Detecting Uncooperative Ethernet Elements using Accurate Round-trip Time Measurements

Delport and Olivier


Citation information

J. P. Delport and M. S. Olivier. Detecting uncooperative Ethernet elements using accurate round-trip time measurements. In D. Browne, editor, Southern African Telecommunication Networks and Applications Conference 2005 (SATNAC 2005) Proceedings, volume 1, pages 153–156, Champagne Castle, South Africa, 9 2005


Knowledge of a networks entities and the physical connections between them (a networks physical topology) can be useful in a variety of network scenarios and applications. Specifically, topology information can be used by administrators to detect unauthorised physical modifications to a network. Gathering accurate topology information manually can be a tedious and error-prone, if not impossible task.

In this paper an active probing technique is used to obtain packet timing information from a set of experimental Ethernet LANs. Packets are sent from a probing host to a target node in a variety of network configurations and the total time from sending out the packet to receiving a reply is measured and stored. The stored timing data is then used to determine the influence of common Ethernet network elements on packet round-trip times. Real-Time Linux is used to obtain low-level and fine grained timing control over the probing hosts network card.

Full text

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BibTeX reference

AUTHOR={J P Delport and Martin S Olivier},
TITLE={Detecting Uncooperative {E}thernet Elements using Accurate Round-trip Time Measurements},
BOOKTITLE={Southern African Telecommunication Networks and Applications Conference 2005 (SATNAC 2005) Proceedings},
EDITOR={David Browne},
ADDRESS={Champagne Castle, South Africa},
PAGES={153--156} )

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