300-320 · Question #18
What is an advantage of using the vPC feature in a data center environment?
The correct answer is C. The control plane and management plane remain separate. vPC (virtual Port Channel) allows two Cisco Nexus switches to present themselves as a single logical port-channel to a downstream device, eliminating Spanning Tree blocking ports and enabling full active-active bandwidth utilization. Critically, each vPC peer switch retains its…
Question
What is an advantage of using the vPC feature in a data center environment?
Options
- AVSS is a requirement.
- BMultiple instances of control plane are formed.
- CThe control plane and management plane remain separate.
- DCisco FabricPath technology does not have to be configured.
How the community answered
(43 responses)- A2% (1)
- B5% (2)
- C91% (39)
- D2% (1)
Explanation
vPC (virtual Port Channel) allows two Cisco Nexus switches to present themselves as a single logical port-channel to a downstream device, eliminating Spanning Tree blocking ports and enabling full active-active bandwidth utilization. Critically, each vPC peer switch retains its own independent control plane and management plane-they are not merged. This separation means a control or management plane failure on one switch does not affect the other. Option A is wrong-VSS is NOT required for vPC; they are different technologies (VSS is IOS-based). Option B is wrong-vPC does not create multiple control plane instances; each switch keeps its own single control plane. Option D is misleading-vPC can work without FabricPath; FabricPath is an optional enhancement.
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