Configuring interfaces | Network configuration |
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Configuring an interface for PPPoE
Use the following procedure to configure any FortiGate interface to use PPPoE.
If you configure the interface to use PPPoE, the FortiGate unit automatically broadcasts a PPPoE 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 PPPoE request.
By default, the FortiGate unit also retrieves a default gateway IP address and DNS server IP addresses from the PPPoE server. You can disable the option Retrieve default gateway and DNS from server if you do not want the PPPoE server to configure these FortiGate settings.
To configure an interface for PPPoE
1Go to System > Network > Interface.
2Choose an interface and select Modify 
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3In the Addressing Mode section, select PPPoE.
4Enter your PPPoE account User Name and Password.
5Clear 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 PPPoE server.
By default, this option is enabled.
6Clear the Connect to Server check box if you do not want the FortiGate unit to connect to the PPPoE server.
By default, this option is enabled.
7Select Apply.
The FortiGate unit attempts to contact the PPPoE server from the interface to set the IP address, netmask, default gateway IP address, and DNS server IP addresses.
8Select Status: to refresh the addressing mode status message. Possible messages:
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 PPPoE server. |
failed | The FortiGate unit was unable to retrieve an IP address and other |
| information from the PPPoE server. |
9Select OK.
Adding a secondary IP address to an interface
You can use the CLI to add a secondary IP address to any FortiGate interface. The secondary IP address cannot be the same as the primary IP address but it can be on the same subnet.
To add a secondary IP address from the CLI enter the command:
set system interface <intf_str> config secip <second_ip> <netmask_ip>
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