HP 100BASE-TX User Manual

Using Dual Port 100Base-TX and Dual

Port Wide Ultra2 SCSI

Version B.11.00.01

Manufacturing Part Number:

E1099

U. S. A.

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Contents

1. Installing and Conﬁguring PCI 10/100 Base-TX

Compatibility and Installation Requirements. . . . . . . . . . . . . . . . . . . . .10

Manual Speed and Duplex Mode Conﬁguration . . . . . . . . . . . . . . . . . . .11

Autonegotiation and Autosensing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

What Manuals are Available. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Software Availability in Native Languages. . . . . . . . . . . . . . . . . . . . . . .16

2. Conﬁguring Network Connectivity Using SAM

Step 1: Conﬁguring Network Connectivity . . . . . . . . . . . . . . . . . . . . . . .19

Step 2: Deleting a Default Gateway. . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

3. SCSI Parameter and Termination Information

Conﬁguring SCSI Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

SCSI Termination Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

4. Troubleshooting SCSI

Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

5. 10/100Base-TX Resources

HP-UX Manual Reference Pages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46

Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

Logging Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

Manual Installation and Conﬁguration . . . . . . . . . . . . . . . . . . . . . . . . . .51

Contacting Your HP Representative. . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

iii

Contents

6. Troubleshooting 10/100Base-TX/9000

Performance Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Corrective Action. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Troubleshooting Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Diagnostic Flowcharts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Flowchart 1: Network Level Loopback Test . . . . . . . . . . . . . . . . . . . . 63

Flowchart 2: 10/100Base-TX Connections/LED Test . . . . . . . . . . . . . 65

Flowchart 3: Conﬁguration Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Flowchart 4: Conﬁguration Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

Flowchart 4A: Conﬁguration Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

Flowchart 5: Conﬁguration Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Flowchart 6: Network Level Loopback Test . . . . . . . . . . . . . . . . . . . . 79

Flowchart 7: Link Level Loopback Test. . . . . . . . . . . . . . . . . . . . . . . . 81

Flowchart 8: Transport Level Loopback Test (using ARPA). . . . . . . . 84

Flowchart 9: Bridge/Gateway Loopback Test . . . . . . . . . . . . . . . . . . . 86

A. 10/100Base-TX Interface Card Statistics

LAN Interface Status Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

RFC 1213 MIB II . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

RFC 1284 Ethernet-Like Interface Statistics. . . . . . . . . . . . . . . . . . . . . 95

Create a Record or Map of Your Internetwork . . . . . . . . . . . . . . . . . . . . 97

B. Hardware Reference Information

Basic Troubleshooting Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

Connector Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

PCI 10/100Base-TX Card Twisted-Pair Connector. . . . . . . . . . . . . . 101

Connector Pin Usage for 10-Mbit/s Twisted-Pair Connector . . . . . . 101

Connector Pin Usage for 100-Mbit/s Twisted-Pair Connector . . . . . 102

Contents

Cabling Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .104

Cable Lengths. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .104

Dual Port 100Base-TX and Dual Port Wide

Ultra 2 SCSI Speciﬁcations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105

C. Hardware Regulatory Statements

FCC Statement (For U.S.A.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108

Canada . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108

EMI Statement (European Community) . . . . . . . . . . . . . . . . . . . . . . . .109

Glossary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

Contents

Preface

The information in this manual is intended for network managers who install and administer 10/100Base-TX networks and Wide Ultra2 SCSI devices. It is assumed the reader is experienced with the basics of local and wide area networking and SCSI technology.

This manual describes how to install, conﬁgure, and troubleshoot the 10/ 100Base-TX and SCSI software and hardware product on HP 9000 PCI systems.

The manual is organized as follows: Chapter 1 , “Installing and Conﬁguring PCI 10/100 Base-TX,” describes

how to install and conﬁgure 10/100Base-TX software and hardware.Also it includes regulatory statements for the USA, Japan, and the European community.

Chapter 2 , “Conﬁguring Network Connectivity Using SAM,” describes the steps to conﬁgure remote connectivity automatically using the System Administration Manager (SAM).

Chapter 3, “SCSI Parameter and Termination Information” describes the steps to conﬁgure remote connectivity automatically using the System Administration Manager (SAM).

Chapter 4, “Troubleshooting SCSI” describes the steps to troubleshoot the SCSI ports on the card.

Chapter 5 , “10/100Base-TX Resources,” provides references to other useful tools for installing, conﬁguring, and maintaining HP 10/100Base-TX software.

Chapter 6 , “Troubleshooting 10/100Base-TX/9000,”' provides ﬂowcharts to help diagnose 10/100Base-TX.

Appendix A , “10/100Base-TX Interface Card Statistics,” deﬁnes the terms listed in the lanadmin(1M) command display.

Appendix B , “Hardware Reference Information,” provides information about card speciﬁcations and cabling requirements.

1 Installing and Conﬁguring PCI

10/100 Base-TX

This document contains information on the PCI 10/100Base-TX/9000 amd Wide Ultra2 SCSI cards for use with the 11.0 operating systems.

Installing and Conﬁguring PCI 10/100 Base-TX

Compatibility and Installation Requirements

Following are the limits of the current PCI 10/100Base-TX/9000:

• The PCI 10/100Base-TX/9000 ports support autonegotiation and

autosensing. You should not normally need to manually conﬁgure the speed, autonegotiation, or duplex mode of the card. If your switch does not support autonegotiation but is set to full-duplex mode, there may be a mismatch between the card and the switch, because the card defaults to half-duplex for switches that do not support autonegotiation. You can determine what the card is set to by using lanadmin -x and reset it if necessary using lanadmin -X. See “Manual Speed and Duplex Mode Conﬁguration” for details.

If you manually set the speed and duplex mode of the Base-TX card, autonegotiation will be turned off.

• Both full- and half-duplex modes are supported. If your hub or switch

does not support autonegotiation, ensure that your hub or switch is set to the desired duplex mode.

• The PCI 0/100Base-TX/9000 LAN software is for use with only the

following protocols: TCP/IP, ARPA, and NFS.

• When using the ioscan -f command to verify installation, the last digit

of the H/W Path (hardware path) will show the port number of the card. The other ﬁelds of the output will show the driver as btlan , and the Hardware Type Description will be PCI.

10 Chapter1

Installing and Conﬁguring PCI 10/100 Base-TX

Manual Speed and Duplex Mode Conﬁguration

Because the PCI 10/100Base-TX/9000 LAN ports support autonegotiation, you should not normally need to manually set the duplex mode. Sometimes you may need to manually set the duplex mode of the card—for example, if the switch is operating at full-duplex but does not autonegotiate. Because the card defaults to half-duplex when autonegotiation is turned off, this could cause a mismatch between the card and switch (at either 10 or100 Mbits/s). To ﬁx this, use the lanadmin -X command as described later in this section.

The CSMA/CD media access method used in IEEE 802.3u-1995 is inherently a half-duplex mechanism. That is, at any one time, there can be only one sender of data on the link segment. It is not possible for devices on either end of the link segment to transmit simultaneously.

Since Category 5 UTP contains multiple pairs of wires, it is possible to have devices on both ends of a link segment sending data to each other simultaneously. This is known as full-duplex operation. While the details of full-duplex operation are not currently deﬁned by IEEE 802.3u-1995 (full-duplex mode essentially involves “turning off” the CSMA/CD access method which is the foundation of IEEE 802.3), the autonegotiation mechanism deﬁned in IEEE 802.3u-1995 allows devices to advertise and conﬁgure themselves to operate in a full-duplex mode which is essentially vendor-speciﬁc. Devices that do not support autonegotiation can sometimes be manually conﬁgured to operate in full-duplex mode.

Full-duplex mode is most commonly found in, and indeed only makes sense for, switches rather than hubs. It may be found in either 10 Mbit/s or 100 Mbit/s switch devices. Full-duplex mode may provide a throughput advantage under some circumstances, but the degree of the advantage is application-dependent.

The PCI 10/100Base-TX ports support both half- and full-duplex operation.

Ensure that the speed, duplex mode, and autonegotiation of the associated switch are conﬁgured the same as on the PCI 10/100Base-TX card. If the switch supports autonegotiation on the ports connected to the cards, this should be enabled as explained in “Autonegotiation and Autosensing”.

Chapter 1 11

Installing and Conﬁguring PCI 10/100 Base-TX

Manual Speed and Duplex Mode Conﬁguration

To manually set the duplex mode of the PCI ports, ﬁrst ensure that your computer has the latest applicable patches installed as listed in the Required and Optional Patches section of this release note.

To list the current speed and duplex mode of the PCI 10/100Base-TX/9000 ports, use the -x option (NOTE: lowercase x) of the lanadmin command. Determine the speed and duplex mode of your hub or switch before performing manual conﬁguration as follows:

lanadmin -x

To manually set the duplex mode of the interface, install one of the patches above and then use the -X option of lanadmin as follows:

lanadmin -X mode

where: mode can be any one of the following strings (and the fd or hd are

case-insensitive):

10fd =10 full-duplex 10hd =10 half-duplex 100fd =100 full-duplex 100hd =100 half-duplex

and

lanadmin -X auto_on

The

ppa

the

ppa

from the output of the lanscan command. Example: If the

to 10Mbits/s and full-duplex mode would be:

ppa

(HP-UX 11.0)

ppa

(on HP-UX 11.0)

ppa

(turns autonegotiation on for HP-UX 11.0)

is the physical point of attachment on HP-UX 11.0. You can get

of the 100Base-TX interface is 5, the command to set the card

lanadmin -X 10fd 5

After issuing the lanadmin -X, you must wait at least 11 seconds before attempting to use the speciﬁed network interface.

If you want the Duplex Mode setting to be effective in all subsequent reboots, you must enter the information in the following ﬁle:

/etc/rc.config.d/hpbtlanconf

Manually conﬁguring the speed or duplex setting of a switch port on

12 Chapter1

Installing and Conﬁguring PCI 10/100 Base-TX

Manual Speed and Duplex Mode Conﬁguration

some switches may disable that switch port from doing autonegotiation. Verify that both the card and the switch port are operating in the same speed and duplex mode as desired.

If you use manual conﬁguration to change the card to a different speed and duplex mode, you may need to turn autonegotiation on ﬁrst before the manual setting takes place.

NOTE Mismatches between the speed, autonegotiation, or duplex mode of the

card and switch will cause incorrect operation.

Chapter 1 13

Installing and Conﬁguring PCI 10/100 Base-TX

Autonegotiation and Autosensing

Autonegotiation is a mechanism deﬁned in the IEEE 802.3u speciﬁcation whereby devices sharing a link segment can exchange information and automatically conﬁgure themselves to operate at the highest capability mode shared between them.

Autonegotiation is like a rotary switch that automatically switches to the correct technology such as 10Base-T or 100Base-TX or between half- and full-duplex modes. Once the highest performance common mode is determined, auto-negotiation passes control of the link to the appropriate technology, sets the appropriate duplex mode, and then becomes transparent until the link is broken.

Following is the IEEE 802.3u-deﬁned hierarchy for resolving multiple common abilities for a 10/100Base-TX card. The PCI 10/100Base-TX/9000 ports provide the means for interfacing various types of HP 9000 workstations and servers to either a 10Base-T or 100Base-TX network. 100Base-TX is a subset of 100Base-T networking deﬁned by the IEEE 802.3u-1995 standard. 100Base-TX provides 100 Mbit/s data transmission over category 5 unshielded twisted-par (UTP) cable. Two pairs of wires in the cable are used—one wire pair is for receiving data, and one wire pair is for transmitting data. The same card port that supports 100Base-TX operation can also support 10Base-T operation.

• 100Base-TX full-duplex

• 100Base-TX half-duplex

• 10Base-T full-duplex

• 10Base-T half-duplex For example, if both devices on the link support 10Base-T (half-duplex)

and 100Base-TX (half-duplex), autonegotiation at both ends will connect the 100Base-TX (half-duplex) instead of the 10Base-T (half-duplex).

Most Fast Ethernet devices on the market today such as hubs and switches do not support autonegotiation. Either the speed and duplex mode of the device are ﬁxed (as is usually the case with hubs), or they are often manually conﬁgured at the desired speed and duplex (as is often the case for switches). However, switches that support autonegotiation are starting to be offered.

14 Chapter1

Installing and Conﬁguring PCI 10/100 Base-TX

What Manuals are Available

If a PCI 10/100Base-TX/9000 port is connected to a device, such as a switch, that is autonegotiating, the PCI card will autonegotiate with the device to mutually determine the highest possible speed and duplex settings between them.

NOTE If a PCI 10/100Base-TX/9000 port is connected to a device that does not

support autonegotiation or a device that has autonegotiation disabled, the PCI port will autosense the speed of the link and set itself accordingly.

The duplex mode of the card will be set to half-duplex in this case. If you want the card to operate in full-duplex mode, you have to set

it using the method described in Manual Speed and Duplex Mode Conﬁguration.

The PCI 10/100Base-TX port will sense when the connection between itself and a hub or switch on the other end of a link has been broken. If a connection is made to another (or the same) device, the autonegotiation and autosensing process will be done again automatically. Autonegotiation and autosensing are also done whenever the interface is reset.

What Manuals are Available

The following documents summarize installation, conﬁguration, veriﬁcation and troubleshooting of the Dual Port 100Base-TX and Dual Port Wide Ultra2 SCSI card:

Dual Port 100Bas-TX and Dual Port Wide Ultra2 SCSI Quick Installation

Chapter 1 15

Installing and Conﬁguring PCI 10/100 Base-TX

Software Availability in Native Languages

The commands used with this product are the ones supported by the Native Language Support Catalog of HP-UX.

16 Chapter1

2 Conﬁguring Network

Connectivity Using SAM

This chapter describes how to conﬁgure remote connectivity using SAM. It contains the following sections:

Conﬁguring Network Connectivity Using SAM

• Step 1: Conﬁguring Network Connectivity

• Step 2: Deleting a Default Gateway (Optional)

18 Chapter2

Conﬁguring Network Connectivity Using SAM

Step 1: Conﬁguring Network Connectivity

Your system may not be able to communicate with other systems, for example, PCs, workstations, servers, etc., until you conﬁgure system-to-system connections by adding an entry in hosts for the remote system. You can use SAM to do this automatically by completing the following steps:

1. At the HP-UX prompt, type: sam

2. Double click Networking and Communications at the SAM main window.

3. Double click Internet Addresses to enable your system to communicate with other systems using the TCP/IP protocol.

SAM displays the remote system names and Internet addresses that are already conﬁgured.

4. Choose Add from the “Actions” menu to open the Add Internet Address window to add the internet address and system name of a remote system.

Use the SAM online help system for information about adding remote system connections.

a. Enter the Internet address for the remote system.

Upon exiting the Internet Address ﬁeld, SAM checks to make sure you have entered a valid IP/Internet address. SAM also determines if a gateway is required for the connection (see step 4c).

b. Enter the remote system name.

Upon exiting the Remote System Name ﬁeld, SAM checks to make sure that connectivity has not already been conﬁgured for this system. If it has, SAM displays an error message.

c. Optionally, choose Add Aliases to open the Add Aliases window if

you want to conﬁgure aliases for a remote system. You can modify or remove alias names for a remote system on this

menu Activate the OK button to perform the task and return to the Add

Chapter 2 19

Conﬁguring Network Connectivity Using SAM

Step 1: Conﬁguring Network Connectivity

Internet Addresses window. Proceed to step 5 if a gateway is not required for this remote

connection. SAM displays ﬁelds for entering gateway information if a gateway

is required for this remote system connection. Use the SAM online help system for information about gateways.

5. Activate the OK button to enable your system to communicate with this system and return to the System-to-System Connectivity object list.

SAM updates the object list to include the remote system you conﬁgured.

NOTE You can modify or remove remote systems and modify default gateways

by highlighting the Remote System Name from the object list and choosing Modify, Remove, or Modify Default Gateway from the “Actions” menu.

6. Choose Exit from the “File” menu.

7. At the Networking Communications window, choose Exit SAM from the “File” menu to leave SAM.

8. Verify remote system conﬁguration. a. View the list of remote systems you can communicate with using a

symbolic name by typing the following command at the HP-UX prompt:

more /etc/hosts

b. View the conﬁgured destinations reached through gateways and

the gateways used to reach those destinations by typing the following command at the HP-UX prompt:

netstat -r

To verify that you can communicate with a remote system via the 10/100Base-TX product, return to chapter 1, “Step 8: Verify the Installation.”

20 Chapter2

Conﬁguring Network Connectivity Using SAM

Step 2: Deleting a Default Gateway

To delete a default gateway that you have added with SAM, do the following:

1. Enter the following command at the HP-UX prompt:

route delete default gateway_hostname

where gateway_hostname is the hostname of the default gateway you want to delete.

2. Edit the /etc/rc.conﬁg.d/netconf ﬁle to remove the corresponding internet routing conﬁguration parameter values for the gateway. For example:

ROUTE_DESTINATION [0] = ROUTE_GATEWAY [0] = ROUTE_COUNT [0] =

Chapter 2 21

Conﬁguring Network Connectivity Using SAM

Step 2: Deleting a Default Gateway

22 Chapter2

3 SCSI Parameter and

Termination Information

SCSI Parameter and Termination Information

Conﬁguring SCSI Parameters

In order to change the SCSI ID, the path for the card of interest must ﬁrst be determined. Once the path is known, the SCSI ID may be changed. The example below lists the commands used to determine the path for the card of interest, change the SCSI ID of the A5838A, and also some of the other parameters of the card.

The machine should be booted to the BCH prompt before beginning this procedure.

The path for the A5838A SCSI card is determined as follows:

- at the Main Menu, type "in" (for information menu)

- at the Information Menu, type "io" (to display I/O interface information) The information displayed should be similar to the following: PCI DEVICE INFORMATION Path Vendor Device Bus Slot Description (dec) Id Id # #

----------- ----- ---- ---- --- --. . SCSI bus cntlr 0/2/0/0 0x1000 0xb 16 6 . . . The path for the card in this example is '0/2/0/0'. Once the path for the card is known:

- type "main" (to return to main menu)

- type "ser" (to display service menu)

- type "scsi" (to display current status of SCSI devices) The information displayed should be similar to the following:

24 Chapter3

SCSI Parameter and Termination Information

SCSI Termination Information

Path (dec) Initiator ID SCSI Rate Auto Term

------------ -------------- ---------- ---------------

. . 0/2/0/0 7 Fast ON . . . The SCSI bus speed (rate) can be changed as follows:

- if at the Main Menu, type "ser" (to display service menu)

- type "scsi rate <path> <speed>"

(where <path> is the path obtained as shown above, and <speed> is 'fast' or 'ultra')

The SCSI ID of the controller card can be changed as follows:

- if at the Main Menu, type "ser" (to display service menu)

- type "scsi init <path> <new ID>"

(where <path> is the path obtained as shown above, and <new ID> is a single digit, 0 - 7)

SCSI Termination Information

The A5838A card is shipped from the factory with autotermination enabled. If the A5838A is placed at the end of a SCSI bus, autotermination is enabled, so there is no need for external terminators.

If the A5838A card is installed in the middle of a SCSI bus, you must change its SCSI ID and disable autotermination for the port by placing a jumper across two-pins on the card. Refer to the Quick Installation Guide for details.

Chapter 3 25

SCSI Parameter and Termination Information

SCSI Termination Information

26 Chapter3

4 Troubleshooting SCSI

Troubleshooting SCSI

Troubleshooting

The A5838A host bus adapter is a single ﬁeld-replaceable unit (FRU) and does not contain any ﬁeld-serviceable parts. Troubleshooting procedures described in this section are limited to verifying that the controller is operational and a valid connection is established.

General Procedure

1. Check the connection. Make sure that the correct cable is used, connected, and operating properly and

that there are no bent pins in any of the connectors.

2. Check SCSI bus compatibility. Ensure transfer rate compatibility with the attached devices using the SCSI boot

menu command.

3. Check the controller. Inspect the controller to make sure it is seated properly in the PCI bus slot. If

necessary, power down the system, reseat the controller, and restart the system.

4. Run diagnostics. If a visual inspection of the controller and cable does not reveal any problems,

or if an action taken as a result of the inspection does not produce a working controller, you may want to run diagnostics to determine whether the controller can communicate and respond to PCI bus instructions. Diagnostics are described in the next section.

28 Chapter4

Troubleshooting SCSI

Troubleshooting

If diagnostics determine that the controller is defective, you must replace it. Contact your local Hewlett-Packard customer representative or call the HP Response Center.

SCSI Bus Compatibility

Use the SCSI command to ensure SCSI controller and SCSI device compatibility by displaying and selecting SCSI bus parameters.

The SCSI command is available from the boot menu displayed after the test station has booted, provided autoboot is disabled.

Command Description

------- ----------AUto [BOot|SEArch ON|OFF] Display or set the specified flag BOot [PRI|ALT|<path> <args>] Boot from a specified path BootTimer [time] Display or set boot delay time CLEARPIM Clear PIM storage CPUconfig [<proc>] [ON|OFF] Configure/Deconfigure Processor DEfault Set the sytem to defined values DIsplay Display this menu ForthMode Switch to the Forth OBP interface IO List the I/O devices in the system LS [<path>|flash] List the boot or flash volume OS [hpux|sppux] Display/Select Operating System PASSword Set the Forth password PAth [PRI|ALT|CON] [<path>] Display or modify a path PDT [CLEAR|DEBUG] Display/clear Non-Volatile PDT state PIM_info [cpu#] [HPMC|TOC|LPMC] Display PIM of current or any CPU RESET [hard|debug] Force a reset of the system RESTrict [ON|OFF] Display/Select restricted access toForth SCSI [INIT|RATE] [bus slot val] List/Set SCSI controller parms SEArch [<path>] Search for boot devices SECure [ON|OFF] Display or set secure boot mode TIme [cn:yr:mo:dy:hr:mn[:ss]] Display or set the real-time clock VErsion Display the firmware versions Command:

Figure 1 Boot Menu

Chapter 4 29

Troubleshooting SCSI

Troubleshooting

SCSI Command

Use the SCSI command to ensure SCSI controller and SCSI device compatibility by displaying and selecting SCSI bus parameters.

The SCSI command is available from the boot menu displayed after the test station has booted, provided autoboot is disabled.

The SCSI parameters can be displayed and modiﬁed using the SCSI command. The syntax for this command is:

SCSI rate bus# slot# rate SCSI init bus# slot# id#

bus# The bus number slot# The adapter’s slot number rate The adapter’s transfer rate

0: no limit 10: Fast SCSI 20: Ultra SCSI

id# The SCSI ID number of the adapter

Display and Set SCSI Transfer Rates

1. Display the SCSI transfer rate for an adapter using the SCSI command. The following example lists the SCSI transfer rate for an adapter on bus 5 slot

command: SCSI rate 5 2

PCI device /5.2 = no limit

Enter the command without specifying a bus or slot number to list transfer rates for all bus and slot numbers:

command: SCSI rate

2. Set the SCSI transfer rate for an adapter using the SCSI command. The following example sets the adapter on bus 5 slot 2 to Fast SCSI and then

displays the results:

command: SCSI rate 5 2 10

30 Chapter4

+ 90 hidden pages