Fortinet FortiGate 50A Installation And Configuration Manual page 106

Configuring DHCP services
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3 Select an interface.
You must configure the interface as a DHCP server before it can be selected.
4 Select New to add an address scope.
5 Configure the address scope.
Scope Name
IP Pool
Netmask
Lease Duration
Domain
Default Route
6 Select Advanced if you want to configure Advanced Options.
DNS IP
WINS Server IP
Exclusion Range Optionally enter up to 4 exclusion ranges of IP addresses within the IP pool
7 Select OK.
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.
Enter the address scope name.
Enter the starting IP and ending IP for the range of IP addresses that this
DHCP server assigns to DHCP clients.
Enter the netmask that the DHCP server assigns to the DHCP clients.
Enter the interval, in days, hours and minutes, after which a DHCP client
must ask the DHCP server for a new address.
If you select Unlimited, DHCP leases never expire.
Optionally enter in the domain that the DHCP server assigns to the DHCP
clients.
Enter the default route to be assigned to DHCP clients. The default route
must be on the same subnet as the IP pool.
Enter the addresses of up to 3 DNS servers that the DHCP server assigns
to the DHCP clients.
Add the IP addresses of one or two WINS servers to be assigned to DHCP
clients.
that cannot be assigned to DHCP clients.
Network configuration
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