IBM 8265 Nways ATM Switch Installation Manual

8265 Nways ATM Switch IBM

Installation Guide

SA33-0441-02

8265 Nways ATM Switch IBM

Installation Guide

SA33-0441-02

Note|

Before using this information and the product it supports, be sure to read the general information under Appendix C, “Notices” on page 69.

Third Edition (September 1998)

The information contained in this manual is subject to change from time to time. Any such changes will be reported in subsequent revisions.

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Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii

Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix

General Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix

Safety Notice for United Kingdom ........................................ ix

About this Book .................................................. xi

Who Should Use this Book ............................................ xi

How to Use This Book ............................................... xi

Prerequisite Knowledge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi

Where to Find More Information ......................................... xi

Chapter 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Before You Begin .................................................. 1

Installation Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Chapter 2. Unpacking the 8265 ........................................ 3

8265 Shipping Group Contents .......................................... 3

Removing the Switch From the Shipping Box ................................. 4

Unpacking the 8265 Switch .......................................... 4

Additional Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Unpacking Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Chapter 3. Installing the Chassis ....................................... 7

Installing the Cable Management Tray in a Rack ............................... 8

Pre-installation Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Installing the Tray ................................................ 10

Installing the 8265 in a Rack ........................................... 11

Pre-installation Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Pre-installation Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Installing the Switch in a Telco Rack ..................................... 15

Installing the Switch in a Metric Rack .................................... 16

Installing the Switch on a Table or Shelf .................................... 17

Chapter 4. Installing Power Supplies .................................... 19

Installing an AC Power Supply .......................................... 20

Installing a DC Power Supply ........................................... 21

Before You Begin ................................................ 21

Preparing and Installing the DC Input Power Cords ............................ 23

Installing the DC Power Supply Unit ..................................... 25

Installing the Power Supply Bay Grille ...................................... 26

Chapter 5. Installing Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Before You Start .................................................. 27

Unpacking Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Installing the Control Point and Switch Module ................................. 29

Before You Begin ................................................ 29

Installing the PCMCIA Card .......................................... 30

Installing the Memory Upgrade ........................................ 31

Installing the Module .............................................. 32

 Copyright IBM Corp. 1994, 1998 iii

Installing the Controller Module .......................................... 33

Considerations When Installing Two Controller Modules .......................... 33

Installing the Module .............................................. 33

Guidelines for Installing 8265 Media Modules ................................. 35

Cautionary Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Installation Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Guidelines for Installing 8260 ATM Media Modules ............................ 37

Chapter 6. Attaching a Configuration Console ............................... 39

Configuring the Modem .............................................. 40

Example Parameter Settings ........................................... 41

ASCII Terminal Cabling .............................................. 43

VT100 Emulation on PS/2 ............................................. 44

Chapter 7. Completing the Installation ................................... 45

Checking Your Installation ............................................. 45

Powering on the 8265 ............................................... 46

DC Power Source ................................................ 46

AC Power Source ................................................ 46

Verifying Your Installation ............................................. 47

Verifying Power Supply Operation ...................................... 48

Verifying Fan Operation ............................................ 49

Verifying Controller Module Operation .................................... 50

Verifying Control Point and Switch Module Installation ........................... 51

Verifying Configuration Console Installation ................................. 53

Appendix A. Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Troubleshooting Fault Conditions ........................................ 55

Specific CPSW2 Module Problems ...................................... 57

Problems After Power-On .......................................... 57

Problems When Hot-Plugging ....................................... 58

Appendix B. Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Routine Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Replacing a Defective Power Supply ...................................... 61

Replacing an AC Power Supply ........................................ 62

Replacing a -48 Volt DC Power Supply ................................... 64

Replacing a -48 Volt DC Power Supply Cable ............................... 65

Replacing a Defective Fan Unit .......................................... 66

Replacing a Defective Controller Module .................................... 68

Appendix C. Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

Product Page/Warranties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

Statement of Limited Warranty .......................................... 70

Production Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

The IBM Warranty ................................................ 70

Warranty Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

Extent of Warranty ............................................... 71

Limitation of Liability .............................................. 72

Warranty and Maintenance Service ...................................... 73

Industry Standards Reflected in This Product ................................. 75

European Union (EU) Statement ......................................... 76

Year 2000 Statement ............................................... 76

Electronic Emission Notices ............................................ 77

iv IBM 8265: Installation Guide

Radio Frequency Interference (RFI) Compliance ................................ 79

NEBS Certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

Trademarks and Service Marks ......................................... 82

Bibliography . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

8265 Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

Related Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

ATM Forum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

Contents v

vi IBM 8265: Installation Guide

Figures

1. Unpacking the Switch Shipping Box .................................... 4

2. Cable Management Tray Rack Mount Positions ............................. 9

3. Installing a Clip Nut in the Rack ...................................... 10

4. Installing the Cable Management Tray in a Rack ............................ 10

5. Telco and Metric Rack Screw Locations ................................. 13

6. Attaching a Rubber Foot to the 8265 Switch ............................... 17

7. 8265 Power Supply Locations ....................................... 19

8. Installing an AC Power Supply ....................................... 20

9. -48 Volt DC Power Supply ......................................... 22

10. -48 Volt DC Input Power Cord ....................................... 23

11. Connecting the Red/Black Wires ..................................... 24

12. Connecting the Cable Ground Wire .................................... 24

13. -48 Volt DC Power Supply Keyed-Connector .............................. 25

14. Installing the Power Supply Bay Grille .................................. 26

15. 8265 Control Point and Switch Module .................................. 29

16. Installing a Controller Module ....................................... 34

17. Modem Cable Attachment (Part Number 59G0278) ........................... 41

18. ASCII Terminal Cabling ........................................... 43

19. PC or PS/2 Cabling ............................................. 44

20. 8265 Controller Module LEDs ....................................... 50

21. 8265 CPSW2 Module LEDs ........................................ 52

22. Replacing a Defective Power Supply ................................... 62

23. Replacing a Defective Fan Unit ...................................... 66

 Copyright IBM Corp. 1994, 1998 vii

viii IBM 8265: Installation Guide

Safety Information

General Safety

The IBM 8265 Nways ATM Switch complies with the following industry safety standards or their updated

versions:

Safety of Information Technology Equipment:

Number Date Description

IEC 950 1991 International Standard

C22.2 No. 950 1989 (Canadian Standard)

UL 1950 1991 (U.S.A. Standard)

EN 60 950 1992 (European CENELEC Standard)

AS/NZS 3260 1993 (New Zealand Standard)

Safety of Laser Products:

Number Date Description

IEC 825-1 1993 Equipment Classification, Requirements, and User's

Guide IEC 825-2 1993 Safety of Optical Fiber Communications Systems EN 60825-1 1993 (European CENELEC IEC 825-1 Standard) EN 60825-2 1993 (European CENELEC IEC 825-2 Standard)

Safety Notice for United Kingdom

The network adapter interfaces housed within the IBM 8265 Nways ATM Switches are approved separately, each one having its own independent approval number. These interface adapters, supplied by IBM, do not use or contain excessive voltages. An excessive voltage is one that exceeds 42.4 V peak ac or 60 Vdc. They interface with the IBM 8265 Nways ATM Switch using Safety Extra Low Voltages (SELV) only. In order to maintain the separate (independent) approval of the IBM adapters, it is essential that other optional cards, not supplied by IBM, do not use mains voltages or any other excessive voltages. Seek advice from a competent engineer before installing other adapters not supplied by IBM.

 Copyright IBM Corp. 1994, 1998 ix

x IBM 8265: Installation Guide

About this Book

This book gives a description of the activities required to unpack, prepare, and install the IBM 8265 Nways ATM Switch and accessories.

Who Should Use this Book

This book is intended for the following people at your site:  Hardware installer.

How to Use This Book

This book is divided into the following chapters and appendixes. It essentially covers all the activities necessary to install your 8265.

Chapter 1 provides a summary of the installation steps required to install the 8265. Chapter 2 describes the basic and optional components, and how to unpack them. Chapter 3 describes how to install the 8265 chassis in a rack or on a table or shelf. Chapter 4 describes how to install the power supplies (AC or DC). Chapter 5 details how to install the Control Point and Switch, Controller, and media modules. Chapter 6 explains how to attach a configuration console to the 8265. Chapter 7 describes how to complete the installation of the 8265, by checking that the required

components are installed, powering on the 8265, and verifying that the installed components are working properly.

Appendix A provides troubleshooting information. Appendix B details maintenance and service procedures. Appendix C contains various notices related to this product.

Prerequisite Knowledge

This book assumes that you are familiar with the IBM 8265 Nways ATM Switch, as described in the

8265 Nways ATM Switch Product Description

, GA33–0449.

Where to Find More Information

IBM

Refer to the “Bibliography” on page 83 for a list of IBM manuals that contain related information and publications for the 8265 switch.

World Wide Web ;You can access the latest news and information about IBM network products, customer service and support, and microcode upgrades via the Internet, at the URL:

http://www.networking.ibm.com

 Copyright IBM Corp. 1994, 1998 xi

xii IBM 8265: Installation Guide

Chapter 1. Introduction

This chapter describes the steps required to install your IBM 8265 Nways ATM Switch. These steps are explained in detail in later chapters of this book.

Before You Begin

The 8265 ATM Switch is designed for easy access, maintenance, installation, and upgrade by service personnel. When installing the switch, be sure to comply with the environmental and power guidelines given in the

 Ambient (room) Temperature: 10 to 40° Celsius (50 to 104° Fahrenheit)  Relative humidity: 8–85%, non-condensing  Power source (AC or DC) within 6 feet (approximately 2.7 meters)  Safety regulations stipulate that the table, shelf or rack on which the 8265 rests should be able to

support at least three times the weight of a fully loaded 8265. A fully loaded 8265 weighs approximately 120 lbs., or 54 kg, so the table, shelf, or rack must be able to support 360 lbs. or 163 kg.

IBM 8265 Nways ATM Switch Planning and Site Preparation Guide

, SA33-0460. In particular:

 That the surface on which the 8265 is to be installed is level.

 Copyright IBM Corp. 1994, 1998 1

Installation Summary

Table 1 describes the installation steps and the order in which you perform them.

Table 1. Installation Steps

Step Description See

1 Unpack the 8265 and components. page 3 2 Check that you have all the required components. pages 3 to 6 3 Install the cable management tray in the rack if you plan to install the

8265 in a rack (optional). 4 Install the 8265 chassis in a rack or on a table or shelf page 11 or 17 5 Install the power supplies (AC or DC). page 20 or 21 6 Install the power supply bay grille. page 26 7 Install the Control Point and Switch module(s). page 29 8 Install the Controller module(s). Optional when CPSW2 Control Point

and Switch modules used. 9 Determine the number, types, and slot locations of media modules

you plan to install in the 8265 before installing your first module.

10 Connect a configuration console to the Control Point and Switch

module.

11 Check that you have installed all the required components. page 45 12 Power on the 8265. page 46 13 Verify that all components are operating correctly. page 47

page 8

page 33

page 36

page 39

2 IBM 8265: Installation Guide

Chapter 2. Unpacking the 8265

This chapter describes how to unpack the 8265 chassis and additional components.

8265 Shipping Group Contents

An 8265 ATM Switch is automatically shipped with the following components:

 17-slot chassis, with the following components already installed:

– Backplane

– Three fan units – Fourteen blank single-slot faceplates – Two blank Control Point and Switch module slot faceplates – Two blank Controller Module slot faceplates – Two rack mount flanges

 A power supply bay grille to manage power supply cords  Cables and connectors for connecting a configuration console:

– Adaptor DTE/DCE Cable DB9/DB25 – Interposer "Null modem"

– Gender Changer

 8265 installation hardware (includes screws and clip nuts needed to assemble the 8265)  Rubber feet kit for table or shelf installations (consists of 4 rubber feet and 4 screws).

 Copyright IBM Corp. 1994, 1998 3

Removing the Switch From the Shipping Box

This section explains how to unpack your switch. Refer to the section earlier in this chapter for a list of shipped items.

Note: All shipping boxes are reusable. After removing all contents, replace the packing materials and

store the shipping box for future use.

Unpacking the 8265 Switch

To remove a switch from the shipping box:

1. Place the switch shipping box on the floor or on a table.

CAUTION: UL safety requirements stipulate that a table used to support the switch and shipping box prior to table top switch installation should be capable of supporting approximately three times the weight of the switch as shipped.

Switch weight as shipped averages about 49 lbs. (22 kg), so a table used to support the hub must support 147 lbs. (66 kg).

2. Cut the tape that covers the seam on the top of the box and remove the foam packing material. To remove the foam packing material, pull it straight up.

3. Squeeze and remove the locking inserts at the bottom of the box.

Foam packing material

Corrugated sleeve

To remove the locking inserts, press the inner latch mechanism together to release them and then pull them out.

Figure 1. Unpacking the Switch Shipping Box

4. Remove the corrugated sleeve by pulling it straight up.

5. Pull off the tape from the top of the bag that covers the switch.

6. Remove the bag by pulling it straight up.

7. Remove the power supply grille from the switch shipping box.

4 IBM 8265: Installation Guide

8. Place the switch next to the rack or on the table on which it will be installed. Be sure to stand the

switch on its bottom (do not lay the switch down on its top or back).

9. Place all packing materials in the switch shipping box and store the box for future use.

Note: Do not remove blank faceplates from the switch until after the switch has been installed in its

desired location. If modules do not slide easily into the switch, it may be because the switch has been lifted after some or all blank faceplates have been removed.

Chapter 2. Unpacking the 8265 5

Additional Components

The following components are required to operate the 8265 (these components are ordered separately from the 8265 chassis):

 Power supplies (at least two are required), either:

– 415 W AC (Feature Code 8027), or – 295 W DC –48 V (Feature Code 8026 or 8028)

You cannot mix AC and DC power supplies.

 Control Point and Switch (CPSW) module(s), either:

– Feature Code 6501 (standard model), or – Feature Code 6502 (enhanced model, also referred to as CPSW2), with integrated power control.

One Control Point and Switch module is required for normal operation. A second module made be installed for redundancy purposes, provided both modules are of the same type.

 Controller module(s) (Feature Code 8000)

Only required when the standard CPSW module (Feature Code 6501) is used. May be installed in conjuction with CPSW2 module (Feature Code 6502) if you prefer power control to be handled by a Controller module instead of the CPSW2 module.

One Controller module is required for normal operation. A second module made be installed for redundancy purposes.

 A PCMCIA card containing the Control Point and Switch microcode. This card must be inserted in the

Control Point and Switch module before the module is inserted in the 8265. The following cards are available:

– Base microcode with UNI and IISP functions (Feature Code 6545) – Enhanced microcode with UNI, IISP, and PNNI functions (Feature Code 6546)

 Media modules (at least one is required). Check that these components are available before commencing the installation of the 8265. The following components are optional (and are ordered separately from the 8265 chassis):

 Rack Mount Kit, Part Number 25H1834.

 Cable Management Tray, Part Number 13J8751.

 16 MB Memory upgrade (Feature Code 6516) for the standard Control Point and Switch modules

(Feature Code 6501). Note: This memory upgrade is required when running the enhanced version of microcode.

 Documentation CD-ROM (automatically included when PCMCIA card ordered), Feature Code 6508.

Unpacking Components

Unpack components only when you are ready to install them. Instructions and guidelines for unpacking components are given in each section later in the book.

6 IBM 8265: Installation Guide

Chapter 3. Installing the Chassis

This chapter describes step by step instructions to install the chassis in a rack, or on a table or shelf.

Note: The information and procedures in this chapter should be used only by service personnel

CAUTION: To reduce the possibility of personal injury or serious damage to the switch, install the switch with the help of a partner.

This is especially important for rack installations because you must hold the switch in place while securing the switch to the rack.

Installing the Cable Management Tray in a Rack

The Cable Management Tray manages module cables at the front of the 8265 by feeding them under the 8265 and out the back. Use is optional. The Cable Management Tray kit includes:

 Two rack-mount flanges (used to secure the tray to the rack)

 Installation rack-mount hardware (screws and clip nuts)

 Cable Management Tray.

This section describes:  Pre-installation guidelines

 Installing the Cable Management Tray.

8 IBM 8265: Installation Guide

Pre-installation Guidelines

Before installing the cable management tray in a rack, determine which cable management tray rack mount position is best for you by examining the following:

 Location in the rack where the switch will be installed (refer to “Pre-installation Guidelines” on

page 13).

 Depth of the rack in to which the switch will be installed.  Space required for ventilation. A minimum of 15 cm (6 in.) is required between the rear of the 8265

and the nearest wall or vertical surface.

 Room required for module cables to bend.  Proximity of other devices in the rack and their installation or environmental requirements.

Figure 2 shows cable management tray rack mount positions.

Flush Mount

5/8" (1.6 cm) Recess

2 1/8" (5.4 cm) Recess

2 3/4" (7.0 cm) Recess

Figure 2. Cable Management Tray Rack Mount Positions

Table 2 provides cable management tray rack settings.

Table 2. Rack Mount Settings for Cable Management Tray

Setting Description

Flush mount Mounts the tray flush with the front of the rack. 5/8-inch (1.6 cm) recess Recesses the tray 5/8-inch (1.6 cm) from the front of the rack. 2 1/8-inch (5.4 cm) recess Recesses the tray 2 1/8-inch (5.4 cm) from the front of the rack. 2 3/4-inch (7.0 cm) recess Recesses the tray 2 3/4-inch (7.0 cm) from the front of the rack.

Select any rack position that is at least 28 inches (approximately 71 cm) from the top of the rack or the next higher unit in the rack.

Be sure to select a rack position that leaves you enough room to install the cable management tray below the installed switch.

Chapter 3. Installing the Chassis 9

Installing the Tray

To install the Cable Management Tray in the selected rack:

1. Attach the two rack mount flanges (supplied) to the Cable Management Tray using the flathead screws provided (eight, 8-32 x 1/4-inch screws, four per side). Install the screws using a Phillips- head screwdriver. Installed Cable Management Tray rack mount flanges are shown in Figure 4.

2. Install the clip nuts provided (four) onto the front of the rack at the position where the Cable Management Tray will be attached. Figure 3 shows the clip nut installation.

Be sure to thread the screw through this nut to securely attach each clip nut to the rack.

Figure 3. Installing a Clip Nut in the Rack

Figure 4 shows the Cable Management Tray in the rack.

Installed rack mount flange

Installed cable management tray

Installed rack mount flange

Figure 4. Installing the Cable Management Tray in a Rack

3. Place the Cable Management Tray in the rack and attach the tray to the front of the rack using the screws provided (four, 10-32 x 1/2-inch screws). Install the screws with a Phillips head screwdriver.

10 IBM 8265: Installation Guide

Installing the 8265 in a Rack

This section describes:  Pre-installation Precautions  Pre-installation Guidelines

 Installing the Switch in a Telco Rack  Installing the Switch in a Metric Rack.

Use the following rack mount installation precautions guidelines to ensure safety and optimal performance. These precautions and guidelines apply to all versions of the switch. Review all guidelines prior to installation.

All rack mount illustrations provided in this chapter show the switch installed in a Telco rack.

Chapter 3. Installing the Chassis 11

Pre-installation Precautions

Before installing the 8265 in an equipment rack, observe the following precautions:

 Because the equipment rack environment can cause increased ambient temperatures and reduced air

flow, review the switch specifications and site requirements contained in

Planning and Site Preparation Guide

 To ensure mechanical stability and to avoid circuit overloading and improper grounding, follow the rack

manufacturer's instructions for rack installation. If the instructions are unclear, consult a qualified electrician.

 For proper ventilation, install the switch in a rack that has an open back.  With a full complement of modules and load-sharing power supplies, the 8265 Switch weighs

approximately 120 lbs. (54 kg). Therefore, install your switch before you install modules and power supplies.

, SA33-0460.

IBM 8265 Nways ATM Switch

12 IBM 8265: Installation Guide

Pre-installation Guidelines

Before mounting the 8265 in a rack:

1. First make sure the selected rack can support at least three times the weight of a fully- loaded switch.

2. Bolt the rack to the floor.

3. Brace the top of the rack to the wall.

4. Ensure that there is sufficient vertical space in your rack for each 8265 you wish to install.

5. Install patch panels in the rack for easier cable management.

6. Rack mount flanges are set to flush mount at the factory. If desired, change the rack mount flange

position by removing the screws that attach each flange to the switch. When re-installing the rack mount flanges on the switch, make sure both flanges are set to the same position before you re-install the screws. Also, make certain that all removed screws are re-installed correctly.

7. When installing the switch, continue to support the weight of the switch until after you have installed

four of the eight screws (two screws per rack mount flange). Install the four remaining screws to fully secure both rack mount flanges to the rack.

Telco rack and Metric rack screw locations are shown in Figure 5

Screw position (Telco rack) Screw position (Metric rack)

Screw position (Metric rack) Screw position (Telco rack)

Figure 5. Telco and Metric Rack Screw Locations

8. Install the Cable Management Tray beneath the switch. The tray is designed to manage the cables

attached to the front of the switch by feeding them under and through the back of the unit. Use of the cable tray is optional. You can mount the cable tray onto the rack in one of four positions. Mount the switch using the same rack mount position settings as those used to mount the cable tray.

Chapter 3. Installing the Chassis 13

CAUTION: You can install the switch in the rack either before or after you install the Cable Management Tray, but the tray must be installed below the switch. Never allow an installed cable tray to support the weight of the switch. The weight of a switch resting on a rack mounted cable tray may cause the tray to buckle or separate from the rack. Personal injury may result.

14 IBM 8265: Installation Guide

Installing the Switch in a Telco Rack

To install the switch in a Telco rack:

1. Install each of the 8 clip nuts provided onto each side of the front of the rack (4 clip nuts per rack

mount flange). Install each clip nut behind a hole into which you plan to install a trusshead screw. (See Figure 5 on page 13.)

2. Slide the switch into the rack until both rack mount flanges are flush with the front of the rack.

CAUTION: Continue to support the weight of the switch until after you have installed four of the eight screws (2 screws per rack-mount flange).

If you attempt to place the weight of the rack-mounted 8265 switch on fewer than four fully installed screws, the switch may drop off of the rack. Personal injury or serious damage to the switch may result.

3. Match the uppermost open slot on each rack mount flange with the corresponding hole on the rack.

Hold the switch in place until you complete step 4. The remaining three open slots on each rack mount flange automatically line up when each uppermost open slot is matched to a hole on the rack.

4. Secure the switch to the rack with the screws provided (eight, 10-32 x 1/2-inch screws):

a. Install one screw in the uppermost open slot on b. Install an additional screw in each rack mount flange, and tighten all screws completely before you

allow the weight of the switch to rest (unaided) on the rack. A fully installed screw is flush with the surface of each rack mount flange.

c. Install the remaining screws in open slots on each rack mount flange (for a total of four screws per

rack mount flange). Install each screw so it is (approximately) equidistant from the screw installed directly above it and the screw installed directly below it. Tighten the screws completely.

each

of the rack mount flanges.

Chapter 3. Installing the Chassis 15

Installing the Switch in a Metric Rack

Note: When installing the switch in a metric rack, install the screws in the

To install the switch in a Metric Rack:

1. Install each of the eight clip nuts provided onto the front of the rack (install four clip nuts per rack mount flange). Install each clip nut behind a hole into which you plan to install a trusshead screw. (See Figure 5 on page 13.)

2. Slide the switch into the rack until the switch is flush with the front of the rack.

CAUTION: Continue to support the weight of the switch until after you have installed four of the eight screws (2 screws per rack-mount flange).

3. Match the uppermost closed slot on each rack mount flange to the uppermost hole on the rack where you previously installed a clip nut. Do not attempt to install screws in open slots on either rack mount flange. Hold the switch in place until you complete step 4

4. Secure the switch to the rack with the screws provided (eight, 10-32 x 1/2-inch screws).

a. Install one screw in the uppermost closed slot on each rack mount flange. b. Install an additional screw in each rack mount flange, and tighten all screws completely before you

allow the weight of the switch to rest (unaided) on the rack. A fully installed screw is flush with the surface of each rack mount flange.

closed

slots.

c. Install the remaining screws in closed slots on each rack mount flange (for a total of four screws

per rack mount flange). Install each screw so it is (approximately) equidistant from the screw installed directly above it and the screw installed directly below it. Tighten all screws completely.

16 IBM 8265: Installation Guide

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