Users Guide

Link Aggregation Control Protocol (LACP)
The commands for Dell Networks’s implementation of the link aggregation control protocol (LACP) for
creating dynamic link aggregation groups (LAGs) — known as port-channels in the Dell Networking OS —
are provided in the following sections.
NOTE: For static LAG commands, refer to the Interfaces chapter), based on the standards specified
in the IEEE 802.3 Carrier sense multiple access with collision detection (CSMA/CD) access method
and physical layer specifications.
Configuration Tasks for Port Channel Interfaces
To configure a port channel (LAG), use the commands similar to those found in physical interfaces. By
default, no port channels are configured in the startup configuration. In VLT mode, port channel
configurations are allowed in the startup configuration.
These are the mandatory and optional configuration tasks:
• Creating a Port Channel (mandatory)
• Adding a Physical Interface to a Port Channel (mandatory)
• Reassigning an Interface to a New Port Channel (optional)
• Configuring the Minimum Oper Up Links in a Port Channel (optional)
• Configuring VLAN Tags for Member Interfaces (optional)
• Deleting or Disabling a Port Channel (optional)
Creating a Port Channel
You can create up to 128 port channels with eight port members per group on the Aggregator.
To configure a port channel, use the following commands.
1. Create a port channel.
CONFIGURATION mode
interface port-channel id-number
2. Ensure that the port channel is active.
INTERFACE PORT-CHANNEL mode
no shutdown
After you enable the port channel, you can place it in Layer 2 mode. To configure an IP address to place
the port channel in Layer 2 mode, use the switchport command.
You can configure a port channel as you would a physical interface by enabling or configuring protocols
or assigning access control lists.
Link Aggregation
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