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Hierarchy Level


Configure an auto-bandwidth template to define parameters that measure the available bandwidth and periodically trigger updates to RSVP and IGP. You can configure this option both at the IS-IS protocol level or at the IS-IS interface level.

Traffic samples are collected periodically at each statistics interval and the average SPRING bandwidth utilization is calculated. If this average value increases beyond the configured adjust threshold percentage, that is the last reported SPRING bandwidth, then RSVP adjusts the subscription percentage accordingly. which might cause RSVP LSP preemption, IGP updates, and further re-routing of RSVP LSPs. However, if the SPRING bandwidth utilization drops below the configured threshold, the RSVP subscription percentage is modified to reflect the increase. You can configure parameters such as the threshold, the collection interval, and the adjust interval as per your requirements.


Configure the adjust-interval and statistics-interval options appropriately to avoid scaling issues. You can fine tune these values based on route and label-switched path (LSP) scale.


template name

Specify an auto-bandwidth template name with a maximum length of 64 characters.


Specify the time interval after which the average bandwidth utilization is measured.

  • Range: 30 through 3600 seconds

  • Default: 900 seconds


Specify the percentage change threshold after which an action is triggered.

  • Range: 0 through 100 percent

  • Default: 10 percent


Specify the threshold for RSVP subscription in percentage.

  • Range: 0 through 200 percent

  • Default: 100 percent


Specify the time interval after which the traffic statistics is collected from the line cards.

  • Range: 10 through 300 seconds

  • Default: 60 seconds

Required Privilege Level

routing—To view this statement in the configuration.

routing-control—To add this statement to the configuration.

Release Information

Statement introduced in Junos OS Release 17.3R1.