Matching the DHCP lease times with the connection limit of your AP doesn't strike me as the best way of handling the issue. The two don't have to match. Lower the DHCP lease time to something like twice the length of the demo (completely arbitrary suggestion) and expand your DHCP scope to accommodate as many leases as you think you'll have in a

DHCP POOL "LEASE" TIME - Cisco Community re: dhcp pool "lease" time bernhard, i had presumed from your question that you did not want addresses to be given out again staright away, dhcp uses lease times for this, as the routers lease times are in days then you will have to set it to at least 1 day otherwise the ip addresses will go straight back into the pool. What is DHCP Lease Time and how long should it be Apr 21, 2015 DHCP (Dynamic Host Configuration Protocol) Basics DHCP information obtained by the client from a DHCP server will have a lease time associated with it. The lease time defines how long the client can use the DHCP-assigned information. When the lease reaches certain milestones, the client will attempt to renew its DHCP information.

The TCP/IP Guide - DHCP Lease "Life Cycle" Overview

DHCP Local Server - TechLibrary - Juniper Networks Aug 04, 2004

Defining DHCP Lease Periods - Cisco IOS Cookbook, 2nd

What is DHCP Lease Time and how long should it be Apr 21, 2015 DHCP (Dynamic Host Configuration Protocol) Basics