When one day, your home network suddenly becomes unreachable, the computer can't connect to the network, and the phone can't connect to the network. Looking for a big god friend, I am embarrassed to owe a big person; if I look for someone to pay for it, people will feel a bit stiff when they charge for three or five minutes. Bao Yun this little article may be worth your collection forwarding. [Make sure the line is connected correctly and in good contact] Maybe you have moved the line, maybe someone else accidentally bumped into something. If you know how to connect, check if it is tight. If you don't know how the line is connected, Baoyun will show you something. 1. ADSL broadband, line connection method with splitter 1. The incoming telephone line is directly inserted into the splitter with only one hole; 2. The ADSL/Line port of the splitter is connected to the broadband port of the broadband cat (telephone line/RJ11) 3. The broadband port of the broadband cat is connected to the WAN port of the router (network cable/RJ45); 4. The Phone/TEL port of the splitter is connected to the telephone or fax machine (network cable/RJ45); 5. Any LAN port of the router Connect with the computer (network cable /RJ45); 6, between the wireless router and the mobile phone or notebook, you can directly connect to the wireless (wifi). Note: If you do not answer the phone, or do not have a splitter, the incoming broadband line is directly plugged into the broadband cat Line port. Second, the optical fiber broadband line connection method 1, without IP TV, without a phone, only the broadband connection picture from the Baidu Gallery home fiber access optical cat PON port; light cat LEN port and router WAN port connection (network cable); The LAN port of the router can be connected to the computer. 2, with IP TV, telephone broadband connection method Fiber access to the cat's network G port; phone access to the cat's voice port (optional); network 1, 3, 4 port to the computer, or to the router WAN port (this A point is very important, the general 2-port network set-top box); iTV /network 2 connected to the set-top box. [Check if it is connected to the router] First, you need to know what the gateway is. This can be seen in the status of the network connection. Open a command prompt window, ping the gateway to see if it is connected, execute the following command: ping 192.168.1.1 If you see four lines of neat text, there are "time<=" or "time<=" The words indicate that the computer is connected to the router; if it is time out, it means nowhere. The computer does not get an IP address? Usually there is a yellow exclamation mark in the lower right corner. This situation is usually encountered in the enterprise network, because the enterprise network will pass through the switch device from the computer to the core router, and the intermediate line will have problems. [Check if the router dials the number] It is determined that the router can be pinged. You can log in to the router at this time. Open a browser and enter the gateway address in the address bar, such as 192.168.1.1, to enter the router management interface. The following is an example of a tp-link router. Open the running state, find the WAN port status section on the right. If the IP address is not 0.0.0.0, the dialing is successful. When you see the dial-up success, get the IP address, all (note all) devices can't get on the network, then call the broadband provider directly, this is basically caused by the arrears or ISP side failure; if only Some computers can't be on, it has nothing to do with the ISP, check the computer problem (this is more complicated, learn a lot). If you don't get the IP address information, it means the dialing failed. We have checked the line before, so please call the broadband provider (this time there will be an exclamation mark in the lower right corner of the computer, or an exclamation mark on the network connection). If you want to get more reasons for not being able to dial, you can plug the router's WAN port directly into the computer, jump off the router, and use only the computer “Broadband Connection” to dial directly. The computer will give you detailed instructions. [Other notes] Do not reset the light cat. If you must do this, use the super account to log in to the light cat (usually only the normal user account), record all settings and reset, otherwise you will only find the ISP once reset. Don't reset the router easily, it's not necessary (protected by another article in Baoyun). This article comes from [System Home] www.xp85.com