IS-IS and OSPF Support for Loop-Free Alternate Calculation
Page 564 7450 ESS MPLS Guide
An LFA SPF policy allows the user to apply specific criteria, such as admin group and SRLG
constraints, to the selection of a LFA backup next-hop for a subset of prefixes that resolve to a
specific primary next-hop. See more details in the section titled “Loop-Free Alternate Shortest
Path First (LFA SPF) Policies” in the Routing Protocols Guide.
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