QoS Test Software Suite
Thursday 11 June 2009
The QoS Test Software Suite was developed by the ICT Institute of the University of Applied Sciences Western Switzerland of Fribourg (EIA-FR) and allows network managers to evaluate in ‘real-time’ Quality of Service (QoS) informations of any selected traffic flow.
It is mainly based on the “IP performance Metric, IPPM” (RFC 2330) and on the “Benchmarking Methodology for Network Interconnect Devices” (RFC 2544).
The developpment of the QoS Test Software Suite covered the following topics:
selection and the utilization of open-source traffic generator to simulate any kind of enterprise traffic flows
specification of the QoS measurement and calculation methods in a ‘real-time’ way
development of network probes and a QoS Management station
integration of the results into a SNMP base management system
This software suite provides consistent and realistic information about network performance, taking into account the following constraints:
accuracy of the time synchronisation between the probes
accuracy of the calculated values in comparison to professional solutions
limit of the performance of probes running Linux as operating system and on the hardware and software limitation of such a solution
The resulting tool successfully provides QoS metrics (delay, jitter, packet loss, throughput) for any kind of flow (TCP, UDP or any Layer 2 or Layer 3 protocols). This allow network administrator to focus on any kind of traffic and troubleshoot or validate any network configuration.