If the router to connect to the Internet successfully, but you can't access the Internet or open a web page from your LAN devices, here are some steps for you to perform the troubleshooting by yourself.
1. Right-click on the Start icon, then click Run.
cmd then click OK.
3. Then the command prompt window will appear.
ipconfig then press Enter to execute.
If you have an IP address, subnet mask, and the default gateway is pointing to the router's LAN IP, please move to the next part.
If not, or it doesn't match the router's settings, please check the cable or wireless connection to the router, and the IP configuration of your device. You can try to set the network adapter to obtain an IP address automatically. However, notice that the computer can only get an IP if the router enables the DHCP server.
Check the connection between the computer and the router
ping <router's IP> (e.g.,
ping 192.168.197.1) and press enter to execute.
If Command Prompt shows replies from the router's IP, it means the connection to the router is up, please move to the next part.
If Command Prompt shows "General failure," please check the status of the router and the cable or wireless connection.
ping <an IP on the Internet> (e.g.,
ping 184.108.40.206) and press enter to execute.
If it shows replies, please move to the next part.
If you do not get the reply from 220.127.116.11, please check WAN connection of the router, also confirm there are no Firewall, User Management, and Route Policy setting will block you from the Internet.
ping <domain name> (e.g.,
ping google.com) and press enter to execute.
If Command Prompt shows Request timed out, please check if the router and computer have configured a proper DNS server.
If you get the reply from the website, this means the site is online, and you can reach it from your computer.
However, if you are not able to open a website with your browser or the website does not print out completely, it may have something to do with the MTU (Maximum Transmission Unit) setting of your router. To check and set MTU to the proper size, please refer to Optimize the MTU Size
If you still cannot open a web page after optimizing the MTU, the web page may be blocked by the Content Filter, check the Firewall and Content Filter. To distinguish it, you can disable the Firewall and try to surf the website again.
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