Data Sheet

System Manageability—Ethernet Controller I210
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The NC-SI over MCTP spec defines two types of MCTP message types: NC-SI (0x2) and Ethernet (0x3).
The I210 supports both messages. When used only for control, then only the NC-SI (0x2) message
type is supported.
In addition to the above message types supported by the I210, the PCIe based VDM message type is
also supported over PCIe to support ACL commands.
10.7.1.2 MCTP Usage Model
The I210 supports NC-SI over MCTP protocol over the PCI Express and SMBus busses. The I210 can
connect through MCTP to a MC or the ME engine in the chipset as described in Figure 10-8.
Figure 10-8. MCTP Connections of the I210
10.7.2 NC-SI to MCTP Mapping
The I210 LAN port (mapped as an NC-SI channel) is mapped to a single MCTP endpoint on SMBus and
to the same endpoint over PCIe.
PCIe Bus
SMBus
NIC
External
Network
MCTP over SMBus
BMC/ME
OS
MCTP VDM over PCIe
OS Traffic