Does the Ethernet LAN interface card of an AR router provide Layer-2 interfaces or Layer-3 interfaces

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All interfaces provided by the Ethernet LAN interface card of an AR router are Layer-2 Ethernet interfaces. Ethernet LAN cards of AR routers include the following models:
8FE1GE: a WSIC card that provides 8 FE interfaces and a GE interface
9ES2: a WSIC card that provides 8 FE electrical interfaces and a GE electrical interface
24GE: an XSIC card that provides 24 GE electrical interfaces
4GE-2S: a WSIC card that provides 4 GE optical interfaces
4ES2G-S: a SIC card that provides 4 GE electrical interfaces
4ES2GP-S: a SIC card that provides 4 GE electrical interfaces

Other related questions:
Does an AR router support an interface being switched over between Layer 2 and Layer 3
The following AR routers support an interface being switched over between Layer 2 and Layer 3. By default, Ethernet interfaces are Layer 2 interfaces. Run the undo portswitch command to switch the interfaces from Layer 2 mode to Layer 3 mode, and run the portswitch command to switch the interfaces back to Layer 2 mode. V200R006C00 and earlier versions: - AR150 and AR200 series: Eth0/0/0 - AR120-S series: Eth0/0/0~Eth0/0/3 - AR150-S, AR160-S, and AR200-S series (except for AR151-S2): Eth0/0/0 - AR151-S2: GE0/0/0 - AR160 series: GE0/0/0 - AR1220F: Eth0/0/0~Eth0/0/7 - AR2201-48FE, AR2202-48FE, and AR2201-48FE-S: Eth0/0/0 and Eth0/0/47 V200R007C00: - AR120 and AR150 series, AR120-S series, AR151-S, AR151W-P-S, and AR151G-U-S: Eth0/0/0~Eth0/0/3 - AR160 series, AR509G-L-D-H, AR110-S series, AR151-S2 and AR160-S series: GE0/0/0~GE0/0/3 - AR200 series, AR1220, AR1220V, AR1220W, AR1220VW, AR1220F, AR200-S series, AR1220-S, AR1220W-S, and AR1220F-S: Eth0/0/0~Eth0/0/7 - AR1220C, AR1220E, AR1220EV, AR1220EVW, and AR1220E-S: GE0/0/0~GE0/0/7 - AR2201-48FE and AR2202-48FE: Eth0/0/0~Eth0/0/47 - AR2204-51GE-P: GE0/0/3~GE0/0/50 - AR2204-27GE-P, AR2204-27GE, and AR2201-48FE-S: GE0/0/3~GE0/0/26 V200R008C00: - AR120 (except for AR129CGVW-L) and AR150 series, AR120-S series, AR151-S, AR151W-P-S, and AR151G-U-S: Eth0/0/0~Eth0/0/3 -AR100 series, AR160 series, AR129CGVW-L, AR503EW, AR503EDGW-Lc, AR509CG-Lt, AR509CG-Lc, AR509G-Lc, AR515GW-LM9-D and AR509G-L-D-H, AR100-S series, AR110-S series, AR151-S2 and AR160-S series: GE0/0/0~GE0/0/3 - AR200 series, AR1220, AR1220V, AR1220W, AR1220VW, and AR1220F, AR200-S series, AR1220-S, AR1220W-S, and AR1220F-S series: Eth0/0/0~Eth0/0/7 - AR1220C, AR1220E, AR1220EV and AR1220EVW, and AR1220E-S: GE0/0/0~GE0/0/7 - AR2201-48FE, AR2202-48FE, and AR2201-48FE-S: Eth0/0/0 and Eth0/0/47 - AR2204-51GE-P, AR2204-51GE-R, and AR2204-51GE: GE0/0/3~GE0/0/50 - AR2204-27GE-P and AR2204-27GE: GE0/0/3~GE0/0/26 At present, the interfaces of all cards do not support Layer 2 and Layer 3 interface switchover.

Configure a LAN interface as a Layer 3 interface
A LAN interface cannot be directly configured as Layer 3 interface, and Layer 3 functions are implemented via the VLANIF interface. The VLANIF interface is a logical Layer 3 interface. After an IP address is configured for the VLANIF interface, the device will add the MAC address and VID entry of the VLANIF interface to a MAC address table, and sets the Layer 3 forwarding mark to a bit for the entry. If the destination MAC address of a packet matches the entry, the packet will be forwarded to Layer 3 to implement Layer 3 interconnection between VLANs.

What interfaces are provided on the AR that support VRRP
Interfaces that support VRRP include the Layer 3 Ethernet interface, VLANIF interface, Layer 3 Eth-Trunk interface, Ethernet subinterface, and Eth-Trunk subinterface.

Whether 8GE WSIC interface cards are Layer 2 or Layer 3 ones
The 8GE WSIC interface card, short for 8GE, provides eight Gigabit RJ45 Ethernet interfaces, which are all Layer 3 interfaces and support Layer 8/Layer 3 switchover. By default, they work in Layer 3 mode. Perform as follows for switchover: [Layer 3 to Layer 2] In the interface view, run the portswitch command to switch from Layer 3 mode to Layer 2 mode. Before switchover, clear all Layer 3 service configurations of the interface. [Layer 2 to Layer 3] In the interface view, run the undo portswitch command to switch to Layer 3 mode. Before switchover, clear all configurations, excluding default ones, of the interface.

Whether 8GEF WSIC interface cards are Layer 2 or Layer 3 ones
The 8GEF WSIC interface card provides eight Gigabit SFP interfaces. SFP optical transceivers must be installed on the SFP interfaces for optical fiber connection. The optical interfaces provided by the 8GEF interface card support Layer 2/Layer 3 switchover and work in Layer 3 by default. Perform as follows for switchover: [Layer 3 to Layer 2] In the interface view, run the portswitch command to switch from Layer 3 mode to Layer 2 mode. Before switchover, clear all Layer 3 service configurations of the interface. [Layer 2 to Layer 3] In the interface view, run the undo portswitch command to switch to Layer 3 mode. Before switchover, clear all configurations, excluding default ones, of the interface.

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