Cisco Nexus 93240YC-FX2 Service Manual
Cisco Nexus 93240YC-FX2 NX-OS Mode Switch Hardware Installation Guide
First Published: 2018-02-12
Last Modified: 2018-07-18
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Fax: 408 527-0883
©
2018 Cisco Systems, Inc. All rights reserved.
CONTENTS
PREFACE
CHAPTER 1
CHAPTER 2
Preface vii
Audience vii
Documentation Conventions vii
Documentation Feedback viii
Obtaining Documentation and Submitting a Service Request viii
Overview 1
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
Shock and Vibration Requirements 7
CHAPTER 3
Grounding Requirements 7
Planning for Power Requirements 7
Airflow Requirements 9
Rack and Cabinet Requirements 9
Clearance Requirements 10
Installing the Switch Chassis 11
Safety 11
Installation Options with Racks and Cabinets 12
Airflow Considerations 12
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Contents
Installation Guidelines 12
Unpacking and Inspecting the Switch 13
Installing the Switch 14
Grounding the Chassis 18
Starting the Switch 19
CHAPTER 4
CHAPTER 5
Connecting the Switch to the Network 23
Overview of Network Connections 23
Connecting a Console to the Switch 23
Creating the Initial Switch Configuration 25
Setting Up the Management Interface 26
Connecting Interface Ports to Other Devices 27
Uplink Connections 27
Downlink Connections 28
Replacing Components 29
Replacing a Fan Module 29
Removing a Fan Module 29
Installing a Fan Module 30
Replacing a Power Supply Module 30
Replacing an AC Power Supply 31
Replacing a High Voltage (HVAC/HVDC) Power Supply 32
APPENDIX A
APPENDIX B
iv
Replacing a DC Power Supply 33
Rack Specifications 35
Overview of Racks 35
General Requirements for Cabinets and Racks 35
Requirements Specific to Standard Open Racks 36
Requirements Specific to Perforated Cabinets 36
Cable Management Guidelines 36
System Specifications 37
Environmental Specifications 37
Switch Dimensions 37
Cisco Nexus 93240YC-FX2 NX-OS Mode Switch Hardware Installation Guide
Switch and Module Weights and Quantities 38
Transceiver and Cable Specifications 38
Switch Power Input Requirements 38
Power Specifications 39
1100-W AC Power Supply Specifications 39
1100-W HVAC/HVDC Power Supply Specifications 40
Power Cable Specifications 40
AC Power Cables Supported by NX-OS Mode Switches 40
HVAC/HVDC Power Cables Supported by ACI-Mode and NX-OS Mode Switches 41
DC Power Cable Specifications 42
Regulatory Standards Compliance Specifications 42
Contents
APPENDIX C
APPENDIX D
APPENDIX E
LEDs 45
Switch Chassis LEDs 45
Fan Module LEDs 46
Power Supply LEDs 46
Additional Kits 47
Accessory Kit 47
Site Preparation and Maintenance Records 49
Site Preparation Checklist 49
Contact and Site Information 50
Chassis and Module Information 51
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Contents
Cisco Nexus 93240YC-FX2 NX-OS Mode Switch Hardware Installation Guide
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Preface
• Audience, on page vii
• Documentation Conventions, on page vii
• Documentation Feedback, on page viii
• Obtaining Documentation and Submitting a Service Request, on page viii
Audience
This publication is for 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
Preface
DescriptionConvention
string
Examples use the following conventions:
italic screen font
!, #
Documentation Feedback
To provide technical feedback on this document, or to report an error or omission, please send your comments
to . We appreciate your feedback.
A nonquoted set of characters. Do not use quotation marks around the
string or the string will include the quotation marks.
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.
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.
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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Cisco Nexus 93240YC-FX2 NX-OS Mode Switch Hardware Installation Guide
Overview
CHAPTER 1
Overview
• Overview, on page 1
The Cisco Nexus 93240YC-FX2 (N9K-C93240YC-FX2) is a 1.2-RU, fixed-port switch designed for deployment
in data centers. This switch has 48 1/10/25-Gigabit Ethernet SFP28 ports and 12 40/100-Gigabit Ethernet
QSFP28 ports. The ports on this switch can operate in multiple template configurations. This switch includes
the following user-replaceable components:
• Fan modules (five) with the following airflow choices:
• Port-side exhaust airflow with blue coloring (NXA-FAN-35CFM-PE)
• Port-side intake airflow with burgundy coloring (NXA-FAN-35CFM-PI)
• Power supply modules (two—one for operations and one for redundancy [1+1]) with the following
choices (do not mix AC and DC power sources and do not mix airflow directions):
• 1100-W AC power supply with port-side intake airflow (burgundy coloring) (NXA-PAC-1100W-PI2)
• 1100-W AC power supply with port-side exhaust airflow (blue coloring) (NXA-PAC-1100W-PE2)
• 1100-W DC power supply with port-side exhaust airflow (blue coloring) (NXA-PDC-1100W-PE)
• 1100-W HVAC/HVDC power supply with port-side intake airflow (burgundy coloring)
(NXA-PHV-1100W-PI)
• 1100-W HVAC/HVDC power supply with port-side exhaust airflow (blue coloring)
(NXA-PHV-1100W-PE)
The following figure shows the hardware features seen from the port side of the chassis.
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Overview
Overview
1
Management port (SFP+ port)6Chassis LEDs (Beacon [BCN], Status [STS], and
Environment [ENV])
USB port710-/25-Gigabit Ethernet SFP28 ports (48)2
Screw holes (6) for attaching rack mounting
840-/100-Gigabit Ethernet QSFP28 ports (12)3
brackets
Grounding pad9Console port (RS232 port)4
Management port (RJ-45 port)5
To determine which transceivers, adapters, and cables this switch supports, see the Cisco Transceiver Modules
Compatibility Information document.
The following figure shows the hardware features seen from the power supply side of the chassis.
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Overview
Overview
Fan modules (5) with fan slot 1 on the left and
1
brackets
3Screw holes (6) for attaching rack mounting
fan slot 5 on the right
Two power supplies (one used for operations and
4Grounding pad2
one used for redundancy) (AC power supplies
shown) with power supply slot 1 on the left and
slot 2 on the right
Note
USB support is limited to USB 2.0 devices that use less than 2.5 W (less than 0.5 A inclusive of surge current).
Devices, such as external hard drives, that instantaneously draw more than 0.5 A are not supported.
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. To determine the airflow direction of the
modules installed in your switch, see the following table.
Port-Side Exhaust Airflow ColoringPort-Side Intake Airflow ColoringReplaceable Modules
BlueBurgundyFans
BlueBurgundyAC power supplies
WhiteHVAC/HVDC power supplies
The fan and power supply modules are field replaceable. 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
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 automatically uses
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.
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.
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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 (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.
Altitude Requirements
The following table lists the maximum altitude that this switch is tested to operate. This switch is rated to
operate at altitudes from 0 to 10,000 feet (0 to 3,048 meters). If you operate this switch at a higher altitude
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Dust and Particulate Requirements
(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.
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.
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, 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.
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.
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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 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 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 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 (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 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 1100-W AC power supplies
• Two 1100-W DC power supplies
• Two 1100-W HVAC/HVDC power supplies
Note
Both power supplies must be the same type. Do not mix AC and DC 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 1100 W, 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 367 W of power input from the power source, but you must provision as much as 777 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. When calculating power requirements, use the switch requirements to determine the amount
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.
Preparing the Site
Note
Warning
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 are rated not greater than 20A (North America), 16A (Europe), and 13A (UK).
For DC 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 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 40.
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Preparing the Site
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.
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
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
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).
Additionally, you must have power receptacles located within reach of the power cords used with the switch.
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Clearance Requirements
Preparing the Site
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
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.
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
7Chassis width3
depth of the chassis)
Width of the front clearance area (this equals the
4
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.
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