The WAN Settings of router B are unchanged by default, the LAN segment of router B is the same as that of router A (for example, 192.168.1.2), and DHCP is disabled. This afternoon, I thoroughly made WDS again, tried all kinds of methods, and summarized the experience: Level 1 router and WDS level 2 router must be in the same network segment, the WAN port of the level 2 router does not need to be set (default), because his wan port is not wired at all, as long as the channel is changed, secure connection, encryption, password is all the same, level 2 router DHCP must be turned off. After many people WDS bridge successfully, but after connecting 2 routers still can not access the Internet, or only 1, after N experiments, I finally figured it out myself.
The success of the 2-level router WDS can only be said to be more than half of the success, and the key depends on whether the IP and DNS assigned by the router to the receiving device (such as computers, mobile phones, etc.) are correct.
If you turn on DHCP for level 1 router and turn off DHCP for level 2 router, all the receiving devices choose to automatically obtain IP. If you can access the Internet, it means that the router software is very advanced, but most people encounter the problem of not being able to access the Internet, some people can access the Internet because they set their computers and mobile phones to manually obtain IP, so they can successfully access the Internet. What if some devices do not have manual Settings?
Therefore, the complete solution is: in the DHCP server menu of the tier 1 router, select \"static address reservation\" and assign a static IP to the MAC of each access device, including the MAC of the tier 2 router!
At this time, the level 2 router is set to a static ip, which is used as its LAN port IP, which can solve the problem of WDS success, but can not be connected to the Internet. The experience is as follows: In a level 1 router, enable DHCP, and set the static IP address to the mac of all devices (including routers) that want to access the Internet. For a level 2 router with WDS enabled and DHCP disabled, the LAN port IP is the same as the static IP assigned to it by level 1.
If the setting still can not be assigned to the correct ip, you can turn off the power of the level 1 router, restart the router, because often change the parameters after the error, so restart the router is necessary.