Internet Reliability, from Addresses to Outages

14 Jun

John Heidemann, Senior Project Leader, University of Southern California/Information Sciences Institute (USC/ISI); Research Professor in Computer Science, USC, USA

External Presentation (External Speaker)

The Internet is central to our lives, but we know astoundingly little about it.
How big is the Internet?  How reliable? How is it evolving over months?
How does it change over the course of a day?

Since 2006, we have been studying the public face of the Internet to answer these questions.  We take regular censuses, probing the entire IPv4 Internet address space.  For nearly two years we have been observing Internet reliability through active probing with Trinocular outage detection, showing that the Internet reflects natural disasters like Hurricane Sandy’s landfall in 2012.  Additional analysis of this data has shown that the Internet “sleeps”: we can see that some areas have more active IP addresses during the day.

This talk will explore the science behind these ideas and trace their path from research to deployment.

About John Heidemann

John Heidemann received his B.S. from University of Nebraska-Lincoln (1989) and his M.S. and Ph.D. from the University of California, Los Angeles (1991 and 1995). He is a senior project leader at the University of Southern California/Information Sciences Institute (USC/ISI) and a research professor at USC in Computer Science.  At ISI he leads the ANT (Analysis of Network Traffic) Lab, studying how large Internet topology and traffic data inform network reliability, security, protocols, and critical services.  He is a senior member of ACM and fellow of IEEE.

Personal Site.

This event will be conducted in English


  • Location: Sala 1.1/2 IMDEA Networks Institute, Avda. del Mar Mediterráneo 22, 28918 Leganés – Madrid

  • Organization: NETCOM Research Group (Telematics Engineering Department, UC3M); IMDEA Networks Institute
  • Time: 13:00 pm
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