Specifications

line console speed
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while login authentication for a user who is trying to log in from CONSOLE
(RS-232C) is in progress, the authentication might fail.
 For login to the Switch from CONSOLE (RS-232C) and via Telnet, if the Telnet side
changes the communication speed with this command and then logs out, the
CONSOLE (RS-232C) communication speed also changes, disabling
communication from CONSOLE (RS-232C).
 Executing the
show running-config command does not display this command
setting. Executing the
show system command will display the saved setting in the
System Setting item.