Default VLAN and multiple VLAN range support

They provide the ability for the switch to operate as a plug and play device and connect to various Ethernet-enabled devices in a small, scaled enterprise network. When the switch boots, a VLAN named default is created. The default VLAN is automatically created for the default routing instance named default-switch. All interfaces on the switch are automatically configured as access interfaces and are part of the default VLAN. The default VLAN accepts and forwards untagged packets only and is preconfigured with a VLAN ID (vlan-id) of 1. The default VLAN does not support a VLAN ID list (vlan-id-list), vlan-id set to all, or vlan-id set to none. You can configure the VLAN ID to be another value, but the value must be between 1 and 4093. Access interfaces that are enabled for VoIP or 802.1X are internally converted to trunk interfaces, so that the interfaces can belong to multiple VLANs. If the interfaces do not belong to a valid VLAN, the interfaces automatically become part of the default VLAN.