Cisco Nexus 9372PX Manual

Cisco Nexus 9372PX and 9372PX-E NX-OS-Mode Switches Hardware
Installation Guide
First Published: September 30, 2014
Last Modified: November 17, 2015
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©2014-2015 Cisco Systems, Inc. All rights reserved.

CONTENTS
Preface 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
CHAPTER 1 Overview 1
Overview 1
CHAPTER 2 Preparing the Site 5
Temperature Requirements 5
Humidity Requirements 5
Altitude Requirements 6
Dust and Particulate Requirements 6
Minimizing Electromagnetic and Radio Frequency Interference 6
Shock and Vibration Requirements 7
Grounding Requirements 7
Planning for Power Requirements 7
Airflow Requirements 8
Rack and Cabinet Requirements 9
Clearance Requirements 10
CHAPTER 3 Installing the Switch Chassis 11
Safety 11
Installation Options with Racks and Cabinets 12
Airflow Considerations 12
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Installation Guidelines 12
Unpacking and Installing the Switch 13
Installing the Switch 14
Grounding the Chassis 19
Starting the Switch 21
CHAPTER 4 Connecting the Switch to the Network 25
Connecting to the Network 25
Preparing for Network Connections 25
Connecting to a Console 26
Connecting the Management Interface 27
Connecting Interface Ports to Other Devices 27
Installing SFP+ and SFP Transceivers 28
Installing SFP+ and SFP Optical Cables 29
Installing QSFP+ Transceivers 29
CHAPTER 5 Replacing Components 31
Replacing a Fan Module 31
Removing a Fan Module 31
Installing a Fan Module 32
Replacing a Power Supply Module 32
Removing an HVAC/HVDC Power Supply 33
Removing an AC Power Supply 33
Removing a DC Power Supply 34
Installing an HVAC/HVDC Power Supply 35
Installing an AC Power Supply 36
Installing a DC Power Supply 36
Wiring a 48 V DC Electrical Connector Block 37
APPENDIX A Rack Specifications 41
Overview of Racks 41
General Requirements for Cabinets and Racks 41
Requirements Specific to Standard Open Racks 42
Requirements Specific to Perforated Cabinets 42
Cable Management Guidelines 42
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APPENDIX B System Specifications 43
Environmental Specifications 43
Switch Dimensions 43
Switch and Module Weights and Quantities 44
Transceiver and Cable Specifications 44
Power Input Requirements 44
Power Cord Specifications 45
APPENDIX C LEDs 47
Switch Chassis LEDs 47
Fan Module LEDs 48
Power Supply LEDs 48
APPENDIX D Accessory Kits 51
Accessory Kit Contents 51
APPENDIX E Site Preparation and Maintenance Records 53
Site Preparation Checklist 53
Contact and Site Information 55
Chassis and Module Information 55
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Contents

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Contents

Preface
•Audience, page vii
•Documentation Conventions, page vii
•Related Documentation for Cisco Nexus 9000 Series NX-OS Software, page viii
•Documentation Feedback, page x
•Obtaining Documentation and Submitting a Service Request, 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:
DescriptionConvention
Bold text indicates the commands and keywords that you enter literally
as shown.
bold
Italic text indicates arguments for which the user supplies the values.
Italic
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.
[x | y]
Braces enclosing keywords or arguments separated by a vertical bar
indicate a required choice.
{x | y}
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DescriptionConvention
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.
[x {y | z}]
Indicates a variable for which you supply values, in context where italics
cannot be used.
variable
A nonquoted set of characters. Do not use quotation marks around the
string or the string will include the quotation marks.
string
Examples use the following conventions:
DescriptionConvention
Terminal sessions and information the switch displays are in screen font.screen font
Information you must enter is in boldface screen font.boldface screen font
Arguments for which you supply values are in italic screen font.
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
of code indicates a comment line.
!, #
Related Documentation for Cisco Nexus 9000 Series NX-OS
Software
The entire Cisco NX-OS 9000 Series documentation set is available at the following URL:
http://www.cisco.com/en/US/products/ps13386/tsd_products_support_series_home.html
Release Notes
The release notes are available at the following URL:
http://www.cisco.com/en/US/products/ps13386/prod_release_notes_list.html
Configuration Guides
These guides are available at the following URL:
http://www.cisco.com/en/US/products/ps13386/products_installation_and_configuration_guides_list.html
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Preface
Related Documentation for Cisco Nexus 9000 Series NX-OS Software

The documents in this category include:
•Cisco Nexus 2000 Series NX-OS Fabric Extender Software Configuration Guide for Cisco Nexus 9000
Series Switches
•Cisco Nexus 9000 Series NX-OS Fundamentals Configuration Guide
•Cisco Nexus 9000 Series NX-OS High Availability and Redundancy Guide
•Cisco Nexus 9000 Series NX-OS Interfaces Configuration Guide
•Cisco Nexus 9000 Series NX-OS Layer 2 Switching Configuration Guide
•Cisco Nexus 9000 Series NX-OS Multicast Routing Configuration Guide
•Cisco Nexus 9000 Series NX-OS Quality of Service Configuration Guide
•Cisco Nexus 9000 Series NX-OS Security Configuration Guide
•Cisco Nexus 9000 Series NX-OS System Management Configuration Guide
•Cisco Nexus 9000 Series NX-OS Unicast Routing Configuration Guide
•Cisco Nexus 9000 Series NX-OS Verified Scalability Guide
•Cisco Nexus 9000 Series NX-OS VXLAN Configuration Guide
Other Software Documents
•Cisco Nexus 7000 Series and 9000 Series NX-OS MIB Quick Reference
•Cisco Nexus 9000 Series NX-OS Programmability Guide
•Cisco Nexus 9000 Series NX-OS Software Upgrade and Downgrade Guide
•Cisco Nexus 9000 Series NX-OS System Messages Reference
•Cisco Nexus 9000 Series NX-OS Troubleshooting Guide
•Cisco NX-OS Licensing Guide
•Cisco NX-OS XML Interface User Guide
Hardware Documents
•Cisco Nexus 3000 Series Hardware Installation Guide
•Cisco Nexus 93120TX NX-OS-Mode Switch Hardware Installation Guide
•Cisco Nexus 93128TX NX-OS-Mode Switch Hardware Installation Guide
•Cisco Nexus 9332PQ NX-OS-Mode Switch Hardware Installation Guide
•Cisco Nexus 9372PX NX-OS-Mode Switch Hardware Installation Guide
•Cisco Nexus 9372TX NX-OS-Mode Switch Hardware Installation Guide
•Cisco Nexus 9396PX NX-OS-Mode Switch Hardware Installation Guide
•Cisco Nexus 9396TX NX-OS-Mode Switch Hardware Installation Guide
•Cisco Nexus 9504 NX-OS-Mode Switch Hardware Installation Guide
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Preface
Related Documentation for Cisco Nexus 9000 Series NX-OS Software

•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 [email protected]. 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: http://
www.cisco.com/c/en/us/td/docs/general/whatsnew/whatsnew.html.
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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Preface
Documentation Feedback

CHAPTER 1
Overview
•Overview, page 1
Overview
The Cisco Nexus 9372PX and 9372PX-E switches (N9K-C9372PX and N9K-C9372PX-E) are 1 rack unit
(RU) switches that support 48 1- and 10-Gigabit SFP+ downlink ports, six 40-Gigabit QSFP+ uplink ports,
one 100/1000 network management ports, one RS-232 console port for setting the initial switch configuration,
and two USB ports for saving or loading switch configurations. The chassis for these switches include the
following user-replaceable components:
•Fan modules (four) with the following airflow choices:
◦Port-side exhaust fan module with blue coloring (NXA-FAN-30CFM-F)
◦Port-side intake fan module with burgundy coloring (NXA-FAN-30CFM-B)
•Power supply modules (two—one for operations and one for redundancy [1+1]) with the following
choices:
◦1200-W HVAC/HVDC dual-direction airflow power supply with white coloring (N9K-PUV-1200W)
◦650-W port-side intake AC power supply with burgundy coloring (N9K-PAC-650W)
◦650-W port-side exhaust AC power supply with blue coloring (N9K-PAC-650W-B)
◦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)
You can use the power supply types interchangeably so long as they have the same
direction of airflow as the fan modules. If you are using the 1200-W HVAC/HVDC
power supply, the power supply automatically uses the same airflow direction as used
by the other modules in the switch.
Note
This switch supports connections to the following Fabric Extenders (FEXs):
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•Cisco Nexus 2348UPQ
•Cisco Nexus 2348TQ
•Cisco Nexus 2332TQ
•Cisco Nexus 2248TP-E
•Cisco Nexus 2248TP
•Cisco Nexus 2248PQ
•Cisco Nexus 2232TM-E
•Cisco Nexus 2232TM FEX
•Cisco Nexus 2232PP
•Cisco Nexus 2224TP
•B22DELL-P
•B22F
•B22HP FEX
•B22IBM-P
The following figure shows the switch features on the port side of the chassis.
Figure 1: Chassis Features on the Port Side of the Chassis
Screw holes for mounting brackets4Beacon (BCN), Status (STS), and Environment
(ENV) LEDs
1
Grounding pad51- and 10-Gigabit SFP+ interface ports (48)2
QSFP+ 40-Gigabit interface ports (6)3
To determine which transceivers, adapters, and cables are supported by this switch, see the Cisco Transceiver
Modules Compatibility Information document.
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Overview
Overview

The following figure shows the switch features on the power supply side of the chassis.
Figure 2: Chassis Features on the Power Supply Side of the Chassis
Console port (1)5Power supply modules (1 or 2) (AC power supplies shown)
with slots numbered 1 (left) and 2 (right)
1
Grounding pad6Fan modules (4) with slots numbered from 1 (left) and 4 (right)2
Management port (1)7Beacon (BCN) and Status (STS) LEDs3
USB ports (2)4
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.
For installation information on the Cisco Nexus 2000 Series FEXs, see the Cisco 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-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
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.
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Overview
Overview

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.
Note
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.
Caution
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Overview
Overview

CHAPTER 2
Preparing the Site
•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 10
Temperature Requirements
The switch requires an operating temperature of 32 to 104° F (0 to 40° C). If the switch is not operating, the
temperature must be between –40 to 158° F (–40 to 70° C).
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 operate at 8 to 80 percent relative humidity, with a humidity gradation of 10 percent
per hour. For nonoperating conditions, the switch can withstand from 5 to 95 percent 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.
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Altitude Requirements
If you operate a switch at a high 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 components with internal pressure, such as electrolytic capacitors, to fail or to perform at a
reduced efficiency. This switch is rated to operate at altitudes from –500 to 13,123 feet (–152 to 4,000 meters).
You can store the switch at altitudes of –1,000 to 30,000 feet (–305 to 9,144 meters).
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. A clean operating environment can greatly
reduce the negative effects of dust and other particles, which act as insulators and interfere with the mechanical
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.
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 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.
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 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.
•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.
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Preparing the Site
Altitude Requirements

To predict and prevent strong EMI, you might need to consult experts in radio frequency interference
(RFI).
Note
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.
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.
Caution
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 supplied by the power sources. Overvoltage, undervoltage,
and transients (or spikes) can erase data from the 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.
You must provide the grounding cable to make this connection, but you can connect the grounding wire to
the switch using a grounding lug that ships with the switch. Size the grounding wire to meet local and national
installation requirements. Depending on the power supply and system, a 12-AWG to 6-AWG copper conductor
is required for U.S. installations (for those installations, we recommend that you use commercially available
6-AWG wire). The length of the grounding wire depends on the proximity of the switch to proper grounding
facilities.
You automatically ground the power supplies when you connect them to power sources. You must also
connect the chassis to the facility earth ground.
Note
Planning for Power Requirements
The switch includes two power supplies (1-to-1 redundancy with current sharing) in one of the following
combinations (all power supplies must have the same airflow direction as the fan modules):
•Two 1200-W HVAC/HVDC power supplies
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Shock and Vibration Requirements

•Two 650-W AC power supplies
•Two 930-W DC power supplies
•Any combination of the above power supplies
For n+1 redundancy, you must provide power to both power supplies. For n+nredundancy, you must
provide power to both power supplies and each power supply must be connected to a different power
source.
Note
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
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.
To minimize the possibility of circuit failure, make sure that each power-source circuit used by the switch is
dedicated to the switch.
For the AC power cables that you can use with this switch, see Power Cord Specifications, on page 45.
For DC power cables, the recommended wire gauge is 8 AWG and the minimum wire gauge is 10 AWG.
Note
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-side intake airflow—Coolant 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—airflow direction is determined by the airflow direction of the installed fan
modules.
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.
•White coloring on HVAC/HVDC power supplies indicates dual-direction airflow.
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Airflow Requirements

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).
Note
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
To correctly install the switch in a cabinet that is located in a hot-aisle/cold-aisle environment, you should fit
the cabinet with baffles to prevent exhaust air from recirculating into the chassis air intake.
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 brackets.
•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.
For the power cord specifications, see the Power Cord Specifications.
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.
Warning
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Preparing the Site
Rack and Cabinet Requirements

Clearance Requirements
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.
Figure 3: Clearances Required for a Four-Post Rack Installation
Depth of the chassis5Chassis1
Maximum extension of the bottom-support rails6Vertical rack-mount posts and rails2
Depth of the front clearance area (this equals the
depth of the chassis)
7Chassis width3
Width of the front clearance area (this equals
the width of the chassis with two rack-mount
brackets attached to it)
4
Both the front and rear of the chassis must be open to both aisles for airflow.Note
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Preparing the Site
Clearance Requirements