Status: DHCP server

By default, the DHCP sever mode on the ADSL Router is enabled. The following shows the configuration that has been configured by default. Scroll down the settings from the Web Management.

DHCP Server status:
Default lease time The default time (43200 seconds) a DHCP client (your PCs) can use an assigned IP address before it must renew its configuration with the DHCP server (Router). 
Allow Bootp This option determines whether or not DHCP server can respond to BOOTP requests.
By default, the value is true (DHCP server responds to BOOTP queries).
Max lease time The maximum time (86400 seconds) that is assigned to a leased DHCP Client if the client does not ask for a specific expiry time.
Allow Unknown Clients This option enables/disables the dynamic assignment of addresses to unknown clients.
By default, the value is true (IP addresses can be dynamically assigned to unknown clients).
Enabled The status of DHCP server, whether it is being enabled or disabled.
By default, the value is true (DHCP server is enabled. You can set the DHCP Server configurations).
Subnet:
Subnet Value The network address to which an IP address belongs.
Subnet Mask The subnet to which the IP address belongs to.
Max lease time The maximum time (86400 seconds) that is assigned to a leased DHCP Client if the client does not ask for a specific expiry time.
Default lease time The default time (43200 seconds) a DHCP client (your PCs) can use an assigned IP address before it must renew its configuration with the DHCP server (Router). 
IP range The range of IP address (in an existing subnet) which DHCP server can use them for allocating to requesting clients.
Option: routers Refers to the Gateway IP address of your PC (the IP address of your Router) that will resolve any unknown destination IP address requested by clients.
Option: domain-name -servers Refers to the Gateway IP address of your PC (the IP address of your Router) that will resolve any unknown destination IP address requested by clients when the DNS relay is enabled.