H3C Technologies H3C S7500E Series Switches - Manual (Page 144)

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*0.50673825 SwitchA BFD/8/EVENT:Send sess-down Msg, [Src:10.1.0.102, Dst:10.1.0.100, vlan10]
Protocol: OSPF
*0.50673826 SwitchA RM/7/RMDEBUG:OSPF-BFD: Message Type rcv BFD down, Connect Type
direct-connect, Src IP Address 10.1.0.102, Src IFIndex 5, Dst IP Address 10.1.0.100
*0.50673827 SwitchA RM/7/RMDEBUG:OSPF-BFD: Message Type delete session, Connect Type
direct-connect, Src IP Address 10.1.0.102, Src IFIndex 5, Dst IP Address 10.1.0.100
OSPF 1: Nbr 10.1.0.100 Rcv KillNbr State Full -> Down.
*0.50673829 SwitchA BFD/8/EVENT:Receive Delete-sess, [Src:10.1.0.102, Dst:10.1.0.100,
vlan10], Direct, Proto:OSPF
*0.50673830 SwitchA BFD/8/SCM:Sess[10.1.0.102/10.1.0.100, vlan10], Oper: Del
application(OSPF)
*0.50673831 SwitchA BFD/8/SCM:No application in session, delete
session[10.1.0.102/10.1.0.100, vlan10]
*0.50673831 SwitchA BFD/8/SCM:Sess[10.1.0.102/10.1.0.100, vlan10], Oper: Delete
*0.50673832 SwitchA BFD/8/SCM:Delete send-packet timer
*0.50673833 SwitchA BFD/8/SCM:Delete session entry
*0.50673833 SwitchA BFD/8/SCM:Delete session from IP hash table
*0.50673834 SwitchA BFD/8/SCM:Delete session from bfd interface
*0.50673834 SwitchA BFD/8/SCM:No session under bfd-int[vlan10] with default configuration,
delete bfd-if
*0.50673835 SwitchA BFD/8/SCM:Bfd-if[vlan10], Oper: Delete
*0.50673840 SwitchA BFD/8/SCM:No bfd session exists, stop receiving any bfd packets
# Display the BFD information of Switch A. You can see that Switch A has removed its neighbor
relationship with Switch B and therefore no information is output.
display bfd session
# Display the OSPF neighbor information of Switch A. You can see that Switch A has removed its
neighbor relationship with Switch B and therefore no information is output.
display ospf peer
OSPF Process 1 with Router ID 192.168.1.40
Neighbor Brief Information
Troubleshooting OSPF Configuration
No OSPF Neighbor Relationship Established
Symptom
No OSPF neighbor relationship can be established.
Analysis
If the physical link and lower layer protocols work well, check OSPF parameters configured on
interfaces. Two neighbors must have the same parameters, such as the area ID, network segment and
mask (a P2P or virtual link may have different network segments and masks).
Solution
1) Display OSPF neighbor information using the display ospf peer command.
2) Display OSPF interface information using the display ospf interface command.
3) Ping the neighbor router’s IP address to check connectivity.
4) Check OSPF timers. The dead interval on an interface must be at least four times the hello
interval.