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Lacp port-priority – Accton Technology ES5508 User Manual

Page 354

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Command Line Interface

4-142

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Default Setting

0

Command Mode

Interface Configuration (Port Channel)

Command Usage

• Ports are only allowed to join the same LAG if (1) the LACP system priority

matches, (2) the LACP port admin key matches, and (3) the LACP port
channel key matches (if configured).

• If the port channel admin key (lacp admin key - Port Channel) is not set when

a channel group is formed (i.e., it has the null value of 0), this key is set to the
same value as the port admin key (lacp admin key - Ethernet Interface) used
by the interfaces that joined the group. Note that when the LAG is no longer
used, the port channel admin key is reset to 0.

Example

lacp port-priority

This command configures LACP port priority. Use the no form to restore the default
setting.

Syntax

lacp {actor | partner} port-priority priority
no lacp {actor | partner} port-priority

• actor - The local side an aggregate link.
• partner - The remote side of an aggregate link.
priority - LACP port priority is used to select a backup link. (Range: 0-65535)

Default Setting

32768

Command Mode

Interface Configuration (Ethernet Ports 1-8)

Command Usage

• Setting a lower value indicates a higher effective priority.
• If an active port link goes down, the backup port with the highest priority is

selected to replace the downed link. However, if two or more ports have the
same LACP port priority, the port with the lowest physical port number will be
selected as the backup port.

• Once the remote side of a link has been established, LACP operational

settings are already in use on that side. Configuring LACP settings for the
partner only applies to its administrative state, not its operational state, and will
only take effect the next time an aggregate link is established with the partner.

Console(config)#interface port-channel 1
Console(config-if)#lacp admin-key 3
Console(config-if)#