Which two actions occur when an EPG is being validated on a switch? (Choose two.)

Question

Options

• AIDs assignment validation
• BVLAN validation
• Cpath validation
• DBD, CTX configured validation

• A
  6% (2)
• B
  92% (33)
• D
  3% (1)

Explanation

When an EPG is deployed to a leaf switch in Cisco ACI, the fabric performs VLAN validation (B) to confirm that the VLAN encapsulation associated with the EPG exists within a valid VLAN pool and is properly allocated on that switch, and path validation (C) to verify that the physical or logical paths (ports/port-channels) tied to the EPG are correctly defined and reachable on that switch. These two checks ensure the EPG can actually be instantiated and carry traffic on the hardware.

Option A (IDs assignment validation) is a distractor - ID assignment occurs earlier during the policy resolution and provisioning phase, not as a distinct EPG validation step on the switch itself. Option D (BD, CTX configured validation) refers to Bridge Domain and VRF configuration, which are validated at the fabric policy level before the EPG reaches the switch, making it a separate concern from switch-level EPG validation.

Memory tip: Think "VP" - an EPG needs a VLAN to tag traffic and a Path to forward it. No VLAN, no tag; no path, no port - both must be validated on the switch before the EPG works.

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