Users Guide

Member ports of a LAG are added and programmed into the hardware based on the port ID, instead of the order the ports come up. Load
balancing yields predictable results across resets and reloads.
Create port-channel
You can create a maximum of 128 port-channels, with up to 32 port members per group. Congure a port-channel similarly to a physical
interface, enable or congure protocols, or ACLs to a port channel. After you enable the port-channel, place it in L2 or L3 mode.
To place the port-channel in L2 mode or congure an IP address to place the port-channel in L3 mode, use the switchport command.
• Create a port-channel in CONFIGURATION mode.
interface port-channel id-number
Create port-channel
OS10(config)# interface port-channel 10
Add port member
When you add an interface to a port-channel:
• The administrative status applies to the port-channel.
• The port-channel conguration is applied to the member interfaces.
• A port-channel operates in either L2 (default) or L3 mode. To place a port-channel in L2 mode, use the switchport mode
command. To place a port-channel in L3 mode and remove L2 conguration before you congure an IP address, use the no
switchport
command.
• All interfaces must have the same speed.
• An interface must not contain non-default L2/L3 conguration settings. Only the description and shutdown or no
shutdown
commands are supported. You cannot add an IP address or static MAC address to a member interface.
• You cannot enable ow control on a port-channel interface. Flow control is supported on physical interfaces that are port-channel
members.
• Port-channels support 802.3ad LACP. LACP identies similarly congured links and dynamically groups ports into a logical channel.
LACP activates the maximum number of compatible ports that the switch supports in a port-channel.
• If you globally disable a spanning-tree operation, L2 interfaces that are LACP-enabled port-channel members may ap due to packet
loops.
Add port member — static LAG
A static port-channel LAG contains member interfaces that you manually assign using the channel-group mode on command.
OS10(config)# interface port-channel 10
Aug 24 4:5:38: %Node.1-Unit.1:PRI:OS10 %dn_ifm
%log-notice:IFM_ASTATE_UP: Interface admin state up.:port-channel10
Aug 24 4:5:38: %Node.1-Unit.1:PRI:OS10 %dn_ifm
%log-notice:IFM_OSTATE_DN: Interface operational state is down.:port-channel10
OS10(conf-if-po-10)# exit
OS10(config)# interface ethernet 1/1/2
OS10(conf-if-eth1/1/2)# channel-group 10 mode on
Aug 24 4:5:56: %Node.1-Unit.1:PRI:OS10 %dn_ifm
%log-notice:IFM_OSTATE_UP: Interface operational state is up.:port-channel10
Add port member — dynamic LACP
Interfaces
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