dhcpd pool exhaustion - What's the result?

Posted by jarmund on Server Fault See other posts from Server Fault or by jarmund
Published on 2012-09-11T20:12:40Z Indexed on 2012/09/11 21:40 UTC
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I have a DHCP server that serves leases to several houndred, maybe up to a thousand, different clients on an average day. The pool consists of 242 IPs, and due to the highly dynamic nature of the network, it's enough 99% of the time (most devices are gone from the network in a few minutes), despite having a lease time of 3600.

Now, imagine if more clients than that connect to the network during an hour. The sollution is obvious: Decrease lease time, or increase the DHCP pool, however, what i would like to know: What happens when dhcpd has exhausted the pool? Are new DHCP requests simply ignored?

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