It specifies the range of IP addresses that can be assigned to devices connected to
the router. The default range is 192.168.0.100 to 192.168.0.200.
It specifies the valid duration of the IP address that is assigned to a client.
When the lease time reaches half, the client will send a DHCP Request to the
DHCP server for renewal. If the renewal succeeds, the lease is renewed based on
the time of the renewal application; if the renewal fails, the renewal process is
repeated again at 7/8 of the lease period. If it succeeds, the lease is renewed
based on the time of the renewal application. If it still fails, the client needs to
reapply for IP address information after the lease expires.
It is recommended to keep the default value.
It specifies the primary DNS address of the router, which is assigned to the clients.
You can change it if necessary.
Make sure that the primary DNS server is the IP address of the correct DNS server
or DNS proxy. Otherwise, you may fail to access the internet.
It specifies the secondary DNS address of the router used to assign to the clients.
It is an optional field and is left blank by default.