Keysight PXIe Chassis Family User Guide 117Changing and Restoring the M9018 PCIe Switch Fabric Configuration PCIe Link ConfigurationNote that the PCIe Switch Fabric is undefined between the times when thechassis is powered on and when the PCIe Reset signal occurs.The position of the virtual switch depends on the selection you make using theConfigurator program. Because the virtual switch position is stored in chassisnon-volatile memory, the switch position persists through chassis power cycles.Selecting a Link ConfigurationUse Table 7 to determine the fabric link settings for a single chassis or for amaster chassis (a master chassis cascades from its peripheral slot(s) to one ormore secondary chassis). Use Table 8 for the fabric link settings for secondarychassis.Table 7 Single or Master Chassis Fabric Link Settings(see next page for notes)Changing the PCIe fabric to one that is incompatible with yoursystem controller can result in you no longer being able toconnect with your M9018 chassis from your controller. Refer tothe Additional Fabric Information section below for information oncorrecting this situation.If you are using the M9018A/B in a multiple chassis arrangement,make certain you have the latest chassis firmware (with fabriclinks) installed. Chassis firmware updates are available at:www.keysight.com/find/M9018A.Single Chassis or Master Chassis Configuration 1x8 (FactoryDefaul t) Link1x8 (Gen1) Link2x8 Link 4x4 LinkExternal controller connected to an M9021A moduleinstalled in slot 1.See Note 3M9036A or M9037A PCIe Embedded Controller in slot 1. See Note 1 See Note 2 Other non-Keysight Embedded Controller in slot 1. See Note 1 See Note 4
