What type of interfaces can VLANs be configured

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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.

Other related questions:
Can VLANs be configured on an FE interface?
As a Layer 2 interface, an FE interface supports VLAN configuration.

Which interfaces on the AR router support LLDP
For V200R002C00 and later versions, only Layer 2 Ethernet interfaces on the AR series router support LLDP. For V200R002C01 and later versions, Layer 2 and Layer 3 Ethernet interfaces on the AR series router support LLDP.

How are VRRP packets of an S series switch sent in a super-VLAN
For S series switches (except the S1700), you are not advised to create a VRRP group on the corresponding VLANIF interface for a super-VLAN. If such a VRRP group has been created, the total number of VLANs (including common VLANs, super-VLANs, and sub-VLANs) in the VRRP group cannot exceed 256 to minimize impact on host performance. By default, if a VRRP group is configured for a super-VLAN, the master switch sends VRRP Advertisement packets to the super-VLAN's sub-VLAN that is in Up state and has the smallest VLAN ID among all the sub-VLANs. You can run a related command to configure VRRP Advertisement packets to be sent in a specified sub-VLAN. This prevents VRRP Advertisement packets from being broadcast in all sub-VLANs, reducing network bandwidth consumption. The configuration procedure is as follows: 1. Run the system-view command to enter the system view. 2. Run the interface vlanif vlan-id command to enter the VLANIF interface view. 3. Run the vrrp advertise send-mode { sub-vlan-id | all } command to configure a mode in which the master switch sends VRRP Advertisement packets in a super-VLAN. - sub-vlan-id: specifies the ID of a sub-VLAN where the master switch sends VRRP Advertisement packets. - all: indicates that the master switch sends VRRP Advertisement packets to all sub-VLANs in a super-VLAN. Note: The parameter all is not recommended. If all is configured, a super-VLAN broadcasts a VRRP Advertisement packet to all its sub-VLANs, which increases bandwidth usage.

Configure interface-based VLANs
Configuration of interface-based VLANs on CE switches is described on the right.

VLAN port types on the USG6000 series
According to their ability of identifying VLAN frames, the ports can be classified into Access ports, Trunk ports, and Hybrid ports.

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