Tier Architecture

Tier Architecture ( Networking ): => Hierarchical Layered Model

• 1-Tier: one physical layer e.g. Fixed and/or modular chassis switches
• 2-Tier: Combined Core / Distribution Layer and Access Layer e.g.  Spine / Leaf
• 3-Tier: Core Layer, Distribition Layer, Access Layer e.g. Spine / Leaf / Access switches