Under which hierarchy do you configure BGP neighbors?

Configuring BGP (Border Gateway Protocol) neighbors is performed under the hierarchy of [edit protocols bgp]. This is because BGP is categorized as a routing protocol, and within the Junos OS configuration hierarchy, each routing protocol has its specific block where settings and parameters are defined. When you enter this hierarchy, you can specify various aspects of BGP operation, including neighbor definitions, local AS numbers, and other configurations critical for the establishment and maintenance of BGP sessions.

Selecting this specific hierarchy ensures that the configuration is appropriately applied to BGP operations, providing the necessary foundation for BGP routing, such as setting up peer relationships with other BGP routers and defining attributes that impact routing decisions. The organizational structure of Junos OS allows network administrators to maintain clarity and separation between different functionalities, making it easier to manage complex networking configurations. Other hierarchies such as interfaces, routing-options, or policy-options belong to different aspects of the configuration not directly related to BGP neighborship setup.