Existe-t-il une carte du coeur de réseau français?
Each operator has its own links and its own topology, there is no global map.
Free publishes his physical network map, but without any indication of the speed of links :
D'après ce que j'ai établi, les NRO de chaque département sont câblés dans une topologie en anneau et en étoile renvoyant normalement au nœud central. Combien de fibres sont utilisées pour relier le NRO les unes aux autres et quelle est la vitesse / Interdiction.
Basically, yes.
It is difficult to establish the exact number of fibers between NROs, it depends of the criticality and the importance of the NRO...
in France, there are only two providers who deploy a physical backbone between all or the majority of NROs : Orange and SFR.
Bouygues Telecom, Free, KOSC and other providers who make "degroupage" are renting fibers to them in the majority of the cases
For the speed, all the big providers are pushing the stuff with n*100G in their backbone, the distribution is mainly with n*10G but evolves to 100G or n*100G too.
There is no NRO uplinked in N*1G anymore, iirc...
Technologie Gpon / Le futur: XGS-PON et NG-PON2