area stub

Parameters

area‐id

Specifies the area from which routes are to be summarized. This is a

 

decimal value from 0 to 429496295.

 

 

ip‐address

Specifies the IP address associated with the area ID.

 

 

ip‐mask

Specifies the mask for the IP address.

 

 

advertise no‐

(Optional) Enters address range in advertise mode, or do not advertise

advertise

mode.

 

 

Defaults

If not specified, advertise mode will be set.

Mode

Router configuration: C3(su)‐>router(Config‐router)#

Example

This example shows how to define the address range as 172.16.0.0/16 for summarized routes from area 0.0.0.8:

C3(su)->router(Config)#router ospf 1 C3(su)->router(Config-router)#area 0.0.0.8 range 172.16.0.0 255.255.0.0

area stub

Use this command to define an OSPF area as a stub area. This is an area into which Autonomous System external ASAs will not be flooded. The no form of this command changes the stub back to a plain area.

Syntax

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

Parameters

area‐id

Specifies the stub area. Valid values are decimal values or ip addresses.

no‐summary (Optional) Prevents an Area Border Router (ABR) from sending Link State Advertisements (LSAs) into the stub area. When this parameter is used, it means that all destinations outside of the stub area are represented by means of a default route.

Mode

Router configuration: C3(su)‐>router(Config‐router)#

Defaults

If no‐summary is not specified, the stub area will be able to receive LSAs.

20-22 IPv4 Routing Protocol Configuration

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Enterasys Networks 9034313-07 manual Area stub, Advertise no‐, If not specified, advertise mode will be set