LinkMeUp. Issue No. 17. TCP Disadvantages and New Transport Layer Protocols

    The 17th edition of the Linkmeup podcast is dedicated to a deep-tech topic.
    Our guest is Dmitry Kachan , a graduate student at SibGUTI. Dmitry is currently developing application-level transport protocols.
    Therefore, today we are talking about the disadvantages of TCP, why now it can no longer fulfill its role as a guaranteed delivery protocol in some cases.
    You will find out what approaches are now available to solve this problem.

    Release News

    1. The government wants the data of Russians to be stored in our country ( link ).
    2. HP has made its online simulator available to the general public ( link ).
    3. MIT has developed a data center traffic management technology that significantly reduces delays and queues ( link ).
    4. Smooth transition to the guest theme. Big Data in the service of football ( link ).

    Download the podcast file .

    Under the cut you can find a list of some commercial solutions and protocols for the efficient transfer of information with guaranteed delivery, as well as Dmitry’s research itself.

    Dmitry article with application comparison

    List of experimental applications:
    1. Tixstream
    2. File Catalyst Direct
    3. Velosity
    4. Catapult
    5. Expedat

    Some of the solutions are based on TCP, some on UDP. As a result of the article, it is easy to notice with the naked eye a significant advantage in approaches based on UDP.

    In the analysis, research data were used , where it is shown that in only 75% of intercontinental connections the packet loss rate is below 1%, respectively, a network study with a packet loss of 1% percent, at least, has a place to be. As for the delay - 200 ms. Round Trip Time in optical networks corresponds to approximately a distance of 20,000 km. (this is without taking into account the delay in the intermediate devices) which means that such connections are also possible. (all this is described in the article).

    Later, studies were conducted on protocols for data transfer (before that, it was about end applications).

    Dmitry's article comparing protocols

    As the protocols were used:
    1. UDT (opensource)
    2. RBUDP (opensource)
    3. RWTP base of TIXStream
    4. MTP base of ExpeDat

    The resulting picture is the same: UDP has a significant predominance.

    AxxelBox Project

    A project implemented by Anhalt University, the German government (funding) and two German firms: Tixel GmbH and Axxeo GmbH.
    Some create firewalls, others create the RWTP protocol. The idea was to make the use of RWTP protocol for data transfer as transparent as possible.
    This project has been presented twice at CeBit 2013, and CeBit 2014.

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