Revision 1.1 March 2013
NC-SI Overview and Performance Understanding the DMTF Standard Manageability Interface
Intel® Networking Division
Legal
INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH INTEL PRODUCTS. NO LICENSE, EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL PROPERTY RIGHTS IS GRANTED
BY THIS DOCUMENT. EXCEPT AS PROVIDED IN INTEL'S TERMS AND CONDITIONS OF SALE FOR SUCH PRODUCTS, INTEL ASSUMES NO LIABILITY WHATSOEVER AND INTEL DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY, RELATING TO SALE AND/OR USE OF INTEL PRODUCT
S INCLUDING LIABILITY OR WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT.
A "Mission Critical Application" is any application in which failure of the Intel Product could result, directly or indirectly, in personal injury or death. SHOULD YOU PURCHASE OR USE INTEL'S PRODUCTS FOR ANY SUCH MISSION CRITICAL APPLICATION, YOU SHALL INDEMNIFY AND HOLD INTEL AND ITS SUBSIDIARIES, SUBCONTRACTORS AND AFFILIATES, AND THE DIRECTORS, OFFICERS, AND EMPLOYEES OF EACH, HARMLESS AGAINST ALL CLAIMS COSTS, DAMAGES, AND EXPENSES AND REASONABLE ATTORNEYS' FEES ARISING OUT OF, DIRECTLY OR INDIRECTLY, ANY CLAIM OF PRODUCT LIABILITY, PERSONAL INJURY, OR DEATH ARISING IN ANY WAY OUT OF SUCH MISSION CRITICAL APPLICATION, WHETHER OR NOT INTEL OR ITS SUBCONTRACTOR WAS NEGLIGENT IN THE DESIGN, MANUFACTURE, OR WARNING OF THE INTEL PRODUCT OR ANY OF ITS PARTS.
Intel may make changes to specifications and product descriptions at any time, without notice. Designers must not rely on the abnce or characteristics of any features or instructions marked "rerved" or "undefined". Intel rerves the for future definition and shall have no responsibility w
hatsoever for conflicts or incompatibilities arising from future changes to them. The information here is subject to change without notice. Do not finalize a design with this information.
双音节单词
The products described in this document may contain design defects or errors known as errata which may cau the product to deviate from published specifications. Current characterized errata are available on request. Contact your local Intel sales office or your distributor to obtain the latest specifications and before placing your product order.
Copies of documents which have an order number and are referenced in this document, or other Intel literature, may be obtained by calling 1-800-548-4725, or go to:
Intel and Intel logo are trademarks or registered trademarks of Intel Corporation or its subsidiaries in the United States and other countries.
*Other names and brands may be claimed as the property of others.
Copyright © 2008-2013. Intel Corporation. All Rights Rerved.
Revisions
Date Revision Description
March 2013 1.1 Revid ction 11.2.2.
February 2013 1.0 Initial Relea
2 Revision 1.0
Contents
1Introduction (4)
2Network Controller Sideband Interface (5)
3NC-SI Usage (5)金屋藏娇的典故
3.1Request/Respon Traffic Pattern (5)
3.2Streaming MC to Console Traffic Pattern (6)
3.3Streaming Console to MC traffic Pattern (7)
4NC-SI Performance (8)
5Investigation (9)
5.1BMC2NET Traffic (10)
5.2Bidirectional Performance (12)
5.3Testing Summary (14)
6Conclusion (15)
6.1TCP Window Size (15)
6.2Fire Ho Theory Revisited (16)
6.3Not All Network Stacks Are Created Equal (16)
7My Solution (17)
7.1Improved Performance (17)
8Testing Methodology (18)
8.1Set Setup (19)
9Conclusion (20)
10About the Author (20)
未识别的网络11Testing Results (20)
11.1Iperf—Default BMC Network Settings (20)
11.1.1RHEL 6.3 Console (20)
11.1.2Microsoft Windows Server 2008 Console (22)
养仓鼠的注意事项11.2Iperf—Modified BMC Network Settings (24)
11.2.1RHEL 6.3 Console (24)
11.2.2Microsoft Windows Server 2008 Console (26)
NC-SI Performance 3
空英文
4
Revision 1.0 1 Introduction
This document provides a brief introduction to the DMTF (www.dmtf ) Network Controller Sideband Interface (NC-SI) management interface. The primary reason for the overview is to provide background information for the main purpo of this document—discussion of the interface’s performance and some important considerations a Management Controller designer can u to achieve the best performance over this interface.
The primary components discusd in this paper are:
稽核会计
• DMTF Defined Network Component Sideband Interface (NC-SI)
The physical connection and protocol layer ud to allow connectivity between a Management Controller (MC) and a Network Controller (NC)
•
Management Controller (MC)
幼儿园早教A specialized microcontroller embedded on the motherboard of a computer that monitors and manages the system. Another name is Baboard Management Controller (BMC). MC and BMC are ud interchangeability throughout this document.
• Network Controller (NC) The Ethernet Controller utilizing the NC-SI interface to provided network connectivity to the MC.
• Remote Management Console
A computer running software designed to communicate with a MC over a network interface.
NC-SI Performance
5 2Network Controller Sideband Interface
A Management Controller (MC) or Baboard Management Controller (BMC) usually requires Ethernet connectivity for remote management. Initially, MC’s had a dedicated Ethernet port to achieve this connectivity.
Later, Ethernet manufacturers started using proprietary sideband interfaces to provide a mechanism by which the MC could share an Ethernet port with the Operating System. This interface was generally bad upon the I2C/SMBus interface, but had a proprietary protocol. The DMTF t out to create an industry standard sideband interface that would operate at a much greater speed than SMBus and alleviate some of the burden on BMC engineers who, for years, had been writing different Ethernet code bad on which manufacturers’ Ethernet device was ud as the LOM (LAN on Motherboard) for the rver board.
居安思危的例子
Figure 1 Sideband Interface
The result is the Network Controller Sideband Interface (NC-SI)—DMTF document DSP0222, relead in 2009 as 1.0.0. Since that time, NC-SI has become the management interface of choice for the MC.
NC-SI is designed to provide a robust filtering mechanism allowing the MC to specify exactly the kind of Ethernet traffic it will accept. NC-SI also operates at speeds up to 100Mbps full-duplex.
3NC-SI Usage
3.1 Request/Respon Traffic Pattern Typical traffic ud in managing a rver is a request/respon bad model. A management console nds a request and the MC replies with a respon. This type of request/respon model is very common when using management protocols such as IPMI (Intelligent Platform Management Interface ) and has become ubiquitous on nearly all modern rvers. Gathering information such as temperatures, voltages, fan RPM, thresholds
etc., are usually done using a request/respon mechanism.
