operational mode 操作模式

　　> ?

　　Possible completions:

　　clear                Clear information in the system

　　configure            Manipulate software configuration information

　　file                 Perform file operations

　　help                 Provide help information

　　monitor              Show real-time debugging information

　　mtrace               Trace multicast path from source to receiver

　　op                   Invoke an operation script

　　ping                 Ping remote target

　　quit                 Exit the management session

　　request              Make system-level requests

　　restart              Restart software process

　　set                  Set CLI properties, date/time, craft interface message

　　show                 Show system information

　　ssh                  Start secure shell on another host

　　start                Start shell

　　telnet               Telnet to another host

　　test                 Perform diagnostic debugging

　　traceroute           Trace route to remote