Symptom
After LDP flap, BGP-LU rLDI leaf_mpls will be stuck in "0" (and will never be set back to "1").
RP/0/RSP0/CPU0:XR#show cef 72.31.201.2/32 hardware ingress detail location 0/3/CPU0 | i "PW|mpls"
Sun Dec 12 21:25:28.740 PST
PW-HE rLDI HW data for path 0 [index: 0x3ef9 (BE)] (common to all NPs):
ext_lspa: 0 leaf_ip: 1 leaf_mpls: 0
RP/0/RSP0/CPU0:XR#
Conditions
1. PW-HE flag is set in BGP-LU rLDI
2. Have an event that triggers igp prefix to go from labeled to unlabeled to labeled, here the expected behavior for leaf_mpls is to be set to "1" (labeled) ->"0" (unlabeled) ->"1" (labeled) however leaf_mpls will be stuck in "0".
Workaround
- Reload the affected line card.
Further Problem Description
