Edimax BR-6258GNL User Manual page 59

You can also establish up to 16 static DHCP leases here:
To add a new MAC address and IP address mapping, input MAC address
and IP address pair above, and then click 'Add' button; to remove a
mapping, check 'Select' box of the mapping entry you wish to remove,
and then click 'Delete' button (or click 'Delete All' button to remove all
mappings).
fields:
Lease Time: Select lease time for each DHCP IP
address lease (how long a client can keep the
same IP address).
DHCP Client Start IP: Input the starting IP address
of DHCP IP pool. The network range must be the
same as 'IP address' field above.
DHCP Client End IP: Input the ending IP address
of DHCP IP pool. The network range must be the
same as 'IP address' field above.
Domain Name: Input the domain name of your
local network, this is optional.