Parameter | Description |
Area ID | An OSPF area identifier configured for a group of OSPF routers. (For information |
| on how to assign this identifier to a specific interface, see4.5.6.1.5 Configuring |
| OSPF.) |
Type | Indicates area type: |
| Normal – An area which can send or receive external route information. |
| Stub – An area which cannot send or receive external route information. It relies |
| on a single default route provided by its Area Border Router (ABR) to access |
| destinations outside of the stub. A stub can be used to reduce the amount of |
| topology data that has to be exchanged over the network. |
| NSSA – A not so stubby area cannot send but can receive external route |
| information. The ABR imports external routes and floods this information to all |
| routers within the NSSA. |
|
|
An Autonomous System Boundary Router (ASBR) can import external routes and flood this information to the entire Autonomous System.
NOTE: To add a new Area ID, use the <Add> button. (The default 0.0.0.0 indicates the OSPF backbone.) To modify or delete an existing Area ID, highlight the table entry with the cursor and select Enter.
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