Home // International Journal On Advances in Systems and Measurements, volume 1, number 1, 2008 // View article

Monitoring overlay path bandwidth using an inline measurement technique

Authors:
Cao Le Thanh Man
Go Hasegawa
Masayuki Murata

Keywords: End-to-end measurement, available bandwidth, inline measurement, overlay network, active measurement

Abstract:
We introduce ImSystem, a distributed system that infers real-time information concerning the available bandwidth of all paths in the overlay networks. The key concept in ImSystem is that, when the overlay hosts transmit overlay traffic, the overlay hosts deploy the traffic to perform inline network measurements. Inline network measurement is a method for measuring available bandwidth using only the packets transmitted in a data flow, instead of injecting probe traffic onto the network. ImSystem performs supplemental active measurement only when overlay traffic is insufficient for inline measurement, and therefore injects very little probe traffic onto the network. We also enhance the system to ImSystemPlus and ImSystemLight, deploying IP network topology information. In ImSystemPlus, the conflicts of the supplemental active measurements are greatly reduced, and, in ImSystemLight, the number of exchange messages sent by the overlay nodes is reduced. The simulation results show that the proposed systems can monitor the bandwidth in real-time while using only a small amount of probe traffic if the overlay traffic is sufficient.

Pages: 50 to 60

Copyright: Copyright (c) to authors, 2008. Used with permission.

Publication date: February 24, 2009

Published in: journal

ISSN: 1942-261x