Can VLANs be configured on an FE interface?

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As a Layer 2 interface, an FE interface supports VLAN configuration.

Other related questions:
Can an IP address be configured for an FE interface on an AR
FE interfaces are classified into Layer 2 interfaces and Layer 3 interfaces. You can configure IP addresses for Layer 3 FE interfaces. Some FE interfaces can switch between Layer 2 and Layer 3 modes. For example, Ethernet0/0/0 on AR150&AR200 works in Layer 2 mode by default. Run the undo portswitch command to switch from Layer 2 mode to Layer 3 mode. After an FE interface is switched to Layer 3 mode, you can configure IP addresses for the interface.

Can multiple FE interfaces be grouped into a LAN
Multiple FE interfaces can be grouped into a LAN provided that the interfaces are grouped into a VLAN.

Configure the service VLAN and management VLAN
Configure the service VLAN and management VLAN. 1. Service VLAN - Command output on the AC: [HUAWEI]wlan [HUAWEI-wlan-view]service-set name test [HUAWEI-wlan-service-set-test]service-vlan 100 Multiple service sets have access to different service VLANs. 2. Management VLAN - Configure PVID and untag for the management VLAN on the switch connected to the AP. Allow packets from the management VLAN to pass through. - On Fit APs, no configuration is required for the interfaces connected to the switch. - On Fat APs, the configurations for wired-side interfaces are the same as the configurations for the interfaces on the switch. Note: 1. It is recommended that you configure the service VLAN and management VLAN differently, and do not use VLAN 1 for both VLANs. 2. In normal cases, there is only one management VLAN, but multiple service VLANs can be configured as required. 3. A service set can contain only one service VLAN. 4. In tunnel forwarding, the switch between the AP and AC does not allow packets from service VLANs to pass through, but in direct forwarding, the switch must allow packets to pass through. 5. If the service VLAN or management VLAN is changed, VLAN configurations on the devices along the path must be modified. If the network is newly deployed, you are advised to dial 400-822-9999 to seek assistance from Huawei's presale team to perform the network planning first.

What type of interfaces can VLANs be configured
Currently, the following Ethernet interface types are defined on the AR router: 1. Layer 2 Ethernet interfaces: They are physical interfaces working at the data link layer. These interfaces cannot be configured with IP addresses, but can forward received packets at Layer 2 or be added to VLANs to forward packets at Layer 3 through corresponding VLANIF interfaces. 2. Layer 3 Ethernet Interfaces: They are physical interfaces working at the network layer. These interfaces cannot be added to VLANs, but can be configured with IP addresses and forward received packets at Layer 3.

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