Ping ping is a very high frequency utility that determines if the local host can exchange (send and receive) datagram. According to the information returned, you can infer whether the TCP / IP parameter is set correctly and if it is running. It should be noted that the TCP / IP configuration is correct if the TCP / IP configuration is successful, and you must perform a large number of local hosts and remote hosting data reports to be sure that TCP / The correctness of IP. Follow the default settings, the ping command running on Windows sends 4 ICMP (Internet Control Packet Protocol) to return the request, each 32-byte data, if everything is normal, you should get 4 reply answers. Ping can display the time quantity between the sending feedback request to returns the return response in milliseconds. If the response is short, it means that the datagram does not have to pass too much router or network connection speed. Ping also displays the TTL (Time to Live existence time) value, you can calculate how many routers have passed through the TTL value: Source site TTL start value (ie, the number of two multipliers to returning TTL slightly larger ) - The TTL value is returned. For example, returning a TTL value of 119, then it is possible to estimate the TTL start value of 128, and the source location to the target location to pass 9 router network segments (128-119); if the TTL value is 246, The TTL start value is 256, and the source location is to the target location to pass 10 router network segments. Before starting the remote host connection or routing problem, you should first use the PING test computer to verify that its network interface is working correctly. To test your own machine, you can use any of the following commands (replace youipaddress with the actual 1P address of your computer): ping locatlhost prof 127.0.0.1 ping youripqaddress ping LAN Other IP - this command should leave your computer, after passing NIC and network cables reach other computers and return. Received a return response indicates that the NIC and the carrier in the local network operate correctly. But if you receive 0 feedback answers, then the subnet mask (when subnet split, the network part of the IP address and the host part) is incorrect or the network card configuration error or the cable system has problems. Ping Gateway IP - This command If the answer is correct, it indicates that the gateway router in the LAN is running and can make a response. PING Remote IP - If you receive 4 answers, the gateway is used to successfully use the gateway. For dial-up users, they represent the accessible Internet (but do not rule out the ISP DNS). Ping www.yahoo.com - Performs ping for this domain name, usually via the DNS server, if there is a failure here, the IP address configuration of the DNS server is incorrect or the DNS server is faulty (for dial-up users, some ISP has already No need to set up DNS servers). By the way: You can also use this command to implement the switching function of the domain name on the IP address. Below is the syntax of the ping command: ping [-t] [- a] [- n count] [- llength] [- f] [- i ttl] [- v TOS] [- r count] [- S Count] [[-j host-list] | [-k host-list) [- w timeout] destination-list ping command The parameters available are as follows:.-T. Guide Ping Continue to test the remote host until you press Ctrl C to interrupt the command. .-a. Make the PING command not to decompose the IP address into a Host host name, which is useful for solving DNS and HOSTS file issues. .-n count.
