TP-Link T3700G-28TQ T3700G-28TQ V1 UG - Page 195

OSPF Config, External LSA Count

Page 195 highlights

 OSPF Config ASBR Mode: ABR Status: Distance: RFC 1583 Compatibility: SPF Delay Time: SPF Hold Time: External LSA Count: External Checksum: LSA LSAs Originated: LSAs Received: Default Metric: Maximum Paths: Auto Cost: Reference Bandwidth: 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 5. The number of AS-External LSAs in the link state database. 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. The number of LSAs received from other routers in OSPF domain. Set a default for the metric of redistributed routes. The valid value ranges from 1 to 16777214 and the default is 20. Set the number of paths that OSPF can report for a given destination. The valid value ranges from 1 to 32 and the default is 5. Configure the Auto Cost to control how OSPF calculates link cost. When Enable selected, unless the link cost is manually configured, the link cost is computed by dividing the reference bandwidth by the interface bandwidth. When Disable selected, the link cost should be manually configured or use default value. The default option is 'Enable'. Specify the reference bandwidth in megabits per second. The valid value ranges from 1 to 4294967 Mbps and the default is 1000Mbps. 184

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OSPF Config
ASBR Mode:
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.
ABR Status:
The router is an Area Border Router if it has active non-virtual
interfaces in two or more OSPF areas.
Distance:
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.
RFC 1583
Compatibility:
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'.
SPF Delay Time:
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.
SPF Hold Time:
The minimum time in seconds between two consecutive SPF
calculations. The valid value ranges from 1 to 600 seconds
and the default is 5.
External LSA Count:
The number of AS-External LSAs in the link state database.
External
LSA
Checksum:
The sum of the LS checksums of the AS-External LSAs
contained in the link-state database.
LSAs Originated:
This value represents the number of LSAs originated by this
router.
LSAs Received:
The number of LSAs received from other routers in OSPF
domain.
Default Metric:
Set a default for the metric of redistributed routes. The valid
value ranges from 1 to 16777214 and the default is 20.
Maximum Paths:
Set the number of paths that OSPF can report for a given
destination. The valid value ranges from 1 to 32 and the
default is 5.
Auto Cost:
Configure the Auto Cost to control how OSPF calculates link
cost. When Enable selected, unless the link cost is manually
configured, the link cost is computed by dividing the reference
bandwidth by the interface bandwidth. When Disable selected,
the link cost should be manually configured or use default
value. The default option is 'Enable'.
Reference
Bandwidth:
Specify the reference bandwidth in megabits per second. The
valid value ranges from 1 to 4294967 Mbps and the default is
1000Mbps.
184