vrrp6 vrid timer advertise

Function

The vrrp6 vrid timer advertise command sets the interval at which the master sends VRRP6 Advertisement packets.

The undo vrrp6 vrid timer advertise command restores the default interval at which the master sends VRRP6 Advertisement packets.

By default, the master sends VRRP6 Advertisement packets every 1 second.

Format

vrrp6 vrid virtual-router-id timer advertise advertise-interval

undo vrrp6 vrid virtual-router-id timer advertise

Parameters

Parameter	Description	Value
vrid virtual-router-id	Specifies the VRID of a VRRP6 group.	The value is an integer that ranges from 1 to 255.
advertise advertise-interval	Specifies the interval at which the master sends VRRP6 Advertisement packets.	The value is an integer that ranges from 100 to 4095, in centiseconds.

Views

VLANIF interface view, Eth-Trunk interface view, GE interface view, MultiGE interface view, XGE interface view, 25GE interface view, 40GE interface view, 100GE interface view, Eth-Trunk sub-interface view, GE sub-interface view, MultiGE sub-interface view, XGE sub-interface view, 25GE sub-interface view, 40GE sub-interface view, 100GE sub-interface view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

The master in a VRRP6 group sends VRRP6 Advertisement packets to backups at intervals to notify that it is working properly. If the backup with the highest priority does not receive any VRRP6 Advertisement packets from the master at the specified interval (usually, three times the interval for sending VRRP6 Advertisement packets), it considers the master faulty and becomes the master. The vrrp6 vrid timer advertise command sets the interval at which the master sends VRRP6 Advertisement packets.

Prerequisites

The vrrp6 vrid virtual-ip command has been executed on an interface to create a VRRP6 group.

Precautions

If a longer interval is used, backups in the same VRRP6 group cannot detect the fault on the master in a timely manner, causing packet loss. If a shorter interval is used, system resources are occupied. In addition, when network traffic is heavy or the network is unstable, backups may not receive packets after the Master_Down_Interval timer expires. As a result, the VRRP6 group status is incorrectly switched. Set the interval based on actual networking.

For VRRP for IPv4, set the same interval for sending VRRP Advertisement packets for members in a VRRP group to prevent multiple masters in the VRRP group.
For VRRP for IPv6, even if you set different intervals for sending VRRP Advertisement packets for members in a VRRP6 group, there is only one master in a VRRP6 group.

Example

# Set the interval at which the master in VRRP6 group 1 sends VRRP6 Advertisement packets to 200 centiseconds on the VLANIF interface.

<HUAWEI> system-view
[HUAWEI] interface vlanif 100
[HUAWEI-Vlanif100] vrrp6 vrid 1 virtual-ip FE80::7 link-local
[HUAWEI-Vlanif100] vrrp6 vrid 1 timer advertise 200

# Set the interval at which the master in VRRP6 group 1 sends VRRP6 Advertisement packets to 200 centiseconds on the Ethernet interface.

<HUAWEI> system-view
[HUAWEI] interface gigabitethernet 0/0/1
[HUAWEI-GigabitEthernet0/0/1] undo portswitch
[HUAWEI-GigabitEthernet0/0/1] vrrp6 vrid 1 virtual-ip FE80::7 link-local
[HUAWEI-GigabitEthernet0/0/1] vrrp6 vrid 1 timer advertise 200