ICMP ping

Ping is a computer network administration utility used to test the reachability of a host on an Internet Protocol (IP) network and to measure the round-trip time for messages sent from the originating host to a destination computer.
Ping operates by sending Internet Control Message Protocol (ICMP - rfc 792) echo request packets to the target host and waiting for an ICMP response. In the process it measures the time from transmission to reception (round-trip time).

Within SAEAUT SNMP OPC Server™ , it is used two fold – to identify IP devices in network by configuring. (It functions only on devices that do not have disabled pinging), and for continual monitoring – cyclic measuring of round trip time of the unmanaged or also managed devices.