TP-Link Archer C50 User Manual page 22

 If the result displayed is similar to Figure 3-2, it means the connection between your PC and
the router failed.
Please check the connection following these steps:
1. Is the connection between your PC and the router correct?

Note:
The Ethernet LED on the router and LEDs on your PC's adapter should be lit.
2. Is the TCP/IP configuration for your PC correct?

Note:
If the router's IP address is 192.168.0.1, your PC's IP address must be within the range of
192.168.0.2 ~ 192.168.0.254.
3. Is the default LAN IP of the router correct?

Note:
If the LAN IP of the modem connected with your router is 192.168.0.x, the default LAN IP of the
router will automatically switch from 192.168.0.1 to 192.168.1.1 to avoid IP conflict. Therefore, in
order to verify the network connection between your PC and the router, you can open a command
prompt, and type ping 192.168.1.1, and then press Enter.
Archer C50
Figure 3-2 Failure result of Ping command
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AC1200 Wireless Dual Band Router