85You can modify settings for the system-defined user group system, but you cannot delete the usergroup.Examples# Create a user group named abc and enter user group view. system-view[Sysname] user-group abc[Sysname-ugroup-abc]Related commandsdisplay user-groupvalidity-datetimeUse validity-datetime to specify the validity period for a network access user.Use undo validity-datetime to restore the default.Syntaxvalidity-datetime start-date start-time to expiration-date expiration-timeundo validity-datetimeDefaultThe validity period for a network access user does not expire.ViewsNetwork access user viewPredefined user rolesnetwork-adminParametersstart-date: Specifies the date on which the network access user becomes effective. The date is in theformat of MM/DD/YYYY or YYYY/MM/DD. The value range for the MM argument is 1 to 12. Thevalue range for the DD argument varies with the specified month. The value range for the YYYYargument is 2000 to 2035.start-time: Specifies the time on the day when the network access user becomes effective. The timeis in the format of hh:mm:ss. The value range for the hh argument is 0 to 23. The value range for themm and ss arguments is 0 to 59. The mm and ss arguments are optional. For example, enter 1 toindicate 1:00:00. A value of 0 indicates 00:00:00.to: Specifies the expiration date and time for the network access user.expiration-date: Specifies the expiration date in the format of MM/DD/YYYY or YYYY/MM/DD. Thevalue range for the MM argument is 1 to 12. The value range for the DD argument varies with thespecified month. The value range for the YYYY argument is 2000 to 2035.expiration-time: Specifies the expiration time in the format of hh:mm:ss. The value range for the hhargument is 0 to 23. The value range for the mm and ss arguments is 0 to 59. The mm and ssarguments are optional. For example, enter 1 to indicate 1:00:00. A value of 0 indicates 00:00:00.Usage guidelinesThe expiration date and time must be later than the start date and time.Expired network access user accounts cannot be used for authentication.Examples# Specify the validity period for network access user abc.
