BSCI Exam Cram™ 2 (Exam 642-801)

BGP Peering Functions with Peer Groups and Communities

BGP peer groups are administrative units that are deployed to simplify the maintenance of several BGP routers. Technically speaking, a peer group must consist of two or more BGP neighbor routers. BGP peers in a peer group have identical update policies and are administered as a single entity. Because all peer group members inherit all peer group settings, you might create one routing update policy and apply it to a peer group rather than configure a routing policy for each individual peer router. After you have properly configured a peer group, all changes on one member router will be dynamically applied to all the BGP routers within the peer group. Each member of the peer group routinely ...