[NRG] Notification: Is Multipath Routing Beneficial? (Deep Medhi) @ Fri Apr 1, 2016 2pm - 3pm (NRG at BU)

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Title: Is Multipath Routing Beneficial? (Deep Medhi)
It's often believed that multipath routing is always beneficial. Taking a  
traffic engineering perspective, we consider commonly used goals such as  
congestion minimization, minimum average delay, and minimum cost routing.  
Using a well-known result from linear programming, we show that the number  
of paths taken by all demands at optimality is limited by the total number  
of demands and links in a network. When all node pairs (demands) in a  
network have traffic, multipath routing essentially becomes single-path  
routing, especially as the network becomes large with the number of links  
are in the order of nodes. Under certain traffic and capacity conditions,  
single-path routing is found to be optimal. We will also present results on  
a number of traffic scenarios and load conditions using topologies used by  
ISPs and in data center networks. These observations are counter-intuitive  
due to the commonly held belief on the benefits of multipath routing.

Bio: Deep Medhi is Curators' Professor in the Department of Computer  
Science and Electrical Engineering at the University of Missouri- Kansas  
City, USA. He received B.Sc. in Mathematics from Cotton College, Gauhati  
University, India, M.Sc. in Mathematics from the University of Delhi,  
India, and his Ph.D. in Computer Sciences from the University of  
Wisconsin-Madison, USA. Prior to joining UMKC in 1989, he was a member of  
the technical staff at AT&T Bell Laboratories. He was an invited visiting  
professor at the Technical University of Denmark, a visiting research  
fellow at Lund Institute of Technology, Sweden, a research visitor at  
University of Campinas, Brazil under the Brazilian Science Mobility Program  
and served as a Fulbright Senior Specialist. He is the Editor-in-Chief of  
Springer's Journal of Network and Systems Management, and is on the  
editorial board of IEEE/ACM Transactions on Networking, IEEE Transactions  
on Network and Service Management, and IEEE Communications Surveys &  
Tutorials. He is co-author of the books, Routing, Flow, and Capacity Design  
in Communication and Computer Networks (2004) and Network Routing:  
Algorithms, Protocols, and Architectures (2007), both published by Morgan  
Kauffman/Elsevier.
When: Fri Apr 1, 2016 2pm - 3pm Eastern Time
Where: Hariri Seminar Room
Video call: https://plus.google.com/hangouts/_/bu.edu/is-multipath  
<https://plus.google.com/hangouts/_/bu.edu/is-multipath?hceid=NTYwam42bnQ1aGo0b2YzcnNyaWNoZnB0aW9AZ3JvdXAuY2FsZW5kYXIuZ29vZ2xlLmNvbQ.boelutqj7hkafqll7tust2dnjc>
Calendar: NRG at BU
Who:
     * Cody Doucette - creator

Event details:  
https://www.google.com/calendar/event?action=VIEW&eid=Ym9lbHV0cWo3aGthZnFsbDd0dXN0MmRuamMgNTYwam42bnQ1aGo0b2YzcnNyaWNoZnB0aW9AZw

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