• Point to Point links von jedem gerät zu einem PCIe switch

  • a lane is a pair of differential wires

  • a link is two of those lines .. one for rx and one for tx

  • man gewinnt mehr speed, indem man links mit mehreren parelellen lanes verwendet. (x8, x16, x32)

  • PCIe implements the lower layers of the OSI Modell

  • a PCIe Switch is defined as multiple virtual PCI-to-PCI Bridges in one chip

    • which have direkt pci bus links to a PCIe device
    • those bridges are connected to “one bus” internally
  • there are ARI = Alternative Routing-ID Interpretation