Wireless network troubleshooting Division

Whether it is the use of network technology or the troubleshooting of network faults, we should have a certain understanding as a network administrator, so here we will explain in detail. How many of us know about wireless network technology? We have summarized some common troubleshooting techniques for wireless network faults.

Wireless routers have become increasingly popular for wireless Internet access. However, during wireless Internet access, we often encounter various kinds of wireless network faults, these network faults seriously affect normal internet access efficiency. As a matter of fact, we only need to strengthen our troubleshooting at ordinary times and summarize our experiences in troubleshooting various common wireless network faults in a timely manner. We believe that we will be able to manage wireless networks in the future!

Troubleshoot connection lines to resolve wireless network faults

When you view the wireless network connection status information, we sometimes see that the wireless network can send information externally, but cannot receive information from the outside, this one-way communication will obviously affect our normal wireless access operations. When one-way communication in wireless networks is troublesome, We Can troubleshoot the problem one by one based on the following ideas:

First, ensure that the wireless network connection line is smooth. When checking whether the line is connected, we can open the IE browser first, in the pop-up window, enter the default IP address used by the router in the address bar (this address can be found from the router Operation Manual), and then enter the router login account correctly, open the vro background management interface. Then, run the ping command on the management interface to ping the DNS server address provided by the local Internet service provider. If the target address can be pinged, it indicates that the connection between the router device and the Internet service provider is in a smooth State. If the target address cannot be pinged, it indicates that some parameters in the router may not be set correctly, in this case, we must check the configuration parameters in the vro one by one.

On the premise that the internal configuration parameters of the vro are correct, we can find a workstation with correct network configuration and normal Internet access in the LAN, and execute the ping command in the workstation, ping the IP address used by the router. If the IP address can be pinged properly, it means that the connection between the lines in the LAN is also in a smooth State. If the IP address used by the router cannot be pinged, therefore, it is necessary to check whether the network parameters used by the local workstation are consistent with those used by the vro, that is, whether their address parameters are in the same network segment. If the above addresses can be successfully pinged, but the wireless network connection is still in the status of sending and not receiving, check whether the DNS parameters and gateway parameter settings of the local workstation are correct. After confirming that these parameters are correct, we need to go to the vro backend management interface again, find the NAT parameter setting option and check whether the option is correctly configured, we need to check whether the NAT address translation table contains any translation entries for the internal network address. If there is no translation entry in the translation table, the wireless network failure is mostly caused by improper NAT configuration, in this case, you only need to correctly Add the translation entries of the internal network addresses to the NAT address translation table.

Troubleshoot connection methods to solve wireless network faults with intermittent network disconnection

When a local LAN is connected to the Internet through a wireless router, if the workstations in the LAN often fail to access the Internet for a while, first, we need to ensure that the Internet access parameters between the workstation and the wireless router are correct. Therefore, we should focus on checking whether the connection mode of the wireless router is set properly. Generally, a wireless router device supports three or more connection modes. However, by default, most wireless router devices use "On-Demand connection, this connection method is used to automatically connect when data is accessed. In other words, at a certain time, the wireless router automatically checks whether there is no-load line at this time, if the device does not detect data interaction on the line after successful connection, it will automatically disconnect the connected wireless connection line. To this end, when we encounter intermittent network disconnection due to wireless network failures during actual Internet access, we can try to go to the wireless router backend management settings interface and find the connection method setting options, check whether the parameter of this option has been set to "automatic connection, automatic connection after startup and disconnection". If it is incorrect, you must modify the connection method in time, finally, perform the save operation on the backend management interface, save the previous Parameter Modification Operation, and restart the wireless router device. I believe this will solve the intermittent network disconnection in most cases.

Of course, when the above settings still cannot solve the intermittent network disconnection problem, we need to check whether there is a network virus attack in the Local Wireless LAN, because once the ARP network is attacked by a virus, intermittent network disconnection may also occur. In this case, open the local connection attribute settings window in the local workstation system and go to the properties settings page of the NIC device, in this interface, try to modify the IP address used by the NIC to see if intermittent network disconnection still occurs under the new IP address condition. If the wireless network failure persists, we must use professional antivirus tools and software to protect the wireless LAN.