 | Copyright © 2009, Juniper Networks, Inc. All rights reserved. Trademark Notice. | |
Stub areas are areas through which or into which AS external advertisements are not flooded. You might want to create stub areas when much of the topological database consists of AS external advertisements. Doing so reduces the size of the topological databases and therefore the amount of memory required on the internal routers in the stub area.
When an area border router is configured for a stub area, the router automatically advertises a default route in place of the external routes that are not being advertised within the stub area so that routers in the stub area can reach destinations outside the area.
The following restrictions apply to stub areas: you cannot create a virtual link through a stub area, and a stub area cannot contain an AS boundary router.
| Copyright © 2009, Juniper Networks, Inc. All rights reserved. Trademark Notice. | |