H3C Technologies H3C S12500-X Series Switches - Manual (Page 95)

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# When the uplink of Switch A goes down, the status of track entry 1 becomes Negative.
<SwitchA> display track 1
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: 1.1.1.2
Local IP: 1.1.1.1
# Display detailed information about VRRP group 1 on Switch A.
<SwitchA> display vrrp verbose
IPv4 Virtual Router Information:
Running Mode : Standard
Total number of virtual routers : 1
Interface Vlan-interface2
VRID : 1 Adver Timer : 100
Admin Status : Up State : Backup
Config Pri : 110 Running Pri : 90
Preempt Mode : Yes Delay Time : 0
Become Master : 2200ms left
Auth Type : None
Virtual IP : 192.168.0.10
Master IP : 192.168.0.102
VRRP Track Information:
Track Object : 1 State : Negative Pri Reduced : 20
# Display detailed information about VRRP group 1 on Switch B.
<SwitchB> display vrrp verbose
IPv4 Virtual Router Information:
Running Mode : Standard
Total number of virtual routers : 1
Interface Vlan-interface2
VRID : 1 Adver Timer : 100
Admin Status : Up State : Master
Config Pri : 100 Running Pri : 100
Preempt Mode : Yes Delay Time : 0
Auth Type : None
Virtual IP : 192.168.0.10
Virtual MAC : 0000-5e00-0101
Master IP : 192.168.0.102
The output shows that when Switch A detects that the uplink fails through BFD, it decreases its priority by
20 to make sure that Switch B can preempt as the master.