D-Link DRO-210i 3 DHCP, DNS and Time

DHCP, DNS and Time

Dlink DRO-210i User Guide 18

3 DHCP, DNS and Time

DHCP (Dynamic Host Configuration Protocol) is a method of automatically assigning IP

address, subnet mask, default gateway and DNS server IP address to hosts on the LAN.

This router provides an in-built DHCP Server. In addition, a DHCP Relay is available to

relay the DHCP Requests to a DHCP Server on another port.

The DHCP server assigns and manages IP addresses from a specified address pool to

DHCP clients. When a DHCP server receives a request from a DHCP client, it returns the

configuration parameters (such as an IP address, a MAC address, a domain name, and a

lease for the IP address) to the client in a unicast message format. Because the DHCP

server maintains all the configurations parameters, an administrator only needs to update

the central DHCP Server when any configuration parameter is to be changed.

Compared to the static assignment where the client owns the address, dynamic addressing

by the DHCP server leases the address to each cli ent for a defined period of time. During

the life cycle of the lease, the client is guaranteed to have a unique IP address that can last

for the entire period. If the client needs to renew the lease from the server it can do so

before the expiration of the lease. The client may also decide at any time that it no longer

wishes to use the IP address it was assigned, and may terminate the lease by releasing the

IP address. The administrator can configure this lease time in the DHCP server.

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Note: The DHCP Server can assign up to 253 IP Addresses to the LAN Clients. For

example, if the router IP address is 192.168.100.254, the DHCP Server can assign IP

Addresses from 192.168.100.1 to 192.168.100.253. Please note that the addresses

ending in 0 and 255 are reserved for other uses.

Select Misc →

→→

→ DHCP →

→→

→ DHCP Server to configure DHCP Server as explained below.

DHCP Server

DHCP Server Status Select Enable or Disable option to activate or deactivate the DHCP Server

feature on the router (default value is Enable).

Starting IP address Enter the starting IP address from the range of IP address assigned to the

DHCP Server.

Ending IP address Enter the ending IP address from the range of IP address assigned to the

DHCP Server.

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