> # Guidelines and Limitations

> Before scheduling jobs on a Cisco MDS 9000 switch, note the following guidelines:

> - Prior to Cisco MDS SAN-OS Release 3.0(3), only users local to the switch could perform scheduler configuration. As of Cisco MDS SAN-OS Release 3.0(3), remote users can perform job scheduling using AAA authentication.
> - Be aware that the scheduled job can fail if it encounters one of the following situations when executing the job:
> - If the license has expired for a feature at the time when a job containing commands pertaining to that feature is scheduled.
> - If a feature is disabled at the time when a job containing commands pertaining to that feature is scheduled.
> - If you have removed a module from a slot and the job has commands pertaining to the interfaces for that module or slot.
> - Verify that you have configured the time. The scheduler does not have any default time configured. If you create a schedule and assign job(s) and do not configure the time, that schedule is not launched.
> - While defining a job, verify that no interactive or disruptive commands (for example, copy bootflash: file ftp: URI, write erase, and other similar commands) are specified as part of a job because the job is executed noninteractively at the scheduled time.

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