How to use telephone lines, cats, and routers to access the Internet

Using telephone lines, cats, and routers to access the Internet two days ago, I took my laptop to my uncle's house. I heard my uncle say that his router may be damaged by lightning strikes. He previously contacted the carrier China Unicom. After checking that the router is broken, he could use a cat to access the Internet. After a few days, only one computer at home can access the Internet. I checked and found that there was no problem with the route. After the route was set up, the network could be accessed normally. The operator was so confused. The first time you configure the cat and vro, you must read the manual. I connected my laptop to a cat using a network cable according to the instruction, set up a new broadband connection, and enter the user name and password for the connection, so that I can access the Internet. Then, add a vro between the cat and the laptop, and configure the vro as a dynamic IP according to the instructions. Change the vro configuration to pppoe so that you can access the Internet. The vro configuration process is as follows: 1. If you have modified the default vro user name or password, you can reset the vro. There is a reset button on the vro。, And the reset is successful after several seconds until the led flashes quickly (different routers may be different. The manual contains the default user name and password. My default user name and password are admin. 2. Open the address bar of your browser and enter 192.168.1.1 or 192.168.0.1 (please refer to the instruction manual for details). Enter the user name and password admin on the logon page. 3. In the setup wizard, select the pppoe mode. The Internet account and password entered later are connected to each other and IP addresses are dynamically allocated. At that time, I realized that the original feature of the router was automatic dialing through the cat. I used to select the dynamic IP address mode according to the instructions and did not dial the number. Of course, I cannot access the network. When I was not able to access chrome, my website showed that the dns server was not responding. I thought it was a dns setup error, which wasted a lot of time.