Avoiding Oscillations Due to Intelligent Route Control Systems

Abstract— Intelligent Route Control (IRC) systems are increasingly deployed in multihomed networks. IRC systems aim to optimize the cost and performance of outgoing traffic, based on measurement-driven dynamic path switching techniques. In this paper, we first show that IRC systems can introduce sustained traffic oscillations, causing significant performance degradation instead of improvement. This happens, first, when IRC systems do not take into account the self-load effect, i.e., when they ignore that the performance of a path can change after additional traffic is switched to that path. Second, oscillations can take place when different IRC systems get synchronized due to significant overlap of their measurement time windows. We then propose measurement methodologies and path switching algorithms that can effectively deal with the previous two issues. The proposed IRC techniques use available bandwidth estimation to avoid the self-load effect, and they introduce a random c...

• Type: Conference
• Year: 2006
• Where: INFOCOM
• Authors: Ruomei Gao, Constantinos Dovrolis, Ellen W. Zegura
• Keywords: Communications, Deterministic Irc Systems, INFOCOM 2006, IRC Systems, Path Switching Techniques