Vrrp Vrid Preempt-Mode - HP 7500 Series High Availability Command Reference

Related commands
display vrrp

vrrp vrid preempt-mode

Use vrrp vrid preempt-mode to enable preemption on the router and configure its preemption delay in
a specific VRRP group.
Use undo vrrp 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 vrid preempt-mode timer delay to restore the default preemption delay.
Syntax
vrrp vrid virtual-router-id preempt-mode [ timer delay delay-value ]
undo vrrp vrid virtual-router-id preempt-mode [ timer delay ]
Default
The router operates in preemption 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 the preemption delay. The delay-value argument ranges from 0 to 255
seconds and defaults to 0 seconds.
Usage guidelines
To avoid frequent member state changes in a VRRP group and make sure 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,
and then sends VRRP advertisements to start a new master election in the VRRP group and becomes the
master.
Before you execute the command, create a VRRP group on an interface and configure the virtual IP
address of the VRRP group.
Examples
# Enable preemption on the switch in VRRP group 1, and set the preemption delay to five seconds.
<Sysname> system-view
[Sysname] interface vlan-interface 2
[Sysname-Vlan-interface2] vrrp vrid 1 virtual-ip 10.1.1.1
[Sysname-Vlan-interface2] vrrp vrid 1 preempt-mode timer delay 5
Related commands
display vrrp
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