Identify TCP/IP network faults using PING

Ping 127.0.0.1: 127.0.0.1 is the local cyclic address. If the address cannot be pinged, it indicates that the local machine's TCP/IP protocol is not working properly.

PING the IP address of the Local Machine by using IPCo
Nfig check the IP address of the Local Machine and Ping the IP address. General rules indicate that the network adapter (NIC or MODEM) works normally. Otherwise, the network adapter fails.

Ping the IP address of a computer in the same network segment: Ping the IP address of a computer in the same network segment. General rules indicate that the network line is faulty. If the network contains a router, in this case, the IP address of the router port in this segment should be pinged first. If there is a problem with this segment of the line, the general rule is to Ping the IP address of the port of the router in the CIDR Block of the target computer; in general, PING the IP address of the target machine.

⒋ Ping url: To detect a network with DNS service, you can Ping the Network Name of the machine if the IP address of the target computer is still unable to connect to the machine after you PING the IP address of the target computer in the previous step, for example, if you Ping www.sina.com.cn, the IP address pointed to by the website is displayed normally. This indicates that the local DNS settings are correct and the DNS server works properly. Otherwise, it may be one of the failures; you can also Ping the computer name to detect the failure of WINS resolution (WINS is a service that resolves the computer name to the IP address ).

After these four steps are completed, the fault points in the network are clearly defined, so that we can solve the problem correctly.