Cisco ACI VMM Port Group Naming Convention

300-620 By islever Editorial Last updated

Short answer

A The port group must be named Prod|Apps-A|EPG-A following the Tenant|Application Profile|EPG naming convention.

Question

A network engineer configured a Cisco ACI fabric as follows: • An EPG called EPG-A is created and associated with a VMM domain called North. • The EPG-A is associated with BD-A and is in an application profile called Apps-A. • The BD-A is associated with VRF-1 in the Prod tenant. Which port group must be selected to place VMs in EPG-A?
  1. Prod|Apps-A|EPG-A Correct Answer
  2. Prod|Apps-A|North|EPG-A
  3. Prod|Business_Apps|BD-A|EPG-A
  4. Prod|VRF-1|Apps-A|EPG-A

Key Takeaways

It tests the ability to identify which components are included in the default vCenter port group naming scheme and distinguishes them from irrelevant network objects like VRFs or Bridge Domains.

This question tests the naming convention for VMware vCenter port groups when integrating Cisco ACI with a VMM domain. The correct name follows the pattern Tenant|Application Profile|EPG Name, excluding the VMM domain or Bridge Domain names.

Common mistake: Many candidates incorrectly include the VMM domain name (Option B) because they assume the domain is part of the path, but the VMM domain is only used for association, not naming.

Expert Analysis

Why the Answer Is Correct

The Cisco ACI integration with VMware vCenter creates port groups that follow a specific hierarchical naming convention by default. This convention consists of three parts: the Tenant name, the Application Profile name, and the EPG name. In this scenario, the Tenant is 'Prod', the Application Profile is 'Apps-A', and the EPG is 'EPG-A'. Combining these with the pipe separator results in 'Prod|Apps-A|EPG-A', making Option A the correct choice.

Why the Other Options Are Wrong

Option B includes 'North' (the VMM domain), which is incorrect because the VMM domain is a logical container for configuration but does not appear in the generated port group name. Option C uses 'Business_Apps' and 'BD-A', neither of which exist in the provided configuration or are part of the standard naming syntax. Option D includes 'VRF-1', which is a routing construct and has no bearing on the vCenter port group naming structure.

Community Comment Notes

Community consensus strongly supports Option A. One user noted that the port group name follows the tenant, application profile, and EPG name structure. Another user confirmed that the documentation supports this concatenation logic, reinforcing that the VMM domain is not part of the name.

Exam Strategy

When configuring ACI-VMM integration, remember that the port group name is derived strictly from the policy hierarchy (Tenant > App Profile > EPG). Do not confuse logical networking objects like BDs or VRFs with the policy naming components.

Frequently Asked Questions

Why is the VMM domain name not in the port group name?

The VMM domain is used for association and mapping, but the port group name is automatically generated using only the Tenant, Application Profile, and EPG names.

Does the Bridge Domain affect the port group name?

No, the Bridge Domain is associated with the EPG for Layer 2 connectivity but is not included in the vCenter port group naming string.

More 300-620 FAQ →

Community Votes

A
80%
B
20%

80% of anonymous learners picked answer A. Votes are pick records left by other test-takers — they are not the verified answer.

Discussion 3 contributions

Compiled from public community threads and reader submissions, lightly edited for clarity. Handles and vote tallies are shown as recorded, and comments reflect the views of individual contributors.

From public community threads 3

  1. prospio971 👍 2 Answered A
    EPG-A Port Group Name: -The port group for EPG-A in vCenter will follow the naming convention defined in the VMM domain configuration in Cisco ACI. -By default, the name includes the following components: Tenant Name Application Profile Name *EPG Name Example: Prod/Apps-A/EPG-A
  2. mdriraa 👍 2 Answered A
    The port group name is a concatenation of the tenant name, the application profile name, and the EPG name. https://www.cisco.com/c/dam/m/en_us/solutions/data-center-virtualization/application-centric-infrastructure/aci-virtualization-guide-chapter.pdf
  3. designated 👍 1 Answered B
    The Cisco documentation supports the answer: B. Prod|Apps-A|North|EPG-A

Reader comments & corrections

No reader corrections yet — spotted an error or have a note? Share it below.

Log in to comment, report an error, or add a note about this question.

Cisco ACI L2Out Loop-Free Topology Actions

S-grade

ACI Management and Data Plane Separation

S-grade

ACI Host Tracking ARP Request Count

S-grade

ACI VMM Domain Port Group Not Created: What Fix?

S-grade

← Back to 300-620 Study Guide