Cisco Nexus 9348GC-FX3 Manual

Cisco Nexus 9348GC-FX3 NX-OS Mode Switch Hardware Installation
Guide
First Published: 2023-08-18
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CONTENTS
Overview 1
CHAPTER 1
Overview 1
Preparing the Site 5
CHAPTER 2
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
Grounding Requirements 7
Rack and Cabinet Requirements 7
Installing the Chassis 9
CHAPTER 3
Safety 9
Installation Options with Rack-Mount Kits 12
Airflow Considerations 13
Installation Guidelines 13
Unpacking and Inspecting the Switch 14
Installing the Switch Using the NXK-ACC-KIT-1RU Rack-Mount Kit 14
Grounding the Chassis 18
Starting the Switch 19
Connecting the Switch to the Network 23
CHAPTER 4
Overview of Network Connections 23
Connecting a Console to the Switch 24
Cisco Nexus 9348GC-FX3 NX-OS Mode Switch Hardware Installation Guide
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Creating the Initial Switch Configuration 25
Setting Up the Management Interface 26
Connecting Interface Ports to Other Devices 27
Replacing Components 29
CHAPTER 5
Replacing a Fan Module 29
Removing a Fan Module 29
Installing a Fan Module 30
Replacing a Power Supply Module 30
Removing an AC Power Supply 30
Removing an HVAC/HVDC Power Supply 31
Removing a DC Power Supply 31
Installing an AC Power Supply 32
Installing an HVAC/HVDC Power Supply 33
Installing a DC Power Supply 33
Rack Specifications 35
APPENDIX A
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
APPENDIX B
Environmental Specifications 37
Switch Dimensions 38
Switch and Module Weights and Quantities 38
Transceiver and Cable Specifications 38
Switch Power Input Requirements 39
Power Specifications 39
350-W AC Power Supply Specifications 39
350-W PHV Power Supply Specifications 40
440-W DC Power Supply Specifications 40
Power Cable Specifications 41
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Contents

Power Cable Specifications for AC Power Supplies 41
HVAC/HVDC Power Cables Supported by ACI-Mode and NX-OS Mode Switches 42
DC Power Cable Specifications 43
Regulatory Standards Compliance Specifications 43
LEDs 45
APPENDIX C
Switch Chassis LEDs 45
Fan Module LEDs 46
Power Supply LEDs 46
Additional Kits 47
APPENDIX D
Rack Mount Kit NXK-ACC-KIT-1RU 47
Cisco Nexus 9348GC-FX3 NX-OS Mode Switch Hardware Installation Guide
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Contents

Cisco Nexus 9348GC-FX3 NX-OS Mode Switch Hardware Installation Guide
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Contents

CHAPTER 1
Overview
•Overview, on page 1
Overview
The Cisco Nexus 9348GC-FX3 switch (N9K-C9348GC-FX3) is a 1-RU fixed-port, L2/L3 switch, designed
for deployment in data centers. This switch has 48 10/100/1000M copper RJ45 downlink ports, 4 10-/25G
SFP28 uplink ports, and 2 40-/100G QSFP28 uplink ports.
This switch includes the following user-replaceable components:
• Fan modules (three) with the following airflow choices:
• Port-side intake airflow with burgundy coloring (NXA-SFAN-30CFM-PI)
• Port-side exhaust airflow with blue coloring (NXA-SFAN-30CFM-PE)
This switch will power down due to a fan-policy trigger if fewer than 2 fans are
operational.
Note
Table 1: Fan Speeds for this Switch
Port-Side Exhaust
Fan Speed %
Port-Side Intake
Fan Speed %
40%40%Typical/Minimum
100%100%Maximum
Note
Each fan module has two rotors. The switch can function normally if one rotor
inside the any one fan module fails. In case of more than one rotor failure, the
switch will issue a warning and power down in 2 minute.
Note
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• Power supply modules (two—one for operations and one for redundancy [1+1]) with the following
choices (a mix of AC and DC power sources is supported but do not mix airflow directions):
• 350-W AC power supply with port-side intake airflow (burgundy coloring) (NXA-PAC-350W-PI2)
• 350-W AC power supply with port-side exhaust airflow (blue coloring) (NXA-PAC-350W-PE2)
•350-W PHV power supply with port-side intake airflow (burgundy coloring) (NXA-PHV-350W-PI)
• 350-W PHV power supply with port-side exhaust airflow (blue coloring) (NXA-PHV-350W-PE)
• 440-W DC power supply with port-side intake airflow (burgundy coloring) (NXA-PDC-440W-PI)
• 440-W DC power supply with port-side exhaust airflow (blue coloring) (NXA-PDC-440W-PE)
The 350-W AC power supply does not have the standby voltage to be able to
carry to a second power supply, to allow it to communicate and poll the device.
Note
The following figure shows the switch features on the port side of the chassis.
SFP28 ports (4)2LEDs1
10M/100M/1G RJ45 ports (48)4QSFP28 ports (2)3
To determine which transceivers, adapters, and cables are support 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.
Grounding pad2Console port1
Fan modules (3) with slots numbered from 1 (left) to 3 (right)4Power supply modules (1 or 2) (AC
power supplies shown) with slots
numbered 1 (left) and 2 (right)
3
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Overview
Overview

USB port6Management port (SFP)5
Management port (RJ45)7
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.
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

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Overview
Overview

CHAPTER 2
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
•Rack and Cabinet Requirements, on page 7
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).
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 (nonoperating) and 5- to 90-percent (operating) 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
Altitude rating is 10,000 ft (3048 m). For China, it is 6,562 ft (2000 m).
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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 keeping your environment free of dust and particles, 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. 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.
To predict and prevent strong EMI, you need to consult experts in radio frequency interference (RFI).
Note
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
Dust and Particulate Requirements

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.
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 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.
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.
Note
An electrical conducting path shall exist between the product chassis and the metal surface of the enclosure
or rack in which it is mounted or to a grounding conductor. Electrical continuity shall be provided by using
thread-forming type mounting screws that remove any paint or non-conductive coatings and establish a
metal-to-metal contact. Any paint or other non-conductive coatings shall be removed on the surfaces between
the mounting hardware and the enclosure or rack. The surfaces shall be cleaned and an antioxidant applied
before installation.
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)
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Preparing the Site
Shock and Vibration Requirements

• 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).
Also, you must have power receptacles that are located within reach of the power cords that are used with the
switch.
Statement 1048—Rack Stabilization
The rack stabilizing mechanism must be in place, or the rack must be bolted to the floor before installation
or servicing. Failure to stabilize the rack can cause bodily injury.
Warning
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Preparing the Site
Rack and Cabinet Requirements

CHAPTER 3
Installing the Chassis
•Safety, on page 9
•Installation Options with Rack-Mount Kits, on page 12
•Airflow Considerations, on page 13
•Installation Guidelines, on page 13
•Unpacking and Inspecting the Switch, on page 14
•Installing the Switch Using the NXK-ACC-KIT-1RU Rack-Mount Kit, on page 14
•Grounding the Chassis, on page 18
•Starting the Switch, on page 19
Safety
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.
Statement 1071—Warning Definition
IMPORTANT SAFETY INSTRUCTIONS
Before you work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar
with standard practices for preventing accidents. Read the installation instructions before using, installing, or
connecting the system to the power source. Use the statement number provided at the end of each warning
statement to locate its translation in the translated safety warnings for this device.
SAVE THESE INSTRUCTIONS
Warning
Statement 1089—Instructed and Skilled Person Definitions
An instructed person is someone who has been instructed and trained by a skilled person and takes the necessary
precautions when working with equipment.
A skilled person or qualified personnel is someone who has training or experience in the equipment technology
and understands potential hazards when working with equipment.
There are no serviceable parts inside. To avoid risk of electric shock, do not open.
Warning
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Statement 1074—Comply with Local and National Electrical Codes
To reduce risk of electric shock or fire, installation of the equipment must comply with local and national
electrical codes.
Warning
Statement 407—Japanese Safety Instruction
You are strongly advised to read the safety instruction before using the product.
https://www.cisco.com/web/JP/techdoc/pldoc/pldoc.html
When installing the product, use the provided or designated connection cables/power cables/AC adapters.
Note
Statement 1017—Restricted Area
This unit is intended for installation in restricted access areas. Only skilled, instructed, or qualified personnel
can access a restricted access area.
Warning
Statement 1030—Equipment Installation
Only trained and qualified personnel should be allowed to install, replace, or service this equipment.
Warning
Statement 1091—Installation by an Instructed Person
Only an instructed person or skilled person should be allowed to install, replace, or service this equipment.
See statement 1089 for the definition of an instructed or skilled person.
There are no serviceable parts inside. To avoid risk of electric shock, do not open.
Warning
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Installing the Chassis
Safety

Statement 1028—More Than One Power Supply
This unit might have more than one power supply connection. To reduce risk of electric shock, remove all
connections to de-energize the unit.
Warning
Statement 1003—Power Disconnection
To reduce risk of electric shock or personal injury, disconnect DC power before removing or replacing
components or performing upgrades.
Warning
Statement 1046—Installing or Replacing the Unit
To reduce risk of electric shock, when installing or replacing the unit, the ground connection must always be
made first and disconnected last.
If your unit has modules, secure them with the provided screws.
Warning
Statement 1022—Disconnect Device
To reduce the risk of electric shock and fire, a readily accessible disconnect device must be incorporated in
the fixed wiring.
Warning
Statement 1033—Safety Extra-Low Voltage (SELV)—IEC 60950/ES1–IEC 62368 DC Power Supply
To reduce the risk of electric shock, connect the unit to a DC power source that complies with the SELV
requirements in IEC 60950-based safety standards or ES1 and PS1 requirements in IEC 62368-based safety
standards or to a Class 2 power supply.
Warning
Statement 1024—Ground Conductor
This equipment must be grounded. To reduce the risk of electric shock, 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.
Warning
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Installing the Chassis
Safety

Statement 1032—Lifting the Chassis
To prevent personal injury or damage to the chassis, never attempt to lift or tilt the chassis using the handles
on modules, such as power supplies, fans, or cards. These types of handles are not designed to support the
weight of the unit.
Warning
Statement 1006—Chassis Warning for Rack-Mounting and Servicing
To prevent bodily injury when mounting or servicing this unit in a rack, you must take special precautions to
ensure that the system remains stable. The following guidelines are provided to ensure your safety:
• This unit should be mounted at the bottom of the rack if it is the only unit in the rack.
• When mounting this unit in a partially filled rack, load the rack from the bottom to the top with the
heaviest component at the bottom of the rack.
• If the rack is provided with stabilizing devices, install the stabilizers before mounting or servicing the
unit in the rack.
Warning
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.
Caution
For AC input application, please refer to the statement below:
Note
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).
Warning
Installation Options with Rack-Mount Kits
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.
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Installing the Chassis
Installation Options with Rack-Mount Kits

The rack or cabinet that you use must meet the requirements listed the in General Requirements for Cabinets
and Racks, on page 35 section.
You are responsible for verifying that your rack and rack-mount hardware comply with the guidelines that
are described in this doc.
Note
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 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.
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.
Caution
• 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.
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.
Caution
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Installing the Chassis
Airflow Considerations

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.
Keep the shipping container in case the chassis requires shipping at a later time.
Tip
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
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
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.
You must supply the eight 10-32 or 12-24 screws required to mount the slider rails and switch to the rack.
Note
Before you begin
• You have inspected the switch shipment to ensure that you have everything ordered.
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Installing the Chassis
Unpacking and Inspecting the Switch