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SonicOS 5.8.1 Administrator Guide
Configuring DHCP Server for Dynamic Ranges
Because SonicOS Enhanced allows multiple DHCP scopes per interface, there is no
requirement that the subnet range is attached to the interface when configuring DHCP scopes.
To configure DHCP server for dynamic IP address ranges, follow these instructions:
Step 1 In the Network > DHCP Server page, at the bottom of the DHCP Server Lease Scopes table,
click Add Dynamic. The Dynamic Ranges Configuration window is displayed.
General Settings
Step 2 In the General page, make sure the Enable this DHCP Scope checkbox is selected if you want
to enable this range.
Step 3 To populate the Range Start, Range End, Default Gateway, and Subnet Mask fields with
default values for a certain interface, select the Interface Pre-Populate checkbox near the
bottom of the page and choose the interface from the drop-down list. The populated IP
addresses are in the same private subnet as the selected interface.
Note To select an interface from the Interface menu, it must first be fully configured and it must
be of the zone type, LAN, WLAN, or DMZ, or be a VLAN sub-interface.
Step 4 Use the populated IP address range entries in the Range Start and Range End fields or type
in your own IP address range.
Step 5 Type the number of minutes an IP address is used before it is issued another IP address in the
Lease Time (minutes) field. 1440 minutes (24 hours) is the default value.
Step 6 Use the populated gateway address or type the IP address of the gateway into the Default
Gateway field.
Step 7 Use the populated subnet mask or type the gateway subnet mask into the Subnet Mask field.
Step 8 Select Allow BOOTP Clients to use Range if you have BOOTP Clients on your network.