lacp track vrrp

Function

The lacp track vrrp command associates an Eth-Trunk interface in static Link Aggregation Control Protocol (LACP) mode with a Manage Virtual Router Redundancy Protocol (mVRRP) backup group or a unicast VRRP group.

The undo lacp track vrrp command removes the association.

By default, no Eth-Trunk interface in static LACP mode is associated with an mVRRP group or a unicast VRRP group.

Format

lacp track vrrp vrid vrid interface { interface-type interface-number | interface-name }

undo lacp track vrrp

undo lacp track vrrp vrid vrid interface { interface-type interface-number | interface-name }

Parameters

Parameter	Description	Value
vrid vrid	Associates an Eth-Trunk interface in static LACP mode with the specified mVRRP group or unicast VRRP group. An Eth-Trunk interface in static LACP mode can be associated with only one VRRP group.	The value is an integer ranging from 1 to 255.
interface interface-type interface-number interface-name	Specifies the type and number of an interface that is tracked. Before associating an Eth-Trunk interface in static LACP mode with an mVRRP group, the interface specified by interface-type interface-number must have an mVRRP group configured. Before associating an Eth-Trunk interface in static LACP mode with a unicast VRRP group, the interface specified by interface-type interface-number must be a loopback interface that has a unicast VRRP group configured.	-

Parameter

Description

Value

vrid vrid

Associates an Eth-Trunk interface in static LACP mode with the specified mVRRP group or unicast VRRP group.

An Eth-Trunk interface in static LACP mode can be associated with only one VRRP group.

The value is an integer ranging from 1 to 255.

interface interface-type interface-number interface-name

Specifies the type and number of an interface that is tracked.

Before associating an Eth-Trunk interface in static LACP mode with an mVRRP group, the interface specified by interface-type interface-number must have an mVRRP group configured.
Before associating an Eth-Trunk interface in static LACP mode with a unicast VRRP group, the interface specified by interface-type interface-number must be a loopback interface that has a unicast VRRP group configured.

Views

Eth-Trunk interface view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
trunk	write

Usage Guidelines

Usage Scenario

a CE is dual-homed to UPE1 and UPE2. Eth-Trunk links in static LACP mode are configured between the CE and the UPEs. UPE1 and UPE2 are configured as an mVRRP group or a unicast VRRP group, with UPE1 being Master and UPE2 being Backup.

After the lacp track vrrp command is used on both UPEs, note the following:

When UPE1 becomes faulty, the master/backup switchover is performed in the mVRRP group or unicast VRRP group, and UPE2 switches to Master. The Eth-Trunk link between the CE and UPE1 detects the status change of the mVRRP group or unicast VRRP group and switches traffic to the Eth-Trunk link between the CE and UPE2, which becomes the active link.
When UPE1 recovers, it becomes Master and UPE2 becomes Backup. The Eth-Trunk link between the CE and UPE2 detects the status change of the mVRRP group or unicast VRRP group and switches traffic back to the Eth-Trunk link between the CE and UPE1, which becomes the active link.

Prerequisites

Before running the lacp track vrrp command, ensure that the specified Eth-Trunk interface works in static LACP mode and the associated VRRP group is an mVRRP group or a unicast VRRP group.

Precautions

If the vrrp vrid track interface command is used on the UPEs to configure the VRRP tracking interface status for fast master/backup switchover, note the following:

When the Eth-Trunk link between the CE and UPE1 becomes faulty or a member interface of the Eth-Trunk interface fails, the mVRRP group or unicast VRRP group can detect the fault according to the status of the tracked interface and implement fast master/backup switchover. As a result, UPE2 becomes Master.
When the Eth-Trunk link between the CE and UPE1 recovers, the mVRRP group or unicast VRRP group can detect the fault and implement fast master/backup switchover. As a result, UPE1 becomes Master again.

Example

# Associate an Eth-Trunk interface in static LACP mode with an mVRRP group.

<HUAWEI> system-view
[~HUAWEI] interface GigabitEthernet0/1/1
[~HUAWEI-GigabitEthernet0/1/1] admin-vrrp vrid 1
[*HUAWEI-GigabitEthernet0/1/1] quit
[*HUAWEI] interface eth-trunk 1
[*HUAWEI-Eth-Trunk1] mode lacp-static
[*HUAWEI-Eth-Trunk1] lacp track vrrp vrid 1 interface GigabitEthernet0/1/1