Cisco Nexus 9236C, Nexus 92160YC-X Hardware Installation Manual

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Cisco Nexus 9236C NX-OS Mode Switch Hardware Installation Guide

First Published: 2016-09-19

Last Modified: 2018-10-19

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800 553-NETS (6387)

Fax: 408 527-0883

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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 following information is for FCC compliance of Class A devices: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio-frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference, in which case users will be required to correct the interference at their own expense.

The following information is for FCC compliance of Class B devices: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If the equipment causes interference to radio or television reception, which can be determined by turning the equipment off and on, users are encouraged to try to correct the interference by using one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help.

Modifications to this product not authorized by Cisco could void the FCC approval and negate your authority to operate the product

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 and phone numbers used in this document are not intended to be actual addresses and phone numbers. Any examples, command display output, network topology diagrams, and other figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses or phone numbers in illustrative content is unintentional and coincidental.

Cisco and the Cisco logo are trademarks or registered trademarks of Cisco and/or its affiliates in the U.S. and other countries. To view a list of Cisco trademarks, go to this URL: www.cisco.com

go trademarks. Third-party trademarks mentioned are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any

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PREFACE

CHAPTER 1

CHAPTER 2

Preface vii

Audience vii

Documentation Conventions vii

Related Documentation for Cisco Nexus 9000 Series NX-OS Software viii

Documentation Feedback x

Obtaining Documentation and Submitting a Service Request x

Overview 1

Preparing the Site 5

Temperature Requirements 5

Humidity Requirements 5

Altitude Requirements 5

Dust and Particulate Requirements 6

Minimizing Electromagnetic and Radio Frequency Interference 6

CHAPTER 3

Shock and Vibration Requirements 7

Grounding Requirements 7

Planning for Power Requirements 7

Airflow Requirements 9

Rack and Cabinet Requirements 9

Clearance Requirements 10

Installing the Switch Chassis 13

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Contents

Safety 13

Installation Options with Rack-Mount Kits, Racks, and Cabinets 14

Airflow Considerations 14

Installation Guidelines 14

Unpacking and Inspecting the Switch 16

Installing the Switch using the NXK-ACC-KIT-1RU Rack-mount Kit 17

Installing the Switch using the N3K-C3064-ACC-KIT Rack-mount Kit 20

Grounding the Chassis 24

Starting the Switch 25

CHAPTER 4

CHAPTER 5

Connecting the Switch to the Network 29

Setting Up the Management Interface 29

Connecting to Host Servers 29

Guidelines for Connecting Ports 30

Maintaining Transceivers and Optical Cables 32

Replacing Modules 33

Replacing a Fan Module During Operations 33

Replacing a Power Supply Module 34

Removing an AC Power Supply 34

Removing an HVAC/HVDC Power Supply 35

Removing a DC Power Supply 36

Installing an AC Power Supply 36

Installing an HVAC/HVDC Power Supply 37

Installing a DC Power Supply 38

Wiring a 48 V DC Electrical Connector Block 39

APPENDIX A

Rack Specifications 43

Overview of Racks 43

General Requirements for Cabinets and Racks 43

Requirements Specific to Standard Open Racks 44

Requirements Specific to Perforated Cabinets 44

Cable Management Guidelines 44

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Contents

APPENDIX B

System Specifications 45

Environmental Specifications 45

Switch Dimensions 45

Switch and Module Weights and Quantities 46

Transceiver and Cable Specifications 46

Switch Power Input Requirements 46

Power Specifications 47

650-W AC Power Supply Specifications 47

1200-W HVAC/HVDC Power Supply Specifications 47

930-W DC Power Supply (Port-Side Intake) Specifications 48

930-W DC Power Supply (Port-Side Exhaust) Specifications 48

Power Cable Specifications 49

AC Power Cables Supported by NX-OS Mode Switches 49

HVAC/HVDC Power Cables Supported by ACI-Mode and NX-OS Mode Switches 50

DC Power Cable Specifications 51

Regulatory Standards Compliance Specifications 51

APPENDIX C

APPENDIX D

APPENDIX E

LEDs 53

Switch Chassis LEDs 53

Lane Link LEDs 54

Fan Module LEDs 54

Power Supply LEDs 54

Additional Kits 57

Rack Mount Kit NXK-ACC-KIT-1RU 57

Rack Mount Kit N3K-C3064-ACC-KIT 57

Site Preparation and Maintenance Records 59

Site Preparation Checklist 59

Contact and Site Information 60

Chassis and Module Information 61

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Contents

Cisco Nexus 9236C NX-OS Mode Switch Hardware Installation Guide

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Preface

• Audience, on page vii

• Documentation Conventions, on page vii

• Related Documentation for Cisco Nexus 9000 Series NX-OS Software, on page viii

• Documentation Feedback, on page x

• Obtaining Documentation and Submitting a Service Request, on page x

Audience

This publication is for hardware installers and network administrators who install, configure, and maintain Cisco Nexus switches.

Documentation Conventions

Command descriptions use the following conventions:

bold

DescriptionConvention

Bold text indicates the commands and keywords that you enter literally as shown.

Italic

[x | y]

{x | y}

[x {y | z}]

variable

Italic text indicates arguments for which the user supplies the values.

Square brackets enclose an optional element (keyword or argument).[x]

Square brackets enclosing keywords or arguments separated by a vertical bar indicate an optional choice.

Braces enclosing keywords or arguments separated by a vertical bar indicate a required choice.

Nested set of square brackets or braces indicate optional or required choices within optional or required elements. Braces and a vertical bar within square brackets indicate a required choice within an optional element.

Indicates a variable for which you supply values, in context where italics cannot be used.

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Documentation Feedback

• Cisco Nexus 9504 NX-OS Mode Switch Hardware Installation Guide

• Cisco Nexus 9508 NX-OS Mode Switch Hardware Installation Guide

• Cisco Nexus 9516 NX-OS Mode Switch Hardware Installation Guide

• Regulatory, Compliance, and Safety Information for the Cisco Nexus 3000 and 9000 Series

Documentation Feedback

To provide technical feedback on this document, or to report an error or omission, please send your comments to nexus9k-docfeedback@cisco.com. We appreciate your feedback.

Obtaining Documentation and Submitting a Service Request

For information on obtaining documentation, using the Cisco Bug Search Tool (BST), submitting a service request, and gathering additional information, see What's New in Cisco Product Documentation, at:

https://www.cisco.com/warp/public/687/Directory/DirTAC.shtml.

Subscribe to What's New in Cisco Product Documentation, which lists all new and revised Cisco technical documentation as an RSS feed and delivers content directly to your desktop using a reader application. The RSS feeds are a free service.

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Overview

CHAPTER 1

Overview

• Overview, on page 1

The Cisco Nexus 9236C switch (N9K-C9236C) is a 1 rack unit (RU) switch that has the following ports:

• 36 100-Gigabit QSFP28 interface ports that support 100-, 50-, 40-, 25-, 10- and 1-Gigabit speeds. You can use the following adapters with these ports:

• CVR-2QSFP28-8SFP which provides eight SFP/SFP+/SFP28 ports for each vertical pair of ports on the switch. The top four SFP/SFP+/SFP28 ports connect to the upper QSFP28 port of the switch pair, and the bottom SFP/SFP+/SFP28 ports connect to the lower QSFP28 port.

• CVR-QSFP-SFP10G which provides an SFP/SFP+ port for one QSFP/QSFP28 port on the switch.

Note

These ports also support breakout cables with four 10-Gigabit SFP+ transceivers (such as the QSFP-4X10G-AOCxM and QSFP-4SFP10G-CUxM cables).

• 1 100/1000 management port

• 1 console port

• 2 software-defined ports

• 1 USB port for saving or loading switch configurations

The chassis for this switch includes the following user-replaceable components:

• Fan modules (four) with the following airflow choices:

• Port-side intake fan module with burgundy coloring (NXA-FAN-30CFM-B)

• Port-side exhaust fan module with blue coloring (NXA-FAN-30CFM-F)

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Overview

Note

Due to the airflow design though this switch (N9K-C9236C) when used in conjunction with this fan (NXA-FAN-30CFM-F), it requires the fan to be run at full speed at all time. This change was made as of release 7.0(3)I7(3).

• Power supply modules (two—one for operations and one for redundancy [n+1]) with the following choices:

• 650-W port-side intake AC power supply with burgundy coloring (NXA-PAC-650W-PI)

• 650-W port-side exhaust AC power supply with blue coloring (NXA-PAC-650W-PE)

• 1200-W HVAC/HVDC dual-direction airflow power supply with white coloring (N9K-PUV-1200W)

• 930-W port-side intake DC power supply with green coloring (UCSC-PSU-930WDC)

• 930-W port-side exhaust DC power supply with gray coloring (UCS-PSU-6332-DC)

Note

Both power supplies should be the same type. Do not mix AC, DC, or HVAC/HVDC power supplies.

Note

All fan modules and power supplies must use the same airflow direction during operations. If you are using the 1200-W HVAC/HVDC power supplies, those power supplies automatically use the same airflow direction as used by the other modules in the switch.

The following figure shows the switch features on the port side of the chassis.

4Beacon (BCN), Status

(STS), and Environment

36 100-Gigabit QSFP+/QSFP28 ports

(ENV) LEDs

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Overview

5Lane link status LEDs for 4x10-Gigabit port configuration (1 LED lit

Screw holes (6) for attaching a mounting

bracket to show the lane being checked or all LEDs off when all 4 lanes are being checked)

Grounding pad6Lane shift button3

To determine which transceivers, adapters, and cables are supported by this switch, see the Cisco Transceiver

Modules Compatibility Information document.

The following figure shows the switch features on the power supply side of the chassis.

Console port (1)6Power supply modules (1 or 2) (AC power supplies shown) with slots numbered 1 (left) and 2 (right)

USB port (1)7Fan modules (4) with slots numbered from 1 (left) to 4 (right)

Management port (RJ-45)8L1 port (software defined)3

9L2 port (software defined)4

Screw holes (6) for

attaching a mounting

bracket

Grounding pad10Beacon (BCN) and Status (STS) LEDs

Depending on whether you plan to position the ports in a hot or cold aisle, you can order the fan and power supply modules with port-side intake or port-side exhaust airflow. For port-side intake airflow, the fan and AC power supply modules have burgundy coloring (DC power supply modules have green coloring). For port-side exhaust airflow, the fan and AC power supplies have blue coloring (DC power supply modules have gray coloring). You can also order the 1200-W HVAC/HVDC power supply which has dual-direction airflow

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Overview

with white coloring. Dual-direction airflow modules automatically use the airflow direction of the other modules installed in the switch.

The fan and power supply modules are field replaceable and you can replace one fan module or one power supply module during operations so long as the other modules are installed and operating. If you have only one power supply installed, you can install the replacement power supply in the open slot before removing the original power supply.

Note

All of the fan and power supply modules must have the same direction of airflow. Otherwise, the switch can overheat and shut down. If you are installing a dual-direction power supply, that module will automatically use the same airflow direction as the other modules in the switch.

Overview

Caution

If the switch has port-side intake airflow (burgundy coloring for fan modules), you must locate the ports in the cold aisle. If the switch has port-side exhaust airflow (blue coloring for fan modules), you must locate the ports in the hot aisle. If you locate the air intake in a hot aisle, the switch can overheat and shut down.

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Preparing the Site

• Temperature Requirements, on page 5

• Humidity Requirements, on page 5

• Altitude Requirements, on page 5

• Dust and Particulate Requirements, on page 6

• Minimizing Electromagnetic and Radio Frequency Interference, on page 6

• Shock and Vibration Requirements, on page 7

• Grounding Requirements, on page 7

• Planning for Power Requirements, on page 7

• Airflow Requirements, on page 9

• Rack and Cabinet Requirements, on page 9

• Clearance Requirements, on page 10

Temperature Requirements

The switch requires an operating temperature of 32 to 104 degrees Fahrenheit (0 to 40 degrees Celsius). If the switch is not operating, the temperature must be between –40 to 158 degrees Fahrenheit (–40 to 70 degrees Celsius).

CHAPTER 2

Humidity Requirements

High humidity can cause moisture to enter the switch. Moisture can cause corrosion of internal components and degradation of properties such as electrical resistance, thermal conductivity, physical strength, and size. The switch is rated to withstand from 5- to 95-percent (noncondensing) relative humidity.

Buildings in which the climate is controlled by air-conditioning in the warmer months and by heat during the colder months usually maintain an acceptable level of humidity for the switch equipment. However, if the switch is located in an unusually humid location, use a dehumidifier to maintain the humidity within an acceptable range.

Altitude Requirements

This switch is rated to operate at altitudes from 0 to 13,123 feet (0 to 4,000 meters). If you operate this switch at a higher altitude (low pressure), the efficiency of forced and convection cooling is reduced and can result

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Dust and Particulate Requirements

in electrical problems that are related to arcing and corona effects. This condition can also cause sealed components with internal pressure, such as electrolytic capacitors, to fail or to perform at a reduced efficiency.

Dust and Particulate Requirements

Exhaust fans cool power supplies and system fans cool switches by drawing in air and exhausting air out through various openings in the chassis. However, fans also ingest dust and other particles, causing contaminant buildup in the switch and increased internal chassis temperature. Dust and particles can act as insulators and interfere with the mechanical components in the switch. A clean operating environment can greatly reduce the negative effects of dust and other particles.

In addition to regular cleaning, follow these precautions to avoid contamination of your switch:

• Do not permit smoking near the switch.

• Do not permit food or drink near the switch.

Preparing the Site

Minimizing Electromagnetic and Radio Frequency Interference

Electromagnetic interference (EMI) and radio frequency interference (RFI) from the switch can adversely affect other devices, such as radio and television (TV) receivers. Radio frequencies that emanate from the switch can also interfere with cordless and low-power telephones. Conversely, RFI from high-power telephones can cause spurious characters to appear on the switch monitor.

RFI is defined as any EMI with a frequency above 10 kHz. This type of interference can travel from the switch to other devices through the power cable and power source or through the air as transmitted radio waves. The Federal Communications Commission (FCC) publishes specific regulations to limit the amount of EMI and RFI that are emitted by computing equipment. Each switch meets these FCC regulations.

To reduce the possibility of EMI and RFI, follow these guidelines:

• Cover all open expansion slots with a blank filler plate.

• Always use shielded cables with metal connector shells for attaching peripherals to the switch.

When wires are run for any significant distance in an electromagnetic field, interference can occur to the signals on the wires with the following implications:

• Bad wiring can result in radio interference emanating from the plant wiring.

• Strong EMI, especially when it is caused by lightning or radio transmitters, can destroy the signal drivers and receivers in the chassis and even create an electrical hazard by conducting power surges through lines into equipment.

Note

To predict and prevent strong EMI, you need to consult experts in radio frequency interference (RFI).

The wiring is unlikely to emit radio interference if you use a twisted-pair cable with a good distribution of grounding conductors. If you exceed the recommended distances, use a high-quality twisted-pair cable with one ground conductor for each data signal when applicable.

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Preparing the Site

Shock and Vibration Requirements

Caution

If the wires exceed the recommended distances, or if wires pass between buildings, give special consideration to the effect of a lightning strike in your vicinity. The electromagnetic pulse that is caused by lightning or other high-energy phenomena can easily couple enough energy into unshielded conductors to destroy electronic switches. You will want to consult experts in electrical surge suppression and shielding if you had similar problems in the past.

Shock and Vibration Requirements

The switch has been shock- and vibration-tested for operating ranges, handling, and earthquake standards.

Grounding Requirements

The switch is sensitive to variations in voltage that is supplied by the power sources. Overvoltage, undervoltage, and transients (or spikes) can erase data from memory or cause components to fail. To protect against these types of problems, ensure that there is an earth-ground connection for the switch. You can connect the grounding pad on the switch either directly to the earth-ground connection or to a fully bonded and grounded rack.

When you properly install the chassis in a grounded rack, the switch is grounded because it has a metal-to-metal connection to the rack. Alternatively, you can ground the chassis by using a customer-supplied grounding cable that meets your local and national installation requirements. For U.S. installations, we recommend 6-AWG wire. Connect your grounding cable to the chassis with a grounding lug (provided in the switch accessory kit) and to the facility ground.

Note

You automatically ground AC power supplies when you connect them to AC power sources. For DC power supplies, you must connect a grounding wire when wiring the power supply to the DC power source.

Planning for Power Requirements

The switch includes two power supplies (1-to-1 redundancy with current sharing) in one of the following combinations:

• Two 650-W AC power supplies

• Two 1200-W HVAC/HVDC power supplies

• Two 930-W DC power supplies

Note

Both power supplies must be the same type. Do not mix AC, DC, and HVAC/HVDC power supplies in the same chassis.

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Planning for Power Requirements

Note

For n+1 redundancy, you can use one or two power sources for the two power supplies. For n+n redundancy, you must use two power sources and connect each power supply to a separate power source.

The power supplies are rated to output up to 650 W (AC power supplies), up to 1200 W (HVAC/HVDC power supplies), or up to 930 W (DC power supplies), but the switch requires less than those amounts of power from the power supply. To operate the switch you must provision enough power from the power source to cover the requirements of both the switch and a power supply. Typically, this switch and a power supply require 275 W of power input from the power source, but you must provision as much as 640 W of power input from the power source to cover peak demand.

Note

Some of the power supply modules have Underwriter Labs (UL) rating capabilities that exceed the switch requirements. When calculating your power requirements, use the switch requirements to determine the amount of power that is required for the power supplies.

To minimize the possibility of circuit failure, make sure that each power-source circuit that is used by the switch is dedicated to the switch.

Preparing the Site

Note

Warning

Note

Warning

For AC input application, please refer to the following statement:

Statement 1005—Circuit Breaker

This product relies on the building's installation for short-circuit (overcurrent) protection. Ensure that the protective devices are rated not greater than 20A (North America), 16A (Europe), and 13A (UK).

For DC input application, please refer to the following statement:

Statement 1005—Circuit Breaker

This product relies on the building's installation for short-circuit (overcurrent) protection.

• Ensure that the protective devices are rated not greater than 40A when the switch is powered with regular DC power supplies (rated 48-60VDC).

• Ensure that the protective devices are rated not greater than 10A when the switch is powered with HVDC power supplies (rated 240-350VDC).

Note

For the power cables to use with the power supplies, see Power Cable Specifications, on page 49.

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Preparing the Site

Airflow Requirements

The switch is positioned with its ports in either the front or the rear of the rack depending on your cabling and maintenance requirements. You must have fan and power supply modules that move the coolant air from the cold aisle to the hot aisle in one of the following ways:

• Port-side exhaust airflow—Cool air enters the chassis through the fan and power supply modules in the cold aisle and exhausts through the port end of the chassis in the hot aisle.

• Port-side intake airflow—Cool air enters the chassis through the port end in the cold aisle and exhausts through the fan and power supply modules in the hot aisle.

• Dual-direction airflow—The direction of the installed fan modules determines the airflow.

You can identify the airflow direction of each fan and power supply module by its coloring as follows:

• Blue coloring indicates port-side exhaust airflow.

• Burgundy coloring indicates port-side intake airflow.

Airflow Requirements

• White coloring on HVAC/HVDC power supplies indicates dual-direction airflow.

• Gray coloring on DC power supplies indicates port-side exhaust airflow.

• Green coloring on DC power supplies indicates port-side intake airflow.

Note

To prevent the switch from overheating and shutting down, you must position the air intake for the switch in a cold aisle. The fan and power supply modules must have the same direction of airflow (even if their coloring is different). If you must change the airflow direction for the switch, you must shutdown the switch before changing the modules.

Rack and Cabinet Requirements

You can install the following types of racks or cabinets for your switch:

• Standard perforated cabinets

• Solid-walled cabinets with a roof fan tray (bottom-to-top cooling)

• Standard open four-post Telco racks

Work with your cabinet vendors to determine which of their cabinets meet the following requirements or see the Cisco Technical Assistance Center (TAC) for recommendations:

• Use a standard 19-inch (48.3-cm), four-post Electronic Industries Alliance (EIA) cabinet or rack with mounting rails that conform to English universal hole spacing per section 1 of the ANSI/EIA-310-D-1992 standard.

• The depth of a four-post rack must be 24 to 32 inches (61.0 to 81.3 cm) between the front and rear mounting rails (for proper mounting of the bottom-support brackets or other mounting hardware).

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Clearance Requirements

Preparing the Site

• Required clearances between the chassis and the edges of its rack or the interior of its cabinet are as follows:

• 4.5 inches (11.4 cm) between the front of the chassis and the interior of the cabinet (required for cabling).

• 3.0 inches (7.6 cm) between the rear of the chassis and the interior of the cabinet (required for airflow in the cabinet if used).

• No clearance is required between the chassis and the sides of the rack or cabinet (no side airflow).

Also, you must have power receptacles that are located within reach of the power cords that are used with the switch.

Warning

Statement 1048—Rack Stabilization

Stability hazard. The rack stabilizing mechanism must be in place, or the rack must be bolted to the floor before you slide the unit out for servicing. Failure to stabilize the rack can cause the rack to tip over.

Clearance Requirements

Provide the chassis with adequate clearance between the chassis and any other rack, device, or structure so that you can properly install the chassis. Provide the chassis with adequate clearance to route cables, provide airflow, and maintain the switch. For the clearances required for an installation of this chassis in a four-post rack, see the following figure.

Depth of the chassis5Chassis1

Maximum extension of the bottom-support rails6Vertical rack-mount posts and rails2

Depth of the front clearance area (equal to the

7Chassis width3

depth of the chassis).

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Preparing the Site

Width of the front clearance area (equal to the

width of the chassis with two rack-mount brackets that are attached to it).

Note

Both the front and rear of the chassis must be open to both aisles for airflow.

Clearance Requirements

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Clearance Requirements

Preparing the Site

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Safety

CHAPTER 3

Installing the Switch Chassis

• Safety, on page 13

• Installation Options with Rack-Mount Kits, Racks, and Cabinets, on page 14

• Airflow Considerations, on page 14

• Installation Guidelines, on page 14

• Unpacking and Inspecting the Switch, on page 16

• Installing the Switch using the NXK-ACC-KIT-1RU Rack-mount Kit, on page 17

• Installing the Switch using the N3K-C3064-ACC-KIT Rack-mount Kit, on page 20

• Grounding the Chassis, on page 24

• Starting the Switch, on page 25

Before you install, operate, or service the switch, see the Regulatory, Compliance, and Safety Information for the Cisco Nexus 3000 and 9000 Series for important Safety Information.

Warning

Statement 1071—Warning Definition

IMPORTANT SAFETY INSTRUCTIONS

This warning symbol means danger. You are in a situation that could cause bodily injury. Before you work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar with standard practices for preventing accidents. Use the statement number provided at the end of each warning to locate its translation in the translated safety warnings that accompanied this device.

SAVE THESE INSTRUCTIONS

Statement 1017—Restricted Area

This unit is intended for installation in restricted access areas. A restricted access area can be accessed only through the use of a special tool, lock and key, or other means of security.

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Installation Options with Rack-Mount Kits, Racks, and Cabinets

Installing the Switch Chassis

Warning

Statement 1030—Equipment Installation

Only trained and qualified personnel should be allowed to install, replace, or service this equipment.

Installation Options with Rack-Mount Kits,Racks, andCabinets

The rack-mount kit enables you to install the switch into racks of varying depths. You can position the switch with easy access to either the port connections or the fan and power supply modules.

You can install the switch using the following rack-mount options:

• Rack-mount kit (NXK-ACC-KIT-1RU) which you can order from Cisco. This option offers you easy installation, greater stability, increased weight capacity, added accessibility, and improved removability with front and rear removal.

• Rack-mount kit (N3K-C3064-ACC-KIT) which you can order from Cisco.

You can install the switch in the following types of racks:

• Open EIA rack

• Perforated EIA cabinet

The rack or cabinet that you use must meet the requirements listed the in General Requirements for Cabinets

and Racks, on page 43 section.

Note

You are responsible for verifying that your rack and rack-mount hardware comply with the guidelines that are described in this doc.

Airflow Considerations

The switch comes with fan and power supply modules that have either port-side intake or port-side exhaust airflow for cooling the switch. If you are positioning the port end of the switch in a cold aisle, make sure that the switch has port-side intake fan modules with burgundy coloring. If you are positioning the fan and power supply modules in a cold aisle, make sure that the switch has port-side exhaust fan modules with blue colorings. All fan modules must have the same direction of airflow.

Installation Guidelines

When installing the switch, follow these guidelines:

• Ensure that there is adequate clearance space around the switch to allow for servicing the switch and for adequate airflow.

• Ensure that you are positioning the switch in a rack so that it takes in cold air from the cold aisle and exhausts air to the hot aisle. If there is blue coloring on the fan modules, the switch is configured for

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Installing the Switch Chassis

Installation Guidelines

port-side exhaust airflow and you must position the module side of the switch in a cold aisle. If there is burgundy coloring on the fan modules, the switch is configured for port-side intake airflow and you must position the port side of the switch in a cold aisle.

• Ensure that the chassis can be adequately grounded. If the switch is not mounted in a grounded rack, we recommend connecting the system ground on the chassis directly to an earth ground.

• Ensure that the site power meets the power requirements for the switch. If available, you can use an uninterruptible power supply (UPS) to protect against power failures.

Caution

Avoid UPS types that use ferroresonant technology. These UPS types can become unstable with the switch, which can have substantial current draw fluctuations because of fluctuating data traffic patterns.

• Ensure that circuits are sized according to local and national codes. Typically, this often requires one or both of the following:

• AC power supplies typically require at least a 15-A or 20-A AC circuit, 100 to 240 VAC, and a frequency of 50 to 60 Hz.

• HVAC/HVDC power supplies require the following:

• HVAC input voltage range of 230 to 277 VAC with a frequency of 50 to 60 Hz

• HVDC input voltage range of -240 to -380 VDC

• DC power supplies require the following:

• DC input voltage range of –48 to -60 VDC nominal (self-ranging, –40 to –60 VDC)

• DC line input current (steady state) of 23 A peak at –48 VDC

Caution

To prevent loss of input power, ensure the total maximum loads on the circuits supplying power to the switch are within the current ratings for the wiring and breakers.

Note

Warning

For AC input application, please refer to the statement below:

Statement 1005—Circuit Breaker

This product relies on the building's installation for short-circuit (overcurrent) protection. Ensure that the protective devices is rated not greater than 20A (North America), 16A (Europe), and 13A (UK).

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Unpacking and Inspecting the Switch

Note

For DC input application, please refer to the statement below:

Installing the Switch Chassis

Warning

Statement 1005—Circuit Breaker

This product relies on the building's installation for short-circuit (overcurrent) protection. Ensure that the protective devices is rated not greater than 40A for the regular DC power supplies (rated 48-60VDC) and 10A for the HVDC power supplies.

Unpacking and Inspecting the Switch

Before you install the switch, be sure to unpack and inspect the switch for damage or missing components. If anything is missing or damaged, contact your customer service representative immediately.

Tip

Keep the shipping container in case the chassis requires shipping at a later time.

Before you begin

Before you unpack the switch and before you handle any switch components, be sure that you are wearing a grounded electrostatic discharge (ESD) strap. To ground the strap, attach it directly to an earth ground or to a grounded rack or grounded chassis (there must be a metal-to-metal connection to the earth ground).

Step 1 Compare the shipment to the equipment list provided by your customer service representative and verify that you have

received all items, including the following:

• Accessory Kit

Note

For the contents of these kits, see the Additional Kits.

Step 2 Check for damage and report any discrepancies or damage to your customer service representative. Have the following

information ready:

• Invoice number of shipper (see packing slip)

• Model and serial number of the damaged unit

• Description of damage

• Effect of damage on the installation

Step 3 Check to be sure that each of the power supply and the fan tray modules have the expected direction of airflow as follows:

• Port-side intake airflow modules

• Burgundy (fan modules and AC power supplies)

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Installing the Switch Chassis

• Green (DC power supplies)

• Port-side exhaust airflow modules

• Blue (fan modules and AC power supplies)

• Gray (DC power supplies)

• Dual-direction airflow power-supply modules

• White (see the color of the fan modules to determine the airflow direction used)

Installing the Switch using the NXK-ACC-KIT-1RU Rack-mount Kit

Note

All power supplies and fan modules must have the same direction of airflow.

Installing the Switch using the NXK-ACC-KIT-1RU Rack-mount Kit

To install the switch, you must attach front and rear mounting brackets to the switch, install slider rails on the rear of the rack, slide the switch onto the slider rails, and secure the switch to the front of the rack. Typically, the front of the rack is the side easiest to access for maintenance.

Note

You must supply the eight 10-32 or 12-24 screws required to mount the slider rails and switch to the rack.

Before you begin

• You have inspected the switch shipment to ensure that you have everything ordered.

• Make sure that the switch rack-mount kit includes the following parts:

• Front rack-mount brackets (2)

• Rear rack-mount brackets (2)

• Slider rails (2)

• M4 x 0.7 x 8-mm Phillips countersink screws (12)

• The rack is installed and secured to its location.

Step 1 Install two front rack-mount brackets and the two rear rack-mount brackets to the switch as follows:

a) Determine which end of the chassis is to be located in the cold aisle as follows:

• If the switch has port-side intake modules (fan modules with burgundy coloring), position the switch so that its ports will be in the cold aisle.

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Installing the Switch using the NXK-ACC-KIT-1RU Rack-mount Kit

• If the switch has port-side exhaust modules (fan modules with blue coloring), position the switch so that its fan and power supply modules will be in the cold aisle.

Installing the Switch Chassis

Note

If the power supply modules have white coloring, look at the fan modules to determine the airflow direction for the switch.

b) Position the front rack-mount bracket and the rear rack-mount bracket so that its screw holes are aligned to the screw

holes on the side of the chassis.

Note

You can align the holes in the rack-mount bracket to the holes on the side of the chassis (see the two ways to mount these brackets on a typical chassis, in following figure). The holes that you use depend on the requirements of your rack and the amount of clearance required for interface cables (3 inches [7.6 mm] minimum) and module handles (1 inch [2.5 mm] minimum).

c) Secure the front-mount bracket and the back-mount bracket to the chassis using four M4 screws and tighten each

screw to 12 in-lb (1.36 N·m) of torque.

d) Repeat Step 1 for the other front rack-mount bracket and the other back-mount bracket on the other side of the switch

and be sure to position that bracket the same distance from the front of the switch.

Note

Depending on the chassis depth, the back rack-mount bracket may not fit. In that case the back rack-mount bracket is not needed.

Step 2 If you are not installing the chassis into a grounded rack, you must attach a customer-supplied grounding wire to the

chassis as explained in the Grounding the Chassis, on page 24 section. If you are installing the chassis into a grounded rack, you can skip this step.

Step 3 Install the slider rails on the rack or cabinet as follows:

a) Determine which two posts of the rack or cabinet you should use for the slider rails. Of the four vertical posts in the

rack or cabinet, two will be used for the front mount brackets attached to the easiest accessed end of the chassis, and the other two posts will have the slider rails.

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Installing the Switch Chassis

b) Position a slider rail at the desired level on the back side of the rack and use 12-24 screws or 10-32 screws, depending

on the rack thread type, to attach the rails to the rack (see the following figure). Tighten 12-24 screws to 30 in-lb (3.39 N·m) of torque and tighten 10-32 screws to 20 in-lb (2.26 N·m) of torque.

Installing the Switch using the NXK-ACC-KIT-1RU Rack-mount Kit

c) Repeat Step 3 to attach the other slider rail to the other side of the rack.

To make sure that the slider rails are at the same level, you should use a level tool, tape measure, or carefully count the screw holes in the vertical mounting rails.

Step 4 Insert the switch into the rack and attach it as follows:

a) Holding the switch with both hands, position the two rear rack-mount brackets on the switch between the rack or

cabinet posts that do not have slider rails attached to them (see the following figure).

b) Align the two rear rack-mount guides on either side of the switch with the slider rails installed in the rack. Slide the

rack-mount guides onto the slider rails, and then gently slide the switch all the way into the rack until the front rack-mount brackets come in contact with two rack or cabinet posts.

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Installing the Switch using the N3K-C3064-ACC-KIT Rack-mount Kit

c) Holding the chassis level, insert screws (12-24 or 10-32, depending on the rack type) in each of the two front rack-mount

brackets (using a total of six screws) and into the cage nuts or threaded holes in the vertical rack-mounting rails (see the following figure).

Installing the Switch Chassis

d) Tighten the 10-32 screws to 20 in-lb (2.26 N·m) or tighten the 12-24 screws to 30 in-lb (3.39 N·m).

Step 5 If you attached a grounding wire to the chassis grounding pad, connect the other end of the wire to the facility ground.

InstallingtheSwitchusingtheN3K-C3064-ACC-KITRack-mount Kit

Note

You must supply the eight 10-32 or 12-24 screws required to mount the slider rails and switch to the rack.

Before you begin

• You have inspected the switch shipment to ensure that you have everything ordered.

• Make sure that the switch rack-mount kit includes the following parts:

• Front rack-mount brackets (2)

• Rear rack-mount brackets (2)

• Slider rails (2)

• M4 x 0.7 x 8-mm Phillips countersink screws (12)

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Installing the Switch Chassis

• The rack is installed and secured to its location.

Step 1 Install two front-mount brackets to the switch as follows:

a) Determine which end of the chassis is to be located in the cold aisle as follows:

• If the switch has port-side intake modules (fan modules with burgundy coloring), position the switch so that its ports will be in the cold aisle.

• If the switch has port-side exhaust modules (fan modules with blue coloring), position the switch so that its fan and power supply modules will be in the cold aisle.

Installing the Switch using the N3K-C3064-ACC-KIT Rack-mount Kit

Note

If the power supply modules have white coloring, look at the fan modules to determine the airflow direction for the switch.

b) Position a front-mount bracket so that four of its screw holes are aligned to the screw holes on the side of the chassis.

Note

You can align any four of the holes in the front rack-mount bracket to four of the six screw holes on the side of the chassis (see the two ways to mount these brackets on a typical chassis, in following figure). The holes that you use depend on the requirements of your rack and the amount of clearance required for interface cables (3 inches [7.6 mm] minimum) and module handles (1 inch [2.5 mm] minimum).

the chassis

Front rack-mount bracket aligned to the module end

5Front rack-mount bracket aligned to the port end of

of the chassis

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Installing the Switch using the N3K-C3064-ACC-KIT Rack-mount Kit

6Four M4 screws used to attach the bracket to the

chassis

7Rear rack-mount guide aligned to the module end of

the chassis

8Two M4 screws used to attach the bracket to the

chassis

c) Secure the front-mount bracket to the chassis using four M4 screws and tighten each screw to 12 in-lb (1.36 N·m)

of torque.

d) Repeat Step 1 for the other front rack-mount bracket on the other side of the switch and be sure to position that bracket

the same distance from the front of the switch.

Step 2 Install the two rear rack-mount brackets on the chassis as follows:

a) Align the two screw holes on a rear rack-mount bracket to the middle two screw holes in the remaining six screw

holes on a side of the chassis. If you are aligning the guide to holes that are near the port connections end of the chassis, see Callout 3 in the previous figure. Otherwise, see Callout 7 in the previous figure.

b) Attach the guide to the chassis using two M4 screws (see Callout 4 or 8 in the previous figure). Tighten the screws

to 12 in-lb (1.36 N·m) of torque.

c) Repeat Step 2 for the other rear rack-mount bracket on the other side of the switch.

Installing the Switch Chassis

Four M4 screws used to attach the bracket to the chassis

Two M4 screws used to attach the bracket to the chassis

Rear rack-mount guide aligned to the port end of the chassis

Step 3 If you are not installing the chassis into a grounded rack, you must attach a customer-supplied grounding wire to the

chassis as explained in the Grounding the Chassis, on page 24 section.. If you are installing the chassis into a grounded rack, you can skip this step.

Step 4 Install the slider rails on the rack or cabinet as follows:

a) Determine which two posts of the rack or cabinet you should use for the slider rails. Of the four vertical posts in the

rack or cabinet, two will be used for the front mount brackets attached to the easiest accessed end of the chassis, and the other two posts will have the slider rails.

b) Position a slider rail at the desired level on the back side of the rack and use two 12-24 screws or two 10-32 screws,

depending on the rack thread type, to attach the rails to the rack (see the following figure). Tighten 12-24 screws to 30 in-lb (3.39 N·m) of torque and tighten 10-32 screws to 20 in-lb (2.26 N·m) of torque.

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Installing the Switch Chassis

rack

c) Repeat Step 3 to attach the other slider rail to the other side of the rack.

To make sure that the slider rails are at the same level, you should use a level tool, tape measure, or carefully count the screw holes in the vertical mounting rails.

Step 5 Insert the switch into the rack and attach it as follows:

a) Holding the switch with both hands, position the two rear rack-mount brackets on the switch between the rack or

cabinet posts that do not have slider rails attached to them (see the following figure).

Installing the Switch using the N3K-C3064-ACC-KIT Rack-mount Kit

Two customer-supplied 12-24 or 10-32 screws used

2Slider rail with screw holes aligned to screw holes in

to attach each slider rail to the rack

Front-mount brackets.3Align the two rear rack-mount bracket guides with

the slider rails installed in the rack.

Mounting rails on rack or cabinet posts.4Slide the rack-mount guides onto the slider rails until the front rack-mount brackets come in contact with the front rack-mount rails.

b) Align the two rear rack-mount guides on either side of the switch with the slider rails installed in the rack. Slide the

rack-mount guides onto the slider rails, and then gently slide the switch all the way into the rack until the front rack-mount brackets come in contact with two rack or cabinet posts.

c) Holding the chassis level, insert two screws (12-24 or 10-32, depending on the rack type) in each of the two front

rack-mount brackets (using a total of four screws) and into the cage nuts or threaded holes in the vertical rack-mounting rails (see the following figure).

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Grounding the Chassis

Installing the Switch Chassis

12-24 or 10-32 screws on each side.

Front-mount bracket.2

d) Tighten the 10-32 screws to 20 in-lb (2.26 N·m) or tighten the 12-24 screws to 30 in-lb (3.39 N·m).

Step 6 If you attached a grounding wire to the chassis grounding pad, connect the other end of the wire to the facility ground.

Mounting rails on rack or cabinet posts.3Fasten the chassis to the front of the rack with two

Grounding the Chassis

The switch chassis is automatically grounded when you properly install the switch in a grounded rack with metal-to-metal connections between the switch and rack.

You can also ground the chassis, which is required if the rack is not grounded, by attaching a customer-supplied grounding cable. Attach the cable to the chassis grounding pad and the facility ground.

Warning

Statement 1024—Ground Conductor

This equipment must be grounded. Never defeat the ground conductor or operate the equipment in the absence of a suitably installed ground conductor. Contact the appropriate electrical inspection authority or an electrician if you are uncertain that suitable grounding is available.

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Installing the Switch Chassis

Starting the Switch

Warning

Step 1 Use a wire-stripping tool to remove approximately 0.75 inch (19 mm) of the covering from the end of the grounding

wire. We recommend 6-AWG wire for the U.S. installations.

Step 2 Insert the stripped end of the grounding wire into the open end of the grounding lug. Use a crimping tool to crimp the

lug to the wire, see the following figure. Verify that the ground wire is securely attached to the grounding lug by attempting to pull the wire out of the crimped lug.

Statement 1046—Installing or Replacing the Unit

When installing or replacing the unit, the ground connection must always be made first and disconnected last.

Before you begin

Before you can ground the chassis, you must have a connection to the earth ground for the data center building.

3Chassis grounding pad1

Step 3 Secure the grounding lug to the chassis grounding pad with two M4 screws, see the previous figure. Tighten the screws

to 11 to 15 in-lb (1.24 to 1.69 N·m) of torque.

Step 4 Prepare the other end of the grounding wire and connect it to the facility ground.

Grounding cable, with 0.75 in. (19 mm) of insulation that is stripped from one end, which is inserted into the grounding lug and crimped in place

2 M4 screws are used to secure the grounding lug to the chassis

Starting the Switch

You start the switch by connecting it to its dedicated power source. If you need n+1 redundancy, you must connect each of the power supplies to one or two power sources. If you need n+n redundancy, you must connect each power supply in a switch to a different power source.

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Starting the Switch

Installing the Switch Chassis

Before you begin

• The switch must be installed and secured to a rack or cabinet.

• The switch must be adequately grounded.

• The rack must be close enough to the dedicated power source so that you can connect the switch to the power source by using a designated power cables.

• You have the designated power cables for the power supplies that you are connecting to the dedicated power sources.

Note

Depending on the outlet receptacle on your AC power distribution unit, you might need an optional jumper power cord to connect the switch to your outlet receptacle.

• The switch is not connected to the network (this includes any management or interface connections).

• The fan and power supply modules are fully secured in their chassis slots.

All of the fan slots must be filled with fan modules and the power supply slots must be filled with the same types of power supplies (do not mix AC and DC power supplies).

Step 1 For each AC power supply, do the following:

a) Using the recommended AC power cable for your country or region, connect one end to the AC power supply. b) Connect the other end of the power cable to the AC power source.

Step 2 For each HVAC/HVDC power supply, connect it to a power source as follows:

a) Using the recommended high voltage power cable for your country or region, connect the Anderson Power Saf-D-Grid

connector on the power cable to the power receptacle on the power supply. Make sure that the connector clicks when fully pushed into the receptacle.

b) Connect the other end of the power cable to a power source.

• When connecting to an HVAC power source, insert the C14 or LS-25 plug in a receptacle for the HVAC power source.

• When connecting to an HVDC power source, do the following:

1. Verify that the power is turned off at a circuit breaker for the power source terminals.

2. Remove the nuts from each of the terminal posts for the power supply.

3. Place the power cable negative-wire terminal ring on the negative terminal for the power source and secure

them with a terminal nut.

4. Place the power cable positive-wire terminal ring on the positive terminal for the power source and secure

them with a terminal nut.

5. Place the power cable ground-wire terminal ring on the ground terminal for the power source and secure

them with a terminal nut.

6. If there is a safety cover for the power source terminals, place and secure it over the terminals to avoid an

electrical shock hazard.

7. Turn on the power at the power source circuit breaker.

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Installing the Switch Chassis

Step 3 For each DC power supply, do the following:

a) Turn off the circuit breaker for the power source to avoid an electrical shock hazard. b) Verify that the power cable wires from the power source are connected to a connector block. c) Insert the connector block into the receptacle on the power supply. Make sure that the connector block clicks when

fully inserted in the receptacle and does not pull out. d) If there is a safety cover for the terminals, place and secure it over the terminals to avoid an electrical shock hazard. e) Turn on the power at the circuit breaker for the DC power source.

Step 4 Verify that the power supply LED is on and green.

Step 5 Listen for the fans; they should begin operating when the power supply is powered.

Step 6 After the switch boots, verify that the following LEDs are lit:

• On the fan modules, the Status (STA or STS) LED is green.

If a fan module Status LED is not green, try reinstalling the fan module.

• After initialization, the switch chassis Status (labeled as STA or STS) LED is green.

Step 7 Verify that the system software has booted and the switch has initialized without error messages.

Starting the Switch

A setup utility automatically launches the first time that you access the switch and guides you through the basic configuration. For instructions on how to configure the switch and check module connectivity, see the appropriate Cisco Nexus 9000 Series configuration guide.

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Starting the Switch

Installing the Switch Chassis

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Connecting the Switch to the Network

• Setting Up the Management Interface, on page 29

• Connecting to Host Servers, on page 29

• Guidelines for Connecting Ports, on page 30

• Maintaining Transceivers and Optical Cables, on page 32

Setting Up the Management Interface

The management port (MGMT ETH) provides out-of-band management, which enables you to use the command-line interface (CLI) to manage the switch by its IP address. This port uses a 10/100/1000 Ethernet connection with an RJ-45 interface.

Before you begin

The switch must be powered on.

CHAPTER 4

Step 1 Connect the RJ-45, UTP cable to the MGMT ETH port on the switch.

Step 2 Connect the other end of the cable to a 10/100/1000 Ethernet port on a network device.

What to do next

You are ready to connect the interface ports on each of the line cards to the network.

Connecting to Host Servers

The switch has 36 ports that connect to host servers. You can configure each of these ports for 100-, 40-, 25-, 10-, or 1-Gigabit speeds as follows:

• For 100 Gigabits per second, use QSFP28 transceivers on both ends of each optical cable.

• For 40 Gigabits per second, use QSFP+ transceivers on both ends of each optical cable.

• For 25 Gigabits per second, you can do either of the following:

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Guidelines for Connecting Ports

• For 10-Gigabit connectivity, you can do one of the following:

Connecting the Switch to the Network

• Use a breakout cable with a QSFP28 transceiver on one end and four SFP25 transceivers on the other ends. To configure one or more ports to use this cable, use the interface breakout module module_number port low_port_number[-high_port_number] map 25g-4x command. For the Cisco Nexus 9236C switch, use 1 for the module_number. If you are configuring only one port, use the port number in place of low_port_number. If you are configuring a range of ports, specify the port numbers from low to high, such as port 2-15.

Note

You can use a breakout cable that is up to 9.8 feet (3 meters) in length.

• Use a CVR-2QSFP28-8SFP adapter for each 100-Gigabit port to operate at 25-Gigabits and configure the port or range of ports to operate at 25-Gigabits by using the interface breakout module module_number port low_port_number[-high_port_number] map 25g command. For the Cisco Nexus 9236C switch, use 1 for the module_number. If you are configuring only one port, use the port number in place of low_port_number. If you are configuring a range of ports, specify the port numbers from low to high, such as port 2-15.

• Use a QSFP-to-SFP adapter, such as the CVR-QSFP-SFP10G adapter, so that you can connect SFP+ or SFP transceivers to the QSFP28/QSFP+ ports. The 10-Gigabit speed is automatically set up through the adapter connection.

• Use a breakout cable with a QSFP+ transceiver on the switch end and four SFP+ transceivers on the other cable ends. To configure one or more ports to use this cable, use the interface breakout module module_number port low_port_number[-high_port_number] map 10g-4x command. For the Cisco Nexus 9236C switch, use 1 for the module_number. If you are configuring only one port, use the port number in place of low_port_number. If you are configuring a range of ports, specify the port numbers from low to high, such as port 2-15.

To determine which transceivers and cables are supported by this switch, see

http://www.cisco.com/c/en/us/support/interfaces-modules/transceiver-modules/products-device-support-tables-list.html.

To see the transceiver specifications and installation information, see

http://www.cisco.com/c/en/us/support/interfaces-modules/transceiver-modules/products-installation-guides-list.html.

Guidelines for Connecting Ports

You can use 100-Gigabit Quad Small Form Factor Pluggable 28 (QSFP28) or 40-Gigabit QSFP+ transceivers for connections to other network devices using speeds of 100, 40, 25, or 10 Gigabits per second (you can use breakout cables for 25- and 10-Gigabit connections).

For information about the transceivers currently being used with the switch, use the show inventory all command.

Prevent damage to the fiber-optic cables that can separate from their cables. Keep the transceivers disconnected from their fiber-optic cables when installing the transceiver in the line card. Before removing such a transceiver from the switch, remove the cable from the transceiver.

To maximize the effectiveness and life of your transceivers and optical cables, do the following:

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Connecting the Switch to the Network

• Wear an ESD-preventative wrist strap that is connected to an earth ground whenever handling transceivers. The switch is typically grounded during installation and provides an ESD port to which you can connect your wrist strap.

• Do not remove and insert a transceiver more often than is necessary. Repeated removals and insertions can shorten its useful life.

• Keep the transceivers and fiber-optic cables clean and dust free to maintain high signal accuracy and to prevent damage to the connectors. Contamination causes increased attenuation (loss of light), and should be kept below 0.35 dB.

• Inspect routinely for dust and damage. If you suspect damage, clean and then inspect fiber ends under a microscope to determine if damage has occurred.

Guidelines for Connecting Ports

• Clean these parts before installation to prevent dust from scratching the fiber-optic cable ends.

• Clean the connectors regularly; the required frequency of cleaning depends upon the environment. In addition, clean connectors if they are exposed to dust or accidentally touched. Both wet and dry cleaning techniques can be effective; refer to your site's fiber-optic connection cleaning procedures.

• Do not touch the ends of connectors. Touching the ends can leave fingerprints and cause other contamination.

Warning

• To minimize the chance of damaging transceivers when installing them, slide them gently into their switch slots. Never force transceivers all the way into the slots. If the transceiver stops part way into the slot, it might be upside down. Remove the transceiver before turning it over and reinstalling it. If positioned correctly, the transceiver slides all the way into the slot and clicks when fully installed.

Statement 1051—Laser Radiation

Invisible laser radiation may be emitted from disconnected fibers or connectors. Do not stare into beams or view directly with optical instruments.

Statement 1053—Class 1M Laser Radiation

Class 1M laser radiation when open. Do not view directly with optical instruments.

Statement 1055—Class I and Class 1M Laser

Class I (CDRH) and Class 1M (IEC) laser products.

Warning

Statement 1056—Unterminated Fiber Cable

Invisible laser radiation may be emitted from the end of the unterminated fiber cable or connector. Do not view directly with optical instruments. Viewing the laser output with certain optical instruments (for example, eye loupes, magnifiers, and microscopes) within a distance of 100 mm may pose an eye hazard.

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Maintaining Transceivers and Optical Cables

Transceivers and fiber-optic cables must be kept clean and dust free to maintain high signal accuracy and prevent damage to the connectors. Contamination increases attenuation (loss of light) and should be below

0.35 dB.

Consider the following maintenance guidelines:

• Transceivers are static sensitive. To prevent ESD damage, wear an ESD-preventative wrist strap that is connected to the grounded chassis.

• Do not remove and insert a transceiver more often than is necessary. Repeated removals and insertions can shorten its useful life.

• Keep all optical connections covered when not in use. Clean them before using to prevent dust from scratching the fiber-optic cable ends.

• Do not touch the ends of connectors. Touching the ends can leave fingerprints and cause other contamination.

Connecting the Switch to the Network

• Clean the connectors regularly; the required frequency of cleaning depends upon the environment. In addition, clean connectors if they are exposed to dust or accidentally touched. Both wet and dry cleaning techniques can be effective; refer to the fiber-optic connection cleaning procedures for your site.

• Inspect routinely for dust and damage. If you suspect damage, clean and then inspect fiber ends under a microscope to determine if damage has occurred.

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CHAPTER 5

Replacing Modules

• Replacing a Fan Module During Operations, on page 33

• Replacing a Power Supply Module, on page 34

Replacing a Fan Module During Operations

All fan and power supply modules must have the same airflow direction or else an error can occur with the switch overheating and shutting down. You can determine the airflow direction of a fan module by the color of the stripe on the front of the module. If the fan module has a blue stripe for port-side exhaust airflow, the power supplies must have blue coloring for the same airflow direction. If the fan module has a burgundy stripe for port-side intake airflow, the power supplies must have burgundy coloring for the same airflow direction. To avoid over heating the switch, make sure that the fan modules are positioned in one of the following ways:

• For port-side exhaust airflow with blue coloring, position the fan modules in a cold aisle.

• For port-side intake airflow with burgundy coloring, position the ports in a cold aisle.

Before you begin

Before you can replace a fan module, ensure that both of the following conditions exist:

• The replacement fan module must have the same airflow direction as the other modules in the chassis.

If you must replace the fan module during operations and both of the above conditions are not met, leave the fan module that you need to replace in the chassis to preserve the designed airflow until you have the required module.

Step 1 Remove the fan module that you need to replace as follows:

a) Place the removed module on an antistatic surface or in an antistatic bag. If possible, repack the module in its packing

materials for safe shipping or storage.

Step 2 Follow these steps to replace the missing fan module within two minutes to avoid a shutdown.

a) Remove the replacement fan module from its packing materials and place it on an antistatic surface.

Hold the module by its handle and do not touch the electrical connectors on its backside. Also, to protect the electrical connectors, avoid letting them come in contact with anything other than the electrical connectors inside the chassis.

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Replacing a Power Supply Module

b) Position the fan module in front of the open fan slot (be sure that the backside of the module with the electrical

connectors is positioned to enter the slot first) and slide the module all the way into the chassis until its front side comes in contact with the chassis. For the last 0.2 inches (0.5 cm), carefully mount the module onto the chassis connectors by pushing more firmly, but do not force the module if it does not move further (excessive force can damage the connectors).

Replacing Modules

Note

c) Verify that the STS LED turns on and becomes green.

If the STS LED does not turn on, slide the module out of the chassis, and visually check the electrical connectors on the back side of the chassis for damage. If damaged, contact Cisco Technical Assistance for help. If undamaged, repeat the previous step to reinstall the module.

If you are not able to push the module all the way into the slot, carefully slide the module out of the slot and check its electrical connectors for damage. If damaged, contact Cisco Technical Assistance for help. If undamaged, repeat this step to reinstall the module.

Replacing a Power Supply Module

The switch requires two power supplies for redundancy. With one power supply providing the necessary power for operations, you can replace the other power supply during operations so long as the new power supply has the same airflow direction as the other modules in the chassis.

You can replace a power supply with another supported power supply that has the same power source type (AC, DC, HVAC, or HVDC) and the same wattage rating as the other installed power supply. Additionally, the airflow direction of the power supply must match or conform to the airflow direction of the installed fan modules. For the airflow direction used by the switch, see the coloring of the fan modules. The following list describes the power supplies supported by this switch.

• NXA-PAC-650W-PE (650-W, port-side exhaust (blue latch) power supply requiring an AC power source)

• NXA-PAC-650W-PI (650-W, port-side intake (burgundy latch) power supply requiring an AC power source)

• N9K-PUV-1200W (1200-W, dual-direction (white latch) high-voltage AC/DC power supply requiring a high-voltage AC or DC power source)

• UCS-PSU-6332-DC (930-W, port-side exhaust (blue latch) power supply requiring DC power source)

• UCSC-PSU-930WDC (930-W, port-side intake (burgundy latch) power supply requiring DC power source)

Removing an AC Power Supply

To remove an AC power supply, you must first disconnect the power cable and then remove the module from the chassis.

Before you begin

• To replace a power supply during operations, you must have a functioning power supply providing power to the switch while you replace the other power supply. If there is only one power supply installed in the

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Replacing Modules

Removing an HVAC/HVDC Power Supply

switch and you need to replace it, install the new power supply in the open slot and power it up before removing the original power supply.

• Ensure that the chassis is grounded. For grounding instructions, see Grounding the Chassis, on page 24.

Step 1 Pull the power cord out from the power receptacle on the power supply to be removed and verify that the LED turns

off.

Note

The LED might be on and amber colored to indicate that the input power has been disconnected.

If you need to remove an Anderson's Saf-D-Grid power cable connector from a high-voltage power supply, press the tab at the top of the connector and pull the connector out of the power supply.

Step 2 Remove the power supply from the chassis by pushing and holding its thumb latch to the left and pulling the power supply

part way out of the chassis.

Step 3 Place your other hand under the power supply to support it while you slide it out of the chassis.

Either place the power supply on an antistatic surface or pack it in its packing materials.

Step 4 If the power supply slot is to remain empty, install a blank power supply filler panel (part number N2200-P-BLNK).

What to do next

You are ready to install the replacement power supply.

Removing an HVAC/HVDC Power Supply

You can remove one power supply while the other one provides power to the switch.

To disconnect the power supply from its power cables, you must shut off the power from the power source and then either disconnect a connector for the power cables or release each of three cables from the power supply (requires a standard screw driver).

Step 1 Turn off the circuit breaker for the power feed to the power supply that you are replacing.

Be sure that the LEDs turn off on the power supply that you are removing.

Step 2 Remove the power cable from the power supply by pressing the tab on the top of the Anderson Power SAF-D-Grid

connector and pull the cable and connector out of the power supply.

Step 3 Grasp the power supply handle while pressing the release latch towards the power supply handle.

Step 4 Place your other hand under the power supply to support it while you slide it out of the chassis.

Caution

Do not touch the electrical connectors on the back side of the module and prevent anything else from coming into contact with and damaging the connectors.

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Removing a DC Power Supply

What to do next

You are ready to install an HVAC/HVDC power supply in the open slot.

Removing a DC Power Supply

You can remove one power supply while the other one provides power to the switch.

Step 1 Turn off the circuit breaker for the power feed to the power supply that you are replacing.

Be sure that the LEDs turn off on the power supply that you are removing.

Step 2 Remove the power cable from the power supply by doing the following:

• To remove an orange power cable connector from a 48-V DC power supply, do the following:

Replacing Modules

1. Push the orange plastic button on the top of the connector block inward toward the power supply.

2. Pull the connector block out of the power supply.

• To remove an Anderson Power Products Saf-D-Grid power cable connector from a high-voltage power supply, press on the tab at the top of the Saf-D-Grid connector and pull the connector out of the power supply.

Step 3 Grasp the power supply handle while pressing the release latch towards the power supply handle.

Step 4 Pull the power supply out of the bay.

What to do next

You are ready to install a DC power supply in the open slot.

Installing an AC Power Supply

You can replace one power supply while the other one provides power to the switch.

Before you begin

• The power supply that you are installing must be capable of using the same airflow direction as the fan trays installed in the same switch and it must use the same type of power source as the other power supply installed in the same switch (do not mix AC and DC power supplies in the same switch).

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Replacing Modules

Installing an HVAC/HVDC Power Supply

Note

DC power supplies with green coloring have the same port-side intake airflow direction as the power supplies with red coloring, and DC power supplies with gray coloring have the same port-side exhaust airflow direction as the power supplies with blue coloring. HVAC/HVDC power supplies automatically use the same airflow direction as the installed fan modules. If the power supply that you are replacing has a different color handle than the replacement power supply, verify that it has or will have the same airflow direction as the other modules in the switch.

• An AC power source must be within reach of the power cable that will be used with the replacement power supply. If you are using n+n power redundancy, there must be a separate power source for each power supply installed in the chassis. Otherwise, only one power source is required.

• There must be an earth ground connection to the chassis that you are installing the replacement module. Typically, the chassis is grounded by its metal-to-metal connection with a grounded rack. If you need to ground the chassis, see Grounding the Chassis, on page 24.

Step 1 Holding the replacement power supply with one hand underneath the module and the other hand holding the handle, turn

the power supply so that its release latch is on the right side and align the back end of the power supply (the end with the electrical connections) to the open power supply slot before carefully sliding the power supply all the way into the slot until it clicks into place.

Note

If the power supply does not fit into the open slot, turn the module over before sliding it carefully into the open slot.

Step 2 Test the installation by trying to pull the power supply out of the slot without using the release latch.

If the power supply does not move out of place, it is secured in the slot. If the power supply moves, carefully press it all the way into the slot until it clicks in place.

Step 3 Attach the power cable to the electrical outlet on the front of the power supply.

Step 4 Make sure that the other end of the power cable is attached to the appropriate power source for the power supply.

Note

Depending on the outlet receptacle on your power distribution unit, you might need the optional jumper cable to connect the switch to your outlet receptacle.

Step 5 Verify that the power supply is operational by making sure that the power supply LED is green. For information on

what the power supply LEDs indicate, see Power Supply LEDs, on page 54.

Installing an HVAC/HVDC Power Supply

You can replace one power supply while the other one provides power to the switch.

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Installing a DC Power Supply

Note

Before you begin

Replacing Modules

• If you are using DC power for the replacement power supply, the circuit breaker for the power feed to the power supply that you are replacing must be turned off.

• If you are using n+n power redundancy, there must be a separate power source for each power supply installed in the chassis (power sources must be of the same type—do not mix AC and DC power sources for the same switch). Otherwise, only one power source is required.

• There must be an earth ground connection to the chassis that you are installing the replacement module. Typically, the chassis is grounded by its metal-to-metal connection to a grounded rack. If you need to ground this chassis by another means, see Grounding the Chassis, on page 24.

Step 1 Holding the replacement power supply with one hand underneath the module and the other hand holding the handle, turn

Note

If the power supply does not fit into the open slot, turn the module over before sliding it into the open slot.

Step 2 Test the installation by trying to pull the power supply out of the slot without using the release latch.

If the power supply does not move out of place, it is secured in the slot. If the power supply moves, carefully press it all the way into the slot until it clicks in place.

Step 3 If the DC power cables and a grounding cable are already connected to an electrical connector block, insert the block

into the power receptacle on the power supply.

If the electrical cables have not been connected to the electrical connector block, wire them as described in Wiring a 48

V DC Electrical Connector Block, on page 39.

Step 4 Make sure that the other end of the power cable is connected to the appropriate power source for the power supply.

Step 5 If using a DC power source, turn on the circuit breaker for the DC power source connected to the power supply.

Step 6 Verify that the power supply is operational by making sure that the power supply LED is green. For information on

what the power supply LEDs indicate, see Power Supply LEDs, on page 54.

Installing a DC Power Supply

This topic is for installing the 48-V DC power supply into switch chassis. If you need to install a high voltage (HVAC/HVDC) power supply, see Installing an HVAC/HVDC Power Supply, on page 37.

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Replacing Modules

Wiring a 48 V DC Electrical Connector Block

You can replace one power supply while the other one provides power to the switch.

Before you begin

• The circuit breaker for the DC power source for the power supply must be turned off.

• The power supply that you are installing must be capable of using the same airflow direction as the fan trays installed in the same switch

• A DC power source must be within reach of the power cable that will be used with the replacement power supply. If you are using n+n power redundancy, there must be a separate power source for each power supply installed in the chassis (do not mix AC and DC power sources for the same switch). Otherwise, only one power source is required.

Step 1 Holding the replacement power supply with one hand underneath the module and the other hand holding the handle, turn

Note

If the power supply does not fit into the open slot, turn the module over before carefully sliding it into the open slot.

Step 2 If the DC power cables and a grounding cable are already connected to an electrical connector block, insert the block

into the power receptacle on the power supply.

If the electrical cables have not been connected to the electrical connector block, wire them as described in Wiring a 48

V DC Electrical Connector Block, on page 39.

Step 3 Turn on the circuit breaker for the DC power source connected to the power supply.

Step 4 Verify that the power supply is operational by making sure that the power supply LED is green. For information on

what the power supply LEDs indicate, see Power Supply LEDs, on page 54.

Wiring a 48 V DC Electrical Connector Block

You must connect the ground, negative, and positive DC power cables to a connector block in order to connect the power cables to a 48 V DC power supply.

Note

The recommended wire gauge is 8 AWG. The minimum wire gauge is 10 AWG.

Warning

Statement 342—Before Connecting to System Power Supply

High leakage currentearth connection essential before connecting to system power supply.

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Wiring a 48 V DC Electrical Connector Block

Replacing Modules

Warning

Statement 1024—Ground Conductor

Before you begin

You must turn off the circuit breaker for the DC power cables that you are connecting to prevent electrocution.

Step 1 Verify that the circuit breaker for the power feed to the replacement power supply is turned off.

Step 2 Remove the DC power connector block from the power supply by doing the following:

a) Push the orange plastic button on the top of the connector block inward toward the power supply. b) Pull the connector block out of the power supply.

Step 3 Strip 0.6 inches (15 mm) of insulation off the DC wires that you are using.

Step 4 Orient the connector as shown in the following figure with the orange plastic button on top.

-48V (-DC) cable4Wire retainer lever1

Grounding cable (8 AWG recommended)5Orange plastic button on top of the connector2

-48V Return (+DC) cable3

Step 5 Use a small screwdriver to depress the spring-loaded wire retainer lever on the lower spring-cage wire connector. Insert

your green (ground) wire into the aperture and then release the lever.

Step 6 Use a small screwdriver to depress the spring-loaded wire retainer lever on the middle spring-cage wire connector. Insert

your black (DC negative) wire into the aperture and then release the lever.

Step 7 Use a small screwdriver to depress the spring-loaded wire retainer lever on the upper spring-cage wire connector. Insert

your red (DC positive) wire into the aperture and then release the lever.

Step 8 Insert the connector block back into the power supply. Make sure that your red (DC positive) wire aligns with the power

supply label, "+ DC".

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Replacing Modules

Wiring a 48 V DC Electrical Connector Block

Step 9 Verify that the other ends of the cables are attached to the DC power source and ground. You are then ready to turn on

the DC power source.

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Wiring a 48 V DC Electrical Connector Block

Replacing Modules

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Rack Specifications

• Overview of Racks, on page 43

• General Requirements for Cabinets and Racks, on page 43

• Requirements Specific to Standard Open Racks, on page 44

• Requirements Specific to Perforated Cabinets, on page 44

• Cable Management Guidelines, on page 44

Overview of Racks

You can install the switch in the following types of cabinets and racks, assuming an external ambient air temperature range of 0 to 104°F (0 to 40°C):

• Standard perforated cabinets

• Solid-walled cabinets with a roof fan tray (bottom to top cooling)

• Standard open racks

APPENDIX A

Note

If you are selecting an enclosed cabinet, we recommend one of the thermally validated types, either standard perforated or solid-walled with a fan tray.

Note

We do not recommend that you use racks that have obstructions (such as power strips), because the obstructions could impair access to field-replaceable units (FRUs).

General Requirements for Cabinets and Racks

The cabinet or rack must also meet the following requirements:

• Standard 19-inch (48.3 cm) (two- or four-post EIA cabinet or rack, with mounting rails that conform to English universal hole spacing per section 1 of ANSI/EIA-310-D-1992). For more information, see

Requirements Specific to Perforated Cabinets, on page 44.

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Requirements Specific to Standard Open Racks

• The minimum vertical rack space requirement per chassis is:

• For a one RU (rack unit) switch, 1.75 inches (4.4 cm)

• For a one and a half RU (rack unit) switch, 2.63 (6.68 cm)

• For a two RU (rack unit) switch, 3.5 inches (8.8 cm)

• For a three RU (rack unit) switch, 5.25 inches (13.3 cm)

• The width between the rack-mounting rails must be at least 17.75 inches (45.0 cm) if the rear of the device is not attached to the rack. For four-post EIA racks, this measurement is the distance between the two front rails.

Four-post EIA cabinets (perforated or solid-walled) must meet the following requirements:

• The minimum spacing for the bend radius for fiber-optic cables should have the front-mounting rails of the cabinet offset from the front door by a minimum of 3 inches (7.6 cm).

• The distance between the outside face of the front mounting rail and the outside face of the back mounting rail should be 23.0 to 30.0 inches (58.4 to 76.2 cm) to allow for rear-bracket installation.

Rack Specifications

Requirements Specific to Standard Open Racks

If you are mounting the chassis in an open rack (no side panels or doors), ensure that the rack meets the following requirements:

• The minimum vertical rack space per chassis must be one rack unit (RU), equal to 1.75 inches (4.4 cm) two rack units (RUs), equal to 3.5 inches (8.8 cm).

• The distance between the chassis air vents and any walls should be 2.5 inches (6.4 cm).

Requirements Specific to Perforated Cabinets

A perforated cabinet has perforations in its front and rear doors and side walls. Perforated cabinets must meet the following requirements:

• The front and rear doors must have at least a 60 percent open area perforation pattern, with at least 15 square inches (96.8 square cm) of open area per rack unit of door height.

• The roof should be perforated with at least a 20 percent open area.

• The cabinet floor should be open or perforated to enhance cooling.

The Cisco R Series rack conforms to these requirements.

Cable Management Guidelines

To help with cable management, you might want to allow additional space in the rack above and below the chassis to make it easier to route all of the fiber optic or copper cables through the rack.

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System Specifications

• Environmental Specifications, on page 45

• Switch Dimensions, on page 45

• Switch and Module Weights and Quantities, on page 46

• Transceiver and Cable Specifications, on page 46

• Switch Power Input Requirements, on page 46

• Power Specifications, on page 47

• Power Cable Specifications, on page 49

• Regulatory Standards Compliance Specifications, on page 51

Environmental Specifications

APPENDIX B

SpecificationEnvironment

32 to 104°F (0 to 40°C)Ambient operating temperatureTemperature

–40 to 158°F (–40 to 70°C)Ambient nonoperating

Relative humidity

Operating

Nonoperating

Switch Dimensions

8 to 80% with humidity gradation of 10% per hour

5 to 95%

0 to 13,123 feet (0 to 4,000 meters)OperatingAltitude

HeightDepthWidthSwitch

1.72 inches (4.4 cm) (1 RU)22.5 inches (57.1 cm)17.3 inches (43.9 cm)Cisco Nexus 9236C

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Switch and Module Weights and Quantities

System Specifications

QuantityWeight per UnitComponent

118.2 lb (8.3 kg)Cisco Nexus 9236C Chassis (N9K-C9236C)

Fan Module

– Port-side exhaust (blue) (NXA-FAN-30CFM-F)

– Port-side intake (burgundy) (NXA-FAN-30CFM-B)

Power Supplies

– 650-W AC port-side exhaust (blue) (NXA-PAC-650W-PE)

– 650-W AC port-side intake (burgundy) (NXA-PAC-650W-PI)

– 1200-W HVAC/HVDC dual-direction (white) (N9K-PUV-1200W)

– 930-W DC port-side exhaust (gray) (UCS-PSU-6332-DC)

– 930-W DC port-side intake (green) (UCSC-PSU-930WDC)

Transceiver and Cable Specifications

To determine which transceivers, adapters, and cables are supported by this switch, see https://www.cisco.com/

c/en/us/support/interfaces-modules/transceiver-modules/products-device-support-tables-list.html.

To see the transceiver specifications and installation information, see https://www.cisco.com/c/en/us/support/

interfaces-modules/transceiver-modules/products-device-support-tables-list.html.

0.92 lb (0.4 kg)

—

2.42 lb (1.1 kg)

4—

2 (1 for operations and 1 for redundancy)

Switch Power Input Requirements

The following table lists the typical amount of power that the switch consumes. It also lists the maximum amount of power that you must provision for the switch and power supply for peak conditions.

Note

Some power supplies have UL listed capabilities that are greater than the maximum power requirements for a switch. To determine the power consumption characteristics for the switch, use the typical and maximum requirements that are listed in the following table.

Switch

Cisco Nexus 9236C NX-OS Mode Switch Hardware Installation Guide

Typical Power Consumption (AC or DC)

Maximum Power Consumption (AC or DC)

Heat Dissipation Requirement

2183.77 BTUs per hour640 W275 WCisco Nexus 9236C

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System Specifications

Power Specifications

Power specifications include the specifications for each type of power supply module.

650-W AC Power Supply Specifications

These specifications apply to the following power supplies:

• NXA-PAC-650W-PE

• NXA-PAC-650W-PI

Power Specifications

SpecificationCharacteristic

AC input voltage

Maximum AC input current

Efficiency rating

Nominal range: 100 and 240 VAC (Range: 90-132 VAC, 180-264 VAC)

Nominal range: 50 to 60 Hz (Range: 47-63 Hz)AC input frequency

7.6 A at 100 VAC

3.65 A at 208 VAC

760 A at 100 VACMaximum input volt-amperes

650 WMaximum output power per power supply

33 A (sub-cycle duration)Maximum inrush current

12 ms at 650 WMaximum hold-up time

12 VDCPower supply output voltage

12 VDCPower supply standby voltage

Climate Savers Platinum Efficiency (80Plus Platinum certified)

RSP1Form factor

1200-W HVAC/HVDC Power Supply Specifications

These specifications apply to the 1200-W HVAC/HVDC (N9K-PUV-1200W) power supplies.

SpecificationCharacteristic

Input voltage

• AC (for 1230 W output)

• DC (for 1230 W output)

Cisco Nexus 9236C NX-OS Mode Switch Hardware Installation Guide

Nominal (Range)

• 200 to 277 VAC

• –240 to –380 VDC

Nominal: 50 to 60 Hz (Range: 47-63 Hz)AC input frequency

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930-W DC Power Supply (Port-Side Intake) Specifications

System Specifications

SpecificationCharacteristic

35 A (cold turn on); 70 A (hot turn on)Maximum inrush current

Maximum output Watts

• For 200 to 277 VAC

• For 192 to 400 VDC

Power supply output voltage

• For 200 to 277 VAC

• For 192 to 400 VDC

Efficiency rating

Per power supply

• 1230 W

Per power supply

• 12 VAC at 100 A

• 12 VDC at 100 A

12 V at 2.5 APower supply standby voltage

Climate Savers Platinum Efficiency (80Plus Platinum certified)

RSP1Form factor

930-W DC Power Supply (Port-Side Intake) Specifications

These specifications apply to the 930-W DC (UCSC-PSU-930WDC) port-side intake power supplies.

SpecificationCharacteristic

DC input voltage range

Nominal range: -48 to -60 VDC nominal (Range: -40 to -60 VDC)

23 A at -48 VDCMaximum DC input current

1104 WMaximum input W

930 WMaximum output power per power supply

35 A (sub-cycle duration)Maximum inrush current

8 ms at 930 WMaximum hold-up time

12 VDCPower supply output voltage

12 VDCPower supply standby voltage

Greater than 92% at 50% loadEfficiency rating

RSP1Form factor

930-W DC Power Supply (Port-Side Exhaust) Specifications

These specifications apply to the 930-W DC (UCS-PSU-6332-DC) power supplies.

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System Specifications

Power Cable Specifications

SpecificationCharacteristic

23 A at -48 VDCMaximum DC input current

1104 WMaximum input W

930 WMaximum output power per power supply

35 A at +35° CelciusMaximum inrush current

8 ms at 50 % loadMaximum hold-up time

12 VDCPower supply output voltage

12 VDCPower supply standby voltage

Efficiency rating

Climate Savers Platinum Efficiency (80Plus Platinum certified)

1UForm factor

Power Cable Specifications

The following sections specify the power cables that you order and use with AC, HVAC/HVDC, and DC power supplies.

AC Power Cables Supported by NX-OS Mode Switches

CAB-C13-C14-2M

CAB-C13-C14-AC

CAB-C13-CBN

Cord Set DescriptionPower Cord Part NumberPower Type

Power Cord Jumper, C13-C14 Connectors, 6.6 feet (2.0 m)

Power cord, C13 to C14 (recessed receptacle), 10 A, 9.8 feet (3 m)

Cabinet jumper power cord, 250 VAC, 10 A, C14-C13 connectors,

2.3 feet (0.7 m)

250 V, 10 A, 8.2 feet (2.5 m)CAB-250V-10A-ARArgentina

CAB-9K10A-AUAustralia

CAB-9K10A-EUEuropean Union

Cisco Nexus 9236C NX-OS Mode Switch Hardware Installation Guide

250 VAC, 10 A, 3112 plug, 8.2 feet (2.5 m)

250 V, 10 A, 6.9 feet (2.1 m)CAB-250V-10A-BRBrazil

250 VAC, 10 A, CEE 7/7 plug, 8.2 feet (2.5 m)

10 A, 8.2 feet (2.5 m)CAB-IND-10AIndia

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HVAC/HVDC Power Cables Supported by ACI-Mode and NX-OS Mode Switches

System Specifications

Cord Set DescriptionPower Cord Part NumberPower Type

250 V, 10 A, 8.2 feet (2.5 m)CAB-250V-10A-ISIsrael

CAB-9K10A-ITItaly

250 VAC, 10 A, CEI 23-16/VII plug, 8.2 feet (2.5 m)

CAB-9K12A-NANorth America

125 VAC, 13 A, NEMA 5-15 plug,

8.2 feet (2.5 m)

NEMA L6-20-C13, 6.6 feet (2.0 m)CAB-AC-L620-C13North America

200/240V, 6A, 8.2 feet (2.5 m)CAB-N5K6A-NANorth America

250 V, 10 A, 8.2 feet (2.5 m)CAB-250V-10A-CNPeoples Republic of China

250 V, 10 A, 8.2 feet (2.5 m)CAB-250V-10A-IDSouth Africa

CAB-9K10A-SWSwitzerland

250 VAC, 10 A, MP232 plug, 8.2 feet (2.5 m)

CAB-9K10A-UKUnited Kingdom

250 VAC, 10 A, BS1363 plug (13 A fuse), 8.2 (2.5 m)

NO-POWER-CORDAll except Argentina, Brazil, and

Japan

No power cord included with switch

HVAC/HVDCPowerCablesSupported byACI-Mode andNX-OSMode Switches

Japan

Cord Set DescriptionPower Cord Part NumberPower Type

CAB-HVAC-SD-0.6MHVAC

2-foot (0.6 m) cable with Saf-D-Grid and SD connectors

CAB-HVAC-C14-2MHVAC

6.6-foot (2.0 m) cable with Saf-D-Grid and C14 connector (use for up to 240 V)

CAB-HVAC-RT-0.6MHVAC

2-foot (0.6 m) cable with Saf-D-Grid and RT connector

CAB-HVDC-3T-2MHVDC

6.6-foot (2.0 m) cable with Saf-D-Grid and three terminal connectors

NO-POWER-CORDAll except Argentina, Brazil, and

No power cord included with switch

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System Specifications

DC Power Cable Specifications

Cord Set DescriptionPower CordPower Supply

(customer supplied)UCSC-PSU-930WDC (port-side

intake airflow)

CAB-48DC-40A-8AWGUCS-PSU-6332-DC (port-side

exhaust airflow)

NO-POWER-CORDAll except Argentina, Brazil, and

Japan

8 AWG insulated cable (10 AWG minimum) for each power supply

8-AWG cable with 3-pin keyed power supply connector and three wires (power source connection)

No power cord included with switch

Regulatory Standards Compliance Specifications

The following table lists the regulatory standards compliance for the switch.

Table 1: Regulatory Standards Compliance: Safety and EMC

DescriptionSpecification

Regulatory compliance

Safety

Products should comply with CE Markings according to directives 2004/108/EC and 2006/95/EC.

• UL 60950-1 Second Edition

• CAN/CSA-C22.2 No. 60950-1 Second Edition

• EN 60950-1 Second Edition

• IEC 60950-1 Second Edition

• AS/NZS 60950-1

• GB4943

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System Specifications

DescriptionSpecification

EMC: Emissions

EMC: Immunity

RoHS

• 47CFR Part 15 (CFR 47) Class A

• AS/NZS CISPR22 Class A

• CISPR22 Class A

• EN55022 Class A

• ICES003 Class A

• VCCI Class A

• EN61000-3-2

• EN61000-3-3

• KN22 Class A

• CNS13438 Class A

• EN55024

• CISPR24

• EN300386

• KN 61000-4 series

The product is RoH-6 compliant with exceptions for leaded-ball grid-array (BGA) balls and lead press-fit connectors.

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LEDs

• Switch Chassis LEDs, on page 53

• Lane Link LEDs, on page 54

• Fan Module LEDs, on page 54

• Power Supply LEDs, on page 54

Switch Chassis LEDs

The BCN, STS, and ENV, LEDs are located on the left side of the front of the switch. The port LEDs appear as triangles pointing up or down to the nearest port.

APPENDIX C

StatusColorLED

Flashing blueBCN

GreenSTS

Amber

Red

GreenENV

Amber

The operator has activated this LED to identify this switch in the chassis.

This switch is not being identified.Off

The switch is operational.

The switch is booting up.Flashing amber

Temperature exceeds the minor

alarm threshold.

Temperature exceeds the minor

alarm threshold.

The switch is not receiving power.Off

Fans and power supply modules are operational.

At least one fan or power supply module is not operating.

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Lane Link LEDs

LEDs

StatusColorLED

Lane Link LEDs

The Lane Link LEDs indicate which of the break out lanes are being checked. If none of the Lane Link LEDs is lit, all four lanes are being checked.

Green(port)

Amber

Off

Port admin state is 'Enabled', SFP is present and the interface is connected (that is, cabled, and the link is up).

Port admin state is 'Disabled, or the SFP is absent, or both.

Port admin state is 'Enabled' and SFP is present, but interface is not connected.

DescriptionLED Lit

Checking lane 1.1

Checking lane 2.2

Checking lane 3.3

Fan Module LEDs

The fan module LED is located below the air holes on the front of the module.

Power Supply LEDs

The power supply LEDs are located on the left front portion of the power supply. Combinations of states

indicated by the Okay ( ) and Fault ( ) LEDs indicate the status for the module as shown in the following table.

Checking lane 4.4

Checking all four lanesNone

StatusColorLED

The fan module is operational.GreenSTS

The fan module is not operational (fan is probably not functional).Red

Fan module is not receiving power.Off

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LEDs

green

LED

Status

Power supply is on and outputting power to the switch.OffGreen

OffFlashing

Power supply is connected to a power source but not outputting power to the switch—power supply might not be installed in the chassis.

Power supply is not receiving power.OffOff

Flashing amberGreen

Power supply warning—possibly one of the following conditions:

• High voltage

• High power

• Low voltage

• Power supply installed in chassis but not connected to a power source

• Slow power supply fan

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LEDs

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Additional Kits

• Rack Mount Kit NXK-ACC-KIT-1RU, on page 57

• Rack Mount Kit N3K-C3064-ACC-KIT, on page 57

Rack Mount Kit NXK-ACC-KIT-1RU

The following table lists and illustrates the contents for the 1-RU rack-mount kit (NXK-ACC-KIT-1RU).

• Front brackets (2)

• Rear brackets (2)

• Slider rails (2)

• M4 Phillips pan-head screws (6)

APPENDIX D

QuantityDescriptionIllustration

1Rack-mount kit

Rack Mount Kit N3K-C3064-ACC-KIT

The following table lists and illustrates the contents for the 1-RU rack-mount kit (N3K-C3064-ACC-KIT).

• Front-mount angled bracket (2)

• Rear-mount slider bracket (2)

• Slider rails (2)

• M4 x 7 mm mounting screws (16)

Cisco Nexus 9236C NX-OS Mode Switch Hardware Installation Guide

QuantityDescriptionIllustration

1Rack-mount kit

Page 68

Rack Mount Kit N3K-C3064-ACC-KIT

Additional Kits

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Site Preparation and Maintenance Records

• Site Preparation Checklist, on page 59

• Contact and Site Information, on page 60

• Chassis and Module Information, on page 61

Site Preparation Checklist

Planning the location and layout of your equipment rack or cabinet is essential for successful switch operation, ventilation, and accessibility.

The following table lists the site planning tasks that we recommend that you complete before you install the switch. Your completion of each task ensures a successful switch installation.

Space evaluation:

Space and layout

APPENDIX E

Verification Time and DatePlanning Activity

Floor covering

Impact and vibration

Lighting

Physical access

Maintenance access

Environmental evaluation:

Ambient temperature

Humidity

Altitude

Atmospheric contamination

Airflow

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Contact and Site Information

Power evaluation:

Site Preparation and Maintenance Records

Verification Time and DatePlanning Activity

Input power type

Power receptacles

Receptacle proximity to the equipment

Dedicated (separate) circuits for power redundancy

UPS for power failures

Grounding: proper wire gauge and lugs

Circuit breaker size

Grounding evaluation:

Data center ground

Cable and interface equipment evaluation:

Cable type

Connector type

Cable distance limitations

Interface equipment (transceivers)

EMI evaluation:

Distance limitations for signaling

Site wiring

RFI levels

Contact and Site Information

Use the following worksheet to record contact and site information for the installation.

Contact person

Contact phone

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Site Preparation and Maintenance Records

Contact e-mail

Building/site name

Data center location

Floor location

Address (line 1)

Address (line 2)

City

State/Provence

Contact person

ZIP/postal code

Country

Chassis and Module Information

Use the following worksheet to record information about the switch.

Contract number

Chassis serial number

Product number

Use the following worksheet to record network-related information.

Switch IP address

Switch IP netmask

Hostname

Domain name

IP broadcast address

Gateway/router address

DNS address

Use the following worksheet to record information about the modules in the switch.

Fan module 1

NotesModule Serial NumberModule TypeModule Slot

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Site Preparation and Maintenance Records

Fan module 2

Fan module 3

Fan module 4

Power Supply 1

Power Supply 2

Site Preparation and Maintenance Records

NotesModule Serial NumberModule TypeModule Slot

Cisco Nexus 9236C NX-OS Mode Switch Hardware Installation Guide

Cisco Nexus 9236C, Nexus 92160YC-X Hardware Installation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Cisco Nexus 9236C NX-OS Mode Switch Hardware Installation Guide

CONTENTS

Preface

Audience

Documentation Conventions

Related Documentation for Cisco Nexus 9000 Series NX-OS Software

Documentation Feedback

Obtaining Documentation and Submitting a Service Request

Overview

Overview

Preparing the Site

Temperature Requirements

Humidity Requirements

Altitude Requirements

Dust and Particulate Requirements

Minimizing Electromagnetic and Radio Frequency Interference

Shock and Vibration Requirements

Grounding Requirements

Planning for Power Requirements

Airflow Requirements

Rack and Cabinet Requirements

Clearance Requirements

Safety

Installing the Switch Chassis

Installation Options with Rack-Mount Kits, Racks, and Cabinets

Airflow Considerations

Installation Guidelines

Unpacking and Inspecting the Switch

Installing the Switch using the NXK-ACC-KIT-1RU Rack-mount Kit

Installing the Switch using the N3K-C3064-ACC-KIT Rack-mount Kit

Grounding the Chassis

Starting the Switch

Connecting the Switch to the Network

Setting Up the Management Interface

Connecting to Host Servers

Guidelines for Connecting Ports

Maintaining Transceivers and Optical Cables

Replacing Modules

Replacing a Fan Module During Operations

Replacing a Power Supply Module

Removing an AC Power Supply

Removing an HVAC/HVDC Power Supply

Removing a DC Power Supply

Installing an AC Power Supply

Installing an HVAC/HVDC Power Supply

Installing a DC Power Supply

Wiring a 48 V DC Electrical Connector Block

Rack Specifications

Overview of Racks

General Requirements for Cabinets and Racks

Requirements Specific to Standard Open Racks

Requirements Specific to Perforated Cabinets

Cable Management Guidelines

System Specifications

Environmental Specifications

Switch Dimensions

Switch and Module Weights and Quantities

Transceiver and Cable Specifications

Switch Power Input Requirements

Power Specifications

650-W AC Power Supply Specifications

1200-W HVAC/HVDC Power Supply Specifications

930-W DC Power Supply (Port-Side Intake) Specifications

930-W DC Power Supply (Port-Side Exhaust) Specifications

Power Cable Specifications

AC Power Cables Supported by NX-OS Mode Switches

HVAC/HVDC Power Cables Supported by ACI-Mode and NX-OS Mode Switches

DC Power Cable Specifications

Regulatory Standards Compliance Specifications

LEDs

Switch Chassis LEDs

Lane Link LEDs

Fan Module LEDs

Power Supply LEDs

Additional Kits

Rack Mount Kit NXK-ACC-KIT-1RU