What is the purpose of BGP peer groups?
- used for SHA authentication between BGP peers
- used for IBGP multihop
- used for IGP redistribution
- used as a configuration template when multiple BGP peers are configured
Explanation: A BGP peer group serves as a configuration template for multiple peers that share identical parameters, such as route maps, prefix lists, or AS-path filters. Beyond simplifying management, peer groups reduce CPU utilization because the router generates a single update for the group leader and replicates it to all members, rather than processing updates individually for every neighbor.
Related exam: Checkpoint Exam: Layer 3 Technologies – BGP
