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MPLS CSPF Events

Problem

This table provides links and commands that describe Constrained Shortest Path First (CSPF) events that occur in the output of the show mpls lsp extensive command, including sample output of the label-switched path (LSP) event, an explanation of what the event means, the possible cause of the event, and any possible actions that you can take to remedy the situation. (See Table 8.)

Solution

Table 8: MPLS CSPF Events

Understanding CSPF Events Tasks

Possible Action or Command
Displaying CSPF Events

show mpls lsp extensive
  1. CSPF Failed: No Route Toward Event

show ted database detail

Determine if there is a route to the destination.

[edit protocols mpls label-switched-path lsp-path-name]
no-cspf

  1. CSPF: Link Down/Deleted Event

Investigate possible causes for the link failure.

  1. CSPF: Computation Result Accepted Event

Not applicable.
  1. CSPF: Computation Result Ignored Event

Not applicable.
  1. CSPF: Could Not Determine Self Event

Take appropriate action:

  • Enable traffic engineering
  • Configure the family iso statement or address statement
  • Include interfaces at the [edit interfaces], [edit protocols mpls], or [edit protocols isis] hierarchy level
  1. CSPF: Can't Find Non-Overlapping Path Event

Not applicable.
  1. CSPF: Reroute Due to Re-Optimization Event

Not applicable.
  1. Retry Limit Exceeded Event

clear mpls lsp
  1. CSPF Failed: Empty Route Event

Enter the correct IP address at the [edit protocols mpls label-switched-path lsp-path-name] hierarchy level.

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