BSDCan2015 - ZI
BSDCan 2015
The Technical BSD Conference
| Speakers | |
|---|---|
|
Nigel Williams |
| Schedule | |
|---|---|
| Day | Talks #2 - 13 June - 2015-06-13 |
| Room | DMS 1160 |
| Start time | 13:30 |
| Duration | 01:00 |
| Info | |
| ID | 554 |
| Event type | Lecture |
| Track | Hacking |
| Language used for presentation | English |
Multipath TCP for FreeBSD
An introduction to the protocol and our implementation for FreeBSD.
Multipath TCP (MPTCP) allows multi-homed hosts to make use of multiple addresses over a single TCP connection. This talk will cover the software architecture of a FreeBSD implementation of MPTCP, as well as presenting some case studies and performance results.
Multipath TCP (MPTCP) was designed as an extension to TCP, allowing a multi-homed host to utilise multiple network interfaces when transferring data. MPTCP is in the process of being standardised by the IETF as RFC 6824 (http://tools.ietf.org/html/rfc6824).
Supported by funding from Cisco Systems, the Centre for Advanced Internet Architectures (http://caia.swin.edu.au/newtcp/mptcp) released several patches against FreeBSD-10 (from March 2013) to add rudimentary MPTCP capabilities and code paths. More recently, the FreeBSD Foundation (http://www.FreeBSDFoundation.org/) provided funding to continue development of the MPTCP stack, building on the existing work. The stack has since then been re-designed and improved beyond the early experimental versions.
In this talk I will provide an overview of the Multipath TCP (MPTCP) protocol before discussing the software design, features and performance of our FreeBSD MPTCP implementation. I will also present some basic performance testing, case studies and usage examples (showing how MPTCP reacts to different paths coming and going while connections stay active).