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Passive Duplicate Address Detection for Dynamic Host Configuration Protocol (DHCP)

Forte, Andrea G.; Shin, Sangho; Schulzrinne, Henning G.

During a layer-3 handoff, address acquisition via DHCP is often the dominant source of handoff delay, duplicate address detection (DAD) being responsible for most of the delay. We propose a new DAD algorithm, passive DAD (pDAD), which we show to be effective, yet introduce only a few milliseconds of delay. Unlike traditional DAD, pDAD also detects the unauthorized use of an IP address before it is assigned to a DHCP client.



More About This Work

Academic Units
Computer Science
Department of Computer Science, Columbia University
Columbia University Computer Science Technical Reports, CUCS-011-06
Published Here
April 26, 2011
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