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    mpls reoptimize timers frequency


    mpls [ traffic-eng ] reoptimize timers frequency seconds

    no mpls [ traffic-eng ] reoptimize timers frequency

    Release Information

    Command introduced before JunosE Release 7.1.0.


    Specifies the frequency at which existing LSPS are checked for better paths. RSVP-TE adds a random number in the range 0–60 seconds to the specified value to prevent all LSPs from being reoptimized simultaneously. The no version restores the default value, 3600 seconds.

    Note: Low timer values lead to frequent reoptimization of LSPs, which is undesirable for the following reasons:

    • Frequent changes to the LSPs increases packet loss.
    • Frequent reoptimization increases the load on the router, especially when the router acts as the LSP head end. The load is particularly noticeable in a scaled network, resulting in high CPU utilization on the router.


    • traffic-eng—Specifies optional keyword for compatibility with non–E Series implementations
    • seconds—Number of seconds in the range 0–604800; a value of zero means that no reoptimization is performed


    Global Configuration

    Published: 2014-08-14