79
Destination/Mask Proto Pre Cost NextHop Interface
10.2.1.0/24 Direct 0 0 10.2.1.1 GE1/0
10.2.1.1/32 Direct 0 0 127.0.0.1 InLoop0
10.3.1.0/24 Direct 0 0 10.3.1.1 GE2/0
10.3.1.1/32 Direct 0 0 127.0.0.1 InLoop0
20.1.1.0/24 Direct 0 0 20.1.1.1 GE3/0
20.1.1.1/32 Direct 0 0 127.0.0.1 InLoop0
30.1.1.0/24 Static 60 0 10.2.1.2 GE1/0
127.0.0.0/8 Direct 0 0 127.0.0.1 InLoop0
127.0.0.1/32 Direct 0 0 127.0.0.1 InLoop0
The output shows the BFD detection result: the next hop 10.2.1.2 is reachable (the status of the track entry
is Positive), and the master static route takes effect. Router A forwards packets to 30.1.1.0/24 through
Router B.
# Remove the IP address of interface GigabitEthernet 1/0 on Router B.
<RouterB> system-view
[RouterB] interface gigabitethernet 1/0
[RouterB-GigabitEthernet1/0] undo ip address
# Display information about the track entry on Router A.
[RouterA] display track all
Track ID: 1
State: Negative
Duration: 0 days 0 hours 0 minutes 32 seconds
Notification delay: Positive 0, Negative 0 (in seconds)
Tracked object:
BFD session mode: Echo
Outgoing interface: GigabitEthernet1/0
VPN instance name: -
Remote IP: 10.2.1.2
Local IP: 10.2.1.1
# Display the routing table of Router A.
[RouterA] display ip routing-table
Routing Tables: Public
Destinations : 9 Routes : 9
Destination/Mask Proto Pre Cost NextHop Interface
10.2.1.0/24 Direct 0 0 10.2.1.1 GE1/0
10.2.1.1/32 Direct 0 0 127.0.0.1 InLoop0
10.3.1.0/24 Direct 0 0 10.3.1.1 GE2/0
10.3.1.1/32 Direct 0 0 127.0.0.1 InLoop0
20.1.1.0/24 Direct 0 0 20.1.1.1 GE3/0
20.1.1.1/32 Direct 0 0 127.0.0.1 InLoop0
30.1.1.0/24 Static 80 0 10.3.1.3 GE2/0
127.0.0.0/8 Direct 0 0 127.0.0.1 InLoop0
127.0.0.1/32 Direct 0 0 127.0.0.1 InLoop0