Network latency is the measure of the time it takes for data to travel between points on a network. The Ping tool is used to measure the 'round trip' of source to destination and back again, while the OWAMP tool can measure each direction independently. This video discusses ways to schedule regular tests using this tool via the perfSONAR toolkit configuration interface.
ping HOST owping HOST bwping -T ping -c RECV_HOST -s SEND_HOST bwping -T owamp -c RECV_HOST -s SEND_HOST