Define Address Ranges

This screen shows all of the address ranges you already have allocated for DHCP. If you would like to define a new range, click on the Define New Range link.

After clicking the link you will be presented with the following screen.

All fields must be filled out before you will be able to add this new range. A description of each option is listed below:

Subnet

The DHCP Subnet is the "network" that the block of IP's is on. For example, if you want to allocate 192.168.1.10 (Start Address) through 192.168.1.20 (End Address), you would enter 192.168.1.0 here.

Netmask

This is the netmask value for the block of IP's you are allocating. A sample netmask is 255.255.255.0. This netmask is sent to the client when they request an address.

Gateway

The DHCP Gateway is the machine that the client machines need to access to "get to the outside world." This is also referred to as a "default route." When the client machine requests an IP address, this is sent back to them along with the assigned address.

Domain Name

This is the domain that the client machines are in. An example value is "inside.xyzcorp.com." This is generally the "domain" portion of the DNS name for the IP address.

DNS Servers

These are the DNS servers that the clients should be assigned. A DNS server is used to resolve names into IP addresses. When the client requests an IP address, the server will send these DNS servers back along with the assigned address. You can enter as many DNS servers as you want here, provided that they are separated with spaces.

Start Address

This is the first IP in the range you wish to allocate. If you want to allocate the range 192.168.1.10 through 192.168.1.20, you would enter 192.168.1.10 here.

End Address

This is the last IP in the range you wish to allocate. If you want to allocate the range 192.168.1.10 through 192.168.1.20, you would enter 192.168.1.20 here.

When you are done filling out all the entry boxes click the Create Range button.

After the new range is created you will be brought back to the previous screen. You will now see your newly defined range listed here. You have the ability to edit this range by selecting the Edit link associated with the range you wish to edit.

The edit screen is almost identical to the range creation screen with the addition of a delete button to delete the entire range.