Product guide

5. Assign VLANs and/or Subnets to Each Area . . . . . . . . . . . . . . 5-64
6. Optional: Assigning Loopback Addresses to an Area . . . . . . . 5-65
7. Optional: Configure for External Route Redistribution in
an OSPF Domain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-67
8. Optional: Configure Ranges on an ABR To Reduce
Advertising to the Backbone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-70
9. Optional: Influence Route Choices by Changing the
Administrative Distance Default . . . . . . . . . . . . . . . . . . . . . . . . . . 5-73
10: Optional: Change OSPF Trap Generation Choices . . . . . . . . 5-74
11. Optional: Adjust Performance by Changing the VLAN
or Subnet Interface Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-75
12. Optional: Configuring OSPF Interface Authentication . . . . . . . . . 5-80
13. Configuring an ABR To Use a Virtual Link to the Backbone . . . . 5-82
Optional: Adjust Virtual Link Performance by Changing
Displaying OSPF Interface Information for a Specific VLAN
OSPF Equal-Cost Multipath (ECMP) for Different
Subnets Available Through the Same
Configuring a Virtual Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-83
the Interface Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-85
Configuring OSPF Authentication on a Virtual Link . . . . . . . . . . 5-88
Displaying OSPF Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-90
Displaying General OSPF Configuration Information . . . . . . . . . 5-91
Displaying OSPF Area Information . . . . . . . . . . . . . . . . . . . . . . . . 5-92
Displaying OSPF External Link State Information . . . . . . . . . . . 5-93
Displaying OSPF Interface Information . . . . . . . . . . . . . . . . . . . . 5-95
or IP Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-97
Displaying OSPF Link State Information . . . . . . . . . . . . . . . . . . . 5-98
Displaying OSPF Neighbor Information . . . . . . . . . . . . . . . . . . . 5-101
Displaying OSPF Redistribution Information . . . . . . . . . . . . . . . 5-103
Displaying OSPF Redistribution Filter (restrict) Information . 5-103
Displaying OSPF Virtual Neighbor Information . . . . . . . . . . . . . 5-104
Displaying OSPF Virtual Link Information . . . . . . . . . . . . . . . . . 5-105
Displaying OSPF Route Information . . . . . . . . . . . . . . . . . . . . . . 5-107
Displaying OSPF Traps Enabled . . . . . . . . . . . . . . . . . . . . . . . . . 5-109
Next-Hop Routes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-109
Displaying the Current IP Load-Sharing Configuration . . . . . . 5-110
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