4. Some Usage Restrictions

Dieser Abschnitt bewahrt den RFC-Text zum ietf-schedule YANG model, einschliesslich recurrence groupings, iCalendar-like rules, schedule status groupings, DISMAN-SCHEDULE-MIB relationship, IANA registrations, YANG/XML examples und scheduled resource examples.

Originaler RFC-Text

4.  Some Usage Restrictions

   There are some restrictions that need to be followed when using
   groupings defined in the "ietf-schedule" YANG module (Section 3.3):

   *  The instant in time represented by "period-start" MUST be before
      the "period-end" for the "period-of-time" grouping
      (Section 3.3.2).

   *  The combination of the day, month, and year represented for date
      and time values MUST be valid.  See Section 5.7 of [RFC3339] for
      the maximum day number based on the month and year.

   *  Unless deployed in contexts where time synchronization is not
      subject to leap second adjustments (e.g., Section 4.3 of [NTPv5]),
      the second for date and time values SHOULD have the value "60" at
      the end of months in which a leap second occurs.

   *  Schedules received with a starting time in the past with respect
      to current time SHOULD be ignored.  When a local policy is
      provided, an implementation MAY omit the past occurrences and
      start immediately (e.g., for a period-based schedule) or start
      from the date and time when the recurrence pattern is first
      satisfied from the current time (e.g., for a recurrence-based
      schedule).