Symptom
Backup-path not present after trigger link flap.
Before the trigger:
RP/0/RP0/CPU0:513E.B.39-NCS-5501-1#show ospf 1 routes flex-algo 128 6.6.6.6/32 backup-path
Tue Feb 27 23:51:53.035 UTC
Route Table of ospf-1 with router ID 1.1.1.1 (VRF default)
Algorithm 128
6.6.6.6/32, Metric 2201, SID 600, Label 16600
12.12.12.2, from 6.6.6.6, via TenGigE0/0/0/0
Backup path:
15.15.15.5, from 6.6.6.6, via TenGigE0/0/0/1,
Attributes: Metric: 3134, Downstream, Node Protect, Interface Disjoint, SRLG Disjoint
RP/0/RP0/CPU0:513E.B.39-NCS-5501-1#
After trigger:
RP/0/RP0/CPU0:513E.B.39-NCS-5501-1#show ospf 1 routes flex-algo 128 6.6.6.6/32 backup-path
Tue Feb 27 23:50:46.558 UTC
Route Table of ospf-1 with router ID 1.1.1.1 (VRF default)
Algorithm 128
6.6.6.6/32, Metric 2201, SID 600, Label 16600
12.12.12.2, from 6.6.6.6, via TenGigE0/0/0/0
RP/0/RP0/CPU0:513E.B.39-NCS-5501-1#
Conditions
SR TI-LFA on flex-algo non 0. There is no issue with algo 0.
