API Guide

When more than one interface is added to a Layer 2-port channel, the system selects one of the active interfaces in the port channel to
be the primary port. The primary port replies to flooding and sends protocol data units (PDUs). An asterisk in the show interfaces
port-channel brief command indicates the primary port.
As soon as a physical interface is added to a port channel, the properties of the port channel determine the properties of the physical
interface. The configuration and status of the port channel are also applied to the physical interfaces within the port channel. For example,
if the port channel is in Layer 2 mode, you cannot add an IP address or a static MAC address to an interface that is part of that port
channel. In the following example, interface TengigabitEthernet 1/6 is part of port channel 5, which is in Layer 2 mode, and an error
message appeared when an IP address was configured.
Dell(conf-if-portch)#show config
!
interface Port-channel 5
no ip address
switchport
channel-member TengigabitEthernet 1/6
Dell(conf-if-portch)#int te 1/6
Dell(conf-if)#ip address 10.56.4.4 /24
% Error: Port is part of a LAG Te 1/6.
Dell(conf-if)#
Reassigning an Interface to a New Port Channel
An interface can be a member of only one port channel. If the interface is a member of a port channel, remove it from the first port
channel and then add it to the second port channel.
Each time you add or remove a channel member from a port channel, the system recalculates the hash algorithm for the port channel.
To reassign an interface to a new port channel, use the following commands.
1. Remove the interface from the first port channel.
INTERFACE PORT-CHANNEL mode
no channel-member interface
2. Change to the second port channel INTERFACE mode.
INTERFACE PORT-CHANNEL mode
interface port-channel id number
3. Add the interface to the second port channel.
INTERFACE PORT-CHANNEL mode
channel-member interface
The following example shows moving the TengigabitEthernet 1/8 interface from port channel 4 to port channel 3.
Dell(conf-if-portch)#show config
!
interface Port-channel 4
no ip address
channel-member TengigabitEthernet 1/8
no shutdown
Dell(conf-if-portch)#no chann te 1/8
Dell(conf-if-portch)#int port 5
Dell(conf-if-portch)#channel te 1/8
Dell(conf-if-portch)#show conf
!
interface Port-channel 5
no ip address
channel-member TengigabitEthernet 1/8
shutdown
Dell(conf-if-portch)#
Configuring the Minimum Oper Up Links in a Port Channel
You can configure the minimum links in a port channel (LAG) that must be in “oper up” status to consider the port channel to be in “oper
up” status.
To set the “oper up” status of your links, use the following command.
Interfaces
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