Keysight PXIe Chassis Family User Guide 115
Changing and Restoring the M9018 PCIe Switch Fabric Configuration PCIe Link Configuration
Changing and Restoring the M9018 PCIe Switch Fabric Configuration
PCIe link configuration refers to how the chassis PCIe Switch Fabric is configured
to connect PCI Express signals between slot 1, the system controller slot, and the
other chassis slots. For a review of the supported PCIe link configurations, please
see the “Interactive Block Diagram” on page 14. The check boxes in the upper
left corner of the block diagram can be used to view each PCIe link configuration.
As shown on the block diagram, the M9018B chassis ships from the factory in
“2-Link Configuration: 1x8”. This configuration, referred to as “1x8”, provides one
x8 PCIe link from the system controller slot to the PCIe Switch Fabric. Use the
1x8 configuration when using the M9021A PCIe Cable Interface module
connected to an external controller using a PCIe host adapter such as the
M9048A. This link can be routed by the PCIe Switch Fabric to the chassis slots as
either x4 or x8 links as shown on the block diagram.
The other supported PCIe link configurations are:
- 2-Link Configuration: 2x8 — Referred to as “2x8”, this configuration provides two
x8 links from the system controller slot to the PCIe Switch Fabric. Link 2 can
be routed by the PCIe Switch Fabric to slots 2-9, while Link 1 can be routed to
slots 10-18.
- 4-Link Configuration: 4x4 — Referred to as “4x4”, this configuration provides four
x4 links from the system controller slot to the PCIe Switch Fabric. Link 1 can
be routed by the PCIe Switch Fabric to slots 10-14, Link 2 can be routed to
slots 15-18, Link 3 can be routed to slots 2-5, and Link 4 can be routed to
slots 6-9.
The PCIe Switch Fabric Configurator tool is for use only on the
M9018A and M9018B chassis. It will not run on the M9010A and
M9019A chassis.
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