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Cisco Bug: CSCvh72667 - Sometimes BGP process crash causes ospf neighbor flapping

Last Modified

Jan 30, 2018

Products (1)

  • Cisco IOS XRv Router

Known Affected Releases

6.1.4.BASE

Description (partial)

Symptom:
1. Execute "process crash bgp location 0/RP0/CPU0 "
2. Sometimes OSPF neighbor will be flapping 
RP/0/RP0/CPU0:XRv9K-vRR01#process crash bgp location 0/RP0/CPU0 
Sun Jan 21 08:11:49.125 EST
RP/0/RP0/CPU0:Jan 21 08:11:49.219 : sysmgr_control[69370]: %OS-SYSMGR-4-PROC_CRASH_NAME : User juhan2 (vty0) requested a crash of process bgp at 0/RP0/CPU0 
RP/0/RP0/CPU0:Jan 21 08:11:49.219 : processmgr[51]: %OS-SYSMGR-4-WARNING : Sending signal 11 to bgp jid=1048/pid=26351  
RP/0/RP0/CPU0:XRv9K-vRR01#RP/0/RP0/CPU0:Jan 21 08:11:49.486 : dumper[69464]: %OS-SYSLOG-6-LOG_INFO : Dumping core /misc/scratch/core/bgp_26351.by.11.20180121-081149.xr-vm_node0_RP0_CPU0.07eda.core.gz 
RP/0/RP0/CPU0:Jan 21 08:11:54.259 : tcp[204]: %OS-MMAP_PEER-6-RECV : Failed to recv mmap reply for process 5236 from 26351: Resource temporarily unavailable 
RP/0/RP0/CPU0:Jan 21 08:11:59.311 : netio[251]: %OS-MMAP_PEER-6-RECV : Failed to recv mmap reply for process 4389 from 26351: Resource temporarily unavailable 
RP/0/RP0/CPU0:Jan 21 08:11:59.312 : bfd_agent[395]: %L2-BFD-6-SESSION_STATE_DOWN : BFD session to neighbor 69.82.15.115 on interface GigabitEthernet0/0/0/1 has gone down. Reason: Control timer expired 
RP/0/RP0/CPU0:Jan 21 08:11:59.354 : bfd_agent[395]: %L2-BFD-6-SESSION_STATE_DOWN : BFD session to neighbor 69.82.15.113 on interface GigabitEthernet0/0/0/0 has gone down. Reason: Nbor signalled down 

RP/0/RP0/CPU0:XRv9K-vRR01#RP/0/RP0/CPU0:Jan 21 08:12:03.931 : ospf[1018]: %ROUTING-OSPF-5-ADJCHG : Process 1, Nbr 11.31.112.20 on GigabitEthernet0/0/0/1 in area 0.5.0.0 from FULL to DOWN, Neighbor Down: BFD session down, vrf default vrfid 0x60000000 
RP/0/RP0/CPU0:Jan 21 08:12:06.865 : ospf[1018]: %ROUTING-OSPF-5-ADJCHG : Process 1, Nbr 11.31.112.19 on GigabitEthernet0/0/0/0 in area 0.5.0.0 from FULL to DOWN, Neighbor Down: BFD session down, vrf default vrfid 0x60000000 
RP/0/RP0/CPU0:Jan 21 08:12:06.947 : ospf[1018]: %ROUTING-OSPF-4-NONEIGHBOR : Received database description from unknown neighbor 11.31.112.19, vrf default vrfid 0x60000000 
RP/0/RP0/CPU0:Jan 21 08:12:10.037 : ospf[1018]: %ROUTING-OSPF-5-ADJCHG : Process 1, Nbr 11.31.112.20 on GigabitEthernet0/0/0/1 in area 0.5.0.0 from DOWN to INIT, Received Hello, vrf default vrfid 0x60000000 
RP/0/RP0/CPU0:Jan 21 08:12:10.037 : ospf[1018]: %ROUTING-OSPF-5-ADJCHG : Process 1, Nbr 11.31.112.20 on GigabitEthernet0/0/0/1 in area 0.5.0.0 from INIT to 2WAY, 2-Way Received, vrf default vrfid 0x60000000 
RP/0/RP0/CPU0:Jan 21 08:12:10.037 : ospf[1018]: %ROUTING-OSPF-5-ADJCHG : Process 1, Nbr 11.31.112.20 on GigabitEthernet0/0/0/1 in area 0.5.0.0 from 2WAY to EXSTART, AdjOK?, vrf default vrfid 0x60000000 
RP/0/RP0/CPU0:Jan 21 08:12:10.052 : ospf[1018]: %ROUTING-OSPF-5-ADJCHG : Process 1, Nbr 11.31.112.20 on GigabitEthernet0/0/0/1 in area 0.5.0.0 from EXSTART to EXCHANGE, Negotiation Done, vrf default vrfid 0x60000000 
RP/0/RP0/CPU0:Jan 21 08:12:11.976 : ospf[1018]: %ROUTING-OSPF-5-ADJCHG : Process 1, Nbr 11.31.112.20 on GigabitEthernet0/0/0/1 in area 0.5.0.0 from EXCHANGE to LOADING, Exchange Done, vrf default vrfid 0x60000000 
RP/0/RP0/CPU0:Jan 21 08:12:11.986 : ospf[1018]: %ROUTING-OSPF-5-ADJCHG : Process 1, Nbr 11.31.112.20 on GigabitEthernet0/0/0/1 in area 0.5.0.0 from LOADING to FULL, Loading Done, vrf default vrfid 0x60000000 
RP/0/RP0/CPU0:Jan 21 08:12:12.217 : ospf[1018]: %ROUTING-OSPF-5-ADJCHG : Process 1, Nbr 11.31.112.19 on GigabitEthernet0/0/0/0 in area 0.5.0.0 from DOWN to INIT, Received Hello, vrf default vrfid 0x60000000 
RP/0/RP0/CPU0:Jan 21 08:12:12.217 : ospf[1018]: %ROUTING-OSPF-5-ADJCHG : Process 1, Nbr 11.31.112.19 on GigabitEthernet0/0/0/0 in area 0.5.0.0 from INIT to 2WAY, 2-Way Received, vrf default vrfid 0x60000000 
RP/0/RP0/CPU0:Jan 21 08:12:12.217 : ospf[1018]: %ROUTING-OSPF-5-ADJCHG : Process 1, Nbr 11.31.112.19 on GigabitEthernet0/0/0/0 in area 0.5.0.0 from 2WAY to EXSTART, AdjOK?, vrf default vrfid 0x60000000 
RP/0/RP0/CPU0:Jan 21 08:12:12.240 : ospf[1018]: %ROUTING-OSPF-5-ADJCHG : Process 1, Nbr 11.31.112.19 on GigabitEthernet0/0/0/0 in area 0.5.0.0 from EXSTART to EXCHANGE, Negotiation Done, vrf default vrfid 0x60000000 
RP/0/RP0/CPU0:Jan 21 08:12:14.256 : ospf[1018]: %ROUTING-OSPF-5-ADJCHG : Process 1, Nbr 11.31.112.19 on GigabitEthernet0/0/0/0 in area 0.5.0.0 from EXCHANGE to LOADING, Exchange Done, vrf default vrfid 0x60000000 
RP/0/RP0/CPU0:Jan 21 08:12:14.256 : ospf[1018]: %ROUTING-OSPF-5-ADJCHG : Process 1, Nbr 11.31.112.19 on GigabitEthernet0/0/0/0 in area 0.5.0.0 from LOADING to FULL, Loading Done, vrf default vrfid 0x60000000 
RP/0/RP0/CPU0:Jan 21 08:12:14.859 : bpm[1063]: %ROUTING-BGP-5-ASYNC_IPC_STATUS : bpm-default:(A)inst-id 0, Connection Closed 
RP/0/RP0/CPU0:Jan 21 08:12:17.732 : bfd_agent[395]: %L2-BFD-6-SESSION_STATE_UP : BFD session to neighbor 69.82.15.113 on interface GigabitEthernet0/0/0/0 is up 
RP/0/RP0/CPU0:Jan 21 08:12:20.911 : bpm[1063]: %ROUTING-BGP-5-ASYNC_IPC_STATUS : bpm-default:(A)inst-id 0, Connection Open 
RP/0/RP0/CPU0:Jan 21 08:12:21.167 : bgp[1048]: %ROUTING-BGP-5-ASYNC_IPC_STATUS : default, process instance 1:(A)inst-id 0, Connection Establised 
RP/0/RP0/CPU0:Jan 21 08:12:21.909 : bgp[1048]: %ROUTING-BGP-5-ASYNC_IPC_STATUS : default:(A)inst-id 0, Initial Config Done 
RP/0/RP0/CPU0:Jan 21 08:12:27.375 : bgp[1048]: %ROUTING-BGP-5-ADJCHANGE : neighbor 10.0.0.2 Up (VRF: default) (AS: 22394) 
RP/0/RP0/CPU0:Jan 21 08:12:27.376 : bgp[1048]: %ROUTING-BGP-5-NSR_STATE_CHANGE : Changed state to Not NSR-Ready 
RP/0/RP0/CPU0:Jan 21 08:12:28.039 : bgp[1048]: %ROUTING-BGP-5-ADJCHANGE : neighbor 11.31.112.210 Up (VRF: default) (AS: 22394)

3. Upload the core files in this DDTS

Conditions:
Execute "process crash bgp location 0/RP0/CPU0 "
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