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300-620 · Question #318

An engineer configures port-12 on Leaf-101 and Leaf-102 to connect to a new server. SVR-12. The new server will belong to EPG-12 and use encap VLAN-1212. The engineer configured port- 12 as a VPC…

The correct answer is D. Associate a domain with EPG-12 that is associated with VLAN-1212. To complete connectivity for a server configured with a VPC member port, EPG, and VLAN, the EPG must be associated with a domain that itself is associated with the specific VLAN encapsulation.

ACI Fabric Infrastructure

Question

An engineer configures port-12 on Leaf-101 and Leaf-102 to connect to a new server. SVR-12. The new server will belong to EPG-12 and use encap VLAN-1212. The engineer configured port- 12 as a VPC member port and statically bound the VPC member port to EPG-12. Which additional step must the engineer take to configure connectivity?

Options

  • ACreate a VPC Explicit Protection Group for EPG-12 and VLAN-1212.
  • BConfigure an LACP Interface Policy and apply it to EPG-12.
  • CSelect VLAN-1212 on the EPG-12 Interface Policy Group.
  • DAssociate a domain with EPG-12 that is associated with VLAN-1212.

How the community answered

(26 responses)
  • A
    8% (2)
  • B
    4% (1)
  • C
    8% (2)
  • D
    81% (21)

Why each option

To complete connectivity for a server configured with a VPC member port, EPG, and VLAN, the EPG must be associated with a domain that itself is associated with the specific VLAN encapsulation.

ACreate a VPC Explicit Protection Group for EPG-12 and VLAN-1212.

A VPC Explicit Protection Group is used for specific fault isolation scenarios, not for basic EPG-VLAN connectivity.

BConfigure an LACP Interface Policy and apply it to EPG-12.

Configuring an LACP Interface Policy is for link aggregation itself, and while it's usually part of a VPC setup, the question implies the VPC member port is already configured and focuses on EPG-VLAN binding, not the LACP itself.

CSelect VLAN-1212 on the EPG-12 Interface Policy Group.

You don't 'select' a VLAN directly on an EPG-12 Interface Policy Group; rather, the VLAN is part of a domain that is then associated with the EPG. The Interface Policy Group defines port-level settings, not EPG-VLAN mapping directly.

DAssociate a domain with EPG-12 that is associated with VLAN-1212.Correct

For an EPG to communicate using a specific VLAN encapsulation on a port, the EPG must be associated with a physical or VMM domain, and that domain must include the specific VLAN (or a pool containing it). This domain-EPG association provides the necessary context for the VLAN to be deployed on the leaf interface.

Concept tested: Cisco ACI EPG-to-domain and domain-to-VLAN association

Source: https://www.cisco.com/c/en/us/td/docs/dcn/aci/apic/6x/getting-started/cisco-aci-getting-started-guide-601/m-getting-started-epg.html

Topics

#EPG binding#VPC#VLAN encapsulation#Physical domain

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