Cisco Cisco IOS Software Release 12.2(14)S

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The BGP Prefix-Based Outbound Route Filtering feature uses Border Gateway Protocol (BGP) 
outbound route filter (ORF) send and receive capabilities to minimize the number of BGP updates that 
are sent between BGP peers. Configuring this feature can help reduce the amount of system resources 
required for generating and processing routing updates by filtering out unwanted routing updates at the 
source. For example, this feature can be used to reduce the amount of processing required on a router 
that is not accepting full routes from a service provider network. 

Use Cisco Feature Navigator to find information about platform support and Cisco IOS software image 
support. Access Cisco Feature Navigator at 

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Cisco.com. If you do not have an account or have forgotten your username or password, click Cancel at 
the login dialog box and follow the instructions that appear. 

12.0(11)ST

This feature was introduced.

12.2(4)T

This feature was integrated into Cisco IOS Release 12.2(4)T.

12.2(14)S

This feature was integrated into Cisco IOS Release 12.2(14)S.

12.0(22)S

This feature was integrated into Cisco IOS Release 12.0(22)S.