Sla Measurements - HP Aruba JL253A Management And Configuration Manual

IP SLA measurement engine
This is an application running on the initiator. It processes response frames received from the IP SLA responder
and computes one-way delay, jitter and RTT based on the timestamps present in the packet.
This application aggregates this computed information across multiple probe samples and stores this for
consumption by an NMS via SNMP or via the device CLI.
It also supports asynchronous user configurable threshold breach notification to an NMS (via SNMP Traps).

SLA Measurements

The following metrics are measured as part of this IP SLA jitter functionality.
One way jitter
One way jitter is defined as the time difference between inter-packets transmit time and inter-packets arrival time
in a given direction. This is measured in both the Initiator to Responder direction (referred to as SD jitter) as well
as the Responder to initiator direction (referred to as DS jitter).
Ideally, the jitter in both directions should be 0. A positive value of jitter is bad for VOIP and higher values of jitter
will mean poor conversation quality. This is explained in the illustration below:
606 Aruba 2930F / 2930M Management and Configuration Guide
for ArubaOS-Switch 16.08