Sau khi đảm bảo mạng là rõ ràng, máy tính sẽ gửi một gói tin vào mạng cho tất cả các máy tính khác biết rằng nó có ý định để truyền dữ liệu. Các máy tính sau đó gửi dữ liệu của nó. Thực tế là một máy tính dự địnhBây giờ, bạn có thể tự hỏi, | PART II R outer Design and Basic Configuration CHAPTER 9 Working with the Cisco IOS FIGURE You can get help in any of the router modes type and then press Enter. FIGURE You can get help on specific commands. After providing help on the specific command the command itself is automatically retyped for you at the command prompt see Figure . You can then add specific parameters to the command and press Enter to execute it. For example in the case of the show command you can add version to the command and then press Enter. Parameters related to IOS currently installed on the router will be displayed on the screen see Figure . 148 PART II Router Examination Commands CHAPTER 9 FIGURE Use the Help system to correctly enter a particular command. 1 Help information 3 Completed command 3 Results of command As stated before the help system is also available in the Privileged and Configuration modes. The Privileged mode help is similar to that found in the User mode. You can receive general help by typing or more specific help by typing a command followed by . Figure shows the Help screen for the Privileged mode. Notice that it provides a larger number of commands than the User mode which makes sense because the Privileged mode is a passwordprotected mode that provides greater access to the router . You can also get help in the Configuration mode. For example you may be in the middle of configuring a particular router interface and would like to see a list of subcommands available. Type at the configure interface prompt and you will receive a list of available commands as shown in Figure . How to get more When theinformation provided by a particular command such as doesn t fit on one console screen More will appear at the bottom of the displayed information. To move down through the additional information press Enter to advance one line and press the Spacebar to advance one screen. In cases where you don t want to view more information and want to .
