Tenda A6 User Manual page 56

server's IP assignment.

Lease Time: The length of time for the IP address lease.
Configuring a proper lease time improves the efficiency for
the DHCP server to reclaim disused IP addresses.
For example: If the lease time is set to one hour, then the DHCP
server will reclaim disused IP addresses every hour.
8.2 DHCP Client List/ Static Assignment
The DHCP Client List section displays a DHCP dynamic client
list, which includes host name, IP address, MAC address and lease
time info.
Static Assignment: If you would like some devices on your
network to always have fixed IP addresses, you can use this
feature and manually add a static DHCP assignment entry for each
such device. And then a registered MAC will get a correspondingly
reserved IP address while an unregistered MAC will be assigned
with an unused IP address.
Wireless N150 Mini AP/Router
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