How to select a WAN interface through the web NMS on an AR router

Check whether the Layer 3 Ethernet interface is switched over to a Layer 2 Ethernet interface. The procedure of converting the Layer 2 mode of a physical interface to the Layer 3 mode is as follows:
1. Choose LAN access > LAN > Physical interface to enter the physical interface configuration page.
2. In the operation column of the physical interface list, click the icon at the right side of details corresponding to a desired physical interface to switch over the physical interface between Layer 2 mode and Layer 3 mode.
3. In the prompt dialog box, click Yes to confirm the switchover.

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