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300-620 · Question #251

Refer to the exhibit. An engineer associated EPG-1 with a VMM domain called VMware/west. The VLAN pool west-VLP is configured in VMware/west, and the VMware/west is associated with the AEP called VMwa

The correct answer is B. Include VLANs in the VMware/west-VLP.. To resolve the issue of a port group failing to be created in vCenter, the associated VLAN pool must contain defined VLANs for ACI to use for assignment.

ACI Integrations

Question

Refer to the exhibit. An engineer associated EPG-1 with a VMM domain called VMware/west. The VLAN pool west-VLP is configured in VMware/west, and the VMware/west is associated with the AEP called VMware/west-AEP. The corresponding port group failed to be automatically created in vCenter. Which action must the engineer take to resolve the missing port group?

Exhibit

300-620 question #251 exhibit

Options

  • AConfigure VMware/west-AEP with the correct vCenter credentials.
  • BInclude VLANs in the VMware/west-VLP.
  • CAdd a static range to VMware/west-VLP.
  • DAssociate VMware/west-AEP with a physical domain.

How the community answered

(27 responses)
  • A
    7% (2)
  • B
    63% (17)
  • C
    7% (2)
  • D
    22% (6)

Why each option

To resolve the issue of a port group failing to be created in vCenter, the associated VLAN pool must contain defined VLANs for ACI to use for assignment.

AConfigure VMware/west-AEP with the correct vCenter credentials.

Configuring vCenter credentials is typically done at the VMM domain level to establish communication, not directly on the AEP, and the problem implies a VMM domain exists but fails at port group creation.

BInclude VLANs in the VMware/west-VLP.Correct

For Cisco ACI to automatically create port groups in vCenter through a VMM domain, the associated VLAN pool (west-VLP) must be populated with specific VLANs. If the VLAN pool is configured but lacks any defined VLANs, ACI cannot assign a VLAN ID to the port group it attempts to create, leading to the creation failure.

CAdd a static range to VMware/west-VLP.

Adding a static range to a VLAN pool is for specific, non-dynamic VLAN assignments, but the fundamental requirement for port group creation is having any VLANs included in the pool for dynamic assignment.

DAssociate VMware/west-AEP with a physical domain.

Associating an AEP with a physical domain is for linking physical interfaces to the ACI fabric, not directly for resolving VMM domain port group creation issues in vCenter.

Concept tested: ACI VMM domain VLAN pool configuration

Source: https://www.cisco.com/c/en/us/td/docs/dcn/aci/apic/5x/virtual-networking/cisco-aci-virtual-networking-guide-501/m-vmware-vcenter-integration.html

Topics

#VMM integration#vCenter port group#VLAN pool#Troubleshooting

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