SLA Mon uses two types of tests to determine QoS benchmarks:
Real Time Protocol (RTP)
This test measures network performance — for example, jitter, delay, and loss — by injecting a short stream of UDP packets from source to destination (an SLA Mon agent).
New Trace Route (NTR)
This test is similar to traceroute but also includes DSCP values at each hop in the path from the source to the destination. The destination does not need to be an SLA Mon agent.