TCPRand: Randomizing TCP Payload Size for TCP Fairness in Data Center Networks

Soojeon Lee, Myungjin Lee, Dongman Lee, Hyungsoo Jung, Byoung-Sun Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution


As many-to-one traffic patterns prevail in data center networks, TCP flows often suffer from severe unfairness in sharing bottleneck bandwidth, which is known as the TCP outcast problem. The cause of the TCP outcast problem is the bursty packet losses by a drop-tail queue that triggers TCP timeouts and leads to decreasing the congestion window. This paper proposes TCPRand, a transport layer solution to TCP outcast. The main idea of TCPRand is the randomization of TCP payload size, which breaks synchronized packet arrivals between flows from different input ports. We investigate how TCPRand reduces consecutive packet drops and demonstrate various benefits of TCPRand with extensive experiments and
ns-3 simulation. Our evaluation results show that TCPRand guarantees the superior enhancement of TCP fairness with negligible overheads in all of our test cases.
Original languageEnglish
Title of host publicationProceedings of IEEE Infocom
Place of PublicationKowloon, Hong Kong
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages9
ISBN (Electronic)978-1-4799-8381-0
Publication statusPublished - 24 Aug 2015
Event2015 IEEE Conference on Computer Communications - Kowloon, Hong Kong
Duration: 26 Apr 20151 May 2015


Conference2015 IEEE Conference on Computer Communications
Abbreviated titleINFOCOM 2015
CountryHong Kong
Internet address


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