[talks] Fwd: [ens] talk about blackhole identification by Italo Cunha, Nov 11 11am, CS 302

Yaping Zhu yapingz at CS.Princeton.EDU
Mon Nov 9 22:00:24 EST 2009

Begin forwarded message:

> From: Yaping Zhu <yapingz at CS.Princeton.EDU>
> Date: October 7, 2009 6:55:55 PM PDT
> To: ens at lists.cs.princeton.edu
> Subject: [ens] talk about blackhole identification by Italo Cunha,  
> Nov 11 11am, CS 302
> hi all,
> Italo Cunha from UPMC Paris Universitas is visiting Princeton on Nov  
> 11. He will be giving a talk at 11am in CS 302 (title and abstract  
> below). please let me know if you'd like to meet with him in person.
> thanks,
> Yaping
> Title: Measurement Methods for Fast and Accurate Blackhole
> Identification with Binary Tomography
> Abstract: Binary tomography--the process of identifying faulty network
> links through coordinated end-to-end probes--is a promising method for
> detecting failures that the network does not automatically mask (e.g.,
> network "blackholes"). Because tomography is sensitive to the  
> quality of
> the input, however, naive end-to-end measurements can introduce
> inaccuracies. This paper develops two methods for generating inputs to
> binary tomography algorithms that improve their inference speed and
> accuracy. Failure confirmation is a per-path probing technique to
> distinguish packet losses caused by congestion from persistent link or
> node failures. Aggregation strategies combine path measurements from
> unsynchronized monitors into a set of consistent observations. When  
> used
> in conjunction with existing binary tomography algorithms, our methods
> identify all failures that are longer than two measurement cycles,  
> while
> inducing relatively few false alarms. In two wide-area networks, our
> techniques decrease the number of alarms by as much as two orders of
> magnitude. Compared to the state of the art in binary tomography, our
> techniques increase the identification rate and avoid hundreds of  
> false
> alarms.
> Bio: Ítalo Cunha received the B.Sc. degree in computer science and the
> M.Sc. degree in computer science from Universidade Federal de Minas
> Gerais, Brazil, in 2004 and 2007, respectively. He is currently a  
> second
> year Ph.D. candidate in UPMC Paris Universitas, doing his research  
> with
> Thomson, Paris, France. His research interests are in network
> measurement, troubleshooting, and management.
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