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Cisco Bug: CSCvu96077 - TI-LFA backup path missing

Last Modified

Oct 09, 2020

Products (1)

  • Cisco ASR 9000 Series Aggregation Services Routers

Known Affected Releases


Description (partial)

ISIS does not have TI-LFA backup path for a prefix, even though it's expected to have one.

The command "show isis fast-reroute <prefix>" displays "No FRR backup"

Problem can only happen on a router configured with both L1 and L2 levels (ABR).

Trigger could be a change in the topology that is affecting both L1 & L2
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