Which stacking technology is a dual control plane stacking that is supported by CX switches?

Question

Options

• ABack Plane Stacking
• BIRF
• CFront Plane Stacking
• DVSX

• A
  3% (1)
• B
  6% (2)
• D
  91% (29)

Explanation

VSX (Virtual Switching Extension) is HPE Aruba's stacking solution designed specifically for CX switches, and its defining characteristic is the dual control plane architecture - each chassis maintains its own independent control plane, enabling hitless failover and eliminating a single point of failure.

Why the distractors are wrong:

• A. Back Plane Stacking uses a dedicated stacking bus and a single shared control plane, not dual; it also typically refers to chassis-based or legacy switch designs.
• B. IRF (Intelligent Resilient Framework) is HPE's stacking technology for Comware-based switches (e.g., 5700/5940 series), not CX switches, and it operates on a single merged control plane.
• C. Front Plane Stacking uses standard front-panel ports for stacking links but still relies on a single control plane - it does not meet the dual control plane requirement.

Memory tip: Think "VSX = Very Separate control planes on CX" - the two words "Virtual" and "Extension" hint that each switch stays its own entity (separate control plane) while extending a unified data plane to the rest of the network.

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