Elements of the Command-Line Interface
Figure 4 shows elements of the command-line interface in operational mode.
Figure 5 shows elements of the command-line interface in configuration mode. In configuration mode, the prompt changes from a > to a #.
The portion of the prompt in square brackets, , is a banner. The banner indicates that you are in configuration mode and shows your location in the statement hierarchy. When you first enter configuration mode, you are always at the top level of the hierarchy, as indicated by the  banner. (See Figure 6.)