IP address of the router's LAN interface. This is used by local hosts to communicate with the router.

Subnet mask of the router's LAN. A netmask is used to define how "large" a network is.

Turns the DHCP server on or off.

The starting IP address value. e.g., if your router’s LAN IP is 192.168.1.1 and your subnet mask is 255.255.255.0 it means that in your network a valid IP address has to be in the range of [192.168.1.0..192.168.1.254]. If the Start value is set to 100 then the DHCP server will lease out addresses starting from 192.168.1.100.

How many addresses the DHCP server can lease out. If the start address is 192.168.1.100 and the server can lease out 150 addresses, available addresses will be from 192.168.1.100 to 192.168.1.249 (100 + 150 – 1 = 249; this is because the first address is inclusive).

Expire time for leased addresses. Minimum value is 2 minutes

Expire time for leased addresses. Minimum value is 1 hour

Expire time for leased addresses. Minimum value is 120 seconds

DHCP lease time measurement units