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QoS Monitoring and Topology Discovery with CMToolset QoS&Topology

Overview

CM Toolset QoS&Topology toolkit is a further extension of the distributed QoS monitoring architecture initially developed within the AQUILA project www.ist-aquila.org. and extended in INTERMON project.
Distributed Measurement Agents, which performs QoS measurement and topology monitoring scenarios

End-to-end flow generators for single and aggregated flows based on distributed agents.
Generation of synthetic traffic emulating typical end-to-end applications (e.g. VoIP, streaming audio, streaming video, WEB access, etc.).
Active network probing agents for obtaining QoS measurements, e.g. performance metrics such as packet delay, throughput or packet loss as defined by IETF IPPM WG for characterization of reachability / connectivity as well as performance metrics of particular paths and links in the access and core networks.
Collection of measurement information of different types (end-to-end performance, path metrics, network traffic, etc.) in a QoS measurement data base.
Provision of online access to measurement data base for network operation and QoS planning.
Support of topology monitoring scenarios using traceroute function.
Maintenance of traceroute topology data base including topology monitoring scenario description, traceroute call outputs and RTT measurements done in each traceroute call of the scenario.
Network tomography based on inference of QoS parameter of a “hidden” flow, which cannot be directly measured, from the QoS parameters of directly measured flows.
Visual presentation of QoS dependency on topology,
GPS clock synchronization for exact delay measurement.

The distributed measurement system CMToolSet mainly consists of a measurement server (or measurement management station) and several measurement client stations.
Mysql Cmbase consisting of QoS and traceroute topology data base. Apache Web-Server with PHP/Perl-Support, AUTH module for MySQL Database Standard apache server, provides the database access for users.
JAVA and WWW GUI for visualisation of QoS and traceroute topology data
CM-Caller with functions for QoS and topology monitoring using traceroute
Client with Internet browser, which is responsible for the management of the test scenarios.

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