[Nets-seminars] UCL Electronic engineering talk 18th May 2012

[Richard G. Clegg]

The first talk of term is this Friday, 18th May at 16:00 in GS/302.  Our 
speaker is Professor Steve Uhlig from Queen Mary.  This is an advance 
chance to hear work which will be presented at SIGCOMM.   I include the 
full talk schedule for this term below this abstract for people who want 
to mark them in their diaries.

Title: Anatomy of a Large European IXP

Abstract:
  The largest IXPs carry on a daily basis traffic volumes in the
petabyte range, similar to what some of the largest global
ISPs reportedly handle. This little-known fact is due to a
few hundreds of member ASes exchanging traffic with one
another over the IXP's infrastructure. This paper reports on
a first-of-its-kind and in-depth analysis of one of the largest
IXPs worldwide based on nine month worth of sFlow records
collected at that IXP in 2011.
A main finding of our study is that the number of actual
peering links at this single IXP exceeds the total number of
AS links of the peer-peer type in the entire Internet known
as of 2010! To explain such a surprisingly rich peering fabric,
we examine in detail this IXP's ecosystem and highlight
the diversity of networks that are members at this IXP and
connect there with other member ASes for reasons that are
similarly diverse, but can be partially inferred from their business
types and observed traffic patterns. In the process, we
investigate this IXP's traffic matrix and illustrate what its
temporal and structural properties can tell us about the member
ASes that generated the traffic in the first place. While
our results suggest that these large IXPs can be viewed as a
microcosm of the Internet ecosystem itself, they also argue
for a re-assessment of the mental picture that our community
has about this ecosystem.

  * 11th May -- Steve Uhlig (QMUL) --  "Anatomy of a Large European IXP"
  * 25th May -- Richard Clegg (UCL) -- ENVISION: Stable ISP Traffic
    Balancing in Space and Time
  * 8th June -- Raul Landa (UCL) -- ENVISION: The Large-scale Geography
    of Internet Round Trip Times
  * 15th June -- Georgios Smaragdakis (Deutsche Telekom Laboratories/ TU
    Berlin) -- Content-aware Traffic Engineering
  * 22nd June -- Nishanth Sastry (KCL) -- TBA

-- 
Richard G. Clegg,
Dept of Elec. Eng.,
University College London
http://www.richardclegg.org/

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