object (MO). An MO can represent a concrete object,
such as a switch, an adapter, a power supply, or a logical
object, such as an application profile, an endpoint group,
or an error message. All the components of the ACI
fabric can be represented as managed objects.
Figure 9-3 provides an overview of the MIT and its
elements.
Figure 9-3 Cisco ACI Management Information Tree
The MIT hierarchical structure starts at the top with the
root object and contains parent and child nodes. Each
node in the tree is an MO, and each object in the fabric
has a distinguished name (DN). The DN describes the
object and specifies its location in the tree. The following
managed objects contain the policies that control the
operation of the fabric:
APICs: These are the clustered fabric controllers that provide
management, application, and policy deployment for the fabric.
Tenants: Tenants represent containers for policies that are grouped
for a specific access domain. The following four kinds of tenants are
currently supported by the system:
User: User tenants are needed by the fabric administrator to cater
to the needs of the fabric users.
Common: The common tenant is provided by the system and can
be configured by the fabric administrator. This tenant contains
policies and resources that can be shared by all tenants. Examples
of such resources are firewalls, load balancers, and intrusion
detection systems.
Infra: The infra tenant is provided by the system and can be
configured by the fabric administrator. It contains policies that
manage the operation of infrastructure resources.
Management: The management tenant is provided by the system
and can be configured by the fabric administrator. This tenant
contains policies and resources used for in-band and out-of-band
configuration of fabric nodes.