Visual commentary: Eliminate the "double router" state of Wi-Fi

[Click here for article] Eliminate Wi-Fi "double routers" Prevent troubles with games

Figure 1 Many home gateways (HGW) and ONUs (optical network units) for optical line connections are equipped with router functions. If you connect a Wi-Fi router here, the router functions such as DHCP and NAT may work double. This does not cause many problems, but depending on the usage environment, it may cause problems Figure 2 Start the command prompt, enter "tracert -d 8.8.8.8" in half-width characters, and press the "Enter" key (1) (2). This is a command to check the route of the router to the specified server, and it is arranged in order of passing through. IP addresses starting with “192.168.…” are generally assigned to routers in the home, so if there are two, you can tell that you have a double router (3). By the way, "8.8.8.8" is the IP address of Google's server, so you can change it to "yahoo.co.jp" etc. Switch to "AP (Access Point)" or "BR (Bridge)" Fig. 4 Depending on the product, there are cases where you can switch from the router settings screen Fig. 5 Wi-Fi routers switched to access points have functions such as DHCP and NAT turned off connected to the network in the same group as other Wi-Fi devices. A Wi-Fi router is an image of a switching hub with wireless functions

[Nikkei PC21 January 2022 issue restructured]

[Click here for article] Eliminate Wi-Fi "double routers" Prevent troubles with games

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