Which command can be used to verify whether a BGP prefix is being advertised to a specific neighbor?

The command that verifies whether a BGP prefix is being advertised to a specific neighbor is focused on the ability to check the routing information being sent specifically to that neighbor. The command that serves this purpose is the one that explicitly addresses route advertisement.

Using the command that mentions "advertising-protocol" allows network administrators to see which routes are actively being sent out to a designated neighbor. This command provides detailed insights into the route selections and advertisements that the BGP speaker is making towards a specific peer.

In networking, ensuring that the correct prefixes are being advertised is crucial for route propagation and maintaining efficient routing tables across BGP configurations. This visibility helps troubleshoot routing issues and confirm the expected behavior of BGP peering relationships.

Other commands, while useful for various BGP diagnostics, do not specifically convey advertisement statuses directly to a neighbor in the same way. For instance, the command for viewing protocol routes focuses more on local routing tables rather than how they interact with peers, and those commands do not target neighbor-specific advertisement details. Thus, the command that indicates advertising protocol specifically highlights the target of advertisement and how routing information is being disseminated in the BGP context.