Cisco ACI is a data center network architecture that enables scalable, policy-based automation of network connectivity and services. The Cisco ACI architecture consists of the following components:
• Cisco APIC: The Cisco APIC is the centralized controller for the Cisco ACI fabric. It provides a single point of configuration and policy enforcement for the Cisco ACI fabric.
• Cisco ACI Fabric: The Cisco ACI fabric is a high-performance, low-latency, lossless Ethernet network that connects the Cisco APIC to the leaf and spine switches in the Cisco ACI fabric.
• Cisco ACI Leaf Switches: The Cisco ACI leaf switches are the edge switches in the Cisco ACI fabric. They provide connectivity to external networks and devices, and host endpoints such as servers and storage devices.
• Cisco ACI Spine Switches: The Cisco ACI spine switches are the core switches in the Cisco ACI fabric. They provide high-bandwidth, low-latency connectivity between the leaf switches in the Cisco ACI fabric.