Sciweavers

Share
SIGCOMM
2010
ACM

Greening backbone networks: reducing energy consumption by shutting off cables in bundled links

8 years 7 months ago
Greening backbone networks: reducing energy consumption by shutting off cables in bundled links
In backbone networks, the line cards that drive the links between neighboring routers consume a large amount of energy. Since these networks are typically overprovisioned, selectively shutting down links during periods of low demand seems like a good way to reduce energy consumption. However, removing entire links from the topology often reduces capacity and connectivity too much, and leads to transient disruptions in the routing protocol. In this paper, we exploit the fact that many links in core networks are actually "bundles" of multiple physical cables and line cards that can be shut down independently. Since identifying the optimal set of cables to shut down is an NP-complete problem, we propose several heuristics based on linear optimization techniques. We evaluate our heuristics on topology and traffic data from the Abilene backbone as well as on two synthetic topologies. The energy savings are significant, our simplest heuristic reduces energy consumption by 79% on A...
Will Fisher, Martin Suchara, Jennifer Rexford
Added 06 Dec 2010
Updated 06 Dec 2010
Type Conference
Year 2010
Where SIGCOMM
Authors Will Fisher, Martin Suchara, Jennifer Rexford
Comments (0)
books