Which of the following virtual devices will NOT fail over, if its interface fails in a VSX High Availability configuration?

Question

Options

• AManagement Virtual System Interfaces
• BExternal Virtual Router
• CVirtual Switch
• DVirtual System with VLAN Interfaces
• EVirtual System with dedicated interfaces

• A
  10% (5)
• B
  6% (3)
• C
  80% (40)
• D
  2% (1)
• E
  2% (1)

Explanation

In VSX High Availability, a Virtual Switch operates at Layer 2 (bridging/switching) and does not maintain stateful connections or hold IP routing state - the two things that failover is designed to protect. Because it has no "active/standby" role to hand off, it simply has no failover mechanism to trigger when an interface fails.

The distractors (A, B, D, E) all fail over because they each maintain state that must be preserved during a failure: the Management Virtual System holds management-plane sessions, the External Virtual Router maintains routing tables and gateway state, and both types of Virtual Systems (VLAN-based and dedicated-interface) track active security/firewall connections - all of which VSX HA is designed to protect via synchronization and failover.

Memory tip: "Layer 2 devices don't have a failover side to switch to." A Virtual Switch just bridges frames - no IP state, no stateful sessions, nothing to hand off - so VSX HA simply has nothing to fail over for it.

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