Cisco Cisco IOS Software Release 12.2(25)SEC

 lists the release history for this feature.

Not all commands may be available in your Cisco IOS software release. For release information about a 
specific command, see the command reference documentation.

Use Cisco Feature Navigator to find information about platform support and software image support. 
Cisco Feature Navigator enables you to determine which Cisco IOS and Catalyst OS software images 
support a specific software release, feature set, or platform. To access Cisco Feature Navigator, go to 

. An account on Cisco.com is not required.

 lists only the Cisco IOS software release that introduced support for a given feature in a given 

Cisco IOS software release train. Unless noted otherwise, subsequent releases of that Cisco IOS 
software release train also support that feature.

CCVP, the Cisco Logo, and the Cisco Square Bridge logo are trademarks of Cisco Systems, Inc.; Changing the Way We Work, Live, Play, and Learn 
is a service mark of Cisco Systems, Inc.; and Access Registrar, Aironet, BPX, Catalyst, CCDA, CCDP, CCIE, CCIP, CCNA, CCNP, CCSP, Cisco, 
the Cisco Certified Internetwork Expert logo, Cisco IOS, Cisco Press, Cisco Systems, Cisco Systems Capital, the Cisco Systems logo, Cisco Unity, 
Enterprise/Solver, EtherChannel, EtherFast, EtherSwitch, Fast Step, Follow Me Browsing, FormShare, GigaDrive, GigaStack, HomeLink, Internet 
Quotient, IOS, iPhone, IP/TV, iQ Expertise, the iQ logo, iQ Net Readiness Scorecard, iQuick Study, LightStream, Linksys, MeetingPlace, MGX, 
Networking Academy, Network Registrar, Packet, PIX, ProConnect, RateMUX, ScriptShare, SlideCast, SMARTnet, StackWise, The Fastest Way to 
Increase Your Internet Quotient, and TransPath are registered trademarks of Cisco Systems, Inc. and/or its affiliates in the United States and certain 
other countries. 

All other trademarks mentioned in this document or Website are the property of their respective owners. The use of the word partner does not imply
a partnership relationship between Cisco and any other company. (0612R)

Any Internet Protocol (IP) addresses used in this document are not intended to be actual addresses. Any examples, command display output, and
figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses in illustrative content is unintentional and
coincidental.

© 2004–2005, 2007 Cisco Systems, Inc. All rights reserved

Area Command in Interface Mode for OSPFv2

12.0(29)S
12.3(11)T
12.2(1)SB
12.2(33)SRB

This document describes how to enable Open Shortest Path 
First version 2 (OSPFv2) on a per-interface basis to 
simplify the configuration of unnumbered interfaces. The ip 
ospf area command allows you to enable OSPFv2 explicitly 
on an interface. The ip ospf area command is an alternative 
to enabling OSPFv2 through the address of the interface 
that matches the address range specified by the network 
area command.