Loop-Free Alternative (LFA) Fast Reroute (FRR)
You can calculate LFA per prefix or per link. The explanation is here:
Difference between per-prefix LFA and per-link based LFA
Here is an overview of (routing) protocols with LFA FRR support:
You can calculate LFA per prefix or per link. The explanation is here:
Difference between per-prefix LFA and per-link based LFA
Here is an overview of (routing) protocols with LFA FRR support: