Section: Software

Experimental platforms

Participant : Laurent Toutain.

We have implemented the Saturne platform, issued for GET funded projects. This platform performs precise one-way delay (OWD) and packet loss rate measurement between two points in IPv4/IPv6 networks. Measurements are performed with a global time reference basis, implemented within GPS synchronization systems installed at each measurement point. The architecture is composed of independent functional modules (Emission, Capture and Data Management) that interact to perform the measurement process. The Saturne architecture has been used in a variety of scenarios including, but not limited to, the evaluation of IP filtering functionalities in a non-specialized router and the validation of diffserv policies in a high-speed network (VTHD Network). In the latter case, it was verified that the results computed by light-weight Saturne are equivalent to those obtained with complex passive tools. We also took advantage of IPv6 capabilities by introducing an extension header for metrology. The proposed method allows to embed metrology information in real IPv6 flow packets.

On VTHD Network we have also deployed the AGAVE platform. We defined a monitor link (extension of OSPF's virtual link) to obtain, in real time VTHD network topology. This topology is used to set up MPLS LSP (label-switched paths).

Saturne and AGAVE are now part of the Network of Excellence EuroNGI (see Section  8.2 ).