H3C Technologies H3C SecPath F1000-E - Manual (Page 312)

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[DeviceA] display track all
Track ID: 1
Status: Negative
Notification delay: Positive 0, Negative 0 (in seconds)
Reference object:
BFD Session:
Packet type: Echo
Interface : GigabitEthernet1/1
Remote IP : 10.2.1.2
Local IP : 10.2.1.1
# Display the routing table of Device A.
[DeviceA] 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 GE1/1
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 GE1/2
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 GE1/3
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 GE1/2
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 information shows the BFD detection result: if the next hop 10.2.1.2 is unreachable (the status
of the track entry is Negative), the backup static route takes effect, and Device A forwards packets to
30.1.1.0/24 through Device C and Device B.
# When the master route fails, the hosts in 20.1.1.0/24 can still communicate with the hosts in
30.1.1.0/24.
[DeviceA] ping -a 20.1.1.1 30.1.1.1
PING 30.1.1.1: 56 data bytes, press CTRL_C to break
Reply from 30.1.1.1: bytes=56 Sequence=1 ttl=254 time=2 ms
Reply from 30.1.1.1: bytes=56 Sequence=2 ttl=254 time=1 ms
Reply from 30.1.1.1: bytes=56 Sequence=3 ttl=254 time=1 ms
Reply from 30.1.1.1: bytes=56 Sequence=4 ttl=254 time=2 ms
Reply from 30.1.1.1: bytes=56 Sequence=5 ttl=254 time=1 ms
--- 30.1.1.1 ping statistics ---
5 packet(s) transmitted
5 packet(s) received
0.00% packet loss
round-trip min/avg/max = 1/1/2 ms
# The output information on Device B is similar to that on Device A. When the master route fails, the hosts
in 30.1.1.0/24 can still communicate with the hosts in 20.1.1.0/24.
[DeviceB] ping -a 30.1.1.1 20.1.1.1