lacp priority

Function

The lacp priority command sets a Link Aggregation Control Protocol (LACP) system priority.

The undo lacp priority command restores the default LACP system priority.

The default LACP priority is 32768.

Format

lacp priority priority

undo lacp priority

Parameters

Parameter	Description	Value
priority priority	Specifies an LACP priority.	The value is an integer ranging from 0 to 65535. The smaller the priority value, the higher the priority.

Parameter

Description

Value

priority priority

Specifies an LACP priority.

The value is an integer ranging from 0 to 65535. The smaller the priority value, the higher the priority.

Views

System view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
trunk	write

Usage Guidelines

Usage Scenario

LACP system priorities are set to prioritize the device at either end of an Eth-Trunk link. The device with a higher system priority is selected as the Actor, and then active member interfaces are selected according to the configuration of the Eth-Trunk interface on the Actor.

If neither of the device at either end of an Eth-Trunk link is configured with a system priority, the devices use the default value 32768. In this case, the Actor is selected based on the system ID. That is, the device with the smaller system ID becomes the Actor. You can run the lacp priority command in the system view to change the Actor of an Eth-Trunk link

Prerequisites

The mode lacp-static command has been run in the Eth-Trunk interface view to configure the Eth-Trunk interface to work in static LACP mode.

Configuration Impact

In static LACP mode, active interfaces selected by devices at both ends of an Eth-Trunk link must be the same; otherwise, the link aggregation group cannot be set up.

If the max active-linknumber (Eth-Trunk interface view) command is run on an Eth-Trunk interface in static LACP mode to set the maximum number of active member links, when the number of Up Ethernet interfaces that are manually added to the Eth-Trunk interface exceeds the maximum value, you need to select active interfaces from the Up member interfaces. Running the lacp priority command to set LACP interface priorities ensures that interfaces with high priorities become active in static LACP mode.

If the max active-linknumber (Eth-Trunk interface view) command is not used, if the number of manually added member interfaces is smaller than the default value, you do not need to select active interfaces and all member interfaces are active.

Example

# Set the LACP system priority to 1.

<HUAWEI> system-view
[~HUAWEI] lacp priority 1