Step 1. Verify that there is a neighbor relationship between the OSPF routers by using theshow ip ospf neighbor command.
Step 2. Verify that the ABR to the stub area and all routers in the stub area have been configured as a stub using the router configuration command area x stub.
Step 3. Verify that the default-cost command has been configured on the ABR(s) for the stub area. ThedefauIt-cost command will only work on the stub area ABR.
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