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NANOG Meeting Presentation Abstract

Network Support for TCP Fast Open
Meeting: NANOG67
Date / Time: 2016-06-13 1:30pm - 2:00pm
This item is webcast
Room: Imperial Ballroom (B2 Level)
Presenters: Speakers:

Christoph Paasch, Apple

Christoph Paasch is a software engineer at Apple, working in the networking team. Prior to joining Apple, he obtained his PhD, titled "Improving Multipath TCP", at the UCLouvain, under the supervision of Prof. Olivier Bonaventure. His work focused on improving Multipath TCP and its Linux Kernel implementation in real world scenarios. He is passionate on all aspect of transport layer protocols and how they can be modified to improve the user-experience over the Internet.
Abstract: Latency is the dominant factor for the user-experience of the Internet users.
TCP, the most widely used transport protocol involves a handshake before any
data can be sent over the connection. As round-trip-times between client and server
are often in the order of hundreds of milliseconds, TCP's handshake introduces
a significant delay until data can be sent.

TCP Fast Open (TFO) is a novel extension to TCP that allows to shortcut TCP's
handshake, by sending data on the SYN-segment and allowing the server to reply
before the handshake finished. The benefits are a much better user-experience
as the data reaches the client much faster. We at Apple have deployed TCP Fast
Open for a particular service, sending 100000 requests per second at peak times.
While TFO provides a huge benefit significantly improving the user-experience, we
also observed some major issues. Many middleboxes and firewalls in the operator
networks interfere with TCP Fast Open. In some cases, we have observed that
middleboxes are blacklisting clients that use TFO.

In this talk we give a detailed explanation of the behavior and benefits of
TCP Fast Open. We continue by providing examples of how firewalls interfere with
TFO according to our experience with its deployment. Our talk finishes with a
call to network operators and firewall vendors to take TFO into account in
the configuration of their equipment, so as TFO can operate efficiently and provide
the latency benefit to the end-users.
Files: pdfNetwork Support for TCP Fast Open(PDF)
youtubeNetwork Support for TCP Fast Open
Sponsors: None.

Back to NANOG67 agenda.

NANOG67 Abstracts

  • Conference Opening
    Moderators:
    Daniel Golding, NANOG Board, Google; Speakers:
    Peter JacobyRCN; .
    L Sean Kennedy, XO Communications; Don MacNeilJay Borkenhagen.
  • Conference Opening
    Moderators:
    Daniel Golding, NANOG Board, Google; Speakers:
    Peter JacobyRCN; .
    L Sean Kennedy, XO Communications; Don MacNeilJay Borkenhagen.
  • Conference Opening
    Moderators:
    Daniel Golding, NANOG Board, Google; Speakers:
    Peter JacobyRCN; .
    L Sean Kennedy, XO Communications; Don MacNeilJay Borkenhagen.
  • Conference Opening
    Moderators:
    Daniel Golding, NANOG Board, Google; Speakers:
    Peter JacobyRCN; .
    L Sean Kennedy, XO Communications; Don MacNeilJay Borkenhagen.
  • Conference Opening
    Moderators:
    Daniel Golding, NANOG Board, Google; Speakers:
    Peter JacobyRCN; .
    L Sean Kennedy, XO Communications; Don MacNeilJay Borkenhagen.
  • DNS Track
    Speakers:
    edward lewisICANN; .
    Duane Wessels, Verisign; Kazunori FujiwaraJPRS; .
    Casey Deccio, Verisign Labs; Yacin Nadji.
  • DNS Track
    Speakers:
    edward lewisICANN; .
    Duane Wessels, Verisign; Kazunori FujiwaraJPRS; .
    Casey Deccio, Verisign Labs; Yacin Nadji.
  • DNS Track
    Speakers:
    edward lewisICANN; .
    Duane Wessels, Verisign; Kazunori FujiwaraJPRS; .
    Casey Deccio, Verisign Labs; Yacin Nadji.
  • DNS Track
    Speakers:
    edward lewisICANN; .
    Duane Wessels, Verisign; Kazunori FujiwaraJPRS; .
    Casey Deccio, Verisign Labs; Yacin Nadji.
  • DNS Track
    Speakers:
    edward lewisICANN; .
    Duane Wessels, Verisign; Kazunori FujiwaraJPRS; .
    Casey Deccio, Verisign Labs; Yacin Nadji.
  • Security Track
    Speakers:
    John Kristoff, DePaul University; Christoph Dietzel.
    Ryan Haley.
    Jelena Mirkovic.
  • Security Track
    Speakers:
    John Kristoff, DePaul University; Christoph Dietzel.
    Ryan Haley.
    Jelena Mirkovic.
  • Security Track
    Speakers:
    John Kristoff, DePaul University; Christoph Dietzel.
    Ryan Haley.
    Jelena Mirkovic.
  • Security Track
    Speakers:
    John Kristoff, DePaul University; Christoph Dietzel.
    Ryan Haley.
    Jelena Mirkovic.

 
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