Add DHCP Dynamic Scope

To add a dynamic scope

1. From the General view, to enable this scope, ensure Enable this DHCP Scope is selected. This option is selected by default.

2. To populate the Range Start, Range End, Default Gateway, and Subnet Mask fields:

   1. With default values for a certain interface:

      1. Select Interface Pre-Populate near the bottom of the dialog. The selections become available. This option is not selected by default.
      2. Select the interface. The populated IP addresses are in the same private subnet as the selected interface.

      To select an interface from Interface Pre-Populate, the interface must first be fully configured and it must be either:

      • Of the zone type LAN, WLAN, or DMZ.
      • A VLAN subinterface
        • Go to Step 3.

   2. Manually:

      1. Type in your own IP address range.
      2. Enter the number of minutes an IP address is leased by the scope before it is issued another IP address in the Lease Time (minutes) field. The minimum is 0, the maximum is 71582789, and 1440 minutes (24 hours) is the default.
      3. Enter the IP address of the gateway into the Default Gateway field.
      4. Enter the gateway subnet mask into the Subnet Mask field.
3. Optionally, enter a comment in the Comment field.

4. The Interface Pre-Populate option populates the DHCP scope configuration with information from the selected interface. After the scope has been added, you might notice that the Interface reads “N/A.”

5. Select Allow BOOTP Clients to use Range if you have BOOTP Clients on your network. This option is not selected by default.

   BOOTP stands for bootstrap protocol, which is a TCP/IP protocol and service that allows disables workstations to obtain their IP address, other TCP/IP configuration information, and their boot image file from a BOOTP server.

6. Click DNS/WINS to continue configuring the DHCP Server feature.