Quick Reference Guide

OSPF Commands | 427
area stub
This command creates a stub area for the specified area ID. A stub area is characterized by the fact that
AS External LSAs are not propagated into the area. Removing AS External LSAs and Summary LSAs
can significantly reduce the link state database of routers within the stub area.
The no version of this command deletes a stub area for the specified area ID.
Syntax
area areaid stub
Mode
Router OSPF Config
area stub summarylsa
This command configures the Summary LSA mode for the stub area identified by areaid. The
Summary LSA mode is configured as enabled.
The no version of this command configures the default Summary LSA mode for the stub area
identified by
areaid.
Syntax
[no] area areaidustubusummarylsa
Default
disabled
Mode
Router OSPF Config
area virtual-link
This command creates the OSPF virtual interface for the specified areaid and neighbor. The neighbor
parameter is the Router ID of the neighbor.
The no version of this command deletes the OSPF virtual interface from the given interface, identified
by areaid and neighbor. The neighbor parameter is the Router ID of the neighbor.
Syntax
[no] area areaid virtual-link neighbor
Mode
Router OSPF Config
area virtual-link authentication
This command configures the authentication type and key for the OSPF virtual interface identified by
areaid and neighbor.
Syntax
area areaid virtual-link neighbor authentication {none | {simple key} | {encrypt key keyid}}
The neighbor parameter is the Router ID of the neighbor.
The authentication type is either none (the default), simple, or encrypt.