TP-Link T3700G-28TQ User Manual page 233

Always:
Metric:
Metric Type:
OSPF Config

ASBR Mode:
ABR Status:
Distance:
RFC 1583
Compatibility:
SPF Delay Time:
SPF Hold Time:
External LSA Count:
External
Checksum:
LSAs Originated:
If Originate is Enable, but the Always option is DISABLE,
OSPF will only originate a default route if the router already
has a default route in its routing table. Set Always to ENABLE
to force OSPF to originate a default route regardless of
whether the router has a default route.
Specify the metric of the default route. The valid value
ranges from 1 to 16777214 and the default is 1.
Set the OSPF metric type of the default route. Two types are
supported: External Type 1 and External Type 2. The default
value is External Type 2.
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 AS-External LSA advertising
the default route.
The router is an Area Border Router if it has active
non-virtual interfaces in two or more OSPF areas.
Specify OSPF route distance. When more than two
protocols have routes to the same destination, only the
route which have smallest distance will be inserted to IP
routing table. The valid value ranges from 0 to 255 and the
default is 110.
Select the preference rules that will be used when choosing
among multiple AS-external LSAs advertising the same
destination. If you select Enable, the preference rules will be
those defined by RFC 1583. Else the preference rules will be
those defined in RFC 2328, which will prevent routing loops
when AS-external LSAs for the same destination have been
originated from different areas. All routers in the OSPF
domain must be configured the same. The default value is
'Enable'.
The number of seconds from when OSPF receives a
topology change to the start of the next SPF calculation. The
valid value ranges from 1 to 600 seconds and the default is
5.
The minimum time in seconds between two consecutive SPF
calculations. The valid value ranges from 1 to 600 seconds
and the default is 10.
The number of AS-External LSAs in the link state database.
LSA The sum of the LS checksums of the AS-External LSAs
contained in the link-state database.
This value represents the number of LSAs originated by this
router.
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