3Com S7906E Configuration Manual page 2268

# Configure the source address of BFD echo packets as 10.10.10.10.
[SwitchA] bfd echo-source-ip 10.10.10.10
4) Configure a track entry on Switch A.
# Configure track entry 1, and associate it with the BFD session. Check whether Switch A can be
interoperated with the next hop of static route: Switch B.
[SwitchA] track 1 bfd echo interface vlan-interface 3 remote ip 10.2.1.1 local ip 10.2.1.2
5) Verify the configuration
# Display information of the track entry on Switch A.
[SwitchA] display track all
Track ID: 1
Status: Positive
Notification delay: Positive 0, Negative 0 (in seconds)
Reference object:
BFD Session:
Packet type: Echo
Interface : Vlan-interface3
Remote IP : 10.2.1.1
Local IP : 10.2.1.2
# Display the routing table of Switch A.
[SwitchA] display ip routing-table
Routing Tables: Public
Destinations : 5
Destination/Mask Proto
10.1.1.0/24 Static 60
10.2.1.0/24 Direct 0
10.2.1.2/32 Direct 0
127.0.0.0/8 Direct 0
127.0.0.1/32 Direct 0
The output information above indicates the BFD detection result, that is, the next hop 10.2.1.1 is
reachable (the status of the track entry is Positive), and the configured static route is valid.
# Remove the IP address of VLAN-interface 3 on Switch B.
<SwitchB> system-view
[SwitchB] interface vlan-interface 3
[SwitchB-Vlan-interface3] undo ip address
# Display information of the track entry on Switch A.
[SwitchA] display track all
Track ID: 1
Status: Negative
Notification delay: Positive 0, Negative 0 (in seconds)
Reference object:
BFD Session:
Packet type: Echo
Interface : Vlan-interface3
Routes : 5
Pre Cost NextHop
0 10.2.1.1
0 10.2.1.2
0 127.0.0.1
0 127.0.0.1
0 127.0.0.1
1-20
Interface
Vlan3
Vlan3
InLoop0
InLoop0
InLoop0