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HP VPN Firewall Appliances High Availability Command Reference

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vrrp ipv6 vrid preempt-mode
Use vrrp ipv6 vrid preempt-mode to configure preemption on the router and configure its preemption
delay in a specific VRRP group.
Use undo vrrp ipv6 vrid preempt-mode to disable preemption on the router in a specific VRRP group. As
a result, the router operates in non-preemptive mode.
Use undo vrrp ipv6 vrid preempt-mode timer delay to restore the default preemption delay.
Syntax
vrrp ipv6 vrid virtual-router-id preempt-mode [ timer delay delay-value ]
undo vrrp ipv6 vrid virtual-router-id preempt-mode [ timer delay ]
Default
The router operates in preemptive mode and the preemption delay is zero seconds.
Views
Interface view
Default command 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.
Usage guidelines
If you set the router in the VRRP group to operate in non-preemptive mode, the delay period automatically
changes to zero seconds.
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 IPv6
address of the VRRP group.
Examples
# Enable preemption on the router in VRRP group 80 and set the preemption delay to five seconds.
<Sysname> system-view
[Sysname] interface gigabitethernet0/1
[Sysname-GigabitEthernet0/1] vrrp ipv6 vrid 10 virtual-ip fe80::2 link-local
[Sysname-GigabitEthernet0/1] vrrp ipv6 vrid 10 preempt-mode timer delay 5
Related commands
display vrrp ipv6
vrrp ipv6 vrid priority
Use vrrp ipv6 vrid priority to configure the priority of the router in the specified VRRP group.