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R3166-R3206-HP High-End Firewalls High Availability Command Reference-6PW101

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Before executing the command, create a VRRP group on an interface and configure the virtual IP address
of the VRRP group.
You might configure different authentication modes and authentication keys for the VRRP groups on an
interface. However, the members of the same VRRP group must use the same authentication mode and
authentication key.
Related commands: display vrrp.
Examples
# Set the authentication mode to simple and authentication key to Sysname for VRRP group 1 on
interface GigabitEthernet0/1 to send and receive VRRP packets.
<Sysname> system-view
[Sysname] interface GigabitEthernet0/1
[Sysname-GigabitEthernet0/1] vrrp vrid 1 virtual-ip 10.1.1.1
[Sysname-GigabitEthernet0/1] vrrp vrid 1 authentication-mode simple Sysname
vrrp vrid preempt-mode
Syntax
vrrp vrid virtual-router-id preempt-mode [ timer delay delay-value ]
undo vrrp vrid virtual-router-id preempt-mode [ timer delay ]
View
Interface view
Default level
2: System level
Parameters
virtual-router-id: Virtual router ID or VRRP group number, which ranges from 1 to 255.
timer delay delay-value: Sets preemption delay. The delay-value argument ranges from 0 to 255 seconds
and defaults to 0 seconds.
Description
Use the vrrp vrid preempt-mode command to enable preemption on the router and configure its
preemption delay in the specified VRRP group.
Use the undo vrrp vrid preempt-mode command to disable preemption on the router in the specified
VRRP group, that is, specify the router to work in the non-preemptive mode.
Use the undo vrrp vrid preempt-mode timer delay command to restore the default preemption delay, that
is, zero seconds.
The default mode is immediate preemption without delay.
To avoid frequent member state changes in a VRRP group and make the backups have enough time to
collect information (such as routing information), each backup waits for a period of time (the preemption
delay time) after it receives an advertisement with the priority lower than the local priority, then sends
VRRP advertisements to start a new master election in the VRRP group and becomes the master.
Before executing the command, create a VRRP group on an interface and configure the virtual IP address
of the VRRP group.
Related commands: display vrrp.