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Intel® 82575EB Gigabit Ethernet Controller Manageability

Network management is an increasingly important requirement in today's networked computer environment. Software-based management applications provide the ability to administer systems while the operating system is functioning in a normal power state (not in a pre-boot state or powered-down state). The Intel® System Management Bus (SMBus) Interface and the Network Controller - Sideband Interface (NC-SI) for the 82575EB fills the management void that exists when the operating system is not running or fully functional.

This is accomplished by providing a mechanism by which manageability network traffic can be routed to and from a management controller. The 82575EB provides two different and mutually exclusive bus interfaces for manageability traffic. The first is the Intel® proprietary SMBus interface; several generations of Intel® Ethernet controllers have provided this same interface that operates at speeds of up to 1 MHz.

The second interface is NC-SI, which is a new industry standard interface created by the DMTF specifically for routing manageability traffic to and from a management controller. The NC-SI interface operates at 100 Mb/s full-duplex speeds.


This document describes the supported management interfaces and hardware configurations for platform system management. It describes the interfaces to an external Baseboard Management Controller (BMC), the partitioning of platform manageability among system components, and the functionality provided by the 82575EB in each of the platform configurations.

Read the full Intel® 82575EB Gigabit Ethernet Controller Manageability Application Note.

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