Cisco Cisco IOS Software Release 12.2(27)SBC

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The BGP Dynamic Update Peer-Groups feature introduces a new algorithm that dynamically calculates 
and optimizes update-groups of neighbors that share the same outbound policies and can share the same 
update messages. In previous versions of Cisco IOS software, Border Gateway Protocol (BGP) update 
messages were grouped together based on peer-group configurations. This method of grouping updates 
limited outbound policies and specific-session configurations. The BGP Dynamic Update Peer-Group 
feature separates update-group replication from peer-group configuration, which improves convergence 
time and flexibility of neighbor configuration.

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12.0(24)S

This feature was introduced.

12.2(18)S

This feature was integrated in Cisco IOS Release 12.2(18)S. 

12.3(4)T

This feature was integrated in Cisco IOS Release 12.3(4)T. 

12.2(27)SBC

This feature was integrated in Cisco IOS Release 12.2(27)SBC.