Usage-based dhcp lease time optimization

TitleUsage-based dhcp lease time optimization
Publication TypeConference Papers
Year of Publication2007
AuthorsKhadilkar M, Feamster N, Sanders M, Clark R
Conference NameProceedings of the 7th ACM SIGCOMM conference on Internet measurement
Date Published2007///
Conference LocationNew York, NY, USA
ISBN Number978-1-59593-908-1
Keywordsdhcp, network management, OPTIMIZATION, usage

The Dynamic Host Configuration Protocol (DHCP) is used to dynamically allocate address space to hosts on a local area network. Despite its widespread usage, few studies exist on DHCP usage patterns, and even less is known about the importance of setting the lease time (the time that a client retains ownership over some IP address) to an appropriate value. Lease time can greatly affect the tradeoff between address space utilization and the number of both renewal messages and client session expirations. In this paper, using a DHCP trace for 5 weekdays from the Georgia Tech campus network, we present the largest known study of DHCP utilization. We also explore how various strategies for setting lease times can dramatically reduce the number of renewals and expirations without prohibitively increasing address space utilization.