vrrp ipv6 vrid preempt-mode

Syntax

vrrp ipv6 vrid virtual-router-id preempt-mode [ timer delay delay-value ]

undo vrrp ipv6 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 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.

By default, the router operates in preemptive mode and the preemption delay is zero seconds.

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.

Related commands: display vrrp ipv6.

Examples

# Enable preemption on the switch in VRRP group 80 and set the preemption delay to five seconds.

<Sysname> system-view
[Sysname] interface vlan-interface 2
[Sysname-Vlan-interface2] vrrp ipv6 vrid 10 virtual-ip fe80::2 link-local
[Sysname-Vlan-interface2] vrrp ipv6 vrid 10 preempt-mode timer delay 5