Cisco Nexus 3000 series User manual

Installing the Chassis
•Safety, on page 1
•Preparing to Install the Chassis, on page 4
•Unpacking and Inspecting the Chassis, on page 6
•Installing the Chassis in a Four-Post Rack, on page 7
•Grounding the Chassis, on page 12
•Starting the Switch, on page 14
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.
Warning
Installing the Chassis
1

Statement 1004—Installation Instructions
Read the installation instructions before using, installing, or connecting the system to the power source.
Warning
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.
Warning
Statement 1005—Circuit Breaker
This product relies on the building’s installation for short-circuit (overcurrent) protection. To reduce risk of
electric shock or fire, ensure that the protective device is rated not greater than: 20A for AC, 60A for DC
Warning
Installing the Chassis
2
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—DC 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.
Warning
Statement 1022—Disconnect Device
To reduce risk of electric shock and fire, a readily accessible two-poled 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 risk of electric shock, connect the unit only to a DC power source that complies with the SELV
requirements in IEC 60950-based safety standards or ES1 requirements in IEC 62368-based safety standards.
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
Installing the Chassis
3
Installing the Chassis
Safety

Statement 1252—Equipment Grounding
This equipment must be grounded. To reduce the risk of electric shock, the power cord, plug, or combination
must be connected to a properly grounded electrode, outlet, or terminal.
Warning
Statement 1076—Clearance Around the Ventilation Openings
To prevent airflow restriction, allow clearance around the ventilation openings to be at least 30cm.
Warning
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 164—Lifting Requirement
2 people are required to lift the heavy parts of the product. To prevent injury, keep your back straight and lift
with your legs, not your back.
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
Statement 1047—Overheating Prevention
To reduce the risk of fire or bodily injury, do not operate the unit in an area that exceeds the maximum
recommended ambient temperature of: 40°C
Warning
Preparing to Install the Chassis
Before you can install the switch, you must verify the following:
Installing the Chassis
4
Installing the Chassis
Preparing to Install the Chassis

• The installation site meets the following requirements as stated in Chapter 2:
• Environmental requirements for temperature, humidity, altitude, and air particulates.
• Cabinet or rack is installed and meets the requirements for the switch.
Jumper power cords are available for use in a cabinet.
Note
• The rack is positioned so that you can install the switch with its cold air intakes positioned in a cold
aisle.
If the fan and power supply modules are burgundy or red colored, you must install the chassis with
its port side in a cold aisle. If the modules are blue colored, you must be able install the chassis with
the fan modules in a cold aisle.
•Earth ground connection is close to the switch. You must be able to easily connect the switch directly
to an earth ground or indirectly through a grounded rack.
High leakage current. Earth connection essential before connecting to power
supply.
Caution
• Site power meets the switch requirements. If you are using n+n redundancy, you must have two
power sources within reach of the switch when it is installed in the cabinet or rack.
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 systems such as the Cisco Nexus switches. These switches can have
substantial current draw fluctuations because of fluctuating data traffic patterns.
Caution
Ensure that circuits are sized according to local and national codes. For North America, the power
supply requires a 15-A or 20-A circuit.
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
Statement 1076—Clearance Around the Ventilation Openings
To prevent airflow restriction, allow clearance around the ventilation openings
to be at least:
Warning
• There is adequate clearance around the rack to install the switch and to allow for unimpeded airflow.
• You have the following equipment in addition to the switch and the kits shipped with the switch:
Installing the Chassis
5
Installing the Chassis
Preparing to Install the Chassis

• Eight customer-supplied 12-24 or 10-32 screws (required for attaching slider rails and mounting
bracket to the mounting rails)
• Number 1 and number 2 Phillips screwdrivers with torque capability
• 3/16-inch flat-blade screwdriver
• Tape measure and level
• ESD wrist strap or other grounding device (wrist strap can be found in the accessory kit)
• Antistatic surface large enough to place the switch
• Grounding cable (6 AWG recommended), sized according to local and national installation
requirements; the required length depends on the proximity of the switch to proper grounding
facilities
• Crimping tool large enough to accommodate the girth of the grounding lug
• Wire stripping tool
Unpacking and Inspecting the Chassis
When handling switch components, such as fan or power supply modules, wear a grounded ESD strap and
handle the modules by their carrier edges only. To ground the ESD strap, make sure that it is attached to an
earth ground, a grounded chassis, or a grounded rack.
Caution
Keep the shipping container in case the chassis requires shipping in the future.
Tip
The switch is thoroughly inspected before shipment. If any damage occurred during transportation or any
items are missing, contact your customer service representative immediately.
Note
To inspect the switch, follow these steps:
Step 1 Compare the shipment to the equipment list provided by your customer service representative and verify that you have
received all items.
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 the packing slip)
• Model and serial number of the damaged unit
• Description of damage
Installing the Chassis
6
Installing the Chassis
Unpacking and Inspecting the Chassis

• Effect of damage on the installation
• Photos of the damaged shipping containers and damaged product
Step 3 For dual direction airflow switches, check to be sure that all of the fan and power supply modules have the same airflow
direction.
• Port-side intake airflow direction indicated with burgundy coloring
• Port-side exhaust airflow direction indicated with blue coloring
Installing the Chassis in a Four-Post Rack
This section describes the installation of the Cisco Nexus 9408 platform switch, into a four-post rack, using
the N9K-C9400-RMK rack-mount kit.
Before moving or lifting the chassis, follow these guidelines:
• Ensure that there is adequate space around the switch for servicing and airflow.
• Never attempt to lift an object that is too heavy for you to lift by yourself.
• Ensure that you have solid footing. Distribute the weight of the switch is evenly between your feet.
• Lift the switch slowly, keeping your back straight. Lift with your legs, not with your back. Bend at the
knees, not at the waist.
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.
Warning
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
Installing the Chassis
7
Installing the Chassis
Installing the Chassis in a Four-Post Rack

Statement 164—Lifting Requirement
people are required to lift the heavy parts of the product. To prevent injury, keep your back straight and lift
with your legs, not your back.
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
Step 1 Attach two front-mount brackets to the sides of the chassis as follows:
a) Align the two holes in one side of a front-mount bracket to the holes on the left or right side of the chassis as shown
in the following figure.
Installing the Chassis
8
Installing the Chassis
Installing the Chassis in a Four-Post Rack

Figure 1: Aligning and Attaching Front-Mount Brackets to the Chassis
M4 x 6-mm screws2Front rack-mount bracket1
b) Use M4 x 6 mm screws to attach the bracket to the chassis and tighten each screw to 12 in-lb (1.36 N·m) of torque.
c) Repeat Steps 1a and 1b to attach the other front-mount bracket to the other side of the chassis.
Step 2 Align the bottom-support rails so that they form a shelf for the chassis.
The bottom-support rails are not interchangeable. Use the one marked with [R] for the right, and with [L]
for the left side of the rack.
Note
Installing the Chassis
9
Installing the Chassis
Installing the Chassis in a Four-Post Rack

Figure 2: Aligning the Bottom-Support Rails
Bottom-support rail (2)1
Step 3 Attach the bottom-support rails on the rack as follows:
a) Position an expanding set of bottom-support brackets on the rack with each end touching a vertical mounting rail on
the front and rear of the rack as shown in the following figure.
Installing the Chassis
10
Installing the Chassis
Installing the Chassis in a Four-Post Rack

Figure 3: Positioning the Bottom-Support Rails
The bottom-support brackets (2)2Screws holding the bottom-support bracket to the rack1
b) Holding the bottom-support rail level, attach the rail to the front and rear vertical mounting rails using four
customer-supplied screws that are appropriate for the rack (use two screws for each vertical mounting rail), and
tighten each screw to the appropriate torque setting for that screw.
Typically, you use one of the following types of screws and the associated torque settings when tightening them:
• M4 screws—Use 12 in-lb (1.36 N·m) of torque.
• M6 screws—Use 40 in-lb (4.5 N·m) of torque.
• 10-32 screws— Use 20 in-lb (2.26 N·m) of torque.
If the rack requires another type of screw, use the appropriate torque setting for that type of screw.
c) Repeat Steps 3a and 3b to attach the other expanding bottom-support rail to the other side of the rack at the same
level as the attached bottom-support rail.
Verify that the two sets of bottom-support rails are level with each other before going to the next step.
Note
Step 4 Install the chassis in the rack as follows:
a) Slide the power supply end of the chassis onto the installed bottom-support rails as shown in the following figure.
When sliding the chassis onto the bottom-support rails, proceed slowly and cautiously so that you don’t
damage the switch or support rails.
Note
Installing the Chassis
11
Installing the Chassis
Installing the Chassis in a Four-Post Rack

When you have fully pushed the chassis all the way onto the bottom-support rails, the chassis stops when the
front-mount brackets touch the front vertical mounting rack.
Figure 4: Sliding the Chassis onto the Bottom-Support Rails
Rack-mount screw1
b) Use screws that are appropriate for the rack to attach the front-mount brackets to the rack.
Typically, you use one of the following types of screws and the associated torque settings when tightening them:
• M4 screws—Use 12 in-lb (1.36 N·m) of torque.
• M6 screws—Use 40 in-lb (4.5 N·m) of torque.
• 10-32 screws— Use 20 in-lb (2.26 N·m) of torque.
If the rack requires another type of screw, use the appropriate torque setting for that type of screw.
Grounding the Chassis
The switch chassis is automatically grounded when you properly install the switch in a grounded rack with
metal-to-metal connections between the switch and rack.
Installing the Chassis
12
Installing the Chassis
Grounding the Chassis

You can alternatively ground the chassis (this is required if the rack is not grounded) by attaching a
customer-supplied grounding cable to the chassis grounding pad and the facility ground.
The location of the grounding pad on each switch can be found in the Overview section.
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
The switch is grounded when you connect the chassis and the power supplies to the earth ground in the
following ways:
• You connect the chassis (at its grounding pad) to the data center ground. If the rack is fully-bonded and
grounded, you can ground the switch by connecting it to the rack.
The chassis ground connection is active even when the power supply modules
have not been grounded or connected to the switch.
Note
Statement 1024—Ground Conductor
This equipment must be grounded. 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
Statement 1252—Equipment Grounding
This equipment must be grounded. To reduce the risk of electric shock, the power cord, plug, or combination
must be connected to a properly grounded electrode, outlet, or terminal.
Warning
Statement 1046—Installing or Replacing the Unit
When installing or replacing the unit, the ground connection must always be made first and disconnected last
Warning
Before you begin
Before you can ground the chassis, you must have a connection to the earth ground for the data center building.
If you installed the switch chassis into a bonded rack (see the rack manufacturer's instructions for more
Installing the Chassis
13
Installing the Chassis
Grounding the Chassis

information) that now has a connection to the data center earth ground, you can ground the chassis by installing
it into the rack. Otherwise, you must connect the chassis grounding pad directly to the data center ground.
Step 1 Use a wire-stripping tool to remove approximately 0.75 inches (19 mm) of the covering from the end of the grounding
wire.
Step 2 Insert the stripped end of the grounding wire into the open end of the grounding lug, and use a crimping tool to crimp
the lug to the wire (see Callout 2 in the following figure). Verify that the ground wire is securely attached to the grounding
lug by attempting to pull the wire out of the crimped lug.
Figure 5: Grounding the Chassis
Two M4 screws used to secure the grounding lug to the
chassis
3Chassis grounding pad1
Grounding cable, with 0.75 in. (19 mm) of insulation
stripped from one end, inserted into the grounding lug
and crimped in place
2
Step 3 Secure the grounding lug to the chassis grounding pad with two M4 screws (see Callouts 1 and 3 in the previous figure),
and tighten the screws to 12 in lb (1.36 N·m) of torque.
Step 4 Prepare the other end of the grounding wire and connect it to an appropriate grounding point in your site to ensure an
adequate earth ground for the switch. If the rack is fully bonded and grounded, connect the grounding wire as explained
in the documentation provided by the vendor for the rack.
Starting the Switch
Statement 1005—Circuit Breaker
This product relies on the building’s installation for short-circuit (overcurrent) protection. To reduce risk of
electric shock or fire, ensure that the protective device is rated not greater than:
Warning
To power up the switch, follow these steps:
Installing the Chassis
14
Installing the Chassis
Starting the Switch

Before you begin
• Verify that the switch is fully installed and secured to a rack.
• Verify that the switch is adequately grounded to the facility earth ground or to a grounded rack.
• Verify that all of the fan and power supply modules are installed in the chassis. If the chassis has less
than 4 power supplies, there must be a blank module (NXA-PS-BLANK) in the open power supply slot
to maintain the designed airflow.
Step 1 If the switch has AC power supplies, connect those power supplies to an AC power source as follows:
a) Verify that the AC power source is turned off at the circuit breaker.
b) Plug the power cable into the power receptacle on the power supply.
c) Attach the other end of the power cable to the AC power source.
d) Turn on the power at the circuit breaker.
e) Verify that the power supply is functioning by making sure that the OK LED turns green and the FAULT LED is
off.
Step 2 Listen for the fans; they should begin operating when the power cable is plugged in.
Step 3 After the switch boots, verify that the following LEDs are on:
• Power supply LED—lit and green
If not green, try removing the module part way from its slot and reinstalling it.
• Fan LED—lit and green
If not green, try removing the module part way from its slot and reinstalling it.
•System Status LED—lit and green (if this LED is orange or red, then one or more environmental monitors is reporting
a problem.)
• Link LEDs for the Ethernet connector—Off
Installing the Chassis
15
Installing the Chassis
Starting the Switch

Installing the Chassis
16
Installing the Chassis
Starting the Switch