Impact of the Ethernet Capture Effect on Bandwidth Measurements

Authors:
Mats Björkman;Bob Melander
Affiliations:
-;-
Venue:
NETWORKING '00 Proceedings of the IFIP-TC6 / European Commission International Conference on Broadband Communications, High Performance Networking, and Performance of Communication Networks
Year:
2000

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Abstract

In this paper we present impacts of the Ethernet capture effect on bandwidth measurements. We show that the unfairness caused by the Ethernet capture effect can have a severe impact on the ability to estimate available bandwidth. We define two metrics, surplus bandwidth and fair share bandwidth, that are protocol and application independent available bandwidth metrics. We propose a measurement method, the TOPP method, that measures link load with low risk of triggering an Ethernet capture effect. From TOPP measurements, we can estimate available bandwidth.