To configure the router, including the routing protocols, router interfaces, network management, and user access, you enter a separate mode called configuration mode. Do this by issuing the configure operational mode command. Table 5.7 describes the commands available in configuration mode.
In configuration mode, the prompt is a #. The portion of the prompt in braces, , is a banner that shows your location in the statement hierarchy. When you first enter configuration mode, you always are at the top level of the hierarchy, which is indicated by the  banner.
|activate||Remove the inactive: tag from a statement, effectively adding the statement or identifier ...|