SMC Networks SMC6724L3 manual Area stub, 257, No stub is configured

IP ROUTING COMMANDS

area stub

Use this command to define a stub area. To remove a stub, use the no form without the optional keyword. To remove the summary attribute, use the no form with the summary keyword.

Syntax

area area-idstub [summary] no area area-idstub [summary]

•area-id- Identifies the stub area.

(The area ID must be in the form of an IP address.)

•summary - Makes an Area Border Router (ABR) send a summary link advertisement into the stub area. (Default: no summary)

Command Mode

Router Configuration

Default Setting

No stub is configured.

Command Usage

•All routers in a stub must be configured with the same area ID.

•Routing table space is saved in a stub by blocking Type-4 AS summary LSAs and Type 5 external LSAs. The default setting for this command completely isolates the stub by blocking Type-3 summary LSAs that advertise the default route for destinations external to the local area or the autonomous system.

•Use the area default-costcommand to specify the cost of a default summary route sent into a stub by an ABR.

•This router supports up to 16 total areas (either normal transit areas, stubs, or NSSAs).

Example

This example creates a stub area 10.2.0.0, and assigns all interfaces with class B addresses 10.2.x.x to the stub.

Console(config-router)#area 10.2.0.0 stub Console(config-router)#network 10.2.0.0 0.255.255.255 area 10.2.0.0 Console(config-router)#

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