The X4522 Ethernet adapter supports both in-band and out-of-band communication with the host.
Inband communication is provided over the PCIe bus. Link and speed are set during PCIe enumeration, with eight lanes allocated to the X4 device. The sensor values can be read using the sensors command from the lm_sensors package in your Linux distribution.
For out-of-band communications, the platform management subsystem on the adapter uses Platform Management Components Infrastructure (PMCI) conformance standards and command implementations. Adapter manageability is supported through the platform level data model (PLDM) and network controller sideband interface (NC‐SI) specifications. Limited link, self-test, and diagnostics is also available through the unified extensible firmware interface (UEFI) interface.
The X4522 Ethernet adapter supports the following manageability protocols:
- PLDM
- NC‐SI
The X4522 Ethernet adapter supports the following manageability transports:
- MCTP SMBus
- MCTP PCIe VDM