Wireless troubleshooting method for Always "connecting" _ Networking Tutorials

The accident, the initial investigation

As wireless internet equipment, the "price" has been declining, wireless networking technology gradually mature, more and more units and even individual households are beginning to choose Wireless network mode to go online. In the enjoyment of wireless network to bring us convenient, fast, at the same time, we sometimes encounter some strange wireless network fault "harassment", encountered these unresolved wireless internet failure, we are not a little disappointed?

But we can not always encounter a small fault on the sesame to go to the professional and technical personnel to deal with it, some wireless network failure to do their own work can be successfully resolved off. This is not, the following author will have encountered a case of "connecting" wireless network troubleshooting process contributions, I hope to help you!

"Connected" failure

In order to keep up with the trend of the Times, the author of the office deliberately used without wiring by ADSL dial-up way to surf the internet, usually in the office of several laptops can be normal through the wireless network to surf the Internet. However, recently I connected to the notebook computer power, ready to search for work information online, found installed in their own notebook computer wireless network card device always prompts the author said "is connected."

Because the author was anxious to find information, so found that "is connected" prompt, the author or forced to open IE browser to access the content of the Web page, the results found that the network access to all normal, the author quickly found the information on the internet they want. And then every time you surf the Internet, the wireless card device in the notebook computer still "bother" to hint "is connected" information, although this does not affect the author's network access operation, but "is connected" hint forcibly appear in front of the author, this let the author feel very uncomfortable, so the author uses the manual method forcibly disconnects the wireless network connection , and then want to reconnect to the wireless Internet connection.

But this time let the author unexpected things happen, when the author forcibly disconnected from the network connected, the notebook computer Incredibly can not find the available wireless network nodes. After the laptop restart, the author found that the wireless network card device is still unable to find wireless networks. Forced, I had to the office of the wireless router to restart the original thought that this can solve the network fault, but the result or let the author disappointed unceasingly, notebook computer still can't find wireless network.

Carefully examine the possible factors

After repeatedly restarting the wireless network device, the wireless network fault still cannot be solved, the author realized that the unit's wireless network may have encountered the problem. The author carefully checked the installed in their own notebook computer wireless network card equipment, found that the device signal is in normal working condition.

Direct touch with the hands of the wireless network card equipment surface, the author did not feel that there is overheating, and I did not from the wireless network card equipment "body" smell what smell, the author estimates that the wireless network card equipment Working condition of all normal. After the author came to the office of the wireless router, carefully observed the device flashing state of the signal, found that the wireless router signal working state is also very normal, and direct touch with the hands of wireless router device shell, found that the device also did not appear overheating phenomenon. Obviously, wireless network card devices and wireless router devices are not in the hardware, the problem may appear in the parameter settings or system settings.

In view of the author's office network is through the wireless router plus ADSL equipment formed, in order to effectively ensure the Internet security of the Office wireless network, the unit's network administrator has been logged into the background of the wireless router device, the wireless network SSID broadcast function to the shutdown, while the wireless network for WEP encryption. As the author of the notebook computer and wireless router in the same office, then the wireless network card device and wireless router device should be very close to the distance, the author estimates that such a short distance should not occur on the Internet information to accept the situation. Since the wireless network card device always prompts the "connecting" information, is it possible that the communication protocol in the notebook computer had an accident?

Because of work, the author in their own notebook computer at the same time installed some other network communication protocols, the author estimates that it is likely that the communication protocol set improperly, resulting in wireless network card equipment can not work wholeheartedly; So, I immediately opened the local wireless network connection Properties Settings window, The other temporarily unavailable communication protocols were removed from the Settings window, and then the laptop was restarted, but the laptop still failed to find the available wireless network.

Deep Research, problem solving

So how did the fault actually happen? Under the helpless, the author calm down to start on the wireless Internet connection process was carefully combed. In the wireless Internet access, the wireless network card devices in the notebook computer should be able to receive wireless internet signal, but also can correctly identify the name of the SSID of wireless networks, then match the relevant communication protocol, and finally in the corresponding protocol to connect to the wireless network. Now that the author's notebook computer can not search the wireless network, it is possible that the name of the SSID encountered an accident?

With this in mind, I went to the wireless Network Connection Properties Settings window, where I deleted the preferred network that was previously set up, and then added a wireless network to the correct way, but that's not going to work. At this point the author can think of the failure factors are sorted out, but can not find the wireless network fault is still not resolved, then what is the factor I have not thought of it?

After the author's repeated thinking, finally I intend to start from the wireless router again to check. Considering that before the network failure, the colleagues in the office did not make any changes to the wireless router settings, so the wireless router should theoretically have no fault. However, from the actual problem, notebook computer since the pop-up prompts that can not be connected to the network, the fault factors can only be from the wireless router, wireless Internet clients and their communication between the three aspects of search, and wireless Internet access between the client and their communication between the two factors have been excluded, It seems that the problem can only be on the wireless router device.

If the wireless router fails, then where is the fault? In order to verify whether the wireless router is really faulty, the author immediately through the control cable into the wireless router device background management interface, find the "Allow SSID Broadcast" setting option, with the mouse to select the option, while performing the save operation, and finally the wireless router device restarted. After the wireless router device restarts successfully, the author again tries to search the wireless network in own notebook computer, this time the wireless network card device unexpectedly pop-up prompt to say that the wireless net connection succeeds, moreover when attempts to access the network content actually also succeeded, this indicated that "is connecting" the wireless fault has disappeared.

Probing the cause of failure through the phenomenon

However, I still do not understand why the "Allow SSID Broadcast" setting option can solve the problem? Many times, in order to consider the security of the local wireless network, we often will be the "Allow SSID Broadcast" setting option to turn off the selected state, according to the reason that the "Allow SSID Broadcast" feature, should not cause "connecting" wireless fault AH?

The author finds that it is definitely not the "Allow SSID Broadcast" feature of the wireless router that caused a "connecting" wireless fault, possibly a bug in the wireless router operating system itself, which caused the wireless network to operate abnormally; To verify that the "Connecting" wireless fault is really related to the wireless router operating system, The author again enters the backstage management interface of the wireless router device, the "Allow SSID Broadcast" feature is turned off in this interface, and then the device's system is restarted, and then the wireless network connection is found to be disconnected and wireless network access is normal. This means that the wireless router operating system does have bugs.

So why do the wireless network card devices in the notebook computer always have the "connecting" prompt, but you can access the network normally, and the laptop is simply unable to search the wireless network after disconnecting the wireless connection?

After careful analysis of the author, that wireless network card devices in the pop-up "connecting" prompt when the normal access to the network, it is likely to be installed in the notebook computer too much communication protocol caused. When we forcibly disconnect the wireless network, the wireless router operating system's own bugs may have caused the wireless router to operate abnormally, causing the wireless network card device to not be able to search for wireless networks.