Edge-Core ECS4620-28T Quick Start Manual page 736

Chapter 19
| Unicast Routing
Configuring the Open Shortest Path First Protocol (Version 2)
Parameters
These parameters are displayed:
◆
Process ID – Process ID as configured in the Network Area configuration screen
(see page 717).
◆
Area ID – Identifier for a stub.
◆
Default Cost – Cost for the default summary route sent into a stub from an area
border router (ABR). (Range: 0-16777215; Default: 0)
Note that he the default cost is set to "0, " the router will not advertise a default
route into the attached stub.
◆
Summary – Controls the use of summary routes.
Summary – Allows an Area Border Router (ABR) to send a summary link
■
advertisement into the stub area.
■ No Summary – Stops an ABR from sending a summary link advertisement
into a stub area.
Routing table space is saved in a stub by blocking Type-4 AS summary LSAs
and Type 5 external LSAs. This option can be used to completely isolate the
stub by also stopping an ABR from sending Type-3 summary LSAs that
advertise the default route for destinations external to the local area or the
autonomous system.
Define an area as a totally stubby area only if routers in the area do not
require summary LSAs from other areas.
Web Interface
To configure protocol settings for a stub:
1.
Click Routing Protocol, OSPF, Area.
2.
Select Configure Area from the Step list.
3.
Select Configure Stub Area from the Action list.
4.
Select a Process ID, and modify the routing behavior for a stub.
5.
Click Apply
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