Technical Product Specification

Table Of Contents
Intel
®
Server Board S5400SF TPS Server Management
Revision 2.02
Intel order number: D92944-007
65
4.8.2 Server Management Software (SMS) Interface
The SMS interface is the Integrated BMC host interface. The Integrated BMC implements the
SMS KCS interface as described in the IPMI Specification, Version 2.0.
4.8.3 Server Management Mode (SMM) Interface
The SMM interface is a KCS interface that is used by the BIOS when interface response time is
a concern, such as with the BIOS SMI handler. The Integrated BMC gives this interface priority
over other communication interfaces.
4.8.4 IPMB Communication Interface
The IPMB is a communication protocol that utilizes the 100 KB/s version of an I
2
C bus as its
physical medium. For more information on I
2
C specifications, refer to The I
2
C Bus and How to
Use It document. The IPMB implementation in the Integrated BMC is compliant with the IPMB
v1.0, Revision 1.0.
4.8.5 Emergency Management Port (EMP) Interface
The emergency management port (EMP) interface is the Intel implementation of the IPMI 2.0:
IPMI over Serial/Modem feature. The primary goal of providing an out-of-band RS-232
connection is to give system administrators the ability to access low-level server management
firmware functions by using commonly available tools. To make it easy to use and to provide
high-compatibility with LAN and IPMB protocols, this protocol design adopts some features of
both protocols.
4.8.6 LAN Interface
The Integrated BMC implements both the IPMI 1.5 and IPMI 2.0 messaging models. These
provide out-of-band local area network (LAN) communication between the Integrated BMC and
the external world.
The Integrated BMC supports a maximum of three LAN interfaces:
Two of the LAN interfaces utilize the embedded Intel
®
6321ESB I/O Controller Hub NICs
(one channel per embedded NIC).
One LAN interface utilizes an optional external NIC known as the Intel
®
Remote
Management Module 2 (Intel
®
RMM2) NIC. Use of this NIC requires the installation of
the optional Intel
®
RMM2 add-in card.
See the IPMI Specification, Version 2.0 for details on the IPMI-over-LAN protocol.
Run-time determination of LAN channel capabilities can be determined both by standard IPMI
defined mechanisms and by an OEM configuration parameter that defines advanced feature
support.