Lacp Modes; Lacp Configuration Commands - Dell Force10 C150 Configuration Manual

LACP modes

FTOS provides the following three modes for configuration of LACP:
• Off—In this state, an interface is not capable of being part of a dynamic LAG. LACP does not run on
any port that is configured to be in this state.
• Active—In this state, the interface is said to be in the "active negotiating state." LACP runs on any
link that is configured to be in this state. A port in Active state also automatically initiates negotiations
with other ports by initiating LACP packets.
• 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:
Command Syntax
[ no ] lacp system-priority
priority-value
[ no ] port-channel-protocol lacp
[ no ] port-channel number mode
[ active | passive | off ]
[ no ] lacp port-priority priority-value
Command Mode Purpose
CONFIGURATION Configure the system priority.
Range: 1– 65535
(the higher the number, the lower the priority)
Default: 32768
INTERFACE Enable or disable LACP on any LAN port:
•
•
LACP Configure LACP mode.
•
•
LACP Configure port priority.
•
•
Default is "LACP disabled"
This command creates a new context.
Default is "LACP active"
number cannot statically contain any links
Ranges: 1 – 65535
(the higher the number, the lower the priority)
Default: 32768
Link Aggregation Control Protocol | 543