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    Understanding Time-Based Calendaring for Label-Switched Paths

    You can use time-based calendaring to schedule the setup, modification, and tear down of label-switched paths (LSPs) based on anticipated changes in LSP requirements over time. You can schedule an LSP as a one-time event or recurring daily event for a specified period of time to schedule setup, modification, and tear down of LSPs based on the traffic load, bandwidth, and setup and hold priority requirements of your network over time, where the time reference is the server time. The scheduling of an LSP is configured on the primary path, and the scheduled time applies to all paths (primary, secondary, and standby).

    The following restrictions apply when using time-based calendaring to create, modify, and tear down LSPs:

    • You can use time-based calendaring to schedule LSP changes on PCE-initiated and PCC-delegated LSPs, but not on PCC controlled LSPs. When using time-based calendaring on PCC-delegated LSPs, the LSP is never deleted, but when the LSP’s time period expires, the bandwidth is set to 0, and no additional parameters are applied.
    • When using time-based calendaring to schedule LSP changes, you cannot change the LSP (tunnel) name, endpoints, or both the LSP name and endpoints.

    Note:

    The following restrictions apply to explicit route path parameters:

    • You cannot change the explicit route or dynamic route of the primary path, secondary path, or standby path.
    • To create a different explicit path for the secondary or standby LSP, you must specify a different name for the LSP.

    The following options are supported for time-based calendaring of LSPs:

    • One-time not scheduled (Scheduled: No)—The LSP is created.
    • One-time scheduling (Scheduled: Once)—The LSP is created at the specified Start Time and deleted at the specified End Time.
    • Daily scheduling (Scheduled: Daily)—On each day, between the Start date and End date, the LSP is created at the Start Time and deleted at the End Time.
    • Multiple single scheduling (Scheduled : Once + Multiperiod)—The LSP is created at the Start Time and deleted at the End Time. With multiperiod enabled, multiple entries with different Start Time, End Time, and LSP parameters are allowed.
    • Multiple daily scheduling (Scheduled : Daily + Multiperiod)— On each day, between the Start Date and End Date, the LSP is created at Start Time and deleted at End Time. Several entries with different Start Date, End Date, Start Time, End Time, and Path parameters are allowed.

    With multiperiod scheduling, you can configure overlapping time periods for a given path, in which case the following behaviors apply:

    • The primary path is modified but not deleted.
    • The secondary and standby paths are modified if they have the same path name; otherwise, they are deleted or added.
    • The End Time used is the time specified in the last scheduled time that started. For example, if the first tunnel is scheduled from 10:00 AM–3:00 PM and a second tunnel is scheduled from 11:00 AM–2:00 PM, the End Time for the multiperiod is 2:00 PM.

    Modified: 2016-04-28