PCI Express Fabric Topology

A fabric is composed of point-to-point Links that interconnect a set of components – an example fabric topology is shown in Figure 1-2. This figure illustrates a single fabric instance referred to as a hierarchy – composed of a Root Complex (RC), multiple Endpoints (I/O devices), a Switch, and a PCI Express to PCI/PCI-X Bridge, all interconnected via PCI Express Links.

Figure 1-2: Example Topology