area-type

Configures a particular OSPF area as STUB, Totally STUB, NSSA or Totally NSSA. Areas can defined as:

• stub area - Is an area that does not receive route advertisements external to the AS (autonomous system), and routing from within the area is based entirely on a default route.
• totally-stub - Is an area that does not allow summary routes and external routes. A default route is the only way to route traffic outside of the area. When there is only one route out of the area, fewer routing decisions are needed, lowering system resource utilization.
• non-stub - Is an area that imports autonomous system external routes and forwards to other areas. However. it still cannot receive external routes from other areas.
• nssa - A NSSA (Not-So-Stubby Area) is an extension of a stub that allows the injection of limited external routes into a stub area. If selecting NSSA, no external routes, except a default route, enter the area.
• totally nssa - Is a NSSA using 3 and 4 summary routes are not flooded into this type of area. It is also possible to declare an area both totally stubby and not-so-stubby, which means that the area will receive only the default route from area 0.0.0.0, but can also contain an ASBR (Autonomous System Boundary Router) that accepts external routing information and injects it into the local area, and from the local area into area 0.0.0.0.

Supported in the following platforms:

• Access Points — AP 7161, AP 7502, AP-7522, AP 7532, AP 7562, AP 7602, AP 7622, AP-8163, AP-8432, AP-8533
• Wireless Controllers — RFS 4000

Syntax

area-type [nssa|stub]

area-type nssa {default-cost|no-summary|translate-always|translate-candidate|
translate-never}

area-type nssa {default-cost <0-16777215> {no-summary}|no-summary 
{default-cost <0-16777215>}}

area-type nssa {translate-always|translate-candidate|translate-never} 
{(default-cost <0-16777215>|no-summary)}

area-type stub {default-cost <0-16777215> {no-summary}|no-summary 
{default-cost <0-16777215>}}

Parameters

area-type nssa {default-cost|no-summary|translate-always|translate-candidate|
translate-never}

Examples

nx9500-6C8809(config-profile default-rfs4000-router-ospf-area-0.0.0.1)#area-type stub default-cost 1

nx9500-6C8809(config-profile default-rfs4000-router-ospf-area-0.0.0.1)#show context
  area 0.0.0.1
   area-type stub default-cost 1
nx9500-6C8809(config-profile default-rfs4000-router-ospf-area-0.0.0.1)#

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