3.11.3 LACP System Configuration

Use this command to specify if the group performs automatic link (re-)calculation when links with higher priority become available (revertive) and the maximum number of active bundled LACP ports allowed in an aggregation. Also, set the LACP timeout on the port, that is, how fast to transmit BPDUs, once a sec (fast) or once each 30 sec (slow) and the priority.

Command Syntax:

lacp failover { revertive | non-revertive }
lacp max-bundle <v_uint>
lacp timeout { fast | slow }
lacp port-priority <v_1_to_65535>
lacp system-priority <v_1_to_65535>

Argument

Description

Parameter

revertive

Group performs automatic link (re-)calculation

non-revertive

Group will not perform automatic link (re-)calculation

<v_uint>

This parameter only applies to LACP-enabled groups. It determines the maximum number of active bundled LACP ports allowed in an aggregation.

<v_1_to_65535>

Priority value 1 to 65535, lower means higher priority.

Default

Revertive failover is enabled.

Mode

LLAG mode and Port List Interface mode

Usage

Specify if the group performs automatic link (re-)calculation. To revert to default, use the ‘no’ version of the command.

Example

Example 1:

Set failover to non-revertive on interface LLAG 1 with max bundle 4.

# configure terminal
(config)# interface llag 1
(config-llag)# lacp failover non-revertive
(config-llag)# lacp max-bundle 4