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Automatic Autobandwidth Adjustment Failed Event


LSP Event

Autobw adjustment failed

Sample Output 1

Sample Output 2


This LSP event indicates that a periodic (timer-based) autobandwidth adjustment for the LSP is triggered at the end of the adjust interval. The adjustment fails, and the LSP stays up on the existing path with its current bandwidth.


Adjustment failure may be due to a path CSPF computation failure with the adjust bandwidth or a signaling failure on the new path.

At the end of the time interval specified at the [edit protocols mpls label-switched-path auto-bandwidth] hierarchy level, the current maximum average bandwidth usage is compared to the allocated bandwidth for the LSP. If the LSP needs more bandwidth, an attempt is made to set up a new path where bandwidth is equal to the current maximum average usage. If the attempt is successful, the LSP's traffic is routed through the new path and the old path is removed. If the attempt fails, the LSP continues to use its current path.


Take action appropriate to the situation:

  • Verify the MPLS and RSVP configuration on all available paths to the LSP endpoint.

  • Check available bandwidth on alternate paths using the show rsvp interface command. If not enough bandwidth is available on any available paths, adjust the minimum-bandwidth parameter for the LSP in order to establish or adjust the priority to allow the LSP to preempt another LSP of lesser priority. For an LSP to be preempted, its hold priority must be lower than the LSP you are trying to establish.