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.