Reference Guide

Link Aggregation Control Protocol (LACP) | 455
LACP Configuration Commands
If aggregated ports are configured with compatible LACP modes (Off, Active, Passive), LACP can
automatically link them, as defined in IEEE 802.3, Section 43. The following commands configure LACP:
LACP Configuration Tasks
The tasks covered in this section are:
• Create a LAG
• Configure the LAG interfaces as dynamic on page 456
• Set the LACP long timeout on page 456
• Monitor and Debugging LACP on page 457
• Configure Shared LAG State Tracking on page 458
Create a LAG
To create a dynamic port channel (LAG), define the LAG and then the LAG interfaces. Use the interface
port-channel
and switchport commands, as shown in Figure 21-1, which uses the example of LAG 32:
Figure 21-1. Placing a LAG into the Default VLAN
Command Syntax Command Mode Purpose
[
no] lacp system-priority
priority-value
CONFIGURATION Configure the system priority.
Range: 1– 65535
(the higher the number, the lower the priority)
Default: 32768
[
no] port-channel-protocol lacp INTERFACE Enable or disable LACP on any LAN port:
• Default is “LACP disabled”
• This command creates a new context.
[
no] port-channel number mode
[
active | passive | off]
LACP Configure LACP mode.
• Default is “LACP active”
•
number cannot statically contain any links
[
no] lacp port-priority priority-value LACP Configure port priority.
• Ranges: 1 – 65535
(the higher the number, the lower the priority)
• Default: 32768
FTOS(conf)#interface port-channel 32
FTOS(conf-if-po-32)#no shutdown
FTOS(conf-if-po-32)#switchport