OS10 Enterprise Edition User Guide Release 10.4.0E(R3)


Add port member

When you add a port interface to a port-channel:

  • The port-channel configuration and administrative status are applied to 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 configuration before you configure an IP address, use the no switchport command.
  • All interfaces should have the same speed (recommended). Port-channels can contain a mix of 10G and 40G Ethernet interfaces, but interfaces that are not the same speed as the first channel member in the port-channel are automatically disabled.
  • An interface should not contain any non-default L2/L3 configuration settings — only the description and shutdown or no shutdowncommands are supported. You cannot add an IP address or a static MAC address to a member interface.
  • You cannot enable flow control on a port-channel interface — flow control is supported on physical interfaces that are port-channel members.
  • Port-channels support LACP (802.3ad). LACP identifies similarly configured 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 spanning-tree operation, L2 interfaces that are LACP-enabled port-channel members may flap 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 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
                                 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

LACP enables ports to be dynamically bundled as members of a port-channel. To configure a port for LACP operation, use the channel-group mode command. Active and passive modes allow LACP to negotiate between ports to determine if they can form a port -channel based on their configuration settings.

OS10(config)# interface port-channel 100
                                 OS10(conf-if-po-10)# exit
                                 OS10(config)# interface ethernet 1/1/2
                                 OS10(conf-if-eth1/1/2)# channel-group 100 mode active

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