H3C Technologies H3C SR8800 - Manual (Page 149)

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# After the link over which Router A and Router B communicates through the Layer 2 switch fails,
Router A quickly detects the change on Router B.
%Nov 12 18:34:48:823 2005 RouterA BFD/5/LOG: Sess[192.168.0.102/192.168.0.100,
GE3/1/1], Sta : UP->DOWN, Diag: 1
%Nov 12 18:34:48:824 2005 RouterA RM/4/RMLOG:OSPF-NBRCHANGE: Process 1, Neighbour
192.168.0.102 (GigabitEthernet3/1/1) from Full to Down
*0.50673825 RouterA BFD/8/SCM:Sess[192.168.0.102/192.168.0.100,GE3/1/1],Oper:
Reset
*0.50673825 RouterA BFD/8/EVENT:Send sess-down Msg, [Src:192.168.0.102,
Dst:192.168.0.100, GigabitEthernet3/1/1] Protocol: OSPF
*0.50673826 RouterA RM/7/RMDEBUG:OSPF-BFD: Message Type rcv BFD down, Connect Type
direct-connect, Src IP Address 192.168.0.102, Src IFIndex 5, Dst IP Address
192.168.0.100
*0.50673827 RouterA RM/7/RMDEBUG:OSPF-BFD: Message Type delete session, Connect Type
direct-connect, Src IP Address 192.168.0.102, Src IFIndex 5, Dst IP Address
192.168.0.100
OSPF 1: Nbr 192.168.0.100 Rcv KillNbr State Full -> Down.
*0.50673829 RouterA BFD/8/EVENT:Receive Delete-sess, [Src:192.168.0.102,
Dst:192.168.0.100,GigabitEthernet3/1/1], Direct, Proto:OSPF
*0.50673830 RouterA BFD/8/SCM:Sess[192.168.0.102/192.168.0.100,GE3/1/1], Oper: Del
application(OSPF)
*0.50673831 RouterA BFD/8/SCM:No application in session, delete
session[192.168.0.102/192.168.0.100,GE3/1/1]
*0.50673831 RouterA BFD/8/SCM:Sess[192.168.0.102/192.168.0.100,GE3/1/1], Oper:
Delete
*0.50673832 RouterA BFD/8/SCM:Delete send-packet timer
*0.50673833 RouterA BFD/8/SCM:Delete session entry
*0.50673833 RouterA BFD/8/SCM:Delete session from IP hash table
*0.50673834 RouterA BFD/8/SCM:Delete session from bfd interface
*0.50673834 RouterA BFD/8/SCM:No session under bfd-int[GigabitEthernet3/1/1] with
default configuration, delete bfd-if
*0.50673835 RouterA BFD/8/SCM:Bfd-if[GigabitEthernet3/1/1], Oper: Delete
*0.50673840 RouterA BFD/8/SCM:No bfd session exists, stop receiving any bfd packets
# Display the BFD information of Router A.
The BFD session between Router A and Router B is deleted and no information is output.
<RouterA> display bfd session
# Display routes to 120.1.1.0/24 on Router A, and you can see that Router A communicates with
Router B through Router C.
<RouterA> display ip routing-table 120.1.1.0 verbose
Routing Table : Public
Summary Count : 2
Destination: 120.1.1.0/24
Protocol: OSPF Process ID: 1
Preference: 10 Cost: 4
NextHop: 10.1.1.100 Interface: GigabitEthernet3/1/2
BkNextHop: 0.0.0.0 BkInterface:
RelyNextHop: 0.0.0.0 Neighbor : 0.0.0.0
Tunnel ID: 0x0 Label: NULL
State: Active Adv Age: 00h58m10s
Tag: 0