Users Guide

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. In VLT mode, port channel congurations are allowed 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)
• Conguring 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 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 mode. To congure an IP address to place the port channel in Layer 2
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 Gigabit Ethernet and 10/100/1000 Ethernet interfaces, but Dell Networking
OS disables the interfaces that are not the same speed of the rst channel member in the port channel.
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
• shutdown/no shutdown
• mtu
• ip mtu (if the interface is on a Jumbo-enabled by default)
NOTE:
A logical port channel interface cannot have ow control. Flow control can only be present on the physical interfaces if they are part
of a port channel.
To view the interface’s conguration, enter INTERFACE mode for that interface and use the show config command or from
EXEC Privilege mode, use the show running-config interface interface command.
When an interface is added to a port channel, Dell Networking OS recalculates the hash algorithm.
Link Aggregation
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