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### Instruction:
What is the purpose of the MPLS TE FRR backup tunnel preemption feature?
### Response:
The MPLS TE FRR backup tunnel preemption feature allows a backup tunnel with a higher setup priority to preempt an existing backup tunnel with a lower hold priority. This ensures that higher priority backup tunnels can be established even if lower priority tunnels are consuming the backup resources. It provides a way to prioritize critical backup tunnels.
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