Does VLANIF interfaces of the AR router support the PPPoE client

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The PPPoE client cannot be configured on a VLANIF interface, but the PPPoE server can be configured on the VLANIF interface.

Other related questions:
Does the VLANIF interface support PPPoE Client on the AR device?
VLANIF interface supports configuring PPPoE Server, does not support configuring PPPoE Client.

Which interfaces of the AR router support PPPoE dialup
1. A VT interface must be bound to an interface so that the PPPoE server can be implemented. The PPPoE server can be configured on a physical Ethernet interface, a PON interface, a VLANIF interface, or a virtual Ethernet interface. 2. The dialer interface must be bound to an interface so that the PPPoE client can be implemented. The PPPoE client can be configured on a physical Ethernet interface, a PON interface, or a virtual Ethernet interface. The physical Ethernet interfaces refer to WAN-side Ethernet interfaces. LAN-side Ethernet interfaces do not support PPPoE.

Does the VLANIF interface support IPSec on the AR
The VLANIF interface on the Huawei AR router does not support IPSec.

Does the AR router support PPPoE automatic re-dialup
When the AR router functions as the PPPoE or PPPoEoA client, it continuously sends connection requests to the PPPoE or PPPoEoA server. When the maximum number of connection attempts is reached during the quiet period, the PPPoE or PPPoEoA server does not receive requests from the client. The PPPoE or PPPoEoA server receives connection requests only after the quiet period is exceeded. During the quiet period, the client repeatedly sends connection requests to the PPPoE or PPPoEoA server, wasting resources. The quiet period and retransmission count during the silent period can be configured to solve this problem. When the retransmission count is exceeded during the quiet period, the client stops sending connection requests. [Huawei] interface dialer 1 [Huawei-Dialer1] dialer user userb [Huawei-Dialer1] dialer retry limit 20 quiet-period 10 //Set the quiet period to 10s and the retransmission count to 20.

Can an AR router sub-interface be bound to a PPPoE server and how to configure the AR router sub-interface to bound it to a PPPoE server
The sub-interfaces of AR routers are supported to be bound to a PPPoE server. You can perform the following steps to bind a sub-interface of the AR router to a PPPoE server: 1. Configure the interface virtual template. a. Run the system-view command to enter the system view. b. Run the interface virtual-template vt-number command to create an interface virtual template view or enter the existing interface virtual template view. c. Run the ip address ip-address { mask | mask-length } command to configure the IP address of the interface virtual template. 2. Configure the termination sub-interface. a. Run the system-view command to enter the system view. b. Run the interface { ethernet | gigabitethernet } interface-number.subinterface-number command to enter the view in which the Ethernet sub-interfaces can be specified. c. Run the control-vid vid dot1q-termination command to specify the mapping relationship between the control VLANs and the termination sub-interfaces. Note: This command is only supported in V200R001C00, V200R001C01, and V200R002C00. This command does not need to be configured in later versions. d. Configure the termination sub-interface. Note: VLAN packets can be divided into Dot1q packets (with one VLAN tag) and QinQ packets (with two VLAN tags) based on the number of VLAN tags carried by the packets. Termination sub-interfaces are divided into two corresponding types: Dot1q termination sub-interfaces used to terminate Dot1q packets and QinQ termination sub-interfaces used to terminate QinQ packets. In V200R003C00 and later versions, PPPoE supports both Dot1q packets and QinQ packets. Users can run either of the following two commands to configure the termination function on sub-interfaces based on actual requirements. However, in versions earlier than V200R003C00, PPPoE does not support QinQ packets. Users can only configure the termination function for packets carrying one VLAN tag on sub-interfaces. - Run the dot1q termination vid command to configure the termination function for packets carrying one VLAN tag on the sub-interface. - Run the qinq termination pe-vid pe-vid ce-vid command to configure the termination function of the sub-interface for packets carrying two VLAN tags. e. Run the arp broadcast enable command to enable the ARP broadcast function of the sub-interface. Note: If the ARP broadcast function of a sub-interface is enabled or disabled, the state of the sub-interface changes to Down and then to Up, which may result in a route flapping on the entire network and affect the running services. 3. Run the pppoe-server bind virtual-template vt-numbercommand to bind the specified virtual template to the Ethernet sub-interface and enable the PPPoE server function on the Ethernet sub-interface. Note: The PPPoE Server function is not enabled on sub-interfaces by default. After the PPPoE server is configured, the PPPoE client dials up to connect to the PPPoE server. After the connection is established, you can run the display pppoe-server session { all | packet } on the device to check the PPPoE session status and statistics of the PPPoE server.

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