Reference Guide

Interfaces | 375

FTOS brings up 10/100/1000 interfaces that are set to auto negotiate so that their speed is identical to the

speed of the first channel member in the port channel.

Configuration task list for port channel interfaces

To configure a port channel (LAG), you use the commands similar to those found in physical interfaces.

By default, no port channels are configured in the startup configuration.

• Create a port channel (mandatory)

• Add a physical interface to a port channel (mandatory)

• Reassign an interface to a new port channel (optional)

• Configure the minimum oper up links in a port channel (LAG) (optional)

• Add or remove a port channel from a VLAN (optional)

• Assign an IP address to a port channel (optional)

• Delete or disable a port channel (optional)

• Load balancing through port channels (optional)

Create a port channel

You can create up to 52 port channels with 8 port members per group on an S-Series S25 or S50, and 128

port channels with 8 port members per group on an S-Series S55, S60, S4810, S6000 and Z9000.

To configure a port channel, use these commands in the following sequence, starting in the

CONFIGURATION mode:

The port channel is now enabled and you can place the port channel in Layer 2 or Layer 3 mode. Use the

switchport command to place the port channel in Layer 2 mode or configure an IP address to place the port

channel in Layer 3 mode.

You can configure a port channel as you would a physical interface by enabling or configuring protocols or

assigning access control lists.

Step Command Syntax Command Mode Purpose

1 interface port-channel id-number CONFIGURATION Create a port channel.

no shutdown

INTERFACE

PORT-CHANNEL

Ensure that the port channel is active.