Fortinet FortiGate 50A - Manual (Page 95)

Network configuration Configuring interfaces
FortiGate-50A Installation and Configuration Guide
95
4 Change the IP address and Netmask as required.
The IP address of the interface must be on the same subnet as the network the
interface is connecting to.
Two interfaces cannot have the same IP address and cannot have IP addresses on
the same subnet.
5 Select OK to save your changes.
If you changed the IP address of the interface to which you are connecting to manage
the FortiGate unit, you must reconnect to the web-based manager using the new
interface IP address.
Configuring an interface for DHCP
You can configure any FortiGate interface to use DHCP.
If you configure the interface to use DHCP, the FortiGate unit automatically broadcasts
a DHCP request. You can disable connect to server if you are configuring the
FortiGate unit offline and you do not want the FortiGate unit to send the DHCP
request.
By default, the FortiGate unit also retrieves a default gateway IP address and DNS
server IP addresses from the DHCP server. You can disable the option Retrieve
default gateway and DNS from server if you do not want the DHCP server to configure
these FortiGate settings.
To configure an interface for DHCP
1 Go to System > Network > Interface.
2 Choose an interface and select Modify .
3 In the Addressing Mode section, select DHCP.
4 Clear the Retrieve default gateway and DNS from server check box if you do not want
the FortiGate unit to obtain a default gateway IP address and DNS server IP
addresses from the DHCP server.
By default, this option is enabled.
5 Clear the Connect to Server check box if you do not want the FortiGate unit to connect
to the DHCP server.
By default, this option is enabled.
6 Select Apply.
The FortiGate unit attempts to contact the DHCP server from the interface to set the
IP address, netmask, default gateway IP address, and DNS server IP addresses.
7 Select Status to refresh the addressing mode status message.
8 Select OK.
initializing No activity
connecting The FortiGate unit is attempting to connect to the DHCP server.
connected The FortiGate unit retrieves an IP address, netmask, and other settings from
the DHCP server.
failed The FortiGate unit was unable to retrieve an IP address and other
information from the DHCP server.