The reasons why the optical modem cannot access the Internet after connecting to the router: 1. The IP address set by the router conflicts with the IP address of the optical modem; 2. The optical modem has set up a bridge mode, and you need to enter the broadband account password to access the Internet; 3. The network cable of the router is plugged into the network port 2 or 3 of the optical modem.
First of all, you need to understand the mode of optical modem. Generally, telecom optical modems have two modes, routing mode and bridge mode. Simply put, routing mode is optical modem dialing. You can access the Internet directly. The bridge connection is the router dial-up. You need to enter the broadband account password to access the Internet.
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The method to detect whether the optical modem is in routing mode or bridge mode is very simple. Look at the WiFi that comes with the optical modem. Whether it can be used or not, it means routing mode if it can be used, and bridge mode if it cannot be used.
The IP address set by the router conflicts with the IP address of the optical modem. To put it simply, the network segment of the router is the same as that of the optical modem. This will result in the inability to access the Internet. You need to change the IP address of the router to that of the optical modem. The IP address of the cat is different. The IP address of the optical cat here is 192.168.1.1, and the router is changed to 192.168.2.1/192.168.3.1, etc.
The network cable of the router needs to be plugged into the network port 1 or 4 of the optical cat. , if you can’t connect to the Internet even if you plug it into the two middle holes, the router’s Internet cable should be plugged into the WAN port
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