Refer to the exhibit. What happens to access interfaces where VLAN 222 is assigned?

Question

Exhibits

Options

• ASTP BPDU guard is enabled
• BA description "RSPAN" is added
• CThey are placed into an inactive state
• DThey cannot provide PoE

• A
  6% (1)
• B
  6% (1)
• C
  71% (12)
• D
  18% (3)

Explanation

VLAN 222 as an RSPAN VLAN – Explanation

When a VLAN is designated as an RSPAN (Remote Switched Port Analyzer) VLAN, it is reserved exclusively for mirrored traffic transport across the network. Any access port assigned to an RSPAN VLAN is automatically placed into an inactive/suspended state because RSPAN VLANs cannot carry normal user traffic - they exist solely to carry copied/monitored traffic between switches. This is a built-in Cisco IOS protection mechanism to prevent accidental data forwarding on a monitoring VLAN.

Why the distractors are wrong:

• A (STP BPDU Guard): BPDU Guard is a separate STP security feature applied via PortFast configuration, not triggered by RSPAN VLAN assignment.
• B (Description "RSPAN"): While the VLAN itself is configured with the remote-span keyword, no automatic description is pushed to access interfaces.
• D (Cannot provide PoE): PoE capability is a hardware/port feature unrelated to VLAN type assignments; RSPAN has no effect on power delivery.

Memory Tip: Think of RSPAN VLANs as a "one-way mirror hallway" - regular traffic (people) cannot walk through it. Any door (access port) connected to that hallway gets locked/inactive automatically by the switch.

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