Flat (packet internet groper), the host of the network determine whether the program is ICMP (which is online by sending Internet Control Message Protocol) is used to echo request and waiting for a response to test . Also, servers, routers, workstations, is used to troubleshoot network connectivity between devices such as printers. You are, simply from the command prompt and type ping IP address, can run a ping to the host. Cases, 192.168.0.1 to access the IP address, type ping 192.168.0.1 host Please see example. Also, to check availability and enter the ping Microsoft Corporation, Web sites that can perform a ping.
If PING is back to when the host took to go through the reply, the IP has been successful and the time response from the display address and other information.

error when the ping response is not successful we can get the answer. Here are the main error message means?
TTL expired in transit agencies
The TTL value, IP determines the maximum amount of time you can live without reaching its destination on the network packet. To bind to a number of IP routers that effectively may be destroyed prior to passing the packets. This message, TTL is an indication that expired in transit. The number of hops required is longer than the TTL. Switch, ping is used to increase my TTL.
Destination host is not accessible
Ping the host you are trying to down, not running on the network. Routing to the destination host does not exist locally or remotely. , Change the local route table, and notifies the administrator of the router.
Request timeout
timeout for the ping command, was the reply from the host. Echo reply message, the network traffic, ARP packets filtering requests, it was error to fail to receive or router. The wait time, ping - w switch increases.
Host unknown
Host name or IP address, or network to resolve the host name of the destination does not exist. Check the DNS name and server availability.