I recently has to configure a VDOM for a guest network. As there are anywhere between 300 - 500 clients a day, we decided to drop the DHCP lease to 12 hours, as the the netmask is already a /22. This can only be done via the CLI.
Note that the
lease-time unit is seconds.
config system dhcp server edit 1 set lease-time 43200 set default-gateway 192.168.0.1 set netmask 255.255.252.0 set interface "port12" config ip-range edit 1 set start-ip 192.168.0.5 set end-ip 192.168.3.254 next end set timezone-option specify set timezone 64 set dns-server1 184.108.40.206 set dns-server2 220.127.116.11 next end