H3C Technologies H3C S12500 Series Switches - Manual (Page 146)

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*0.50673831 SwitchA BFD/8/SCM:No application in session, delete
session[192.168.0.102/192.168.0.100, vlan10]
*0.50673831 SwitchA BFD/8/SCM:Sess[192.168.0.102/192.168.0.100, 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
The output shows that Switch A can quickly detect the changes on Switch B.
# Display the BFD information on Switch A.
<SwitchA> display bfd session
The output shows that Switch A has deleted the BFD session on VLAN-interface 10 to Switch B and
displays no output.
# Display routes destined for 120.1.1.0/24 on Switch A.
<SwitchA> display ip routing-table 120.1.1.0 verbose
Routing Table : Public
Summary Count : 1
Destination: 120.1.1.0/24
Protocol: OSPF Process ID: 1
Preference: 10 Cost: 4
IpPrecedence: QosLcId:
NextHop: 10.1.1.100 Interface: Vlan-interface11
BkNextHop: 0.0.0.0 BkInterface:
RelyNextHop: 0.0.0.0 Neighbor : 0.0.0.0
Tunnel ID: 0x0 Label: NULL
BKTunnel ID: 0x0 BKLabel: NULL
State: Active Adv Age: 00h58m10s
Tag: 0
The output shows that Switch A communicates with Switch B through VLAN-interface 11.
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 might have different network segments and masks).