Your OneLab login is your PlanetLab Europe email and password. This gives you access to: PlanetLab Europe, NITOS, ETOMIC and SONoMA.

PlanetLab Central users
Your PlanetLab central login is your email and password.

Local TopHat users
This local TopHat login is your email and password.

Welcome to TopHat


The TopHat project, initiated by UPMC during the OneLab project, aims at developing platforms and tools to actively probe the Internet topology, and serve live and historic measurements to the community. Data is made available through this interface as well as an XMLRPC API.


TopHat relies on TDMI (TopHat Dedicated Measurement Infrastructure), which is currently deployed on more than 400 nodes on the PlanetLab testbed, and periodically makes snapshots of the overlay topology. It complements its own measurements with data originating from several interconnected platforms.


Latest news:

  • New website online


    TopHat new website is online.…