98To do… Use the command… RemarksConfigure the description ofthe current VLAN description textOptionalVLAN ID is used by default, VLAN 0001 forexample.NOTE:• As the default VLAN, VLAN 1 cannot be created or removed.• You cannot manually create or remove VLANs reserved for special purposes.• Dynamic VLANs cannot be removed with the undo vlan command.• A VLAN with a QoS policy applied cannot be removed.• A VLAN operating as a remote probe VLAN for remote port mirroring cannot be removed with theundo vlan command. To do that, remove the remote probe VLAN configuration from it first.Configuring basic settings of a VLAN interfaceFor hosts of different VLANs to communicate at Layer 3, you can use VLAN interfaces. VLAN interfacesare virtual interfaces used for Layer 3 communication between different VLANs. They do not exist asphysical entities on devices. For each VLAN, you can create one VLAN interface. You can assign theVLAN interface an IP address and specify it as the gateway address of the VLAN to forward trafficdestined for an IP network segment different from that of the VLAN.Follow these steps to configure basic settings of a VLAN interface:To do… Use the command… RemarksEnter system view system-view —Create a VLAN interface andenter VLAN interface viewinterface vlan-interfacevlan-interface-idRequiredIf the VLAN interface already exists, youenter its view directly.• When the device starts up withempty configuration, the softwareinitial settings are used, and noVLAN interface exists on the device.• When the device starts up with thedefault configuration file, thesoftware default settings are used,and VLAN interface 1 exists on thedevice.For more information about the initialsettings and default configuration file,see Fundamentals Configuration Guide.
