HPE FlexNetwork HSR6800 series Configuration Manual page 234

10.3.1.1/32
20.1.1.0/24
20.1.1.1/32
30.1.1.0/24
127.0.0.0/8
127.0.0.1/32
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 1/0/1 on Router B.
<RouterB> system-view
[RouterB] interface gigabitethernet 1/0/1
[RouterB-GigabitEthernet1/0/1] undo ip address
# Display information about the track entry on Router A.
[RouterA] display track all
Track ID: 1
Status: Negative
Duration: 0 days 0 hours 0 minutes 15 seconds
Notification delay: Positive 0, Negative 0 (in seconds)
Reference object:
BFD session:
Packet type: Echo
Interface : GigabitEthernet1/0/1
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
Destination/Mask
10.2.1.0/24
10.2.1.1/32
10.3.1.0/24
10.3.1.1/32
20.1.1.0/24
20.1.1.1/32
30.1.1.0/24
127.0.0.0/8
127.0.0.1/32
The output 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 Router A forwards packets to
30.1.1.0/24 through Router C and Router 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.
[RouterA] ping -a 20.1.1.1 30.1.1.1
PING 30.1.1.1: 56
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
Direct 0 0
Direct 0 0
Direct 0 0
Static 60 0
Direct 0 0
Direct 0 0
Routes : 9
Proto Pre Cost
Direct 0 0
Direct 0 0
Direct 0 0
Direct 0 0
Direct 0 0
Direct 0 0
Static 80 0
Direct 0 0
Direct 0 0
data bytes, press CTRL_C to break
227
127.0.0.1 InLoop0
20.1.1.1 GE1/0/3
127.0.0.1 InLoop0
10.2.1.2 GE1/0/1
127.0.0.1 InLoop0
127.0.0.1 InLoop0
NextHop Interface
10.2.1.1 GE1/0/1
127.0.0.1 InLoop0
10.3.1.1 GE1/0/2
127.0.0.1 InLoop0
20.1.1.1 GE1/0/3
127.0.0.1 InLoop0
10.3.1.3 GE1/0/2
127.0.0.1 InLoop0
127.0.0.1 InLoop0