194
10.3.1.0/24 Direct 0 0 10.3.1.1 Vlan3
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 Vlan5
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 Vlan2
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 that Switch A forwards packets to 30.1.1.0/24 through Switch B. The master static
route has taken effect.
# Remove the IP address of VLAN-interface 2 on Switch B.
<SwitchB> system-view
[SwitchB] interface vlan-interface 2
[SwitchB-Vlan-interface2] undo ip address
# Display information about the track entry on Switch A.
[SwitchA] 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: Vlan-interface2
VPN instance name: -
Remote IP: 10.2.1.2
Local IP: 10.2.1.1
The output shows that the status of the track entry is Negative, indicating that the next hop 10.2.1.2
is unreachable.
# Display the routing table of Switch A.
[SwitchA] display ip routing-table
Destinations : 9 Routes : 9
Destination/Mask Proto Pre Cost NextHop Interface
10.2.1.0/24 Direct 0 0 10.2.1.1 Vlan2
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 Vlan3
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 Vlan5
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 Vlan3
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 that Switch A forwards packets to 30.1.1.0/24 through Switch C and Switch B. The
backup static route has taken effect.
# Verify that the hosts in 20.1.1.0/24 can communicate with the hosts in 30.1.1.0/24 when the master
route fails.
[SwitchA] ping -a 20.1.1.1 30.1.1.1
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