Running the telnet command in Windows 7

I once needed to telnet to the client's blade Fibre Channel switch module for configuration, but when I turned on the CMD input telnet command that comes with Windows 7, the system prompts me "not internal or external commands. It is not a runnable program or batch.".

My first feeling is that the CMD function has failed, so I tried the ping command again. The strange thing is that the ping function can be used normally.

At this time, I thought that this feature may not be enabled on telnet on Windows 7.

Then open the "Control Panel", find the program and function, and then click "Open or close the Windows function" in the upper left, it will pop up the Windows function dialog box, there are many small Windows functions in this dialog box. Then find the Telent ClIEnt, check it and confirm it!