Abstract
Networks have become multipath: mobile devices have multiple radio interfaces, datacenters have redundant paths and multihoming is the norm for big server farms. Meanwhile, TCP is still only single-path.
Is it possible to extend TCP to enable it to support multiple paths for current applications on today’s Intenet? The answer is positive. We carefully review the constraints—partly due to various types of middleboxes—that influenced the design of Multipath TCP and show how we handled them to achieve its deployability goals.
We report our experience in implementing MultipathTCP in the Linux kernel and we evaluate its performance. Our measurements focus on the algorithms needed to efficiently use paths with different characteristics, notably send and receive buffer tuning and segment reordering. We also compare the performance of our implementation with regular TCP on web servers. Finally, we discuss the lessons learned from designing MPTCP.
Is it possible to extend TCP to enable it to support multiple paths for current applications on today’s Intenet? The answer is positive. We carefully review the constraints—partly due to various types of middleboxes—that influenced the design of Multipath TCP and show how we handled them to achieve its deployability goals.
We report our experience in implementing MultipathTCP in the Linux kernel and we evaluate its performance. Our measurements focus on the algorithms needed to efficiently use paths with different characteristics, notably send and receive buffer tuning and segment reordering. We also compare the performance of our implementation with regular TCP on web servers. Finally, we discuss the lessons learned from designing MPTCP.
Original language | English |
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Title of host publication | 9th USENIX Symposium on Networked Systems Design and Implementation (NSDI 12) |
Place of Publication | San Jose, CA |
Publisher | USENIX Association |
Pages | 399-412 |
Number of pages | 14 |
ISBN (Print) | 978-931971-92-8 |
Publication status | Published - 27 Apr 2012 |
Event | 9th USENIX Symposium on Networked Systems Design and Implementation - San Jose, United States Duration: 25 Apr 2012 → 27 Apr 2012 Conference number: 9 https://www.usenix.org/conference/nsdi12 |
Symposium
Symposium | 9th USENIX Symposium on Networked Systems Design and Implementation |
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Abbreviated title | NSDI 2012 |
Country/Territory | United States |
City | San Jose |
Period | 25/04/12 → 27/04/12 |
Internet address |