Cisco Nexus 93180LC-EX User manual

Installing the Switch Chassis
•Safety, page 1
•Installation Options with Racks and Cabinets, page 2
•Airflow Considerations, page 2
•Installation Guidelines, page 2
•Unpacking and Inspecting the Switch, page 3
•Installing the Switch, page 4
•Grounding the Chassis, page 9
•Starting the Switch, page 11
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
This warning symbol means danger. You are in a situation that could cause bodily injury. Before you
work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar with
standard practices for preventing accidents. Use the statement number provided at the end of each warning
to locate its translation in the translated safety warnings that accompanied this device.
SAVE THESE INSTRUCTIONS
Warning
Statement 1017—Restricted Area
This unit is intended for installation in restricted access areas. A restricted access area can be accessed
only through the use of a special tool, lock and key, or other means of security.
Warning
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Statement 1030—Equipment Installation
Only trained and qualified personnel should be allowed to install, replace, or service this equipment.
Warning
Installation Options with Racks and Cabinets
You can install the switch in the following types of racks using the rack-mount kit shipped with the switch:
•Open EIA rack
•Perforated EIA cabinet
The rack or cabinet that you use must meet the requirements listed in General Requirements for Cabinets and
Racks.
The rack-mount kit enables you to install the switch into racks of varying depths. You can use the rack-mount
kit parts to position the switch with easy access to either the port connections end of the chassis or the end of
the chassis with the fan and power supply modules. For instructions on how to install the rack-mount kit, see
the Installing the Switch, on page 4.
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:
•Record equipment and installation information in the forms presented in Appendix E, "Site Planning
and Maintenance Records" as you install and configure the switch.
•Ensure that there is adequate clearance space around the switch to allow for servicing the switch and
for adequate airflow.
•Ensure that you are positioning the switch in a rack so that it takes in cold air from the cold aisle and
exhausts air to the hot aisle. If there is blue coloring on the fan modules, the switch is configured for
port-side exhaust airflow and you must position the module side of the switch in a cold aisle. If there is
burgundy coloring on the fan modules, the switch is configured for port-side intake airflow and you
must position the port side of the switch in a cold aisle.
•Ensure that the chassis can be adequately grounded. If the switch is not mounted in a grounded rack,
we recommend connecting both the system ground on the chassis directly to an earth ground.
•Ensure that the site power meets the power requirements listed in Switch Power Input Requirements. If
available, you can use an uninterruptible power supply (UPS) to protect against power failures.
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Installation Options with Racks and Cabinets

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.
◦HVAC/HVDC power supplies require the following:
◦HVAC input voltage range of 230 to 277 VAC with a frequency of 50 to 60 Hz
◦HVDC input voltage range of -240 to -380 VDC
◦DC power supplies require the following:
◦DC input voltage range of –48 to -60 VDC nominal (self-ranging, –40 to –60 VDC)
◦DC line input current (steady state) of 23 A peak at –48 VDC
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
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:
•Additional kits (includes the Accessory Kit). See the Additional Kits appendix for detailed information.
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Unpacking and Inspecting the Switch

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
Step 3 Check to be sure that each of the power supply and the fan tray modules have the expected direction of airflow as follows:
•Port-side intake airflow modules
◦Red (fan modules and power supplies)
•Port-side exhaust airflow modules
◦Blue (fan modules and power supplies)
•Dual-direction airflow power-supply modules
◦White (see the color of the fan modules to determine the airflow direction used)
All power supplies and fan modules must have the same direction of
airflow.
Note
Installing the Switch
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.
•Make sure that the switch rack-mount kit includes the following parts:
◦Front rack-mount brackets (2)
◦Rear rack-mount brackets (2)
◦Slider rails (2)
◦M4 x 0.7 x 8-mm Phillips countersink screws (12)
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Installing the Switch Chassis
Installing the Switch

•The rack is installed and secured to its location.
Step 1 Install two front-mount brackets to the switch as follows:
a) Determine which end of the chassis is to be located in the cold aisle as follows:
•If the switch has port-side intake modules (fan modules with burgundy coloring), position the switch so that its
ports will be in the cold aisle.
•If the switch has port-side exhaust modules (fan modules with blue coloring), position the switch so that its fan
and power supply modules will be in the cold aisle.
If the power supply modules have white coloring, look at the fan modules to determine the airflow direction
for the switch.
Note
b) Position a front-mount bracket so that four of its screw holes are aligned to the screw holes on the side of the chassis.
You can align any four of the holes in the front rack-mount bracket to four of the six screw holes on the side
of the chassis (see the two ways to mount these brackets in following figure). The holes that you use depend
on the requirements of your rack and the amount of clearance required for interface cables (3 inches [7.6
mm] minimum) and module handles (1 inch [2.5 mm] minimum).
Note
Front rack-mount bracket aligned to the module end
of the chassis
5Front rack-mount bracket aligned to the port end of
the chassis
1
Four M4 screws used to attach the bracket to the
chassis
6Four M4 screws used to attach the bracket to the
chassis
2
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Installing the Switch

Two M4 screws used to attach the bracket to the
chassis
7Rear rack-mount guide aligned to the module end of
the chassis
3
Rear rack-mount guide aligned to the port end of the
chassis
8Two M4 screws used to attach the bracket to the
chassis
4
c) Secure the front-mount bracket to the chassis using four M4 screws and tighten each screw to 12 in-lb (1.36 N·m)
of torque.
d) Repeat Step 1 for the other front rack-mount bracket on the other side of the switch and be sure to position that bracket
the same distance from the front of the switch.
Step 2 Install the two rear rack-mount brackets on the chassis as follows:
a) Align the two screw holes on a rear rack-mount bracket to the middle two screw holes in the remaining six screw
holes on a side of the chassis. If you are aligning the guide to holes that are near the port connections end of the
chassis, see Callout 3 in the previous figure. Otherwise, see Callout 7 in the previous figure.
b) Attach the guide to the chassis using two M4 screws (see Callout 4 or 8 in the previous figure). Tighten the screws
to 12 in-lb (1.36 N·m) of torque.
c) Repeat Step 2 for the other rear rack-mount bracket on the other side of the switch.
Step 3 If you are not installing the chassis into a grounded rack, you must attach a customer-supplied grounding wire to the
chassis as explained in Grounding the Chassis, on page 9. If you are installing the chassis into a grounded rack, you
can skip this step.
Step 4 Install the slider rails on the rack or cabinet as follows:
a) Determine which two posts of the rack or cabinet you should use for the slider rails. Of the four vertical posts in the
rack or cabinet, two will be used for the front mount brackets attached to the easiest accessed end of the chassis, and
the other two posts will have the slider rails.
b) Position a slider rail at the desired level on the back side of the rack and use two 12-24 screws or two 10-32 screws,
depending on the rack thread type, to attach the rails to the rack (see the following figure). Tighten 12-24 screws to
30 in-lb (3.39 N·m) of torque and tighten 10-32 screws to 20 in-lb (2.26 N·m) of torque.
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Installing the Switch Chassis
Installing the Switch

Two customer-supplied 12-24 or 10-32 screws used
to attach each slider rail to the rack
2Slider rail with screw holes aligned to screw holes in
rack
1
c) Repeat Step 3 to attach the other slider rail to the other side of the rack.
To make sure that the slider rails are at the same level, you should use a level tool, tape measure, or carefully count
the screw holes in the vertical mounting rails.
Step 5 Insert the switch into the rack and attach it as follows:
a) Holding the switch with both hands, position the two rear rack-mount brackets on the switch between the rack or
cabinet posts that do not have slider rails attached to them (see the following figure).
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Installing the Switch Chassis
Installing the Switch

Front-mount brackets.3Align the two rear rack-mount bracket guides with
the slider rails installed in the rack.
1
Mounting rails on rack or cabinet posts.4Slide the rack-mount guides onto the slider rails until
the front rack-mount brackets come in contact with
the front rack-mount rails.
2
b) Align the two rear rack-mount guides on either side of the switch with the slider rails installed in the rack. Slide the
rack-mount guides onto the slider rails, and then gently slide the switch all the way into the rack until the front
rack-mount brackets come in contact with two rack or cabinet posts.
If you attached a grounding cable to the chassis, you will need to bend one of the rack-mount rails slightly
to allow the grounding lug to go behind the rail.
Note
c) Holding the chassis level, insert two screws (12-24 or 10-32, depending on the rack type) in each of the two front
rack-mount brackets (using a total of four screws) and into the cage nuts or threaded holes in the vertical rack-mounting
rails (see the following figure).
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Installing the Switch Chassis
Installing the Switch

Mounting rails on rack or cabinet posts.3Fasten the chassis to the front of the rack with two
12-24 or 10-32 screws on each side.
1
Front-mount bracket.2
d) Tighten the 10-32 screws to 20 in-lb (2.26 N·m) or tighten the 12-24 screws to 30 in-lb (3.39 N·m).
Step 6 If you attached a grounding wire to the chassis grounding pad, connect the other end of the wire to the facility ground.
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.
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.
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Grounding the Chassis

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 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.
Step 1 Use a wire-stripping tool to remove approximately 0.75 inch (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.
2 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
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Grounding the Chassis