mode

Function

The mode command configures a working mode of an Eth-Trunk.

The undo mode command restores the default working mode of an Eth-Trunk.

By default, an Eth-Trunk works in manual load balancing mode.

Format

mode { lacp | manual load-balance }

undo mode

Parameters

Parameter	Description	Value
lacp	Indicates the LACP mode.	-
manual load-balance	Indicates the manual load balancing mode.	-

Views

Eth-Trunk interface view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenarios

An Eth-Trunk can use the following working modes:

LACP mode

When the devices that are directly connected through an Eth-Trunk support LACP, you can run the mode lacp command to configure the Eth-Trunk to work in LACP mode. This mode can implement both load balancing and redundancy.

In LACP mode, you must manually create an Eth-Trunk and add member interfaces to the Eth-Trunk. The difference between the LACP mode and manual load balancing mode is that active member interfaces are selected by sending LACP data units (LACPDUs). That is, when a group of interfaces are added to an Eth-Trunk, devices at both ends determine active and inactive interfaces by sending LACPDUs to each other.
Manual load balancing mode

When one of the devices at the two ends of an Eth-Trunk does not support LACP, run the mode manual load-balance command to configure the Eth-Trunk to work in manual load balancing mode. In addition, you can add multiple member interfaces to the Eth-Trunk to increase the bandwidth between the two devices and improve reliability.

The manual load balancing mode is a basic link aggregation mode. In this mode, you must manually create an Eth-Trunk and add interfaces to the Eth-Trunk. LACP is not used.

In manual load balancing mode, all active interfaces of the Eth-Trunk forward data and load balance traffic.

Precautions

If you run the mode command multiple times, only the latest configuration takes effect.

If an Eth-Trunk interface has member interfaces, you can switch the Eth-Trunk interface's working mode between manual mode and LACP mode. However, if the Eth-Trunk interface is added to an E-Trunk, you cannot change its working mode.

Example

# Configure Eth-Trunk 1 to work in LACP mode.

<HUAWEI> system-view
[HUAWEI] interface eth-trunk 1
[HUAWEI-Eth-Trunk1] mode lacp