Data Center Architectures Introduction Welcome! This page will help you quickly understand the key Data Center Architectures concepts. Let’s dive into the major areas we’ll cover: Traditional Architectures (Multi-Tier) IP-Fabric Architectures (Spine/Leaf) Layer 2 and Layer 3 Strategies Overlay Network vs. Underlay Network EVPN/VXLAN Basics and Purpose Let’s start with the foundational knowledge. We’ll go through each concept, and I’ll make sure the explanations are simple and to the point. 1. Traditional Architectures (Multi-Tier) What is it? Traditional data centers have a 3-tier architecture , where the network is split into three layers: Access Layer: This is where your end devices (servers, computers) connect to the network. Distribution Layer: Traffic from the Access Layer is aggregated here, and routing between subnets happens. Core Layer: This is the backbone, connecting the Distribution Layer to external networks and ensuring high...