|  | 8.7 | TCP/IP Suite: Utilities
| 8.7.8 | How and when to use PING to test, validate, and troubleshoot IP connectivity

Packet Interface Groper (PING) is a basic TCP/IP troubleshooting tool. PING is usually the first step when troubleshooting the network to verify if a specific machine is active. Using ICMP, PING verifies connections between two servers by sending echo packets to remote servers and listening for replies. Variations on the ping command are shown in Figures - .