The rerouting function enables MPLS TE to re-select another path for LSP reestablishment in the case that the original path fails. This section describes how to disable it.
If an LSP path fails, the LSP goes Down. The rerouting function allows MPLS TE to re-select another available path for LSP establishment. However, this may cause traffic congestion on the re-selected path. In this situation, run the mpls te reroute disable command to disable the rerouting function. The path over which the Up LSP is established then functions as a constraint path. Even if the path fails, MPLS TE still uses it for LSP reestablishment. However, manual intervention (for example, manually modifying the LSP configuration or triggering LSP rerouting) will delete the constraint path. After a new LSP goes up, the new LSP path serves as the new constraint path.
The system view is displayed.
The tunnel interface view of the tunnel to be established is displayed.
The rerouting function is disabled.
The configuration is committed.
Run the display mpls te tunnel-interface command to check the tunnel interface information on the local node.
Run the display mpls te tunnel locked-path command to check the locked path attributes of a TE tunnel on the local node.