H3C Technologies H3C SR8800 - Manual (Page 341)

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IPv6 Session Working Under Ctrl Mode:
Local Discr: 1441 Remote Discr: 1450
Source IP: FE80::20F:FF:FE00:1202 (link-local address of GigabitEthernet
3/1/1 on Router A)
Destination IP: FE80::20F:FF:FE00:1200 (link-local address of GigabitEthernet
3/1/1 on Router B)
Session State: Up Interface: GE3/1/1
Hold Time: /
# Display routes to 2001:2::0/64 on Router A, and you can see that Router A communicates with
Router B through the Layer 2 switch.
display ipv6 routing-table 2001:4::0 64 verbose
Routing Table :
Summary Count : 2
Destination : 2001:4::0 PrefixLength : 64
NextHop : 2001::2 Preference : 10
RelayNextHop : :: Tag : 0H
Neighbor : :: ProcessID : 0
Interface : GigabitEthernet3/1/1 Protocol : OSPFv3
State : Active Adv Cost : 1
Tunnel ID : 0x0 Label : NULL
Age : 4538sec
Destination : 2001:4::0 PrefixLength : 64
NextHop : 2001:2::2 Preference : 10
RelayNextHop : :: Tag : 0H
Neighbor : :: ProcessID : 0
Interface : GigabitEthernet3/1/2 Protocol : OSPFv3
State : Invalid Adv Cost : 2
Tunnel ID : 0x0 Label : NULL
Age : 4515sec
# Enable BFD debugging on Router A.
debugging bfd scm
debugging bfd event
debugging ospfv3 event bfd
terminal debugging
# After the link between Router B and the Layer 2 switch fails, Router A quickly detects the change
on Router B.
%Nov 5 11:37:43:062 2009 RouterA BFD/5/BFD_CHANGE_FSM: Sess[FE80::20F:FF:FE00:1202/
FE80::20F:FF:FE00:1200,15/15,GE3/1/1,Ctrl], Sta: UP->DOWN, Diag: 1
%Nov 5 11:37:43:062 2009 RouterA OSPFV3/5/OSPFv3_NBR_CHG: OSPFv3 1 Neighbor
2.2.2.2(GigabitEthernet3/1/1) from Full to Down.
*Nov 5 11:37:43:062 2009 RouterA RM/6/RMDEBUG: OSPFv3 OSPFv3-BFD: Message Type rcv
BFD down, Connect Type direct-connect, Src IP Address FE80::20F:FF:FE00:1202, Dst IP
Address FE80::20F:FF:FE00:1200.