, the network connection failure instability phenomenon has been successfully resolved. .Summary <BR> <BR> <BR> <BR> failure caused by unstable network connection for many reasons, many people tend to assume that most of these symptoms is because card, cable, switches and other loose connection between the .result, and rarely think of their own network cable will short-circuit phenomenon, after all, these people think that network connections can sometimes pass, it shows that the network cable must properly. .In fact, the network cable or the cable jacket being squeezed by the frequent breakage of the phenomenon, these phenomena are likely to cause a short circuit fault network cable. .Faced with this failure phenomenon, conditional replacement of network cables, the best time for using the new cable, replace the cable if no conditions or can not replace the cable, that we can consider using the free line to the core .alternative short-circuit state of the core is already in line. .<BR> <BR>, Of course, in order to avoid instability in network connection failures, we had better use the good quality of the network cable, and cable networks to control the transmission distance, do not let the network cable and high-voltage cables, .Communication cables intertwined with each other, because the quality is good or bad cable, transmission distances, and by the level of the external signal interference, network connectivity may cause the instability. .<BR> <BR> In addition, users need to remind you to note that a similar encounter in the local area network connection unstable failure, we should focus on the LAN equipment is operating correctly, such as network cards do not have reliable equipment, LAN equipment .contact with the network cable is between the bad device is too old card, network card driver has not been properly installed and so on. .<BR>.