Uncover the mysteries of Wireless LAN operation

Wireless networks have become the focus of the masses. While using wireless networks, we also encounter many unstable problems. How can we solve them?

Wireless LAN attracts many Internet users by virtue of its convenient connection and simple usage. However, after a period of time on the wireless LAN, we may often encounter unstable wireless Internet access, online disconnection may occur frequently. In the face of common wireless Internet connection failure, we often simply restart the wireless router device to easily solve the problem, but there are also some unstable wireless Internet access faults, the method of restarting the system does not solve the problem at all. At this time, we can gradually troubleshoot and remedy the problem so as to get rid of the unstable operation of the wireless LAN!

Causes of network instability

In a LAN working environment where wireless routers are used for Internet sharing, the main causes of unstable network operation may include Wireless Interference, parameter setting, and load overload. Ordinary wireless router devices in a wireless LAN use free Wi-Fi frequencies, while everyday electronic products, such as air conditioners, microwave ovens, Bluetooth, and electronic remote controls, the same frequency band resources are used. Wireless routers are vulnerable to interference from these devices during their work. In a wireless LAN Operating environment where dynamic and static addresses are mixed, improper address pool parameter settings can easily cause address conflicts and network instability. In addition, it is also important to set channel parameters; if a common wireless router is frequently attacked by large data traffic or runs for a long time, the stability of the LAN is easily affected.

Remedy the problem

Well, the above lists the main causes of unstable Wireless LAN operation. After figuring out the cause of the fault, how can we remedy the problem and find a solution to the fault?

1. Eliminate signal interference factors

Generally, the wireless LAN work environment is relatively random, and the placement location of the wireless router may be changed frequently. However, considering that when the wireless router is working, data packets are transmitted through electromagnetic wave signals, and electromagnetic wave signals are easily disturbed by common electronic products. Therefore, when we encounter unstable failures in the wireless LAN, check whether the placement of the wireless router is suitable. For example, check whether there are high-power electrical devices like refrigerators, washing machines, air conditioners, and microwave ovens near the wireless router, or is there a communication device such as a cordless phone. When working, these devices will produce electromagnetic signal interference to the wireless router device, affecting the stability of the wireless LAN.

To ensure that the wireless router device is far away from electromagnetic interference, we should try to place the device in an empty location in the middle of the Office. The reason is that the signal transmission range of the wireless router is a sphere, in an empty area in the middle of the Office, the diameter of the wireless network signal transmission range can be ensured to cover the entire office, so as to achieve stable and efficient signal transmission effect, so as to achieve stable Internet access. In addition, the antennas of many wireless router devices are omnidirectional, and their placement angles also affect the transmission efficiency of wireless signals. As for how to adjust the antenna angle to obtain the best online effect, we also need to adjust the antenna angle repeatedly based on the actual environment.

2. Eliminate Device Drivers

In a wireless LAN, the most common factor affecting the stability of wireless Internet access is the stability of the client system, especially the driver of the client wireless network card, many laptop client systems are prone to frequent disconnection due to incorrect wireless NIC Driver Installation or driver compatibility issues.

Therefore, when we find that we are not able to surf the Internet stably in a wireless LAN, we need to first check whether our wireless Nic device is guaranteed in terms of quality. For example, we can enter the system Device Manager, check whether the working status of the wireless network card device is normal. When you confirm that the wireless network card device is working properly, go to the property settings page of the device and check whether the driver version is outdated, once the driver version is found to be outdated, update it to the latest version. If the wireless Nic device is directly connected to the wireless router in the LAN, we need to consider the compatibility between the wireless network card and the router, because in addition to the wireless set equipment, there are many brands of wireless routers and wireless network card devices are not very compatible with each other.

3. Eliminate channel conflicts

In the same unit, many wireless routers in the office may use the same Internet channel, which is prone to channel conflicts, thus affecting the stability of the wireless LAN. To this end, when we encounter wireless connection speeds or frequent disconnection failures, we can check whether there is a conflict in the channel selection of the wireless router. Generally, the IEEE802.11b/g standard wireless router supports 11 channels, but the device with Channel 3 is used to interfere with the device with Channel 1 and Channel 6, if Channel 9 is selected, it will interfere with the devices using Channel 9 and Channel 13. To avoid channel conflicts between their wireless routers, we can try to enter the background management system of the device and adjust the channel parameters to uncommon wireless channels. For example, we can set the channel of the wireless router to one or six channels, it can also be set to 11 or 13 channels. These channels are often not prone to channel conflicts.

4. address conflict Elimination

If we set some important client systems in the wireless LAN to use static IP addresses, and all other client systems use dynamic IP addresses, once the important client systems are shut down for a period of time, when you connect to a wireless LAN again, address conflicts may occur, which may also affect the stability of the wireless LAN. The main cause of this instability is that we have not correctly set the DHCP service parameters for the wireless router, which causes the DHCP server to automatically allocate static IP addresses. When an address conflict occurs, you only need to go to the Web Management page of the wireless router, open the DHCP service settings area, and set the address pool parameter to an IP address other than the static address, in this way, the Common Client System in the wireless LAN cannot obtain the specified static IP address, so the stability of wireless Internet access is naturally guaranteed.

5. eliminate excessive load

Since the establishment of a wireless LAN, I believe that everyone will be eager for wireless Internet access. But the larger the number of people accessing the internet, the larger the Internet data traffic, the worse the stability of wireless Internet access, this is because the load capacity of a wireless router is limited. Once the load on the Internet exceeds its capacity, the router will frequently fall offline.

In order to eliminate the excessive load on the wireless router, we must first limit the BT downloading in the wireless LAN, online games, and other abnormal operations that affect traffic and bandwidth, as well as the number of connections to the wireless router, try to make no more than 10 computers on the Internet. In addition, for Internet users who have enabled and run wireless routes for a long time, we need to take measures to heat the device so that no unstable wireless Internet access failure is caused by poor heat dissipation.

6. Eliminate network virus factors

In a wireless LAN, due to a large number of wireless Internet users, the wireless LAN may suffer from network virus attacks, and the network virus is frequently attacked, it also affects the transmission stability of the LAN. Therefore, we need to take measures to prevent viruses from spreading and spreading in the wireless LAN, so as to avoid network viruses blocking the Internet transmission channel, resulting in slow Internet access speed or wireless router disconnection. In general, when the speed of Wireless LAN access suddenly slows down, we often realize that this is probably caused by a network virus. At this time, we can disconnect the network and use the new anti-virus software to kill the virus, to restore the network connection speed.