Fortinet 548B - Manual (Page 795)

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same destination. If you select Enable, the preference rules will be those defined by RFC 1583. If
you select Disable, the preference rules will be those defined in Section 16.4.1 of RFC 2328. The
newer preference rules prevent routing loops when AS-external-LSAs for the same destination have
been originated from different areas. The default value is Enable. All routers in the OSPF domain
must be configured the same. If all OSPF routers are capable of operating according to RFC 2328,
RFC 1583 Compatibility should be disabled.
Opaque LSA Status - Set this parameter to Enable to if OSPF should store and flood opaque LSAs.
An opaque LSA is used for flooding user-defined information within an OSPF router domain.
Exit Overflow Interval - When the number of non-default external LSAs exceeds a configured limit,
the router enters an overflow state as defined in RFC 1765. The Exit Overflow Interval specifies how
long OSPF must wait before attempting to leave overflow state. In overflow state, OSPF cannot
originate non-default external LSAs. If the Exit Overflow Interval is 0, OSPF will not leave overflow
state until it is disabled and re-enabled. The range is 0 to 2,147,483,647 seconds.
SPF DelayTime(secs) - Delay time is the number of seconds from when OSPF receives a topology
change to the start of the next SPF calculation. Delay Time is an integer from 0 to 65535 seconds.
The default time is 5 seconds. A value of 0 means that there is no delay; that is, the SPF calculation
is started upon a topology change.
SPF HoldTime(secs) - Hold Time is the minimum time in seconds between two consecutive SPF
calculations. The range is 0 to 65,535 seconds. The default time is 10 seconds. A value of 0 means
that there is no delay; that is, two SPF calculations can be done, one immediately after the other.
External LSDB Limit - The maximum number of External LSAs that can be stored in the database.
A value of -1 indicates there is no limit. The valid range of values is (-1 to 2147483647).
Default Metric - Sets a default for the metric of redistributed routes. This field is blank if a default
metric has not been configured. The range of valid values is (1 to 16777214)
Maximum Paths - Configure the maximum number of paths that OSPF can report to a given
destination. The range of valid values is (1 to 32)
AutoCost Reference Bandwidth - Configure the auto-cost reference-bandwidth to control how
OSPF calculates link cost. Specify the reference bandwidth in megabits per second. Unless a link
cost is configured, the link cost is computed by dividing the reference bandwidth by the interface
bandwidth. The range is (1 to 4294967)
Default Passive Setting - Configure the global passive mode setting for all OSPF interfaces.
Configuring this field overwrites any present interface level passive mode setting. OSPF does not
form adjacencies on passive interfaces, but does advertise attached networks as stub networks.
Default Route Advertise
Default Information Originate - When this parameter is enabled, OSPF originates an external LSA
advertising a default route (0.0.0.0/0.0.0.0).
Always - If Default Information Originate is enabled, but the Always option is FALSE, OSPF will only
originate a default route if the router already has a default route in its routing table. Set Always to
TRUE to force OSPF to originate a default route regardless of whether the router has a default route.
Metric - Specifies the metric of the default route. The range of valid values is (0 to 16777214)
Metric Type - Sets the OSPF metric type of the default route.
Non-Configurable Data
ABR Status - The router is an Area Border Router if it has active non-virtual interfaces in two or
more OSPF areas.
ASBR Status - The router is an Autonomous System Boundary Router if it is configured to
redistribute routes from another protocol, or if it is configured to originate an external LSA advertising
the default route.
Stub Router - When OSPF runs out of resources to store the entire link state database, or any other
state information, OSPF goes into stub router mode. As a stub router, OSPF re-originates its own