Users Guide

Port channels can contain a mix of 1G/10G/40G interfaces. The interface speed the port channel uses is determined by the rst port
channel member that is physically up. Dell Networking OS disables the interfaces that do not match the interface speed that the rst
channel member sets. That rst interface may be the rst interface that is physically brought up or was physically operating when
interfaces were added to the port channel. For example, if the rst operational interface in the port channel is a Gigabit Ethernet
interface, all interfaces at 1000 Mbps are kept up, and all other interfaces that are not set to 1000 speed or auto negotiate are
disabled.
Dell Networking OS brings up the interfaces that are set to auto negotiate so that their speed is identical to the speed of the rst
channel member in the port channel.
Conguration Tasks for Port Channel Interfaces
To congure a port channel (LAG), use the commands similar to those found in physical interfaces. By default, no port channels are
congured in the startup conguration.
These are the mandatory and optional conguration tasks:
• Creating a Port Channel (mandatory)
• Adding a Physical Interface to a Port Channel (mandatory)
• Reassigning an Interface to a New Port Channel (optional)
• Conguring the Minimum Oper Up Links in a Port Channel (optional)
• Adding or Removing a Port Channel from a VLAN (optional)
• Assigning an IP Address to a Port Channel (optional)
• Deleting or Disabling a Port Channel (optional)
• Load Balancing Through Port Channels (optional)
Creating a Port Channel
You can create up to port channels with up to 16 port members per group on the platform.
To congure 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 or Layer 3 mode. To place the port channel in Layer 2 mode or
congure an IP address to place the port channel in Layer 3 mode, use the switchport command.
You can congure a port channel as you would a physical interface by enabling or conguring protocols or assigning access control
lists.
Adding a Physical Interface to a Port Channel
The physical interfaces in a port channel can be on any line card in the chassis, but must be the same physical type.
NOTE: Port channels can contain a mix of Ethernet interfaces, but Dell Networking OS disables the interfaces that are
not the same speed of the rst channel member in the port channel (refer to 10/100/1000 Mbps Interfaces in Port
Channels).
You can add any physical interface to a port channel if the interface conguration is minimal. You can congure only the following
commands on an interface if it is a member of a port channel:
• description
Interfaces
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