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DTSTART:20131027T030000
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UID:calendar.6788.field_data.0@oba.diag.uniroma1.it
DTSTAMP:20260407T201902Z
CREATED:20140114T102314Z
DESCRIPTION:The Internet presents compelling reach\, cost and capacity prop
 erties that drive more and more forms of communication to use it as their 
 network of choice. These properties stem from a few core design principles
  underlying the Internet\, such as best effort packet switching and routin
 g\, and end-to-end reliability\, congestion control and addressing: in ess
 ence\, keep it simple in the middle and smart at the edge.New applications
  bring new demands that clash with the core principles: high performance r
 eliability for large file transfers\; low latency interactivity for VoIP c
 alls\; point-to-multipoint reliable transport and delivery for live TV\; a
 nd intrusion resiliency required by clouds\, SCADA\, and other critical in
 frastructure systems.This talk describes the development of an overlay net
 work paradigm addressing the new demands. We present the overlay architect
 ure and associated protocols that were invented along the way\, moving mor
 e of the intelligence to the middle of the network. The architecture is im
 plemented by a flexible\, software-based overlay router that is augmented 
 with protocols tailored to new demands\, while using the Internet as is. W
 e discuss a reliable protocol that dramatically reduces average latency\, 
 a second protocol tailored to VoIP\, and a third protocol and system tailo
 red to global transport of live TV. Finally\, we present new directions ba
 sed on the overlay paradigm for intrusion resilient messaging required by 
 emerging critical distributed infrastructure.Bio:Yair Amir is a Professor 
 of Computer Science and director of the Distributed Systems and Networks l
 ab at Johns Hopkins University\, where his goal is to invent high performa
 nce\, survivable and secure distributed systems that make a difference.  D
 r. Amir holds a B.Sc. and M.Sc. from the Technion\, Israel Institute of Te
 chnology\, and a Ph.D from the Hebrew University of Jerusalem\, Israel. He
  served on various technical program committees and as an Associate Editor
  for the IEEE Transactions on Dependable and Secure Computing. He is a cre
 ator of the Spread group communication toolkit (www.spread.org)\, used in 
 thousands of installations around the world in commercial\, academic and g
 overnment settings. He led Secure Spread\, developing the first robust key
  agreement protocols\, as well as the Spines overlay network platform (www
 .spines.org) and the SMesh wireless mesh network (www.smesh.org)\, the fir
 st seamless 802.11 mesh with fast\, lossless handoff. More recently\, he l
 ed the development of the LTN cloud (www.ltnglobal.com)\, offering a globa
 l transport service for broadcast-quality live TV. That service was adopte
 d by major broadcasters like Turner\, CNN\, CNBC\, Fox\, ABC\, NBC\, PBS\,
  CBS\, Bloomberg and others.
DTSTART;TZID=Europe/Paris:20140122T120000
DTEND;TZID=Europe/Paris:20140122T120000
LAST-MODIFIED:20140121T115356Z
LOCATION:Aula A4
SUMMARY:Overlay Networks on a Global Scale: Performance\, Quality of Servic
 e\, and Ultimate Resiliency - Prof. Yair Amir (Johns Hopkins University)
URL;TYPE=URI:http://oba.diag.uniroma1.it/node/6788
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