Catalyst 3750-E and 3560-E Switch Cisco IOS ... - DNIP . NET

Chapter 2Catalyst 3750-E and 3560-E Switch Cisco IOS Commandsinterface port-channelinterface port-channelUse the interface port-channel global configuration command on the switch stack or on a standaloneswitch to access or create the port-channel logical interface. Use the no form of this command to removethe port-channel.interface port-channel port-channel-numberno interface port-channel port-channel-numberSyntax Descriptionport-channel-number Port-channel number. The range is 1 to 48.DefaultsNo port-channel logical interfaces are defined.Command ModesGlobal configurationCommand HistoryRelease12.2(35)SE2ModificationThis command was introduced.Usage GuidelinesFor Layer 2 EtherChannels, you do not have to create a port-channel interface first before assigning aphysical port to a channel group. Instead, you can use the channel-group interface configurationcommand. It automatically creates the port-channel interface when the channel group gets its firstphysical port. If you create the port-channel interface first, the channel-group-number can be the sameas the port-channel-number, or you can use a new number. If you use a new number, the channel-groupcommand dynamically creates a new port channel.You create Layer 3 port channels by using the interface port-channel command followed by the noswitchport interface configuration command. You should manually configure the port-channel logicalinterface before putting the interface into the channel group.Only one port channel in a channel group is allowed.CautionWhen using a port-channel interface as a routed port, do not assign Layer 3 addresses on the physicalports that are assigned to the channel group.CautionDo not assign bridge groups on the physical ports in a channel group used as a Layer 3 port-channelinterface because it creates loops. You must also disable spanning tree.OL-9776-08Catalyst 3750-E and 3560-E Switch Command Reference2-201