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Cisco Bug: CSCvt04478 - 5508 663 BFD BLB session flaps when OIR LC thats not hosting the session

Last Modified

Feb 19, 2020

Products (1)

  • Cisco Network Convergence System 5500 Series

Known Affected Releases

6.6.3.BASE

Description (partial)

Symptom:
ON LOCAL DUT NCS5500 we see that the BFD session flaps on BLB when we reload location 0/0/CPU0 even though the BFD session is hosted on 0/1/CPU0

 LC/0/1/CPU0:Feb 12 21:47:16.993 UTC: bfd_agent[226]: %L2-BFD-6-SESSION_STATE_DOWN : BFD session to neighbor 10.5.16.2 on interface Bundle-Ether601.401 has gone down. Reason: Control timer expired

RP/0/RP0/CPU0:Feb 12 21:47:16.997 UTC: ospf[1029]: %ROUTING-OSPF-5-ADJCHG : Process 21928, Nbr 10.184.1.6 on Bundle-Ether601.401 in area 0 from FULL to DOWN, Neighbor Down: BFD session down, vrf default vrfid 0x60000000

Conditions:
RP/0/RP0/CPU0:NCS5K3-ORCWST42#sh bfd session interface be601.401 detail
Wed Feb 12 21:46:24.200 UTC
I/f: Bundle-Ether601.401, Location: 0/1/CPU0

sysadmin-vm:0_RP0# hw-module location 0/0 reload
Wed Feb 12 21:47:14.891 UTC+00:00
Reload hardware module ? [no,yes] yes
result Card graceful reload request on 0/0 succeeded.
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