By Topic

Adaptive Routing in Data Center Bridges

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Minkenberg, C. ; IBM Res., Zurich Res. Lab., Ruschlikon, Switzerland ; Gusat, M. ; Rodriguez, G.

In an effort to drive down the cost of ownership of interconnection networks for data centers and high-performance computing systems, technologies enabling consolidation of existing networking infrastructure, which often comprises multiple, incompatible networks operating in parallel, are feverishly being developed. Such consolidation carries the promises of lower complexity, less maintenance overhead, and higher efficiency, which should translate into lower power consumption. 10-gigabit Ethernet is one of the contending technologies to fulfill the role of universal data-center interconnect. One of the key features missing from conventional Ethernet is congestion management; this void is being filled by the standardization work of the IEEE 802.1Qau working group. Here, we build on the congestion management scheme defined in 802.1Qau to exploit a crucial property of many data-center networks, namely, multi-pathing, i.e., the presence of multiple alternative paths between any pair of end nodes. We adopt a two-tier approach: in response to congestion detection, an attempt is made to reroute "hot'' flows (i.e., those detected as contributing to congestion) onto an alternative, uncongested path; only when no uncongested alternative exists are transmission rates of hot flows reduced at the sources. We demonstrate how this can lead to significant performance improvements by taking full advantage of path diversity. Moreover, we highlight the scheme's practical usefulness by showing how it improves the performance of parallel benchmark programs on a realistic network.

Published in:

High Performance Interconnects, 2009. HOTI 2009. 17th IEEE Symposium on

Date of Conference:

25-27 Aug. 2009