350-401 Question 89
Select 3A network engineer is configuring a Cisco virtual switching system (VSS) for redundancy and scalability in the network. The engineer wants to ensure that the two physical switches operate as a single logical switch while maintaining high availability. Which of the following are critical requirements for VSS configuration?
- A
Both switches must run the same IOS version and feature set.
- B
The switches must be connected using Virtual Switch Link (VSL).
- C
Each switch must operate independently with its own control plane.
- D
The same domain ID must be configured on both switches.
- E
VSS requires a dedicated management VLAN for inter-switch communication.
Show answer and explanation
Correct answers: A, B, D
Explanation
To configure a Cisco Virtual Switching System (VSS), both switches must run the same IOS version and feature set, be connected via a Virtual Switch Link (VSL), and have the same domain ID configured. These are foundational requirements for the two physical switches to operate as a single logical switch. VSS eliminates the need for a dedicated management VLAN and uses a single active control plane for simplified management and high availability.
- A. Correct.
Correct: Both switches must run the same IOS version and feature set to ensure compatibility and proper functionality in a VSS environment.
- B. Correct.
Correct: The Virtual Switch Link (VSL) is a critical component that connects the two physical switches, allowing them to operate as a single logical switch.
- C. Incorrect.
Incorrect: In VSS, only one control plane is active, and the other operates as a standby. This ensures seamless failover and unified operations.
- D. Correct.
Correct: Both switches must be configured with the same domain ID to establish and maintain the VSS configuration.
- E. Incorrect.
Incorrect: VSS does not require a dedicated management VLAN. The VSL handles communication between the switches, and a specific management VLAN is not mandated.