Cisco Nexus 9372PX and 9372PX-E ACI-Mode Switch Hardware
Installation Guide
First Published: 2015-02-12
Last Modified: 2017-11-13
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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.
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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 frequencyenergyand,ifnotinstalledandusedinaccordancewiththeinstructions,maycauseharmfulinterferencetoradiocommunications. However,thereisnoguaranteethatinterference 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:
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•
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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.
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AnyInternetProtocol(IP)addressesandphonenumbersusedinthisdocumentarenotintendedtobeactualaddressesandphonenumbers. Anyexamples,commanddisplayoutput,network topologydiagrams,andotherfiguresincludedinthedocumentareshownforillustrativepurposesonly. AnyuseofactualIPaddressesorphonenumbersinillustrativecontentisunintentional and coincidental.
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© 2015-2017 Cisco Systems, Inc. All rights reserved.
C O N T E N T S
P r e f a c e |
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Preface vii |
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Audience vii |
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Documentation Conventions vii |
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Related Documentation viii |
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Documentation Feedback |
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Obtaining Documentation and Submitting a Service Request x |
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Overview 1 |
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C H A P T E R |
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Overview 1 |
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Preparing the Site 5 |
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C H A P T E R |
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Temperature Requirements 5 |
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Humidity Requirements |
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Altitude Requirements 6 |
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Dust and Particulate Requirements |
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Minimizing Electromagnetic and Radio Frequency Interference 6 |
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Shock and Vibration Requirements |
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Grounding Requirements |
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Planning for Power Requirements |
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Airflow Requirements 8 |
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Rack and Cabinet Requirements 9 |
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Clearance Requirements |
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Installing the Switch Chassis |
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C H A P T E R |
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Safety 11 |
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Installation Options with Racks and Cabinets 12
Airflow Considerations 12
Cisco Nexus 9372PX and 9372PX-E ACI-Mode Switch Hardware Installation Guide
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Contents
Installation Guidelines 12
Unpacking and Inspecting the Switch 13
Installing the Switch 14
Grounding the Chassis 19
Starting the Switch 21
C H A P T E R 4
C H A P T E R 5
A P P E N D I X A
A P P E N D I X B
Connecting the Switch to the ACI Fabric 23
ACI Fabric Topology 23
Preparing to Connect to Other Devices 24
Connecting Leaf Switches to APICs 25
Connecting Leaf Switches to Spine Switches 26
Setting Up an Optional Console Interface 29
Setting Up an Optional Management Connection 30
Maintaining Transceivers and Optical Cables 30
Replacing Components 31
Replacing a Fan Module 31
Removing a Fan Module 32
Installing a Fan Module 32
Replacing a Power Supply Module 32
Replacing an AC Power Supply 33
Replacing a DC Power Supply 34
Rack Specifications 37
Overview of Racks 37
General Requirements for Cabinets and Racks 37
Requirements Specific to Standard Open Racks 38
Requirements Specific to Perforated Cabinets 38
Cable Management Guidelines 38
System Specifications 39
Environmental Specifications 39
Switch Dimensions 40
Switch and Module Weights and Quantities 40
Transceiver and Cable Specifications 40
Cisco Nexus 9372PX and 9372PX-E ACI-Mode Switch Hardware Installation Guide
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Contents
A P P E N D I X C
A P P E N D I X D
A P P E N D I X E
Switch Power Input Requirements 40
Power Specifications 41
650-W AC Power Supply Specifications 41
930-W DC Power Supply (Port-Side Intake) Specifications 42
930-W DC Power Supply (Port-Side Exhaust) Specifications 42
Power Cable Specifications 43
Power Cable Specifications for AC Power Supplies 43
DC Power Cable Specifications 44
Regulatory Standards Compliance Specifications 44
LEDs 47
Switch Chassis LEDs 47
Fan Module LEDs 48
Power Supply LEDs 48
Additional Kits 49
Accessory Kit 49
Site Preparation and Maintenance Records 51
Site Preparation Checklist 51
Contact and Site Information 53
Chassis and Module Information 53
Cisco Nexus 9372PX and 9372PX-E ACI-Mode Switch Hardware Installation Guide
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Contents
Cisco Nexus 9372PX and 9372PX-E ACI-Mode Switch Hardware Installation Guide
vi
• Audience, page vii
• Documentation Conventions, page vii
• Related Documentation, page viii
• Documentation Feedback, page x
• Obtaining Documentation and Submitting a Service Request, page x
This publication is for hardware installers and network administrators who install, configure, and maintain Cisco Nexus switches.
Command descriptions use the following conventions:
Convention |
Description |
bold |
Bold text indicates the commands and keywords that you enter literally |
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as shown. |
Italic |
Italic text indicates arguments for which the user supplies the values. |
[x] |
Square brackets enclose an optional element (keyword or argument). |
[x | y] |
Squarebracketsenclosingkeywordsorargumentsseparatedbyavertical |
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bar indicate an optional choice. |
{x | y} |
Braces enclosing keywords or arguments separated by a vertical bar |
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indicate a required choice. |
Cisco Nexus 9372PX and 9372PX-E ACI-Mode Switch Hardware Installation Guide
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Preface
Convention |
Description |
[x {y | z}] |
Nested set of square brackets or braces indicate optional or required |
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choices within optional or required elements. Braces and a vertical bar |
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within square brackets indicate a required choice within an optional |
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element. |
variable |
Indicatesavariableforwhichyousupplyvalues,incontextwhereitalics |
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cannot be used. |
string |
A nonquoted set of characters. Do not use quotation marks around the |
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string or the string will include the quotation marks. |
Examples use the following conventions: |
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Convention |
Description |
screen font |
Terminalsessionsandinformationtheswitchdisplaysareinscreenfont. |
boldface screen font |
Information you must enter is in boldface screen font. |
italic screen font |
Arguments for which you supply values are in italic screen font. |
< > |
Nonprinting characters, such as passwords, are in angle brackets. |
[ ] |
Default responses to system prompts are in square brackets. |
!, # |
An exclamation point (!) or a pound sign (#) at the beginning of a line |
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of code indicates a comment line. |
Related Documentation
TheApplicationCentricInfrastructuredocumentationsetincludesthefollowingdocumentsthatareavailable on Cisco.com at the following URL: https://www.cisco.com/c/en/us/support/cloud-systems-management/ application-policy-infrastructure-controller-apic/tsd-products-support-series-home.html.
Web-Based Documentation
•Cisco APIC Management Information Mode Reference
•Cisco APIC Online Help Reference
•Cisco APIC Python SDK Reference
•Cisco ACI Compatibility Tool
•Cisco ACI MIB Support List
Cisco Nexus 9372PX and 9372PX-E ACI-Mode Switch Hardware Installation Guide
viii
Preface
Related Documentation
Downloadable Documentation
•Knowledge Base Articles (KB Articles)are available at the following URL: https://www.cisco.com/c/ en/us/support/cloud-systems-management/application-policy-infrastructure-controller-apic/ products-configuration-examples-list.html
•Cisco Application Centric Infrastructure Controller Release Notes
•Cisco Application Centric Infrastructure Fundamentals Guide
•Cisco APIC Getting Started Guide
•Cisco ACI Virtualization Guide
•Cisco APIC REST API User Guide
•Cisco APIC Command Line Interface User Guide
•Cisco APIC Faults, Events, and System Messages Management Guide
•Cisco ACI System Messages Reference Guide
•Cisco APIC Layer 4 to Layer 7 Services Deployment Guide
•Cisco APIC Layer 4 to Layer 7 Device Package Development Guide
•Cisco APIC Layer 4 to Layer 7 Device Package Test Guide
•Cisco ACI Firmware Management Guide
•Cisco ACI Troubleshooting Guide
•Cisco ACI Switch Command Reference, NX-OS Release 11.0
•Cisco Verified Scalability Guide for Cisco ACI
•Cisco ACI MIB Quick Reference
•Cisco Nexus CLI to Cisco APIC Mapping Guide
•Application Centric Inftrastructure Fabric Hardware Installation Guide
•Cisco NX-OS Release Notes for Cisco Nexus 9000 Series ACI-Mode Switches
•Cisco Nexus 9000 Series ACI Mode Licensing Guide
•Cisco Nexus 93108TX-EX ACI-Mode Switch Hardware Installation Guide
•Cisco Nexus 93108TX-FX ACI-Mode Switch Hardware Installation Guide
•Cisco Nexus 93120TX ACI-Mode Switch Hardware Installation Guide
•Cisco Nexus 93128TX ACI-Mode Switch Hardware Installation Guide
•Cisco Nexus 93180LC-EX ACI-Mode Switch Hardware Installation Guide
•Cisco Nexus 93180YC-EX ACI-Mode Switch Hardware Installation Guide
•Cisco Nexus 93180YC-FX ACI-Mode Switch Hardware Installation Guide
•Cisco Nexus 9332PQ ACI-Mode Switch Hardware Installation Guide
•Cisco Nexus 9336PQ ACI-Mode Switch Hardware Installation Guide
•Cisco Nexus 9372PX and 9372PX-E ACI-Mode Switches Hardware Installation Guide
Cisco Nexus 9372PX and 9372PX-E ACI-Mode Switch Hardware Installation Guide
ix
Preface
•Cisco Nexus 9372TX and 9372TX-E ACI-Mode Switches Hardware Installation Guide
•Cisco Nexus 9396PX ACI-Mode Switch Hardware Installation Guide
•Cisco Nexus 9396TX ACI-Mode Switch Hardware Installation Guide
•Cisco Nexus 9504 ACI-Mode Switch Hardware Installation Guide
•Cisco Nexus 9508 ACI-Mode Switch Hardware Installation Guide
•Cisco Nexus 9516 ACI-Mode Switch Hardware Installation Guide
Cisco Application Centric Infrastructure (ACI) Simulator Documentation
The following Cisco ACI Simulator documentation is available at https://www.cisco.com/c/en/us/support/ cloud-systems-management/application-centric-infrastructure-simulator/tsd-products-support-series-home.html.
•Cisco ACI Simulator Release Notes
•Cisco ACI Simulator Installation Guide
•Cisco ACI Simulator Getting Started Guide
Cisco Nexus 9000 Series Switches Documentation
TheCiscoNexus9000SeriesSwitchesdocumentationisavailableat https://www.cisco.com/c/en/us/support/ switches/nexus-9000-series-switches/tsd-products-support-series-home.html.
Cisco Application Virtual Switch Documentation
The Cisco Application Virtual Switch (AVS) documentation is available at https://www.cisco.com/c/en/us/ support/switches/application-virtual-switch/tsd-products-support-series-home.html.
Documentation Feedback
Toprovidetechnicalfeedbackonthisdocument,ortoreportanerrororomission,pleasesendyourcomments to apic-docfeedback@cisco.com. We appreciate your feedback.
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.
Cisco Nexus 9372PX and 9372PX-E ACI-Mode Switch Hardware Installation Guide
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C H A P T E R 1
• Overview, page 1
The Cisco Nexus 9372PX and 9372PX-E switches (N9K-C9372PX and N9K-C9372PX-E) are 1-rack unit (RU) switches that support 48 10-Gigabit SFP+ APIC-facing ports (supporting 1- and 10-Gigabit Ethernet) and six 40-Gigabit QSFP+ spine-facing ports (supporting 10and 40-Gigabit Ethernet). These switches also havea100/1000networkmanagementport,anRS-232consoleportforsettingtheinitialswitchconfiguration, andtwoUSBportsforsavingorloadingswitchconfigurations. Thechassisforeachoftheseswitchesincludes 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)
•Power supply modules (two—one for operations and one for redundancy [1+1]) with the following choices:
◦650-W AC power supply with port-side intake airflow (burgundy coloring) (N9K-PAC-650W)
◦650-W AC power supply with port-side exhaust airflow (blue coloring) (N9K-PAC-650W-B)
◦930-W DC power supply with port-side intake airflow (green coloring) (UCSC-PSU-930WDC)
◦930-W DC power supply with port-side exhaust airflow (gray coloring) (UCS-PSU-6332-DC)
Note Do not mix AC and DC power supplies in the same chassis.
Note All fan modules and power supplies must use the same airflow direction during operations.
Cisco Nexus 9372PX and 9372PX-E ACI-Mode Switch Hardware Installation Guide
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Overview
Overview
The switch supports the Fabric Extenders (FEXs) listed at https://www.cisco.com/c/en/us/td/docs/switches/ datacenter/nexus9000/hw/interoperability/fexmatrix/fextables.html.
The following figure shows the switch features on the port side of the chassis.
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Beacon (BCN), Status (STS), and Environment |
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Screw holes for mounting brackets |
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(ENV) LEDs |
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10-Gigabit SFP+ APIC-facing ports (48) |
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Grounding pad |
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supporting 1- and 10-Gigabit Ethernet |
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340-Gigabit QSFP+ spine-facing ports (6) supporting 10and 40-Gigabit Ethernet
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.
1 |
Power supply modules (1 or 2) (AC power supplies shown) |
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Console port (1) |
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with slots numbered 1 (left) and 2 (right) |
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Fanmodules(4)withslotsnumberedfrom1(left)and4(right) |
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Grounding pad |
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Beacon (BCN) and Status (STS) LEDs |
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Management port (1) |
Cisco Nexus 9372PX and 9372PX-E ACI-Mode Switch Hardware Installation Guide
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Overview
Overview
4USB ports (2)
You can use the 1- and 10-Gigabit ports to connect this switch to up to 48 devices or to Nexus 2000 Series FEXs, which can be connected to additional servers (for the number of FEXs that can be supported, see the release notes for the NX-OS software that you are using). You can connect any of the supported FEXs to the downlink ports.
ForinstallationinformationontheCiscoNexus2000SeriesFEXs,seetheCisco Nexus 2000 Series Hardware Installation Guide. For information on a B22 FEX, see the Getting Started Guide for that FEX model.
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-sideexhaustairflow,thefanandACpowersupplieshavebluecoloring(DCpowersupplymoduleshave gray coloring).
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.
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.
Cisco Nexus 9372PX and 9372PX-E ACI-Mode Switch Hardware Installation Guide
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Overview
Overview
Cisco Nexus 9372PX and 9372PX-E ACI-Mode Switch Hardware Installation Guide
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C H A P T E R 2
• Temperature Requirements, page 5
• Humidity Requirements, page 5
• Altitude Requirements, page 6
• Dust and Particulate Requirements, page 6
• Minimizing Electromagnetic and Radio Frequency Interference, page 6
• Shock and Vibration Requirements, page 7
• Grounding Requirements, page 7
• Planning for Power Requirements, page 7
• Airflow Requirements, page 8
• Rack and Cabinet Requirements, page 9
• Clearance Requirements, page 9
The switch requires an operating temperature of 32 to 104 degrees Fahrenheit (0 to 40 degrees Celsius). If theswitchisnotoperating,thetemperaturemustbebetween –40to158degreesFahrenheit(–40to70degrees Celsius).
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 (non-condensing) 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, you should use a dehumidifier to maintain the humidity within an acceptable range.
Cisco Nexus 9372PX and 9372PX-E ACI-Mode Switch Hardware Installation Guide
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Preparing the Site
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 in electrical problems that are related to arcing and corona effects. This condition can also cause sealed componentswithinternalpressure,suchaselectrolyticcapacitors,tofailortoperformatareducedefficiency.
Exhaust fans cool power supplies and system fans cool switches by drawing in air and exhausting air out throughvariousopeningsinthechassis. However,fansalsoingestdustandotherparticles,causingcontaminant buildup in the switch and increased internal chassis temperature. A clean operating environment can greatly reducethenegativeeffectsofdustandotherparticles,whichactasinsulatorsandinterferewiththemechanical components in the switch.
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.
Electromagnetic interference (EMI) and radio frequency interference (RFI) from the switch can adversely affect other devices, such as radio and television (TV) receivers, operating near the switch. 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.
RFIisdefinedasanyEMIwithafrequencyabove10kHz. Thistypeofinterferencecantravelfromtheswitch 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 can be 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 between the field and the signals on the wires with the following implications:
•Bad wiring can result in radio interference emanating from the plant wiring.
•StrongEMI,especiallywhenitiscausedbylightningorradiotransmitters,candestroythesignaldrivers and receivers in the chassis and even create an electrical hazard by conducting power surges through lines into equipment.
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Preparing the Site
Note To predict and prevent strong EMI, you might need to consult experts in radio frequency interference (RFI).
The wiring is unlikely to emit radio interference if you use 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.
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 caused by lightning or other high-energy phenomena can easily couple enough energy into unshielded conductors to destroy electronic switches. You might 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 shockand vibration-tested for operating ranges, handling, and earthquake standards.
The switch is sensitive to variations in voltage 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 typesofproblems,ensurethatthereisanearth-groundconnectionfortheswitch.Youcanconnectthegrounding pad on the switch either directly to the earth-ground connection or to a fully bonded and grounded rack.
Whenyouproperlyinstallthechassisinagroundedrack,theswitchisgroundedbecauseithasametal-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 (we recommend 6-AWG wire for U.S. installations) connected 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 powersupplies,youmustconnectagroundingwirewhenwiringthepowersupplytotheDCpowersource.
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 930-W DC power supplies
Cisco Nexus 9372PX and 9372PX-E ACI-Mode Switch Hardware Installation Guide
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Preparing the Site
Note Both power supplies must be the same type. Do not mix AC and DC power supplies in the same chassis.
Note Forn+1redundancy,youcanuseoneortwopowersourcesforthetwopowersupplies.Forn+n redundancy, you must use two power sources and connect each power supply to a separate power source.
Thepowersuppliesareratedtooutputupto650W(ACpowersupplies)orupto930W(DCpowersupplies), but the switch requires less than those amounts of power from the power supply. To operate the switch you mustprovisionenoughpowerfromthepowersourcetocovertherequirementsofboththeswitchandapower supply. Typically, this switch and a power supply require about 210 W of power input from the power source, but you must provision as much as 537 W 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. Whencalculatingpowerrequirements,usetheswitchrequirementstodeterminetheamount of power required for the power supplies.
To minimize the possibility of circuit failure, make sure that each power-source circuit used by the switch is dedicated to the switch.
Note For the power cables to use with the power supplies, see Power Cable Specifications, on page 43.
Airflow Requirements
The switch is designed to be positioned with its ports in either the front or the rear of the rack depending on your cabling and maintenance requirements. Depending on which side of the switch faces the cold aisle, 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—Coolant 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-sideintakeairflow—Coolantairentersthechassisthroughtheportendinthecoldaisleandexhausts through the fan and power supply modules in the hot aisle.
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.
•Gray coloring on DC power supplies indicates port-side exhaust airflow.
•Green coloring on DC power supplies indicates port-side intake airflow.
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Preparing the Site
Note To prevent the switch from overheating and shutting down, you must position the air intake for the switch in a cold aisle, and all of 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 mountingrailsthatconformtoEnglishuniversalholespacingpersection1oftheANSI/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).
•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).
Additionally, you must have power receptacles located within reach of the power cords 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.
You must provide the chassis with adequate clearance between the chassis and any other rack, device, or structure so that you can properly install the chassis, 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.
Cisco Nexus 9372PX and 9372PX-E ACI-Mode Switch Hardware Installation Guide
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Preparing the Site
Clearance Requirements
1 |
Chassis |
5 |
Depth of the chassis |
2 |
Vertical rack-mount posts and rails |
6 |
Maximum extension of the bottom-support rails |
3 |
Chassis width |
7 |
Depthofthefrontclearancearea(thisequalsthe |
|
|
|
depth of the chassis) |
4Width of the front clearance area (this equals the width of the chassis with two rack-mount brackets attached to it)
Note Both the front and rear of the chassis must be open to both aisles for airflow.
Cisco Nexus 9372PX and 9372PX-E ACI-Mode Switch Hardware Installation Guide
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