Cisco Nexus 93180LC-EX Manuale utente

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

Cisco Nexus 93180LC-EX ACI Mode Hardware Installation Guide

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.

Cisco Nexus 93180LC-EX ACI Mode Hardware Installation Guide

Installing the Switch Chassis

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.

Cisco Nexus 93180LC-EX ACI Mode Hardware Installation Guide

Installing the Switch Chassis

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)

Cisco Nexus 93180LC-EX ACI Mode Hardware Installation Guide

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

Four M4 screws used to attach the bracket to the

chassis

6Four M4 screws used to attach the bracket to the

chassis

Cisco Nexus 93180LC-EX ACI Mode Hardware Installation Guide

Installing the Switch Chassis

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

Rear rack-mount guide aligned to the port end of the

chassis

8Two M4 screws used to attach the bracket to the

chassis

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.

Cisco Nexus 93180LC-EX ACI Mode Hardware Installation Guide

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

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).

Cisco Nexus 93180LC-EX ACI Mode Hardware Installation Guide

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.

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.

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).

Cisco Nexus 93180LC-EX ACI Mode Hardware Installation Guide

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.

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.

Cisco Nexus 93180LC-EX ACI Mode Hardware Installation Guide

Installing the Switch Chassis

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

Cisco Nexus 93180LC-EX ACI Mode Hardware Installation Guide

Installing the Switch Chassis

Grounding the Chassis

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