Can IP Routing Effectively
use Optical Bypass?
Admela Jukan
TU Braunschweig, Germany
Friday, March 12, 2pm
Location: BAB024 (Bahen Centre Basement)
Abstract:
Despite the steady and
significant increase in traffic, todays Internet topologies are stable,
reliable, and underutilized. This is mainly due to the proven ISP practice
called headroom, where the static IP links are significantly over-provisioned,
often up to 70 percent. While the practice of large headroom allows for
accommodation of unpredictable flows, and also keeps the network stable and
resilient against attacks and failures, it leads to high capital and
operational expenses of high-speed IP interfaces, as well as higher energy
consumption. At first glance, optical circuits can address all these problems,
as they can be dynamically deployed to bypass any congested or faulty IP links
and are the "greenest" of all networks; however, the price to pay is stability
of IP routing and network management, which is in fact the main reason why
ISPs continue to deploy the headroom practice. In this talk, I will discuss
why past approaches to deploy dynamic optical circuits have not been widely
adopted for IP routing, and present an idea wherein IP optical bypass links
between a pair of routers are established, while keeping the IP routing
stable. I will discuss an optimization-based approach to compute the optimal
set of optical circuits used to bypass large IP flows. But, can this be done
without the knowledge of the traffic matrix?
Bio:
Admela
Jukan is W3 Professor of Electrical and Computer Engineering at the Technical
University Carolo-Wilhelmina of Brunswick (Braunschweig) in Germany. Prior to
coming to Brunswick, she was research faculty at the Institut National de la
Recherche Scientifique (INRS), University of Illinois at Urbana Champaign (UIUC)
and Georgia Tech (GaTech). From 2002-2004, she served as Program Director in
Computer and Networks System Research at the National Science Foundation (NSF)
in Arlington, VA. She received the M.Sc. degree in Information Technologies and
Computer Science from the Polytechnic of Milan, Italy, and the Ph.D. degree (cum
laude) in Electrical and Computer Engineering from the Vienna University of
Technology (TU Wien) in Austria. Dr. Jukan has chaired and co-chaired several
international conferences, including IFIP ONDM, IEEE ICC and IEEE GLOBECOM. She
serves as Associate Technical Editor for IEEE Communications Surveys, IEEE
Communications Magazine and IEEE Network. She is a Senior Member of the IEEE.
Her research interests include optical networks, network control and management
and performance evaluation.
Host of Talk:
Jörg Liebeherr (jorg@comm.toronto.edu)