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### Instruction:
What is the purpose of the MPLS TE FRR backup bandwidth protection feature?
### Response:
The MPLS TE FRR backup bandwidth protection feature extends the bandwidth protection concept to backup tunnels. It ensures that backup tunnels configured for bandwidth protection have a bandwidth guarantee and do not use bandwidth needed for primary tunnels. This avoids oversubscription on the backup path and ensures that FRR can always redirect traffic successfully.
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