Common troubleshooting tutorials for wireless internet access

Exchange of visits failure one, access to the unit server speed slow

Accounting Xiao Li before work every day, all need to through the Wireless LAN network to upload the day's account information to the specific folder of the unit server, in order to let the leader review. Before the transfer of accounting information to the server, the blink of an hour can be completed; but recently the unit has adjusted the location of the wireless router, Xiao Li to the server upload capacity and the previous size of the account file, each time it will need to wait a long time. So why did Xiao Li transfer files to the server when the speed of the sudden decline, we should take what measures to let Xiao Li's workstation and the unit server exchange rate of return to normal state?

Considering the small Xian before the transfer of information to the server speed is normal, and adjusted the wireless LAN router equipment, he felt the wireless network transmission speed decreased significantly down, which indicates that this fault phenomenon is likely to be the location of the wireless router changes, resulting in a weak wireless signal caused by, Of course, there may be a unit of the server in a certain period of time is busy, resulting in the speed of Xiao Li's access to the server has been affected.

For the traffic caused by the busy unit server failure, usually not our ordinary users can solve, we can do is to avoid the peak server access, and every time to repeat access to the server, of course, the best way is to ask the unit's network administrator to find ways to improve the performance of the server itself, Ensure that the server responds to the user's access requests in a timely manner.

It is more common and often overlooked by ordinary users to reduce the failure of access speed caused by the placement of wireless routers. When the wireless router is placed in an inappropriate position, the wireless station can receive a relatively weak wireless signal, so when it transmits files over the wireless network speed is naturally very slow.

In order to solve this phenomenon, we can put the wireless router in the central location of the wireless LAN, while ensuring that the device and other wireless workstations can not be more than the interval between the cement walls, and one thing to do is to try to place the wireless router in a higher position, Only in this way can the wireless workstation obtain a better communication signal, so that the speed of access to the unit server can be effectively improved.

　　Mutual visits failure Two, every time can not access

Xiao Wang and Xiao Zhang in the office of the Unit through the Wireless LAN sharing the exchange of their own file materials, but in the process of mutual access, often encountered such a strange fault, that is just beginning to transfer files between each other, the wireless network transmission speed, but if not for a period of time to do any access, The wireless network indicates that the network connection has been disconnected and cannot perform any file transfer operations. So why this kind of failure phenomenon, how can we let such a wireless exchange operation become smooth?

In fact, in most cases, this phenomenon is sometimes not considered a network failure, because most wireless LAN now use wireless router devices, which often provide users with a variety of communication connections, but in the default state, most wireless router devices will use "on-demand Connection" mode, when using this mode of work, Wireless LAN in the detection of data transmission will be automatically connected, if there is no data in the network after a period of time to transmit, then the WLAN will assume that the current network line is in no-load state, then it will automatically disconnect the current network connection, so when we try to visit the wireless network next time to operate, Wireless LAN will naturally pop up the connection has been disconnected prompt.

In order to avoid this phenomenon, we must first log into the background configuration interface of the wireless router, and find the setting options for connection mode, and set the value of this option to "automatically connect, after power on and disconnect automatically", finally save the configuration parameters, and restart the wireless router device, I believe this wireless LAN will not have frequent disconnection phenomenon.

Of course, if the wireless LAN is still at every interval after the above set operation, then we need to check whether the current wireless LAN has suffered a network virus or hacker attacks, such as Wireless LAN once suffered ARP network attack, There are often strange phenomena that the network cannot access every once in a while.

At this point, we might as well open the local workstation's Network connection List window, right click on the wireless Network connection icon, click the "Properties" command from the popup shortcut menu, open the Wireless network connection's Property Settings window, select the "TCP/IP" setting option in the Settings window, and in the corresponding option property interface, Try to replace the IP address of the wireless network card by manual method, if the wireless network card updated address, the local workstation still often appear off the line phenomenon, then we only with the use of professional anti-attack software to protect the WLAN exchange operation.

　Exchange of visits failure third, cannot access the Internet through LAN

A unit has set up a wireless local area network where employees can access content directly from the Internet via a wireless LAN. But one day, the staff small Meng opened his workstation ready to surf the internet, found unable to access content on the Internet, when viewing the status of the wireless network connection, the discovery system prompted to be able to send out information, but not receive information. When we encounter this kind of access failure, how can we help our employees to properly access content on the Internet?

First check that the employee small Meng's workstation in the physical connection is correct. In this aspect of the inspection, we may wish to open the local workstation's IE browser window, and in the window address bar to enter the background management address of the wireless router, click Enter to open its background login interface, and then correctly enter the administrator account and password, into the wireless router's background management interface, Ping the local ISP's DNS server address in this interface, if the ping test operation is normal, it means that the wireless router to the Internet line status is unblocked, otherwise we need to check the wireless router's Internet parameters are configured correctly.

Second, in the wireless LAN to find a common workstation, and the workstation system interface switch to MS-DOS window, and then execute the string command "Ping aaa.aaa.aaa.aaa" in the command line of the window ( Where the AAA.AAA.AAA.AAA address is the internal interface address of the wireless router, that is, the gateway address of the local network, if the command can be executed successfully, it means that the local LAN network inside the line connection is normal, Otherwise, we need to check the correctness of the wireless router configuration and workstation configuration, and also check that the lines between them are unblocked.

If the above several ping tests can pass, but also cannot access the Internet, we also need to check the normal workstation's Internet parameters are set correctly, such as the gateway address inside the workstation and DNS address is correct. When we confirm that these parameters are OK, let's check the wireless router's configuration for NAT is correct, if we can't find the error from the router configuration, we can check the NAT address translation table again, of course, this function needs our wireless router support.

　Failure to access the wireless router backend interface

The recent unit of wireless LAN frequently occurred IP address conflict phenomenon, later after the unit network administrator Small Xu's careful examination, found that in addition to a dedicated DHCP server in the LAN for workstations to assign addresses, the wireless router's own DHCP service is also "Rob" the workstation assigned an IP address, As a result, the workstation's IP address is of course prone to conflict. In order to eliminate the IP address conflict, the network administrator is ready to log into the wireless router background interface, the DHCP service has been enabled to temporarily deactivate, but who had thought of small Xu in his workstation to try to log in to the wireless router backstage, how can not open its background login interface, this is why?

The cause of this failure is many, different reasons need to adopt different methods to deal with, which hardware failure causes more common, such as network cable break or short-circuit, network connection connector appeared loose phenomenon, wireless router itself has hardware failure. For hardware failure reasons, we usually can determine if there is a problem with the hardware by looking at the status of the beacon in the control panel of the wireless router. Of course, if the input voltage of the wireless router is not normal, or the temperature inside the device is too high, or if the device encounters lightning strikes, it is also easy to cause the wireless router background interface can not access the fault.

In the exclusion of the wireless router background interface phenomenon, we first need to check the wireless router control Panel in the operating status of the data beacon is normal, for example, when the power signal is in an intermittent flashing state, it indicates that the device's input voltage is normal, If other lights in the control panel of the wireless router are not working properly, then we can only do a targeted investigation based on the status of the corresponding beacon.

If the wireless router background interface is still not accessible after the hardware is excluded, then we might as well check the network connection parameters on the local workstation, especially to check if its IP address is on the same subnet as the default IP address of the wireless router, if not, We might as well assign a suitable IP address to the local network card, and as far as possible to the local workstation firewall features temporarily screened out, I believe this will be able to resolve the failure to access the wireless router background interface.

Of course, if the above operation is not valid, then we may wish to press the wireless router Control Panel in the reset button in order to restore all the operating parameters of the device to the factory settings, it is not enough, it may be possible to reinstall the wireless router driver. Of course, if all of the methods are not able to solve the problem, then we only have to contact the device manufacturer and check the related hardware conflicts.