Is active/active HA supported in all interface modes?

Active/active high availability (HA) is not supported in all interface modes primarily due to the architectural and operational differences among modes. In general, various interface modes—like Layer 2 (L2), Layer 3 (L3), and vWire—have different designs and purposes that can affect the implementation of HA.

In L2 mode, traffic is typically sent through a switch fabric which relies on multi-pathing for redundancy and traffic handling. This operational model can create bottlenecks or conflicts when attempting to achieve active/active configurations, as both devices may try to manage the same traffic simultaneously, leading to potential loops or dropped packets.

In contrast, vWire mode functions similarly to a transparent bridge and allows for more flexibility in traffic handling, but still does not guarantee that active/active configurations can be efficiently implemented across all scenarios.

Therefore, while multiple configurations can exist in different modes, the nature of active/active HA requires specific support and functionality that is not universally available across all interface modes. This makes the assertion that active/active HA is supported in all interface modes inaccurate. Thus, the correct answer is that it's false.