Fortinet FortiGate Series Administration Manual page 189

System Network
FortiGate Version 4.0 MR1 Administration Guide
01-410-89802-20090903
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By default, low-end models are configured to DHCP addressing mode with Override
Internal DNS and Retrieve default Gateway from DHCP server both enabled. These
settings allow for easy out-of-the-box configuration.
To configure DHCP on an interface
1 Go to System > Network > Interface.
2 Select Create New or select the Edit icon of an existing interface.
3 In the Addressing mode section, select DHCP.
Figure 76: Interface DHCP settings
Status Displays DHCP status messages as the FortiGate unit connects to the
DHCP server and gets addressing information. Select Status to refresh
the addressing mode status message.
Only displayed if you selected Edit.
Status can be one of:
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•
•
•
Obtained The IP address and netmask leased from the DHCP server.
IP/Netmask Only displayed if Status is connected.
Renew Select to renew the DHCP license for this interface.
Only displayed if Status is connected.
Expiry Date The time and date when the leased IP address and netmask is no longer
valid.
Only displayed if Status is connected.
Default Gateway The IP address of the gateway defined by the DHCP server.
Only displayed if Status is connected, and if Receive default gateway
from server is selected,.
Distance Enter the administrative distance for the default gateway retrieved from
the DHCP server. The administrative distance, an integer from 1-255,
specifies the relative priority of a route when there are multiple routes to
the same destination. A lower administrative distance indicates a more
preferred route. The default distance for the default gateway is 1.
Retrieve default Enable to retrieve a default gateway IP address from the DHCP server.
The default gateway is added to the static routing table.
gateway from server
Enabled by default on low-end models.
Override internal DNS Enable to use the DNS addresses retrieved from the DHCP server
instead of the DNS server IP addresses on the DNS page.
On low end models, this is enabled by default.
When VDOMs are enabled, you can override the internal DNS only on
the management VDOM.
initializing - No activity.
connecting - interface attempts to connect to the DHCP server.
connected - interface retrieves an IP address, netmask, and other
settings from the DHCP server.
failed - interface was unable to retrieve an IP address and other
settings from the DHCP server.
Configuring interfaces
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