This topic explains the main components of an ACI fabric Virtual Machine Manager (VMM) domain, including their roles in configuring connectivity policies for virtual machine controllers.
ACI fabric Virtual Machine Manager (VMM) domains are used to configure connectivity policies for virtual machine controllers. The main components of a VMM domain policy include:
-
Virtual Machine Manager Domain Profile : Groups VM controllers with similar networking policy requirements, allowing them to share VLAN pools and application endpoint groups (EPGs). The APIC communicates with the controller to publish network configurations such as port groups that are then applied to the virtual workloads.
-
EPG Association : Endpoint groups regulate connectivity and visibility among endpoints within the VMM domain policy. The APIC pushes these EPGs as port groups into the VM controller. An EPG can span multiple VMM domains, and a VMM domain can contain multiple EPGs.
-
Attachable Entity Profile Association : Associates a VMM domain with the physical network infrastructure. An attachable entity profile (AEP) is a network interface template that enables deploying VM controller policies on a large set of leaf switch ports. An AEP specifies which switches and ports are available, and how they are configured.
-
VLAN Pool Association : A VLAN pool specifies the VLAN IDs or ranges used for VLAN encapsulation that the VMM domain consumes.
-
Credential : Associates a valid VM controller user credential with a APIC VMM domain.
-
Controller : Specifies how to connect to a VM controller that is part of a policy enforcement domain, such as a VMware vCenter.
Additional Information about VMM Domain Components
A single VMM domain can contain multiple instances of VM controllers, but they must be from the same vendor (for example, from VMware or from Microsoft).