H3C Technologies H3C S10500 Series Switches - Manual (Page 153)

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# Configure Switch A to work in preemptive mode, so that it can become the master whenever it works
normally; configure the preemption delay as five seconds to avoid frequent status switchover.
[SwitchA-Vlan-interface2] vrrp vrid 1 preempt-mode timer delay 5
# Set VLAN interface 3 on Switch A to be tracked, and configure the amount by which the priority value
decreases to be more than 10 (30 in this example), so that when VLAN-interface 3 fails, the priority of
Switch A in VRRP group 1 decreases to a value lower than 100 and thus Switch B can become the master.
[SwitchA-Vlan-interface2] vrrp vrid 1 track interface vlan-interface 3 reduced 30
2. Configure Switch B
# Configure VLAN 2.
system-view
[SwitchB] vlan 2
[SwitchB-vlan2] port gigabitethernet 1/0/5
[SwitchB-vlan2] quit
[SwitchB] interface vlan-interface 2
[SwitchB-Vlan-interface2] ip address 202.38.160.2 255.255.255.0
# Create a VRRP group 1 and set its virtual IP address to 202.38.160.111.
[SwitchB-Vlan-interface2] vrrp vrid 1 virtual-ip 202.38.160.111
# Configure the authentication mode of the VRRP group as simple and authentication key as hello.
[SwitchB-Vlan-interface2] vrrp vrid 1 authentication-mode simple hello
# Set the interval for master to send VRRP advertisement to four seconds.
[SwitchB-Vlan-interface2] vrrp vrid 1 timer advertise 4
# Configure Switch B to work in preemptive mode, so that Switch B can become the master after the
priority of Switch A decreases to a value lower than 100. Configure the preemption delay as five seconds
to avoid frequent status switchover.
[SwitchB-Vlan-interface2] vrrp vrid 1 preempt-mode timer delay 5
3. Verify the configuration
After the configuration, Host B can be pinged successfully on Host A. To verify your configuration, use the
display vrrp verbose command.
# Display the detailed information of VRRP group 1 on Switch A.
[SwitchA-Vlan-interface2] display vrrp verbose
IPv4 Standby Information:
Run Mode : Standard
Run Method : Virtual MAC
Total number of virtual routers : 1
Interface Vlan-interface2
VRID : 1 Adver Timer : 4
Admin Status : Up State : Master
Config Pri : 110 Running Pri : 110
Preempt Mode : Yes Delay Time : 5
Auth Type : Simple Key : hello
Virtual IP : 202.38.160.111
Virtual MAC : 0000-5e00-0101
Master IP : 202.38.160.1
VRRP Track Information:
Track Interface: Vlan3 State : Up Pri Reduced : 30