Kyze Guti Lv2Posted 17 Oct 2022 11:37
  
When a primary path breaks, LFA Fast Reroute enables OSPF to swiftly move to a backup link. When the primary path breaks without LFA FRR, OSPF must restart SPF to locate a new path. OSPF pre-calculates a backup path when using LFA FRR, and it puts the backup next hop in the forwarding table.

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