FortiGate Version 3.0 MR4 Administration Guide
194 01-30004-0203-20070102
OSPF Router Dynamic
Figure 107 shows the New/Edit RIP Interface dialog box belonging to a FortiGate
unit that has an interface named “internal”. The names of the interfaces on your
FortiGate unit may be different.
OSPF
Open shortest path first (OSPF) is a link-state routing protocol that is most often
used in large heterogeneous networks to share routing information among routers
in the same Autonomous System (AS). FortiGate units support OSPF version 2
(see RFC 2328).
OSPF autonomous systems
An OSPF AS is typically divided into logical areas linked by area border routers.
An area comprises a group of contiguous networks. An area border router links
one or more areas to the OSPF network backbone (area ID 0). To specify the
characteristics of an OSPF AS, see “Defining an OSPF AS” on page 195.
When the FortiGate unit has an interface to an OSPF area, it can participate in
OSPF communications. The FortiGate unit uses the OSPF Hello protocol to
acquire neighbors in an area. A neighbor is any router that has an interface to the
same area as the FortiGate unit. After initial contact, the FortiGate unit exchanges
Hello packets with its OSPF neighbors regularly to confirm that the neighbors can
be reached.
Interface Select the name of the FortiGate interface to which these settings
apply. The interface must be connected to a RIP-enabled network.
The interface can be a virtual IPSec or GRE interface.
Send Version,
Receive Version
Select to override the default RIP-compatibility setting for sending
and receiving updates through the interface: RIP version 1, version 2
or Both.
Authentication Select an authentication method for RIP exchanges on the specified
interface:
• Select None to disable authentication.
• If the interface is connected to a network that runs RIP version 2,
optionally select Text and type a password (up to 35 characters)
in the Password field. The FortiGate unit and the RIP updates
router must both be configured with the same password. The
password is sent in clear text over the network.
• Select MD5 to authenticate the exchange using MD5.
Passive Interface Select to suppress the advertising of FortiGate routing information
through the specified interface. For the interface to respond to RIP
requests, clear Passive Interface.
Note: Basic OSPF routing options can be configured through the web-based manager.
Many additional options may be configured through CLI commands only. For complete
descriptions and examples of how to use CLI commands to configure OSPF settings, see
the “router” chapter of the FortiGate CLI Reference.
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