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Network configuration Configuring DHCP services
FortiGate-4000 Installation and Configuration Guide 165
Adding a reserve IP to a DHCP server
If you have configured an interface as a DHCP server, you can reserve an IP address
for a particular device on the network according to the MAC address of the device.
When you add the MAC address of a device and an IP address to the reserve IP list,
the DHCP server always assigns this IP address to the device.
To add a reserve IP you must first select the interface and scope to which you want to
add the reserve IP.
To add a reserve IP to a DHCP server
1 Go to System > Network > DHCP.
2 Select Reserve IP.
3 Select an interface.
You must configure the interface as a DHCP server before you can select it.
4 Select a scope.
You must configure an address scope for the interface before you can select it.
5 Select New to add a reserved IP.
6 Configure the reserved IP.
7 Select OK.
Viewing a DHCP server dynamic IP list
You can view the list of IP addresses that the DHCP server has assigned, their
corresponding MAC addresses, and the expiry time and date for these addresses.
To view a DHCP server dynamic IP list
1 Go to System > Network > DHCP.
2 Select Dynamic IP.
3 Select the interface for which you want to view the list.
IP Enter an IP address. The IP address must be within the IP pool added to the
selected scope.
MAC Enter the MAC address of the device.
Name Optionally, specify a name for the IP and MAC address pair.
Note: The reserved IP cannot be assigned to any other device. You can only add a given IP
address or MAC address once.