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NANOG Meeting Presentation Abstract

An Internet-Wide Analysis of Traffic Policing
Meeting: NANOG69
Date / Time: 2017-02-06 2:00pm - 2:30pm
This item is webcast
Room: Independence Ballroom A (5B Level)
Presenters: Speakers:

Tobias Flach, Google

Tobias is a software engineer at Google primarily working on internet and datacenter telemetry. Prior to joining Google, Tobias pursued his Ph.D. degree at the University of Southern California under the supervision of Professors Ramesh Govindan and Ethan Katz-Bassett. His thesis focused on "Detecting and mitigating root causes for slow Web transfers" which includes a variety of internet measurement studies and proposals to improve network performance.
Abstract: Abstract: Large flows like videos consume significant bandwidth. Some ISPs actively manage these high volume flows with techniques like policing, which enforces a flow rate by dropping excess traffic. While the existence of policing is well known, our contribution is an Internet-wide study quantifying its prevalence and impact on video quality metrics. We developed a heuristic to identify policing from server-side traces and built a pipeline to deploy it at scale on traces from a large online content provider, collected from hundreds of servers worldwide. Using a dataset of 270 billion packets served to 28,400 client ASes, we find that, depending on region, up to 7% of loss transfers are policed. Loss rates are on average six times higher when a trace is policed, and it impacts video playback quality. We show that alternatives to policing, like pacing and shaping, can achieve traffic management goals while avoiding the deleterious effects of policing.

Notes:
We originally presented the research results at SIGCOMM 2016. The plan for NANOG is to extend the talk to include recent efforts at Google to better deal with negative side effects of policing.
Files: pdfAn Internet-Wide Analysis of Traffic Policing(PDF)
youtubeAn Internet-Wide Analysis of Traffic Policing
Sponsors: None.

Back to NANOG69 agenda.

NANOG69 Abstracts

  • Security Track
    Speakers:
    Jesse Sowell.
    Krassimir Tzvetanov, Fastly; Allan Friedman.
    Tim April.
    Paul Ebersman, Comcast; Christian Dawson, i2Coalition; Ron Winward, Radware;
  • Security Track
    Speakers:
    Jesse Sowell.
    Krassimir Tzvetanov, Fastly; Allan Friedman.
    Tim April.
    Paul Ebersman, Comcast; Christian Dawson, i2Coalition; Ron Winward, Radware;
  • Security Track
    Speakers:
    Jesse Sowell.
    Krassimir Tzvetanov, Fastly; Allan Friedman.
    Tim April.
    Paul Ebersman, Comcast; Christian Dawson, i2Coalition; Ron Winward, Radware;
  • Security Track
    Speakers:
    Jesse Sowell.
    Krassimir Tzvetanov, Fastly; Allan Friedman.
    Tim April.
    Paul Ebersman, Comcast; Christian Dawson, i2Coalition; Ron Winward, Radware;
  • Security Track
    Speakers:
    Jesse Sowell.
    Krassimir Tzvetanov, Fastly; Allan Friedman.
    Tim April.
    Paul Ebersman, Comcast; Christian Dawson, i2Coalition; Ron Winward, Radware;
  • Security Track
    Speakers:
    Jesse Sowell.
    Krassimir Tzvetanov, Fastly; Allan Friedman.
    Tim April.
    Paul Ebersman, Comcast; Christian Dawson, i2Coalition; Ron Winward, Radware;
  • Security Track
    Speakers:
    Jesse Sowell.
    Krassimir Tzvetanov, Fastly; Allan Friedman.
    Tim April.
    Paul Ebersman, Comcast; Christian Dawson, i2Coalition; Ron Winward, Radware;
  • Are We There Yet?
    Speakers:
    Yossi Gilad, Boston University and MIT; Avichai Cohen.
    Amir Herzberg.
    Michael Schapira.
    Haya Shulman.
  • Are We There Yet?
    Speakers:
    Yossi Gilad, Boston University and MIT; Avichai Cohen.
    Amir Herzberg.
    Michael Schapira.
    Haya Shulman.
  • Are We There Yet?
    Speakers:
    Yossi Gilad, Boston University and MIT; Avichai Cohen.
    Amir Herzberg.
    Michael Schapira.
    Haya Shulman.
  • Are We There Yet?
    Speakers:
    Yossi Gilad, Boston University and MIT; Avichai Cohen.
    Amir Herzberg.
    Michael Schapira.
    Haya Shulman.
  • Are We There Yet?
    Speakers:
    Yossi Gilad, Boston University and MIT; Avichai Cohen.
    Amir Herzberg.
    Michael Schapira.
    Haya Shulman.
  • Why Go?
    Speakers:
    James BoswellCharter Communications; .

 

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