Virtual switch

Q: How deeply does Acing the CCNA Exam: Volume 1 Fundamentals and Protocols cover virtual switch?

Explains VLAN-based separation, frame-flooding boundaries, and inter-VLAN routing, but does not detail switch internals.

As explained in Acing the CCNA Exam: Volume 1 Fundamentals and Protocols

A virtual switch is a logically defined switching instance that operates as an independent switch within shared physical switching hardware.

A virtual switch is a logically defined switching instance created by assigning a physical switch’s ports to a VLAN. Each instance operates as a separate Layer 2 broadcast domain, even though the hardware is shared. section 12.1.2

A switch does not forward or flood frames between VLANs. Hosts in different virtual switches therefore require Layer 3 communication through a router, and CCNA practice generally assumes one subnet per VLAN. section 12.1.2 section 12.5

Three virtual switches on SW1

Assigning SW1 ports G0/0–G0/3 to VLAN 10, G1/0–G1/3 to VLAN 20, and G2/0–G2/3 to VLAN 30 creates three separate virtual switches. A broadcast entering VLAN 10 remains within VLAN 10.

How Acing the CCNA Exam: Volume 1 Fundamentals and Protocols covers it

Cover of Acing the CCNA Exam: Volume 1 Fundamentals and Protocols

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Also explained in

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Acing the CCNA Exam: Volume 2 Advanced Networking and SecurityA virtual switch is software that forwards network frames between virtual machines and physical network interfaces.
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Practical Automation with PowerShell: Effective scripting from the console to the cloudA virtual switch is software-based network switching infrastructure that connects virtual machines to one another or to physical networks.

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Related concepts

virtual network interfaceuses · A virtual network interface is a software-defined interface through which a virtualized or isolated system sends and receives network traffic.
network switchkind of · A network switch is a device that connects devices within a local network and selectively forwards data-link-layer frames to their intended destinations.

This explainer was generated by Manning's knowledge graph from the text of Acing the CCNA Exam: Volume 1 Fundamentals and Protocols. The section links point to the parts of the book it draws on.