Application

Transport

Network

Link

PhysicalCooperations• Aalto University• LIG, Grenoble• MIT• Telecom SudParis• ISAE

Team• 5 permanent

people• 6 PhD students

Contracts• ANR jeune

chercheur• CIFREs: Orange,

TMG• Intel

Administrative duties

• M1 IFI international

• M2 IFI Ubinet• Eletronic

Department EPU

Network coding

TCP in high BDP networks

Ad-hoc networks

Scheduling

P2P, traffic analysis, neutrality

Cognitive Radio, Continuous phase space-time coded

modulation

Focus on some topics : cloud networkingCloud networking

Impact of virtualization layer (Vmware, Xen) on network performance

Delineating impact of CPU sharing, virtual switch, NIC virtualization, VM scheduling

Example of resultsA bug in … Linux kernel of TCP at high speed

lack of fairness

Finding the root was … complex

Focus on some topics: video over mobile networkVideo dominates traffic in mobile (3G/LTE)

network

Stringent QoS

Question for ISP (Orange): budget resources so as to minimize cost while maintaining QoS

Problems (non exhaustive list) Video download is a complex function of

(smartphone, OS, Videocaster (YT, Dailymotion, )

Galaxy S2: mobiles imposes specific pattern to server! (energy consumption)

Minimizing Energy of Network In data center: networking 10 to 20% of the

total energy cost of data centers

ISP

Challenges addressed: How to practically implement green routing? Trade-off energy/QoS for users How to efficiently simulate/evaluate?

Ns-3 extensions SDN (Software Defined Network) testbed to be

deployed in 2014 - joint effort with Coati

Realistic data center topologyFully controlled testbedSDN enabled: new network paradigm