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An early look at multipath TCP deployment in the wild


Olivier Mehani, Ralph Holz, Simone Ferlin and Roksana Boreli


Simula Research Laboratory


Multipath TCP has been standardised in 2013 at IETF. It promises to better use network resources of multi- homed devices to aggregate capacity or provide seamless failover capabilities. The uptake has however been rather slow. Some operating systems support MPTCP out of the box, but little is known about their deployment on the server side. We built a scanning infrastructure to search for MPTCP-capable hosts on the Internet. In this study, we used in on the top-1M Alexa servers to test the platform and gain insight about server support. We find that about 0.1% of Alexa unique domains and IP addresses currently support MPTCP. Their geographic distribution is quite different from that of clients reported in other studies, with the majority of domains being in China. We also find that very few IPs actually expose multihoming information, suggesting that these early deployments aim at providing stream reliability rather than capacity aggregation. Continuing this scanning campaign, we expect to see a sharp rise following Appleā€™s enabling MPTCP by default on their new devices.

BibTeX Entry

    author           = {Mehani, Olivier and Holz, Ralph and Ferlin, Simone and Boreli, Roksana},
    month            = sep,
    year             = {2015},
    keywords         = {mptcp, deployment, measurement, multipath, transport, scan},
    title            = {An Early Look at Multipath {TCP} Deployment in the Wild},
    booktitle        = {HotPlanet 2015, 6th International Workshop on Hot Topics in Planet-Scale Measurement, in Conjunction
                        with ACM MobiCom 2015},
    address          = {Paris, France}