Fabric topology
The topological design of fabrics for data centers can vary widely. To accommodate diverse fabric structures, the Fabric Services System uses a modular, tiered approach to representing a fabric's hierarchical layers and their interconnections:
- Tier 1: leaf nodes, with edge-link connectivity
- Tier 2: spine nodes, which connect multiple leaf nodes together
- Tier 3: backbone nodes, which connect multiple fabrics together
- Tier 4: regional backbones, connecting backbone nodes together
This flexible, modular approach allows the Fabric Services System to model a wide range of topologies, grouping sets of leaves, spines, and backbone nodes in various ways and distributing connections between and within these groups in whichever way operators deem most efficient.