Reference Guide

Link Aggregation Control Protocol | 393
• Passive—In this state, the interface is not in an active negotiating state, but LACP will run on the link.
A port in Passive state also responds to negotiation requests (from ports in Active state). Ports in
Passive state respond to LACP packets.
FTOS supports LAGs in the following cases:
• A port in Active state can set up a port channel (LAG) with another port in Active state.
• A port in Active state can set up a LAG with another port in Passive state.
A port in Passive state cannot set up a LAG with another port in Passive state.
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
• Set the LACP long timeout
• Monitor and Debugging LACP
• Configure Shared LAG State Tracking
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