Fortinet 548B - Manual (Page 801)

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Selection Criteria
Slot/Port - Select the interface for which data is to be displayed or configured.
Configurable Data
OSPF Area ID - Enter the 32 bit integer in dotted decimal format that uniquely identifies the OSPF
area to which the selected router interface connects. If you assign an Area ID which does not exist,
the area will be created with default values. Leave blank to disable.
Router Priority - Enter the OSPF priority for the selected interface. The priority of an interface is
specified as an integer from 0 to 255. The default is 1, which is the highest router priority. A value of
'0' indicates that the router is not eligible to become the designated router on this network
Retransmit Interval (secs)- Enter the OSPF retransmit interval for the specified interface. This is
the number of seconds between link-state advertisements for adjacencies belonging to this router
interface. This value is also used when retransmitting database descriptions and link-state request
packets. Valid values range from 1 to 3600 seconds (1 hour). The default is 5 seconds.
Hello Interval (secs)- Enter the OSPF hello interval for the specified interface in seconds. This
parameter must be the same for all routers attached to a network. Valid values range from 1 to
65,535. The default is 10 seconds.
Dead Interval (secs)- Enter the OSPF dead interval for the specified interface in seconds. This
specifies how long a router will wait to see a neighbor router's Hello packets before declaring that the
router is down. This parameter must be the same for all routers attached to a network. This value
should a multiple of the Hello Interval (e.g. 4). Valid values range from 1 to 2147483647. The default
is 40.
Iftransit Delay Interval (secs)- Enter the OSPF Transit Delay for the specified interface. This
specifies the estimated number of seconds it takes to transmit a link state update packet over the
selected interface. Valid values range from 1 to 3600 seconds (1 hour). The default value is 1
second.
MTU Ignore - Disables OSPF MTU mismatch detection on receiving packets. Default value is
Disable. (MTU mismatch detection is enabled.)
Passive Mode - Make an interface passive to prevent OSPF from forming an adjacency on an
interface. OSPF advertises networks attached to passive interfaces as stub networks. Interfaces are
not passive by default.
Network Type - Sets the OSPF network type on the interface to broadcast or point-to-point. OSPF
only selects a designated router and originates network LSAs for broadcast networks. No more than
two OSPF routers may be present on a point-to-point link. The default network type for Ethernet
interfaces is broadcast..
Authentication Type - You may select an authentication type other than none by clicking on the
'Configure' button. You will then see a new screen, where you can select the authentication type
from the pulldown menu. The choices are:

None - This is the initial interface state. If you select this option from the pulldown menu on
the second screen you will be returned to the first screen and no authentication protocols will
be run.

Simple - If you select 'Simple' you will be prompted to enter an authentication key. This key
will be included, in the clear, in the OSPF header of all packets sent on the network. All
routers on the network must be configured with the same key.

Encrypt - If you select 'Encrypt' you will be prompted to enter both an authentication key and
an authentication ID. Encryption uses the MD5 Message-Digest algorithm. All routers on the
network must be configured with the same key and ID.
Authentication Key - Enter the OSPF Authentication Key for the specified interface. If you do not
choose to use authentication you will not be prompted to enter a key. If you choose 'simple'