Detailed analysis of layer-by-layer technical mysteries of wireless router exceptions (1)

In the days when wired networks are everywhere, the "figure" of the wireless LAN is approaching us, and there is a great way to work together with wired networks. Considering that the current wireless LAN networks are all made up of wireless routers, the efficient access to the wireless LAN is closely related to the status of the wireless router. Unfortunately, after a long period of work, the Wireless Router, there are often various "strikes". If these phenomena are not promptly ruled out, the Internet access efficiency of the wireless LAN will be significantly affected. In view of this, this article will summarize the frequent occurrence of wireless routers and explain each of these mysteries one by one!
Puzzles about automatic dialing for wireless routes
When using a wireless router for broadband dial-up Internet access, we may often encounter the strange phenomenon that the device cannot automatically dial. In this case, we can troubleshoot from the following aspects:
First, check whether your wireless router has obtained the permission from the local telecommunications department. If the device has not obtained the permission from China Telecom, then, when a Wireless Router performs a dial-up operation through the line provided by the local telecommunications department, it is prone to the failure of automatic dial-up. For example, a wireless router may be available in the South, but it may be abnormal in the north. To solve this problem, generally, you need to upgrade the firmware of the wireless router to ensure that the wireless router dialing is normal. Currently, the wireless routers and broadband routers released on the market are not compatible with the ADSL Network Line Equipment of the local telecom department. Even if these products are compatible with Dial-Up, however, faults such as dial-up disconnection may also occur during regular use. In fact, we can use the ADSL client device provided by the local telecommunications department for dial-up Internet access. After all, these devices have built-in PPPoE dial-up functions, this dial-up function is almost recognized by the local telecommunications department. Using the PPPoE dial-up function provided by the ADSL client can ensure that the dial-up Internet access is stable and fast.
Second, check whether the parameter settings of the wireless router are correct. In particular, check whether the MTU value is set correctly. When the dial-up Internet information is transmitted over the network, it is often automatically divided into data packets of different sizes. the MTU value parameter is used to specify the data packet size standard. The larger the MTU value, the larger the size of the data package. Theoretically, it can increase the transmission rate, but we cannot set the MTU value too large at will, after all, when the data package is too large, dialing information is prone to errors during transmission, especially when it does not match the local device parameters of the Telecommunications Department. Under normal circumstances, when using the PPPoE dial-up method to connect to the Internet, we can set the MTU value to the maximum 1492, if you use LAN to access the Internet, you can set the maximum MTU value to 1500. therefore, when the wireless router cannot automatically dial, we can go to the background settings page of the device and check whether the MTU value of the device is 1492. If any error is found, it must be modified in time.
Let's see if the working method of the ADSL client access device is set correctly. Generally, the access devices of the ADSL client mainly include the adsl modem and the adsl router. The adsl modem only supports bridging, the adsl router supports both bridging and routing modes. Adsl router is a widely used broadband access device, which supports data encapsulation methods such as PPPoE, RFC-1483 bridging, PPPoA, enet encap, etc, if we are using an adsl router device and a wireless ROUTER device for networking, we must first connect the dial-up line through the adsl router device to the wireless ROUTER, then, the Wireless ROUTER performs the PPPoE dial-up operation. We also need to adjust the working mode of the adsl router device to the RFC 1483 bridge mode before connecting to the wireless ROUTER; finally, log on to the backend Management window of the wireless router, set the network access mode through the parameter setting wizard function, and select the ADSL PPPoE dialing mode when setting the access mode, at the same time, set the account information provided by the ISP service provider and the VPI/VCI parameters correctly. We believe that, after the above efforts, the failure of the wireless router's automatic dial-up will surely be able to be ruled out.
Puzzles about setting login failures for wireless routes
To make the wireless router work efficiently, we often need to set it correctly. However, when we try to log on to the WEB management page of the wireless router and set the parameters for wireless Internet access, we often encounter logon failures. How can we solve this fault?