Summary: Congestion Control for High Bandwidth­Delay Product
Networks
Dina Katabi  Mark Handley Charlie Rohrs y
MIT­LCS ICSI Tellabs
dk@mit.edu mjh@icsi.berkeley.edu crhors@mit.edu
ABSTRACT
Theory and experiments show that as the per­flow product of band­
width and latency increases, TCP becomes inefficient and prone to
instability, regardless of the queuing scheme. This failing becomes
increasingly important as the Internet evolves to incorporate very
high­bandwidth optical links and more large­delay satellite links.
To address this problem, we develop a novel approach to Inter­
net congestion control that outperforms TCP in conventional en­
vironments, and remains efficient, fair, scalable, and stable as the
bandwidth­delay product increases. This new eXplicit Control Pro­
tocol, XCP, generalizes the Explicit Congestion Notification pro­
posal (ECN). In addition, XCP introduces the new concept of de­
coupling utilization control from fairness control. This allows a
more flexible and analytically tractable protocol design and opens
new avenues for service differentiation.

Source: Akella, Aditya - Department of Computer Sciences, University of Wisconsin at Madison

Collections: Computer Technologies and Information Sciences