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Routing & Switching · Advanced

StackWise Virtual

Cisco Catalyst 9000 technology that combines two switches into one logical switch with a single control plane.

Definition

StackWise Virtual (successor to VSS) uses a StackWise Virtual Link between chassis and dual-active detection links. Downstream devices form multichassis EtherChannels across both switches, eliminating STP blocking and FHRPs.

Example

stackwise-virtual / domain 1

Exam tip

Unlike vPC, StackWise Virtual has one control plane, so FHRP is unnecessary.

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