i would like connect two or more switches to a single computer so that i don't have to connect each switches for giving commands for changing the configuration.
of course, you can use telnet or better -more secure- ssh to control all devices on the network. as long as they are set up and can be reachable (ping ok, no acl)
If remote access to the switches is adequate then @Martin L is quite right that telnet or SSH would allow a single PC to access multiple switches. If you want console access then there would be an option to get a terminal server which could have multiple console connections and the single PC would connect to the terminal server and through the terminal server could access consoles of multiple switches.
HTH
Rick
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