Where does the VIP for the VPC come from?

Question

Options

• Aassigned by Cisco ARC from the management tenant IP space.
• Ballocated from the VPC domain number assigned to the VPC peers.
• CDHCP from the infra TEP pool leaf portion.
• DDHCP from the infra TEP pool VIP portion.

• C
  7% (1)
• D
  93% (13)

Explanation

In Cisco ACI, when two leaf switches form a VPC (Virtual Port Channel) pair, they share a single virtual VTEP (tunnel endpoint) IP - the VIP - that represents the pair as one logical entity. This VIP is dynamically assigned via DHCP from the dedicated VIP portion of the infra TEP pool, which APIC pre-carves specifically for VPC pairs, separate from the addresses used by individual leaf nodes.

Why the distractors are wrong:

• A is wrong because "Cisco ARC" and the management tenant IP space have no role in assigning VPC VIPs - the infra TEP pool is entirely separate from management addressing.
• B is wrong because the VPC domain number is purely an administrative identifier for the peer relationship, not an IP address space from which addresses are drawn.
• C is the most tempting distractor - the infra TEP pool does use DHCP, but the leaf portion supplies individual per-leaf VTEP addresses, not the shared VIP. The pool is split into distinct sections for a reason.

Memory tip: Match the word - the VIP for the VPC comes from the VIP portion of the TEP pool. If you remember that ACI deliberately carves a separate VIP sub-pool (rather than reusing leaf addresses), C vs. D becomes easy to distinguish on exam day.

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