Cisco Nexus 93600CD-GX Manual

Cisco Nexus 93600CD-GX ACI-Mode Switch Hardware Installation
Guide
First Published: 2019-09-27
Last Modified: 2021-02-01
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CONTENTS
Preface vii
PREFACE
Audience vii
Documentation Conventions vii
Documentation Feedback viii
Obtaining Documentation and Submitting a Service Request viii
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
Planning for Power Requirements 7
Airflow Requirements 9
Rack and Cabinet Requirements 9
Clearance Requirements 10
Installing the Chassis 13
CHAPTER 3
Safety 13
Installation Options with Rack-Mount Kits 16
Airflow Considerations 17
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Installation Guidelines 17
Unpacking and Inspecting the Switch 18
Installing the Switch Using the NXK-ACC-KIT-1RU Rack-Mount Kit 19
Grounding the Chassis 22
Starting the Switch 23
Connecting the Switch to the ACI Fabric 27
CHAPTER 4
ACI Fabric Topology 27
Preparing to Connect to Other Devices 28
Connecting Leaf Switches to APICs 29
Connecting Leaf Switches to Spine Switches 31
Installing a Gigabit Ethernet module (GEM) 32
Migration of Nodes From a First Generation Switch to a Second Generation Switch 32
Setting Up an Optional Console Interface 34
Setting Up an Optional Management Connection 35
Optic Transceiver Removal Using the Optics Extraction Tool 35
Maintaining Transceivers and Optical Cables 37
Replacing Components 39
CHAPTER 5
Replacing a Fan Module During Operations 39
Replacing a Power Supply Module 40
Removing an AC Power Supply 40
Removing an HVAC/HVDC Power Supply 41
Removing a DC Power Supply 41
Installing an AC Power Supply 42
Installing an HVAC/HVDC Power Supply 43
Installing a DC Power Supply 43
Connecting a Power Cable to an NXA-PDC-930W Power Supply 44
Rack Specifications 47
APPENDIX A
Overview of Racks 47
General Requirements for Cabinets and Racks 47
Requirements Specific to Standard Open Racks 48
Requirements Specific to Perforated Cabinets 48
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Contents

Cable Management Guidelines 49
System Specifications 51
APPENDIX B
Environmental Specifications 51
Switch Dimensions 51
Switch and Module Weights and Quantities 52
Transceiver and Cable Specifications 52
Switch Power Input Requirements 52
Power Specifications 53
1100-W AC Power Supply Specifications 53
1100-W HVAC/HVDC Power Supply Specifications 53
1100-W DC Power Supply Specifications 54
Power Cable Specifications 54
Power Cable Specifications for AC Power Supplies 54
HVAC/HVDC Power Cables Supported by ACI-Mode and NX-OS Mode Switches 56
DC Power Cable Specifications 57
Regulatory Standards Compliance Specifications 57
LEDs 59
APPENDIX C
Switch Chassis LEDs 59
Fan Module LEDs 59
Power Supply LEDs 59
Additional Kits 61
APPENDIX D
Rack Mount Kit NXK-ACC-KIT-1RU 61
Cisco Nexus 93600CD-GX ACI-Mode Switch Hardware Installation Guide
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Contents

Cisco Nexus 93600CD-GX ACI-Mode Switch Hardware Installation Guide
vi
Contents

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 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}
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
Cisco Nexus 93600CD-GX ACI-Mode Switch Hardware Installation Guide
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DescriptionConvention
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.
!, #
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.
Obtaining Documentation and Submitting a Service Request
For information on obtaining documentation, using the Cisco Bug Search Tool (BST), submitting a service
request, and gathering additional information, see What's New in Cisco Product Documentation, at:
https://www.cisco.com/warp/public/687/Directory/DirTAC.shtml.
Subscribe to What's New in Cisco Product Documentation, which lists all new and revised Cisco technical
documentation as an RSS feed and delivers content directly to your desktop using a reader application. The
RSS feeds are a free service.
Cisco Nexus 93600CD-GX ACI-Mode Switch Hardware Installation Guide
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Preface
Documentation Feedback

CHAPTER 1
Overview
•Overview, on page 1
Overview
The Cisco Nexus 93600CD-GX switch (N9K-C93600CD-GX) is a 1-rack unit (RU), fixed-port switch designed
for spine-leaf-APIC deployment in data centers.
This switch has the following ports:
• 28 10/40/100-Gigabit QSFP28 ports (ports 1-28)
• 8 10/40/100/400-Gigabit QSFP-DD ports (ports 29-36)
• Two management ports (one 10/100/1000BASE-T port and one 1-Gbps SFP port)
• One console port (RS-232)
• 1 USB port
This switch offers QSA 10G support on all ports.
Note
There is no support for 1-Gigabit nor 100-Megabit optics on this switch.
Note
For breakout information, see the Cisco APIC Layer 2 Networking Configuration Guide.
Leaf/Spine role considerations:
• This switch's default role is as a leaf switch.
• The default fabric links (ports 29-36) must be used for initial switch discovery via another switch.
• To change the switch from the default role, the switch must be rebooted (you must select the role of leaf
or spine, except in the case of the default spine switch being connected directly to the APIC).
• A default spine switch that is connected directly to the APIC will be converted to a leaf switch,
automatically.
Cisco Nexus 93600CD-GX ACI-Mode Switch Hardware Installation Guide
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• Port-profile (downlink/fabric link conversion) can be done after it’s registered to the APIC.
Discovery considerations:
• Discovery via APIC – use the default downlink ports.
• Spine discovery – use the default fabric links (ports 29-36) and convert the switch to spine (reboot is
required).
• Leaf discovery via spine – use the default fabric links (ports 29-36).
• Sub leaf discovery via leaf – use the default fabric links (ports 29-36).
• Multipod (Pod 2+) first spine discovery via IPN – Connect the IPN to one of the default fabric links
(ports 29-36). Ensure the spine has at least one leaf node connected to it.
This switch includes the following user-replaceable components:
• Fan modules (six) with the following airflow choices:
• Port-side exhaust fan module with blue coloring (NXA-FAN-35CFM-PE)
• Port-side intake fan module with burgundy coloring (NXA-FAN-35CFM-PI)
This switch runs with +1 redundancy mode, so that if one fan fails, the switch
can sustain operation. But if a 2nd fan fails, this switch is not designed to sustain
operation. Hence before waiting for major threshold temperature to be hit, the
switch will power down due to Powered-down due to fan policy trigger.
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
• Power supply modules (two—One for operations and one for redundancy [1+1]) with the following
choices:
• 1100-W port-side exhaust AC power supply with blue coloring (NXA-PAC-1100W-PE2)
• 1100-W port-side intake AC power supply with burgundy coloring (NXA-PAC-1100W-PI2)
• 1100-W port-side exhaust HVAC/HVDC power supply with blue coloring (NXA-PHV-1100W-PE)
• 1100-W port-side intake HVAC/HVDC power supply with burgundy coloring
(NXA-PHV-1100W-PI)
• 1100-W port-side exhaust DC power supply with blue coloring (NXA-PDC-1100W-PE)
• 1100-W port-side intake DC power supply with burgundy coloring (NXA-PDC-1100W-PI)
Cisco Nexus 93600CD-GX ACI-Mode Switch Hardware Installation Guide
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Overview
Overview

All fan modules and power supplies must use the same airflow direction.
Note
In the event that only one power supply is operating in an active system and a
second power supply is inserted, the system fan will slow down to 50% of Max
speed for 12 seconds. It can take up to 10 seconds for the second power supply
to become active. Please do not remove the first power supply during this
time-frame, in order to avoid system shutdown.
Note
The following figure shows the switch features on the port side of the chassis.
8 100/400-Gigabit QSFP-DD ports
Ports 29-36 support 4x10 and 4x25G as port
profile converted downlinks
3Beacon (BCN), Status (STS), and Environment
(ENV) LEDs
1
28 40/100-Gigabit QSFP28 ports
Ports 25-28 support 4x10G and 4x25G breakout
as native downlinks
2
To determine which transceivers, adapters, and cables 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.
Management port (1—RJ-45 copper port)4Power supply modules (1 or 2) (AC
power supplies shown) with slots
numbered 1 (left) and 2 (right)
1
Management port (1—SFP optical port)5Fan modules (6) with slots
numbered from 1 (left) to 6 (right)
2
USB port (1)6Console port (1)3
Cisco Nexus 93600CD-GX ACI-Mode Switch Hardware Installation Guide
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Overview
Overview

The following figure shows the side of the chassis.
Grounding pad3Screw holes for mounting brackets1
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
power supplies have burgundy coloring. For port-side exhaust airflow, the fan and power supplies have blue
coloring.
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.
All fan and power supply modules must have the same direction of airflow. Otherwise, the switch can overheat
and shut down.
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
Cisco Nexus 93600CD-GX ACI-Mode Switch Hardware Installation Guide
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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
•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).
Humidity Requirements
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 based on power supply installed; see critical components list in the system CB report for
altitude rating.
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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
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
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Preparing the Site
Shock and Vibration Requirements

• Two 1100-W HVAC/HVDC power supplies
For n+1 redundancy, you can use one or two power sources for the two power supplies. For n+nredundancy,
you must use two power sources and connect each power supply to a separate power source.
Note
Some of the power supply modules have rating capabilities that exceed the switch requirements. When
calculating your power requirements, use the switch requirements to determine the amount of power that is
required for the power supplies.
Note
To minimize the possibility of circuit failure, make sure that each power-source circuit that is used by the
switch is dedicated to the switch.
For AC input application, please refer to the following statement:
Note
Statement 1005—Circuit Breaker when using AC power supplies
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).
Warning
For DC input application, please refer to the following statement:
Note
Statement 1005—Circuit Breaker when using DC power supplies
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).
Warning
Statement 1033
Connect the unit only to DC power source that complies with the Safety Extra-Low Voltage (SELV)
requirements in IEC 60950 based safety standards.
Warning
Cisco Nexus 93600CD-GX ACI-Mode Switch Hardware Installation Guide
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Preparing the Site
Planning for Power Requirements

We recommend 8-AWG wire for DC installations in the U.S.
Note
For the power cables to use with the power supplies, see Power Cable Specifications, on page 54.
Note
Airflow Requirements
The switch is positioned with its ports in either the front or the rear of the rack depending on your cabling
and maintenance requirements. You must have fan and power supply modules that move the coolant air from
the cold aisle to the hot aisle in one of the following ways:
• Port-side exhaust airflow—Cool air enters the chassis through the fan and power supply modules in the
cold aisle and exhausts through the port end of the chassis in the hot aisle.
• Port-side intake airflow—Cool air enters the chassis through the port end in the cold aisle and exhausts
through the fan and power supply modules in the hot aisle.
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.
• White coloring on HVAC/HVDC power supplies indicates dual-direction airflow.
To prevent the switch from overheating and shutting down, you must position the air intake for the switch in
a cold aisle. The fan and power supply modules must have the same direction of airflow (even if their coloring
is different). If you must change the airflow direction for the switch, you must shutdown the switch before
changing the modules.
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
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:
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Preparing the Site
Airflow Requirements

• 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
Clearance Requirements
Provide the chassis with adequate clearance between the chassis and any other rack, device, or structure so
that you can properly install the chassis. Provide the chassis with adequate clearance to route cables, provide
airflow, and maintain the switch. For the clearances required for an installation of this chassis in a four-post
rack, see the following figure.
Depth of the chassis5Chassis1
Maximum extension of the bottom-support rails
36.0 in (91.0 cm)
6Vertical rack-mount posts and rails2
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Preparing the Site
Clearance Requirements

Depth of the front clearance area (equal to the
depth of the chassis).
7Chassis width
17.3 in (43.9 cm)
3
Width of the front clearance area (equal to the
width of the chassis with two rack-mount
brackets that are attached to it).
19.0 in (43.3 cm)
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

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Preparing the Site
Clearance Requirements