RIPE Border Gateway Protocol (BGP) Security Practice Test

In BGP on most IOS devices, you enter BGP configuration mode from global configuration mode by issuing the command router bgp <AS-number>. This places you into the BGP router configuration context where you define neighbors, networks, route maps, and policies. The option that matches this practice uses the router bgp syntax with the autonomous system number specified inside global config, which is why it’s the best choice. The other options aren’t valid: there is no bgp config enter command, you don’t enable BGP from interface mode, and simply typing router bgp without the AS number isn’t the correct way to enter BGP configuration in most environments.