Advantech MIC-6314 Series, Руководство пользователя

Страница: 62 / 136

MIC-6314 User Manual 50
3.1 Module Management
The IPMI Baseboard Management Controller (BMC) located on MIC-6314 acts as a
standard IPMI management controller and is an essential part of the board. The
BMC’s primary tasks are to ensure module health (monitoring the voltage and tem-
perature sensors), facilitate payload state management and information data storage,
and provide IPMI communication interfaces.
3.2 IPMI Interfaces
MIC-6314 provides three main IPMI messaging interfaces for connecting to the mod-
ules BMC, specifically, the local IPMB bus (IPMB) for basic communication with other
modules in the chassis, the LAN side band interface (RMCP/RMCP+), and the on-
board payload interface to x86 (KCS).
Figure 3.1 IPMI interfaces
3.2.1 IPMB
The basic IPMI connection of a BMC is the I2C-based, serial IPMB interface routed to
the backplane connector. Once plugged into a backplane and supplied with power,
the BMC discovers the slot connector’s geographic address (GA). The GA is used to
assign a unique IPMB address according to the slot number. With this IPMB address,
the BMC is able to communicate with other components in the chassis.
The open source IPMItool can be used to access the BMC via IPMB.
3.2.2 KCS
The Keyboard Controller Style (KCS) protocol is used as IPMI system interface con-
nection to the x86 part on MIC-6314. Based on the low pin count (LPC) bus, the KCS
protocol is used as the local BMC interface to the BIOS and board OS. KCS is a fast
IPMI interface compared to IPMB, but requires an active payload.
IPMI driver support is required to facilitate IPMItool operation from the OS level via
the KCS BMC interface (see Appendix G - Driver and Tools for further information).
With a working IPMI driver, the BMC can be easily accessed from the OS via KCS.
No interface parameters are required to use the local onboard IPMI connection:
ipmitool <Command>