Configuring as a DHCP server

If you wish to assign an IP address to the client computers in the network dynamically through your gateway, you must configure it as a DHCP server. To activate your device as a DHCP server, you must first define IP address pools from which the IP addresses are distributed to the requesting clients.

For this, go to the following menu:

Go to Local Services -> DHCP Server -> DHCP Pool -> New.

Local Services -> DHCP Server -> DHCP Pool -> New

Relevant fields in menu DHCP Pool

Field	Meaning
Interface	Here you select the interface via which the IP addresses are to be distributed by DHCP.
IP Address Range	Enter the first and last IP addresses to be assigned by DHCP.
Pool Usage	Specify whether the IP pool is used for DHCP requests in the same subnet or for DHCP requests that have been forwarded to your device from another subnet. In this case it is possible to define IP addresses from another network.

Additional configuration parameters can be found under Advanced Settings:

Relevant fields in the menu Advanced Settings

Field	Meaning
Gateway	Here you can specify whether the gateway is to be used as a default gateway or can enter a gateway IP address if the gateway is not to be used as a default gateway.
Lease Time	The length of time in minutes that the client can keep the IP address.

Proceed as follows to configure your gateway as a DHCP server:

Select your LAN interface for Interface, e.g. en1-0 .
Enter the first and last IP addresses from your LAN under IP Range, e.g. 192.168.0.2 and 192.168.0.10 .
In Pool Use, select Local .
Under Gateway select Use gateway as router .
Leave the Lease Time set to 120 .
Confirm with OK.

The GUI™ offers a facility for checking whether or not IP addresses are assigned to clients from the DHCP pool and if so which addresses are involved. To check who has received an IP address, select the following menu options:

Go to Local Services -> DHCP Server -> IP/MAC Binding.

Local Services -> DHCP Server ->IP/MAC Binding

Here you obtain all the important information concerning the issue of IP addresses from the DHCP pool.

The gateway assigns an IP address to the client as the DHCP server and not only sends the IP address of the gateway to the client, but also the IP address of the DNS server.

Use the following menu item to determine which IP address the gateway sends to the client as the DNS server address:

Go to Local Services -> DNS -> Global Settings -> Advanced Settings.

Local Services -> DNS -> Global Settings -> Advanced Settings

Relevant fields in the Advanced Settings menu

Selection Meaning

Selection	Meaning
IP Address to use for DNS/WINS Server Assignment: As DHCP Server	Select the most suitable method for your network environment from the following options: `None` : The gateway issues no DNS server IP addresses with this setting. `Own IP address` : The gateway assigns its own IP address as DNS. `Global DNS Setting` : The gateway assigns the IP addresses as DNS, which you have configured or assigned dynamically in the Local Services -> DNS -> Global Settings menu.

IP Address to use for DNS/WINS Server Assignment:

As DHCP Server

Select the most suitable method for your network environment from the following options:

None : The gateway issues no DNS server IP addresses with this setting.
Own IP address : The gateway assigns its own IP address as DNS.
Global DNS Setting : The gateway assigns the IP addresses as DNS, which you have configured or assigned dynamically in the Local Services -> DNS -> Global Settings menu.

You can normally keep the Own IP Address setting for As DHCP Server.