Silicon Power Computer & comm 74669003 manuale d’uso

SGI ® 10-Gigabit Ether net Network Adapter User’s Guide 007–4669–003[...]

CONTRIBUTORS W ritten by Lori Johnson Illustrated by Dan Y oung and Chrystie Danzer Engineering contributions Arthur Kepner , Edward Mascarenhas, Steve Modica, Alain Renaud, James Y arbr ough COPYRIGHT © 2004-2006 Silicon Graphics, Inc. All rights reserved; provided portions may be copyright in third parties, as indicated elsewhere herein. No perm[...]

TUV geprufte Sicherheit R NRTL/C International Special Committee on Radio Interference (CISPR) This equipment has been tested to and is in compliance with the Class A limits per CISPR publication 22. Canadian Depar tment of Communications Statement This digital apparatus does not exceed the Class A limits for radio noise emissions fr om digital app[...]

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New Features This revision adds support for the Release 2 car d, which is supported with SGI ProPack 4 Service Pack 3 and later releases. 007–4669–003 v[...]

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Record of Revision V ersion Description 001 May 2004 Initial publication 002 August 2005 Revision 003 July 2006 Revision 007–4669–003 vii[...]

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Contents About this Guide ........ ... ........ .. xi Audience . . ..... ..... ........... ... x i Important Information . . . ..... ..... ......... x i Scope of this Guide ......... ..... ......... x i i Related Publications . . . ..... ..... ......... x i i Obtaining Publications . . . ..... ..... ......... xiii Conventions . .......... ..... ...[...]

Contents V erifying that the Adapter is Properly Configured and Enabled ........ 1 2 IRIX Adapter Configuration V erification . ..... ......... 1 2 Linux Adapter Configuration V erification ..... ...... ... 1 3 Resetting the Adapter . . . ..... ..... ......... 1 3 Configuration .......... ..... ......... 1 4 IRIX Configuration . . . ..... ..[...]

About this Guide This guide describes the SGI 10-Gigabit (Gbit) Ethernet network adapter . It operates under the IRIX and SGI ProPack for Linux operating systems, as specified in the operating system release notes. Y ou can use the SGI 10-Gbit Ethernet network adapter in addition to your current adapter . This guide shows you how to connect the ad[...]

About this Guide Scope of this Guide This guide is written to facilitate installation of the adapter and does not cover detailed points of network configuration. It contains the following chapters: • Chapter 1, "Features and Capabilities of the SGI 10-Gbit Ethernet Network Adapter", summarizes features, cabling, configuration limits, [...]

SGI ® 10-Gigabit Ether net Network Adapter User’s Guide • Standard Linux man pages that are useful for any Ethernet device: – ethtool (8) – ifconfig (8) – ip (8) Obtaining Publications Y ou can obtain SGI documentation as follows: • See the SGI T echnical Publications Library at http://docs.sgi.com. V arious formats are available. This[...]

About this Guide user input This bold, fixed-space font denotes literal items that the user enters in interactive sessions. (Output is shown in nonbold, fixed-space font.) xiv 007–4669–003[...]

SGI ® 10-Gigabit Ether net Network Adapter User’s Guide [ ] Brackets enclose optional portions of a command or directive line. ... Ellipses indicate that a pr eceding element can be repeated. Product Support SGI provides a compr ehensive product support and maintenance program for its products: • If you are in North America, contact the T echn[...]

About this Guide • Send mail to the following address: T echnical Publications SGI 1500 Crittenden Lane, M/S 535 Mountain V iew , California 94043–1351 SGI values your comments and will respond to them pr omptly . xvi 007–4669–003[...]

Chapter 1 Features and Capabilities of the SGI 10-Gbit Ethernet Network Adapter The 10-Gbit Ethernet technology is an extension of Gigabit Ethernet (1000-Base-T) technology that allows over-the-wir e speeds up to 10 Gbits per second (Gbps), which is theor etically ten times the rate of existing technology . Given the limitations of the bus and the [...]

1: Features and Capabilities of the SGI 10-Gbit Ether net Networ k Adapter • "Configuration Limits" on page 3 • "T ools" on page 3 Features The adapter includes the following features: • Full-duplex Gigabit Ethernet interface as defined in the IEEE P802.3ae approved standard • Jumbo frame support (up to 9600 bytes) •[...]

SGI ® 10-Gigabit Ethernet Network Adapter User’s Guide T able 1-1 10-Gbit Cable Standards Diameter (Microns) Modal Bandwidth (MHz * km) Range (Meters) 50 400 2 to 66 50 500 2 to 82 50 2000 2 to 300 Configuration Limits The number of the 10-Gbit Ethernet network adapters supported varies by system. Consult with your SGI repr esentative to determ[...]

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Chapter 2 Connecting the Adapter to a Network T o install the SGI 10-Gbit Ethernet network adapter , refer to the instructions for installing a PCI card in the user’s or owner’s guide that came with the SGI system. T o connect the adapter to a network, do the following: 1. Remove the protective end caps and save them . ! Caution: 10-Gbit optics[...]

2: Connecting the Adapter to a Networ k Fiber-optic connector Figure 2-1 Release 1 Card: Fibr e Optic Connections 6 007–4669–003[...]

SGI ® 10-Gigabit Ethernet Network Adapter User’s Guide Fiber-optic connector Rx Tx Link Figure 2-2 Release 2 Card: Fibr e Optic Connections For information about configuring the interfaces, see IRIX Admin: Networking and Mail and The Network Administrators’ Guide . 007–4669–003 7[...]

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Chapter 3 Operating the Adapter This chapter describes various issues that may occur when using the SGI 10-Gbit Ethernet network adapter in a 10-Gbit Ethernet network. It includes the following sections: • "V erifying Functionality" on page 9 • "Resetting the Adapter" on page 13 • "Configuration" on page 14 • [...]

3: Operating the Adapter T able 3-1 LEDs on the SGI 10-Gbit Ethernet Network Adapter LED State Purpose ACT Blinking Off Data detected No data detected LINK On Off Good link No link: faulty cable, faulty connector , or communication mismatch During normal operation, the link LED is on; the data LED blinks whenever the adapter is receiving traffic. [...]

SGI ® 10-Gigabit Ethernet Network Adapter User’s Guide A line similar to the following should appear , where N is the number of the adapter: 10 Gigabit Ethernet: xg N , module 001c02, 66 MHz PCI bus 2 slot 1 For example, the first adapter would appear as xg1 : 10 Gigabit Ethernet: xg1, module 001c02, 66 MHz PCI bus 2 slot 1 Linux Adapter Recogn[...]

3: Operating the Adapter RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) Interrupt:62 Enabling the Adapter T o enable the adapter , enter the following: # ifconfig IPaddress broadcast br oadcastaddress netmask netmaskvalue For [...]

SGI ® 10-Gigabit Ethernet Network Adapter User’s Guide In this addr ess, the organizationally unique identifier (OUI) of the adapter vendor is repr esented by the first three sets of numbers (for example, 08:00:69 ). The last three sets vary , depending on the system. See the netstat man page for more details. Linux Adapter Configuration V er[...]

3: Operating the Adapter • Linux: # ifconfig eth N down # ifconfig eth N up Configuration IRIX and Linux use differ ent configuration tools. IRIX Configuration The configuration of the adapter is contr olled by a number of parameters, which are discussed in the IRIX /etc/config/xgcmd.options file. T o change the configuration of your adapte[...]

SGI ® 10-Gigabit Ethernet Network Adapter User’s Guide The output will display information about the network adapters curr ently installed in the system, as follows: Name Mtu Network Address Ipkts Ierrs Opkts Oerrs Coll xg1 1500 10.50.1 system.name 0 0 1 0 0 2. T o bring down the adapter , enter the following command, wher e N is the number of t[...]

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Chapter 4 P erformance T uning This chapter discusses performance tuning topics for IRIX and SGI Pr oPack for Linux. For good TCP performance, the socket buffers used by applications must be at least as large as the bandwidth-r ound trip delay product between the two endpoints. Normally , larger socket buf fers are called for with 10–Gbit Etherne[...]

4: P erformance T uning Read/Write Size and IRIX In a point-to-point configuration, use a buf fer length of 513920 bytes. In a multiclient configuration, use a buf fer length of 64240 bytes. Socket Buffer Size and IRIX Socket buffer size is set either: • By the application • V ia the tcp_sendspace and tcp_recvspace tunable parameters In a poi[...]

SGI ® 10-Gigabit Ethernet Network Adapter User’s Guide SGI Pr oP ack P erf ormance T uning This section discusses the following: • "Socket Read and W rite Buf fer Sizes for SGI ProPack" on page 19 • "Jumbo Frames and SGI ProPack" on page 19 • "Read/W rite Size and SGI ProPack" on page 19 • "TCP/IP Socke[...]

4: P erformance T uning wmem_max will limit the amount of memory available for each socket’s buffers, and can result in degraded network throughput. Unless it is requir ed to limit memory usage, SGI recommends that you do not reduce these below the default SGI ProPack values. If you to adjust the socket buf fers, use sysctl (8) command. 20 007–[...]

Glossary CD-ROM (CD) A flat metallic disk that contains information that you can view and copy onto your own hard disk; you cannot change or add to the disk. CD-ROM is an abbreviation for compact disc read-only memory . Ethernet A communication network used to connect computers. gigabit (Gbit) A communication rate of 2^30 bits per second. host Any[...]

Glossary MTU Maximum T ransmission Unit is a configuration parameter that controls the size of the Ethernet frames that the SGI 10-Gigabit Ethernet network adapter can transmit and receive. man (manual) page An online document that describes how to use a particular IRIX command. Also called refer ence page. multiclient configuration A TCP/IP con?[...]

Index 1000-Base-SX, 3 A adapter enabling, 12 adapter recognition, 10 Altix systems, 1 Altix XE systems, 1 C cabling, 2 capabilities, 1 configuration limits, 3 connector , 2, 6 D diagnostics, 3 DMA channels, 2 driver , 3 E enabling the adapter , 12, 13 /etc/ioconfig.conf, 10 ethtool, 3 F features, 1, 2 fiber connection, 2 fibre optic connections[...]

Index M MAC address, 12 MMR, 3 MTU sizes, 14, 17 multibuffer mode and tuning, 18 multiclient configuration, 17 N netstat, 12–14 network connection, 5 network interface names, 10 O Onyx systems, 1 operating, 9 Origin systems, 1 P PCI-X bus interface, 2 performance tuning IRIX, 17 SGI ProPack, 19 point-to-point configuration, 17 ports, 3 /proc/sy[...]

SGI ® 10-Gigabit Ether net Network Adapter User’s Guide X xg driver , 3 xgcmd diagnostic tool, 3 007–4669–003 25[...]