Cisco Cisco IOS Software Release 12.4(15)T
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OSPF Mechanism to Exclude Connected IP
Prefixes from LSA Advertisements
Prefixes from LSA Advertisements
First Published: June 28, 2007
Last Updated: June 28, 2007
Last Updated: June 28, 2007
This document describes the Open Shortest Path First (OSPF) mechanism to exclude IP prefixes of
connected networks from link-state advertisements (LSAs). When OSPF is deployed in large networks,
limiting the number of IP prefixes that are carried in the OSPF LSAs can speed up OSPF convergence.
connected networks from link-state advertisements (LSAs). When OSPF is deployed in large networks,
limiting the number of IP prefixes that are carried in the OSPF LSAs can speed up OSPF convergence.
This feature can also be utilized to enhance the security of an OSPF network by allowing the network
administrator to prevent IP routing toward internal nodes.
administrator to prevent IP routing toward internal nodes.
Finding Feature Information in This Module
Your Cisco IOS software release may not support all of the features documented in this module. To reach
links to specific feature documentation in this module and to see a list of the releases in which each feature is
supported, use the
links to specific feature documentation in this module and to see a list of the releases in which each feature is
supported, use the
.
Finding Support Information for Platforms and Cisco IOS and Catalyst OS Software Images
Use Cisco Feature Navigator to find information about platform support and Cisco IOS and Catalyst OS
software image support. To access Cisco Feature Navigator, go to
software image support. To access Cisco Feature Navigator, go to
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