Application Transport Network Link Physical Cooperations Aalto University LIG, Grenoble MIT Telecom SudParis ISAE Cooperations Aalto University LIG, Grenoble.

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Presentation transcript:

Application Transport Network Link Physical Cooperations Aalto University LIG, Grenoble MIT Telecom SudParis ISAE Cooperations Aalto University LIG, Grenoble MIT Telecom SudParis ISAE Team 5 permanent people 6 PhD students Team 5 permanent people 6 PhD students Contracts ANR jeune chercheur CIFREs: Orange, TMG Intel Contracts ANR jeune chercheur CIFREs: Orange, TMG Intel Administrative duties M1 IFI international M2 IFI Ubinet Eletronic Department EPU 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 networking  Cloud networking  Impact of virtualization layer (Vmware, Xen) on network performance  Delineating impact of CPU sharing, virtual switch, NIC virtualization, VM scheduling

Example of results  A bug in … Linux kernel of TCP at high speed  lack of fairness  Finding the root was … complex

Focus on some topics: video over mobile network  Video 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 joint effort with Coati

Realistic data center topology Fully controlled testbed SDN enabled: new network paradigm