Cisco ST373307LC, SFS InfiniBand User Manual

Americas Headquarters

Cisco Systems, Inc. 170 West Tasman Drive San Jose, CA 95134-1706 USA http://www.cisco.com Tel: 408 526-4000

800 553-NETS (6387)

Fax: 408 527-0883

Cisco SFS InfiniBand Host Drivers User Guide for Linux

Release 3.2.0 June 2007

Text Part Number: OL-12309-01

THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE. ALL STATEMENTS, INFORMATION, AND RECOMMENDATIONS IN THIS MANUAL ARE BELIEVED TO BE ACCURATE BUT ARE PRESENTED WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED. USERS MUST TAKE FULL RESPONSIBILITY FOR THEIR APPLICATION OF ANY PRODUCTS.

THE SOFTWARE LICENSE AND LIMITED WARRANTY FOR THE ACCOMPANYING PRODUCT ARE SET FORTH IN THE INFORMATION PACKET THAT SHIPPED WITH THE PRODUCT AND ARE INCORPORATED HEREIN BY THIS REFERENCE. IF YOU ARE UNABLE TO LOCATE THE SOFTWARE LICENSE OR LIMITED WARRANTY, CONTACT YOUR CISCO REPRESENTATIVE FOR A COPY.

The Cisco implementation of TCP header compression is an adaptation of a program developed by the University of California, Berkeley (UCB) as part of UCB’s public domain version of the UNIX operating system. All rights reserved. Copyright © 1981, Regents of the University of California.

NOTWITHSTANDING ANY OTHER WARRANTY HEREIN, ALL DOCUMENT FILES AND SOFTWARE OF THESE SUPPLIERS ARE PROVIDED “AS IS” WITH ALL FAULTS. CISCO AND THE ABOVE-NAMED SUPPLIERS DISCLAIM ALL WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING, WITHOUT LIMITATION, THOSE OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OR ARISING FROM A COURSE OF DEALING, USAGE, OR TRADE PRACTICE.

IN NO EVENT SHALL CISCO OR ITS SUPPLIERS BE LIABLE FOR ANY INDIRECT, SPECIAL, CONSEQUENTIAL, OR INCIDENTAL DAMAGES, INCLUDING, WITHOUT LIMITATION, LOST PROFITS OR LOSS OR DAMAGE TO DATA ARISING OUT OF THE USE OR INABILITY TO USE THIS MANUAL, EVEN IF CISCO OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

Any Internet Protocol (IP) addresses used in this document are not intended to be actual addresses. Any examples, command display output, and figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses in illustrative content is unintentional and coincidental.

Cisco SFS InfiniBand Host Drivers User Guide for Linux

CVP, the Cisco logo, and the Cisco Square Bridge logo are trademarks of Cisco Systems, Inc.; Changing the Way We Work, Live, Play, and Learn is a service mark of Cisco Systems,

nc.; and Access Registrar, Aironet, BPX, Catalyst, CCDA, CCDP, CCIE, CCIP, CCNA, CCNP, CCSP, Cisco, the Cisco Certified Internetwork Expert logo, Cisco IOS, Cisco

Press,

isco Systems, Cisco Systems Capital, the Cisco Systems logo, Cisco Unity, Enterprise/Solver, EtherChannel, EtherFast, EtherSwitch, Fast Step, Follow Me Browsing,

ormShare, GigaDrive, HomeLink, Internet Quotient, IOS, iPhone, IP/TV, iQ Expertise, the iQ logo, iQ Net Readiness Scorecard, iQuick Study, LightStream, Linksys,

eetingPlace, MGX, Networking Academy, Network Registrar, Pac k e t, PIX, ProConnect, ScriptShare, SMARTnet, StackWise, The Fastest Way to Increase Your Internet

uotient, and TransPath are registered trademarks of Cisco Systems, Inc. and/or its affiliates in the United States and certain other countries.

ll other trademarks mentioned in this document or Website are the property of their respective owners. The use of the word partner does not imply a partnership relationship

etween Cisco and any other company. (0705R)

iii

Cisco SFS InfiniBand Host Drivers User Guide for Linux

OL-12309-01

CONTENTS

Preface vii

Audience vii

Organization vii

Conventions viii

Root and Non-root Conventions in Examples ix

Related Documentation

For additional information related to the Cisco SFS IB host drivers, see the following documents:

• Cisco InfiniBand Host Channel Adapter Hardware Installation Guide

• Release Notes for Linux Host Drivers Release 3.2.0

• Release Notes for Cisco OFED, Release 1.1

• Cisco OpenFabrics Enterprise Distribution InfiniBand Host Drivers User Guide for Linux

• Cisco SFS Product Family Element Manager User Guide

• Cisco SFS InfiniBand Fibre Channel Gateway User Guide

Obtaining Documentation, Obtaining Support, and Security Guidelines

For information on obtaining documentation, obtaining support, providing documentation feedback, security guidelines, and also recommended aliases and general Cisco documents, see the monthly What’s New in Cisco Product Documentation, which also lists all new and revised Cisco technical documentation, at:

http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html

Convention Description

host1#

host2#

When this prompt appears in an example, it indicates that you are in a root account.

host1$

host2$

When this prompt appears in an example, it indicates that you are in a non-root account.

Cisco SFS InfiniBand Host Drivers User Guide for Linux

OL-12309-01

Preface

Obtaining Documentation, Obtaining Support, and Security Guidelines

CHA P T ER

1-1

Cisco SFS InfiniBand Host Drivers User Guide for Linux

OL-12309-01

About Host Drivers

This chapter describes host drivers and includes the following sections:

• Introduction, page 1-1

• Architecture, page 1-2

• Supported Protocols, page 1-3

• Supported APIs, page 1-4

• HCA Utilities and Diagnostics, page 1-4

Note For expansions of acronyms and abbreviations used in this publication, see Appendix A, “Acronyms and

Abbreviations.”

Introduction

The Cisco IB HCA offers high-performance 10-Gbps and 20-Gbps IB connectivity to PCI-X and PCI-Express-based servers. As an integral part of the Cisco SFS solution, the Cisco IB HCA enables you to create a unified fabric for consolidating clustering, networking, and storage communications.

After you physically install the HCA in the server, install the drivers to run IB-capable protocols. HCAs support the following protocols in the Linux environment:

• IPoIB

• SRP

• SDP

HCAs support the following APIs in the Linux environment:

• MVAPICH MPI

• uDAPL API

• Intel MPI

• HP MPI

Host drivers also provide utilities to help you configure and verify your HCA. These utilities provide upgrade and diagnostic features.

1-2

Cisco SFS InfiniBand Host Drivers User Guide for Linux

OL-12309-01

Chapter 1 About Host Drivers

Architecture

Note See the “Root and Non-root Conventions in Examples” section on page ix for details about the

significance of prompts used in the examples in this chapter.

Architecture

Figure 1-1 displays the software architecture of the protocols and APIs that HCAs support. The figure

displays ULPs and APIs in relation to other IB software elements.

Figure 1-1 HCA Supported Protocols and API Architecture

180411

InfiniBand HC A

Hardware

Specific Driver

Connection

Manager

InfiniBand Verbs / API

Client

Connection Manager

Abstraction (CMA)

User Level Verbs / API

SRP

uDAPL

User Level

MAD API

Diag

Tools

Hardware

Provider

Mid-Layer

Upper Layer Protocol

User APIs

Kernel Space

User Space

Application Level

SMA

SDPIPoIB

Block

Storage

Access

IP Based

App

Access

SCSI RDMA Protocol (Initiator)

SRP

Sockets Direct Protocol

SDP

IP over InfiniBandIPoIB

User Direct Access Programming Lib

UDAPL

Subnet Administrator

MPI

Message Pass ing Interface

Host Channel Adapter

HCA

Subnet Manager Agent

SMA

Management Datagram

MAD

MPI Based

App Access

Various

MPI's

1-3

Cisco SFS InfiniBand Host Drivers User Guide for Linux

OL-12309-01

Chapter 1 About Host Drivers

Supported Protocols

This section describes the supported protocols and includes the following topics:

• IPoIB

• SRP

• SDP

Protocol here refers to software in the networking layer in kernel space.

IPoIB

The IPoIB protocol passes IP traffic over the IB network. Configuring IPoIB requires similar steps to configuring IP on an Ethernet network. SDP relies on IPoIB to resolve IP addresses. (See the “SDP”

section on page 1-3.)

To configure IPoIB, you assign an IP address and subnet mask to each IB port. IPoIB automatically adds IB interface names to the IP network configuration. To configure IPoIB, see Chapter 3, “IP over IB

Protocol.”

SRP

SRP runs SCSI commands across RDMA-capable networks so that IB hosts can communicate with Fibre Channel storage devices and IB-attached storage devices. SRP requires an SFS with a Fibre Channel gateway to connect the host to Fibre Channel storage. In conjunction with an SFS, SRP disguises IB-attached hosts as Fibre Channel-attached hosts. The topology transparency feature lets Fibre Channel storage communicate seamlessly with IB-attached hosts (known as SRP hosts). For configuration instructions, see Chapter 4, “SCSI RDMA Protocol.”

SDP

SDP is an IB-specific upper- layer protocol. It defines a standard wire protocol to support stream sockets networking over IB. SDP enables sockets-based applications to take advantage of the enhanced performance features provided by IB and achieves lower latency and higher bandwidth than IPoIB running sockets-based applications. It provides a high-performance, data transfer protocol for stream-socket networking over an IB fabric. You can configure the driver to automatically translate TCP to SDP based on a source IP, a destination, or an application name. For configuration instructions, see

Chapter 5, “Sockets Direct Protocol.”

1-4

Cisco SFS InfiniBand Host Drivers User Guide for Linux

OL-12309-01

Chapter 1 About Host Drivers

Supported APIs

This section describes the supported APIs and includes the following topics:

• MVAPICH MPI

• uDAPL

• Intel MPI

• HP MPI

API refers to software in the networking layer in user space.

MVAPICH MPI

MPI is a standard library functionality in C, C++, and Fortran that can be used to implement a message-passing program. MPI allows the coordination of a program running as multiple processes in a distributed memory environment. This document includes setup and configuration information for MVAPICH MPI. For more information, see Chapter 7, “MVAPICH MPI.”

uDAPL

uDAPL defines a single set of user-level APIs for all RDMA-capable transports. The uDAPL mission is to define a transport-independent and platform-standard set of APIs that exploits RDMA capabilities such as those present in IB. For more information, see Chapter 6, “uDAPL.”

Intel MPI

Cisco tests and supports the SFS IB host drivers with Intel MPI. The Intel MPI implementation is available for separate purchase from Intel. For more information, visit the following URL:

http://www.intel.com/go/mpi

HP MPI

Cisco tests and supports the SFS IB host drivers with HP MPI for Linux. The HP MPI implementation is available for separate purchase from Hewlett Packard. For more information, visit the following URL:

http://www.hp.com/go/mpi

HCA Utilities and Diagnostics

The HCA utilities provide basic tools to view HCA attributes and run preliminary troubleshooting tasks. For more information, see Chapter 8, “HCA Utilities and Diagnostics.”

CHA P T ER

2-1

Cisco SFS InfiniBand Host Drivers User Guide for Linux

OL-12309-01

Installing Host Drivers

The chapter includes the following sections:

• Introduction, page 2-1

• Contents of ISO Image, page 2-2

• Installing Host Drivers from an ISO Image, page 2-2

• Uninstalling Host Drivers from an ISO Image, page 2-3

Note See the “Root and Non-root Conventions in Examples” section on page ix for details about the

significance of prompts used in the examples in this chapter.

Introduction

The Cisco Linux IB driver is delivered as an ISO image. The ISO image contains the binary RPMs for selected Linux distributions. The Cisco Linux IB drivers distribution contains an installation script called tsinstall. The install script performs the necessary steps to accomplish the following:

• Discover the currently installed kernel

• Uninstall any IB stacks that are part of the standard operating system distribution

• Install the Cisco binary RPMs if they are available for the current kernel

• Identify the currently installed IB HCA and perform the required firmware updates

Note For specific details about which binary RPMs are included and which standard Linux distributions and

kernels are currently supported, see the Release Notes for Linux Host Drivers Release 3.2.0.

2-2

Cisco SFS InfiniBand Host Drivers User Guide for Linux

OL-12309-01

Chapter 2 Installing Host Drivers

Contents of ISO Image

The ISO image contains the following directories and files:

• docs/

This directory contains the related documents.

• tsinstall

This is the installation script.

• redhat/

This directory contains the binary RPMs for Red Hat Enterprise Linux.

• suse/

This directory contains the binary RPMs for SUSE Linux Enterprise Server.

Installing Host Drivers from an ISO Image

See the Cisco InfiniBand Host Channel Adapter Hardware Installation Guide to correctly install HCAs. To install host drivers from an ISO image, perform the following steps:

Note If you upgrade your Linux kernel after installing these host drivers, you need to reinstall the host drivers.

Step 1 Verify that the system has a viable HCA installed by ensuring that you can see the InfiniHost entries in

the display.

The following example shows that the installed HCA is viable:

host1# lspci -v | grep Mellanox 06:01.0 PCI bridge: Mellanox Technologies MT23108 PCI Bridge (rev a0) (prog-if 00 [Normal decode]) 07:00.0 InfiniBand: Mellanox Technologies MT23108 InfiniHost (rev a0) Subsystem: Mellanox Technologies MT23108 InfiniHost

Step 2 Download an ISO image, and copy it to your network.

You can download an ISO image from http://www.cisco.com/cgi-bin/tablebuild.pl/sfs-linux

Step 3 Use the md5sum utility to confirm the file integrity of your ISO image.

Step 4 Install drivers from an ISO image on your network.

The following example shows how to install host drivers from an ISO image:

host1# mount -o ro,loop topspin-host-3.2.0-136.iso /mnt host1# /mnt/tsinstall

The following kernels are installed, but do not have drivers available:

2.6.9-34.EL.x86_64

The following installed packages are out of date and will be upgraded: topspin-ib-rhel4-3.2.0-118.x86_64 topspin-ib-mpi-rhel4-3.2.0-118.x86_64 topspin-ib-mod-rhel4-2.6.9-34.ELsmp-3.2.0-118.x86_64

The following packages will be installed: topspin-ib-rhel4-3.2.0-136.x86_64 (libraries, binaries, etc)

2-3

Cisco SFS InfiniBand Host Drivers User Guide for Linux

OL-12309-01

Chapter 2 Installing Host Drivers

Uninstalling Host Drivers from an ISO Image

topspin-ib-mpi-rhel4-3.2.0-136.x86_64 (MPI libraries, source code, docs, etc) topspin-ib-mod-rhel4-2.6.9-34.ELsmp-3.2.0-136.x86_64 (kernel modules)

installing 100% ###############################################################

Upgrading HCA 0 HCA.LionMini.A0 to firmware build 3.2.0.136 New Node GUID = 0005ad0000200848 New Port1 GUID = 0005ad0000200849 New Port2 GUID = 0005ad000020084a Programming HCA firmware... Flash Image Size = 355076 Flashing - EFFFFFFFEPPPPPPPEWWWWWWWEWWWWWWWEWWWWWVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV Flash verify passed!

Step 5 Run a test to verify whether or not the IB link is established between the respective host and the IB

switch.

The following example shows a test run that verifies an established IB link:

host1# /usr/local/topspin/sbin/hca_self_test

---- Performing InfiniBand HCA Self Test ----

Number of HCAs Detected ................ 1

PCI Device Check ....................... PASS

Kernel Arch ............................ x86_64

Host Driver Version .................... rhel4-2.6.9-34.ELsmp-3.2.0-136

Host Driver RPM Check .................. PASS

HCA Type of HCA #0 ..................... LionMini

HCA Firmware on HCA #0 ................. v5.2.000 build 3.2.0.136 HCA.LionMini.A0

HCA Firmware Check on HCA #0 ........... PASS

Host Driver Initialization ............. PASS

Number of HCA Ports Active ............. 2

Port State of Port #0 on HCA #0 ........ UP 4X

Port State of Port #1 on HCA #0 ........ UP 4X

Error Counter Check on HCA #0 .......... PASS

Kernel Syslog Check .................... PASS

Node GUID .............................. 00:05:ad:00:00:20:08:48

------------------ DONE ---------------------

The HCA test script, as shown in the example above, checks for the HCA firmware version, verifies that proper kernel modules are loaded on the IP drivers, shows the state of the HCA ports, shows the counters that are associated with each IB port, and indicates whether or not there are any error messages in the host operating system log files.

Note To troubleshoot the results of this test, see Chapter 8, “HCA Utilities and Diagnostics.”

Uninstalling Host Drivers from an ISO Image

The following example shows how to uninstall a host driver from a device:

host1# rpm -e `rpm -qa | grep topspin`

2-4

Cisco SFS InfiniBand Host Drivers User Guide for Linux

OL-12309-01

Chapter 2 Installing Host Drivers

Uninstalling Host Drivers from an ISO Image

CHA P T ER

3-1

Cisco SFS InfiniBand Host Drivers User Guide for Linux

OL-12309-01

IP over IB Protocol

This chapter describes IP over IB protocol and includes the following sections:

• Introduction, page 3-1

• Manually Configuring IPoIB for Default IB Partition, page 3-2

• Subinterfaces, page 3-2

• Verifying IPoIB Functionality, page 3-5

• IPoIB Performance, page 3-6

• Sample Startup Configuration File, page 3-8

• IPoIB High Availability, page 3-8

Note See the “Root and Non-root Conventions in Examples” section on page ix for details about the

significance of prompts used in the examples in this chapter.

Introduction

Configuring IPoIB requires that you follow similar steps to the steps used for configuring IP on an Ethernet network. When you configure IPoIB, you assign an IP address and a subnet mask to each HCA port. The first HCA port on the first HCA in the host is the ib0 interface, the second port is ib1, and so on.

Note To enable these IPoIB settings across reboots, you must explicitly add these settings to the networking

interface startup configuration file. For a sample configuration file, see the “Sample Startup

Configuration File” section on page 3-8.

See your Linux distribution documentation for additional information about configuring IP addresses.

3-2

Cisco SFS InfiniBand Host Drivers User Guide for Linux

OL-12309-01

Chapter 3 IP over IB Protocol

Manually Configuring IPoIB for Default IB Partition

To manually configure IPoIB for the default IB partition, perform the following steps:

Step 1 Log in to your Linux host.

Step 2 To configure the interface, enter the ifconfig command with the following items:

• The appropriate IB interface (ib0 or ib1 on a host with one HCA)

• The IP address that you want to assign to the interface

• The netmask keyword

• The subnet mask that you want to assign to the interface

The following example shows how to configure an IB interface:

host1# ifconfig ib0 192.168.0.1 netmask 255.255.252.0

Step 3 (Optional) Verify the configuration by entering the ifconfig command with the appropriate port identifier

ib# argument.

The following example shows how to verify the configuration:

host1# ifconfig ib0 ib0 Link encap:Ethernet HWaddr F8:79:D1:23:9A:2B inet addr:192.168.0.1 Bcast:192.168.0.255 Mask:255.255.255.0 inet6 addr: fe80::9879:d1ff:fe20:f4e7/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:2044 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:9 overruns:0 carrier:0 collisions:0 txqueuelen:1024 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)

Step 4 Repeat Step 2 and Step 3 on the remaining interface(s).

Subinterfaces

This section describes subinterfaces. Subinterfaces divide primary (parent) interfaces to provide traffic isolation. Partition assignments distinguish subinterfaces from parent interfaces. The default Partition Key (p_key), ff:ff, applies to the primary (parent) interface.

This section includes the following topics:

• Creating a Subinterface Associated with a Specific IB Partition, page 3-3

• Removing a Subinterface Associated with a Specific IB Partition, page 3-4

3-3

Cisco SFS InfiniBand Host Drivers User Guide for Linux

OL-12309-01

Chapter 3 IP over IB Protocol

Subinterfaces

Creating a Subinterface Associated with a Specific IB Partition

To create a subinterface associated with a specific IB partition, perform the following steps:

Step 1 Create a partition on an IB SFS. Alternatively, you can choose to create the partition of the IB interface

on the host first, and then create the partition for the ports on the IB SFS. See the Cisco SFS Product Family Element Manager User Guide for information regarding valid partitions on the IB SFS.

Step 2 Log in to your host.

Step 3 Add the value of the partition key to the file as root user.

The following example shows how to add partition 80:02 to the primary interface ib0:

host1# /usr/local/topspin/sbin/ipoibcfg add ib0 80:02

Step 4 Verify that the interface is set up by ensuring that ib0.8002 is displayed.

The following example shows how to verify the interface:

host1# ls /sys/class/net eth0 ib0 ib0.8002 ib1 lo sit0

Step 5 Verify that the interface was created by entering the ifconfig -a command.

The following example shows how to enter the ifconfig -a command:

host1# ifconfig -a eth0 Link encap:Ethernet HWaddr 00:30:48:20:D5:D1 inet addr:172.29.237.206 Bcast:172.29.239.255 Mask:255.255.252.0 inet6 addr: fe80::230:48ff:fe20:d5d1/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:9091465 errors:0 dropped:0 overruns:0 frame:0 TX packets:505050 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1517373743 (1.4 GiB) TX bytes:39074067 (37.2 MiB) Base address:0x3040 Memory:dd420000-dd440000

ib0 Link encap:Ethernet HWaddr F8:79:D1:23:9A:2B inet addr:192.168.0.1 Bcast:192.168.0.255 Mask:255.255.255.0 inet6 addr: fe80::9879:d1ff:fe20:f4e7/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:2044 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:9 overruns:0 carrier:0 collisions:0 txqueuelen:1024 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)

ib0.8002 Link encap:Ethernet HWaddr 00:00:00:00:00:00 BROADCAST MULTICAST MTU:2044 Metric:1 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:1024 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)

lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:378 errors:0 dropped:0 overruns:0 frame:0 TX packets:378 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:45730 (44.6 KiB) TX bytes:45730 (44.6 KiB)

sit0 Link encap:IPv6-in-IPv4

3-4

Cisco SFS InfiniBand Host Drivers User Guide for Linux

OL-12309-01

Chapter 3 IP over IB Protocol

Subinterfaces

NOARP MTU:1480 Metric:1 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:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)

Verify that you see the ib0.8002 output.

Step 6 Configure the new interface just as you would the parent interface. (See the “Manually Configuring

IPoIB for Default IB Partition” section on page 3-2.)

The following example shows how to configure the new interface:

host1# ifconfig ib0.8002 192.168.12.1 netmask 255.255.255.0

Removing a Subinterface Associated with a Specific IB Partition

To remove a subinterface, perform the following steps:

Step 1 Take the subinterface offline. You cannot remove a subinterface until you bring it down.

The following example shows how to take the subinterface offline:

host1# ifconfig ib0.8002 down

Step 2 Remove the value of the partition key to the file as root user.

The following example shows how to remove the partition 80:02 from the primary interface ib0:

host1# /usr/local/topspin/sbin/ipoibcfg del ib0 80:02

Step 3 (Optional) Verify that the subinterface no longer appears in the interface list by entering the ifconfig -a

command.

The following example shows how to verify that the subinterface no longer appears in the interface list:

ib0.8002 Link encap:Ethernet HWaddr 00:00:00:00:00:00 BROADCAST MULTICAST MTU:2044 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0

3-5

Cisco SFS InfiniBand Host Drivers User Guide for Linux

OL-12309-01

Chapter 3 IP over IB Protocol

Verifying IPoIB Functionality

TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1024 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)

sit0 Link encap:IPv6-in-IPv4 NOARP MTU:1480 Metric:1 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:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)

Verifying IPoIB Functionality

To verify your configuration and your IPoIB functionality, perform the following steps:

Step 1 Log in to your hosts.

Step 2 Verify the IPoIB functionality by using the ifconfig command.

The following example shows how two IB nodes are used to verify IPoIB functionality. In the following example, IB node 1 is at 192.168.0.1, and IB node 2 is at 192.168.0.2:

host1# ifconfig ib0 192.168.0.1 netmask 255.255.252.0 host2# ifconfig ib0 192.168.0.2 netmask 255.255.252.0

Step 3 Enter the ping command from 192.168.0.1 to 192.168.0.2.

The following example shows how to enter the ping command:

host1# ping -c 5 192.168.0.2 PING 192.168.0.2 (192.168.0.2) 56(84) bytes of data. 64 bytes from 192.168.0.2: icmp_seq=0 ttl=64 time=0.079 ms 64 bytes from 192.168.0.2: icmp_seq=1 ttl=64 time=0.044 ms 64 bytes from 192.168.0.2: icmp_seq=2 ttl=64 time=0.055 ms 64 bytes from 192.168.0.2: icmp_seq=3 ttl=64 time=0.049 ms 64 bytes from 192.168.0.2: icmp_seq=4 ttl=64 time=0.065 ms

--- 192.168.0.2 ping statistics --5 packets transmitted, 5 received, 0% packet loss, time 3999ms rtt min/avg/max/mdev =

0.044/0.058/0.079/0.014 ms, pipe 2

+ 51 hidden pages

Cisco ST373307LC, SFS InfiniBand User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual