To prevent electrostatic discharge (ESD) damage, always wear an ESD wrist strap when working with the switch or any component. Make sure the wrist strap makes good skin contact and is reliably grounded.

Figure 1-1 Attaching an ESD wrist strap

(1) ESD jack (with an ESD sign)

Examining the installation site

The switch must be used indoors. To ensure correct operation of the switch and to prolong its service lifetime, the installation site must meet the load-bearing, temperature, humidity, cleanliness, EMI, grounding, power supply, ventilation, and space requirements. Reserve a minimum clearance of 1.2 m (3.94 ft) between the switch and walls or other devices.

For more information, see H3C S12500X-2L Switch Installation Guide.

Installation tools and equipment

No installation tools and equipment are provided with the switch. Prepare them yourself as required.

2 Installing the switch

Switch dimensions

Figure 2-1 Switch dimensions

(1) Power supply handle	(2) Mounting bracket
(3) Cable management bracket

Rack requirements

Table 2-1 Rack requirements

Switch dimensions	Rack requirements
· Height—133 mm (5.24 in) (3 RU). · Width—440 mm (17.32 in). · Chassis depth—895 mm (35.24 in) · Total depth—1013 mm (39.88 in) ¡ 104 mm (4.09 in) from the rack-facing surface of the mounting brackets to the front ends of the cable management brackets ¡ 909 mm (35.79 in) from the rack-facing surface of the mounting brackets to the power supply handles at the chassis rear	· A minimum of 1.1 m (3.61 ft) in depth (recommended) · A minimum of 130 mm (5.12 in) from the front rack post to the front door · A minimum of 950 mm (37.40 in) from the front rack post to the rear door

Switch dimensions

Rack requirements

· Height—133 mm (5.24 in) (3 RU).

· Width—440 mm (17.32 in).

· Chassis depth—895 mm (35.24 in)

· Total depth—1013 mm (39.88 in)

¡ 104 mm (4.09 in) from the rack-facing surface of the mounting brackets to the front ends of the cable management brackets

¡ 909 mm (35.79 in) from the rack-facing surface of the mounting brackets to the power supply handles at the chassis rear

· A minimum of 1.1 m (3.61 ft) in depth (recommended)

· A minimum of 130 mm (5.12 in) from the front rack post to the front door

· A minimum of 950 mm (37.40 in) from the front rack post to the rear door

NOTE:

As a best practice, use a rack that has a single door at the front.

Slide rail requirements

Table 2-2 Slide rail requirements

Max. chassis weight (fully configured)	Applicable slide rails
Max. chassis weight (fully configured)	Slide rail model	Adjustment range
70 kg (154.32 lb)	LSVM1BSR10	630 mm to 900 mm (24.80 in to 35.43 in)

NOTE:

Load-bearing flanges of the LSVM1BSR10 slide rails are at the bottom so the slide rails do not occupy rack space.

Installing slide rails

1. Read the signs on the slide rails to identify the front and rear ends of the slide rails.

2. As shown in Figure 2-2, mark the position on the rack post for installing the slide rail.

a. Insert the locating pin at the bottom of the slide rail into the lowest square hole within the 2U space on the rack post.

b. Mark the uppermost square hole and lowermost square hole for installation on the rack post.

c. Mark the square holes at the same height on the other three rack posts. Make sure the slide rail installation positions are at the same height on the four rack posts.

3. Install cage nuts in the marked square holes on each rack post except for the uppermost marked square holes on the front rack posts. See callout 3 in Figure 2-2.

4. Perform the following task to secure the slide rail to the rack posts:

a. Align the installation holes on the front end of the slide rail with the cage nuts on the front rack post.

b. Compress the slide rail, making sure the locating pins at both ends of the slide rail are inserted into the lowest square holes within the 2U space on the rack posts.

c. Use the provided M6 screws to secure the slide rail to the rack posts.

The recommended torque is 30 kgf-cm (2.94 Nm).

Use only the two lowermost cage nuts on each front rack post. Reserve the uppermost cage nut on each front rack post for attaching mounting brackets.

Figure 2-2 Installing slide rails

(1) Locating pin	(2) Mark the cage nuts installation holes
(3) Install cage nuts in the marked square holes	(4) Use the provided M6 screws to secure a slide rail to the rack post

Installing cage nuts for attaching mounting brackets

Before mounting the chassis in the rack, install cage nuts on the front rack posts for attaching the mounting brackets by performing the following steps:

1. As shown in Figure 2-3, determine the cage nut installation holes and then mark them on the front rack post.

2. Install cage nuts in the marked square holes on the front rack posts. If you have installed screws in the two uppermost holes, remove them first.

Figure 2-3 Installing cage nuts

Mounting the switch in a rack

CAUTION:

· Hold the chassis handles to move the switch. Do not hold the handle of a fan tray, a power supply, or a module to move the switch. Any attempt to carry the switch with these parts might cause equipment damage or even bodily injury.

· After you place the switch on the slide rails, do not leave go of your hands immediately because this might tip the switch, damaging the switch or even causing bodily injury.

· Do not place your hand into any slot when you move the chassis.

To mount the switch in the rack:

1. Face the rear of the chassis towards the front of the rack.

2. Move the switch by holding the chassis handles.

3. Place the switch on the slide rails from the front of the rack and slide the switch along the guide rails until the mounting brackets on the switch touch the front rack posts tightly, as shown by callout 1 in Figure 2-4.

4. Use the provided M6 screws provided with the switch to attach the mounting brackets to the rack posts. The recommended torque is 30 kgf-cm (2.94 Nm).

If the mounting holes in the mounting brackets cannot align with the cage nuts on the rack, verify the following items:

¡ The bottom edge of the slide rail aligns with the middle of the narrower metal area between holes.

¡ The cage nuts are installed in the correct holes.

Figure 2-4 Mounting the switch in the rack

(1) Slide the chassis into the rack
(2) Use the provided M6 screws to secure the mounting brackets to the rack

Grounding the switch

CAUTION:

· Grounding the switch reliably is crucial to lightning protection and EMI protection. Ground the switch reliably before you use it.

· Use the grounding cable (yellow-green grounding cable) provided with the switch.

· Connect the grounding cable to the earthing system in the equipment room. Do not connect it to a fire main or lightning rod.

A grounding strip at the installation site is required to ground the switch.

To connect the grounding cable to the grounding strip:

1. Unpack the grounding cable.

The grounding cable provided with the switch is compliant with the NEBS standards. The two-hole grounding lug of the grounding cable is used for connecting the chassis. The ring terminal of the grounding cable is used for connecting the grounding strip.

2. Remove the grounding screws from the grounding holes at the rear of the chassis.

A grounding sign is provided with the grounding holes, as shown by callout 1 in Figure 2-5.

3. Use grounding screws to attach the two-hole grounding lug of the grounding cable to the chassis.

The recommended torque is 30 kgf-cm (2.94 Nm).

4. Connect the ring terminal of the grounding cable to a grounding post of the grounding strip, and fasten the grounding cable to the grounding strip with the hex nut.

Figure 2-5 Connecting the grounding cable to a grounding strip

(1) Grounding sign	(2) Use grounding screws to attach the two-hole grounding lug to the grounding point
(3) Grounding strip	(4) Grounding post	(5) Ring terminal	(6) Hex nut

3 Installing removable components

This section describes the installation procedures for the supervisor engine units (SEUs, also called MPUs), interface modules, fan trays, and power supplies. For the compatibility matrix between these modules and the switch models, see H3C S12500X-2L Switch Installation Guide.

WARNING!

Long-time exposure to strong air flow might cause discomfort. As a best practice, do not stand close to the air outlet vents while the switch is operating. If you must be next to the switch on the air outlet vent side for an extended period, avoid the air flow or take other protective measures.

CAUTION:

For good ventilation of the switch, install filler panels in the empty module and power supply slots.

Attaching an ESD wrist strap

To prevent ESD damage, always wear an ESD wrist strap when working with any component of the switch. Make sure the wrist strap makes good skin contact and is reliably grounded. See Figure 1-1 for attaching an ESD wrist strap.

Installing and removing SEUs

CAUTION:

· If you are not to install an SEU in an SEU slot, keep the filler panel in the slot.

· When you install an SEU, avoid damaging the connectors on the SEU.

You can install one SEU, or two SEUs for redundancy on the switch. If you are to install one SEU, install it in either of the SEU slots.

Installing an SEU

1. As shown by callout 1 in Figure 3-1, remove the filler panel from the target SEU slot.

Keep the removed filler panel secure for future use.

2. As shown by callout 2 in Figure 3-1, press the latch on the SEU to release the ejector lever. Rotate outward the ejector lever to the outmost.

3. As shown by callout 3 in Figure 3-1, orient the SEU with the upside up. Hold the SEU by the front panel with one hand and support the bottom with the other. Push the SEU steadily into the slot along the guide rails until it has firm contact with the slot.

Keep the SEU parallel to the slot to avoid touching other components in the chassis.

4. As shown by callout 4 in Figure 3-1, rotate inward the ejector lever until the latch locks the ejector lever in place.

Figure 3-1 Installing an SEU

Removing an SEU

1. As shown by callout 1 in Figure 3-2, press the latch to release the ejector lever.

2. Hold the ejector lever to pull the SEU part way out of the slot. See callout 2 in Figure 3-2.

3. Holding the SEU by the front panel with one hand and supporting the bottom with the other, pull the SEU steadily out of the slot along the guide rails.

Keep the SEU parallel to the slot to avoid touching other components in the chassis.

Figure 3-2 Removing an SEU

Installing and removing interface modules

Removing the protective blank panel

WARNING!

The protective blank panel is heavy. To avoid bodily injury, use both hands to remove it.

The switch comes with a protective blank panel installed over the interface module slots to protect the switch from damage during shipment.

To remove the protective blank panel:

1. Remove the screws that secure the protective blank panel to the switch. See callout 1 in Figure 3-3.

2. As shown by callout 2 in Figure 3-3, remove the protective blank panel with both hands.

Keep the removed protective blank panel and screws secure for future use.

Figure 3-3 Removing the protective blank panel

Installing an interface module

The ejector levers of the interface modules and the ejector lever pillow blocks have purple marks.

To install an interface module:

1. Orient the interface module with the lettering on it upward.

2. As shown by callout 1 in Figure 3-4, hold the interface module by the front panel with one hand and support its bottom with the other. Slide the interface module steadily into the target slot along the guide rails.

Keep the interface module parallel to the slot to avoid touching other components in the chassis.

3. As shown by callout 2 in Figure 3-4, fully open the ejector levers when most of the interface module is inserted into the slot.

4. Push the interface module until the brakes on the ejector levers touch the slot edges tightly.

5. As shown by callout 3 in Figure 3-4, continue to push the interface module by its middle part on the front panel until you cannot move it.

6. As shown by callout 4 in Figure 3-4, push the ejector levers inward until they come in close contact with the panel.

7. As shown by callout 5 in Figure 3-4, fasten the captive screws to secure the interface module to the chassis.

The recommended torque is 5 kgf-cm (0.49 Nm).

Figure 3-4 Installing an interface module

Removing an interface module

1. As shown by callout 1 in Figure 3-5, loosen the captive screws on the interface module

2. As shown by callout 2 in Figure 3-5, open the ejector levers fully.

3. As shown by callout 3 in Figure 3-5, pull the interface module part way out of the slot. Holding the interface module by the front panel with one hand and supporting the bottom with the other, pull the interface module steadily out of the slot along the guide rails.

To avoid touching other components in the chassis, keep the interface module parallel to the slot while pulling it out.

Figure 3-5 Removing an interface module

Installing a filler panel in an empty interface module slot

An interface module slot filler panel is provided with the switch. If you are not to install an interface module in an interface module slot, install the filler panel in the slot.

To install a filler panel in an empty interface module slot:

1. As shown by callout 1 in Figure 3-6, align the two captive screws on the filler panel with the installation holes on the slot.

2. As shown by callout 2 in Figure 3-6, fasten the captive screws on the filler panel.

The recommended torque is 5 kgf-cm (0.49 Nm).

Figure 3-6 Installing the filler panel in an empty interface module slot

Installing cable management brackets

CAUTION:

To avoid device damage, press the spring tab when you remove a cable management bracket.

The cable management brackets are installed on the two sides of the interface module slots. As a best practice, install cable management brackets after you have installed interface modules.

As shown in Figure 3-7, insert the cable management bracket end that has a spring tab into the cable management bracket hole until the bracket has close contact with the hole.

Figure 3-7 Installing a cable management bracket

(1) Spring tab on the cable management bracket
(2) Align the cable management bracket with the bracket hole

Installing and removing fan trays

Follow these restrictions and guidelines when you install a fan tray:

· The switch has two fan tray slots: FAN1 and FAN2. Install two fan trays on the switch.

· To prevent dust from entering the chassis, keep the fan trays in position if the switch is not in use.

· The fan tray is hot swappable. Follow these guidelines when you hot swap a fan tray:

¡ Ensure electricity safety.

¡ Replace a fan tray only when the other fan tray is operating correctly.

¡ To prevent dust from entering the chassis, keep the failed fan tray in position before the replacement.

· To install a fan tray in slot FAN1, orient the fan tray so that the LED is on the left side of the front panel. To install a fan tray in slot FAN2, orient the fan tray so that the LED is on the right side of the front panel.

· To avoid damaging the fan tray, use both hands when installing or removing a fan tray.

· When you hot swap a fan tray, only one fan tray is operating and it automatically increases the fan rotation speed and makes louder noise. Take protection measures such as wearing an earmuff or earplug. In addition, make good preparation before the hot swapping to minimize the operation time.

Installing fan trays

The following procedure installs a fan tray in the FAN1 slot:

1. Unpack the fan tray.

2. Orient the fan tray correctly. Align the fan tray with the fan tray slot.

3. Holding the fan tray handle with one hand and supporting the bottom of the fan tray with the other, insert the fan tray part way into the slot, as shown by callout 1 in Figure 3-8.

Keep the fan tray as steady as possible while inserting it into the slot.

4. Squeezing the captive screw at the air vents side with one hand and holding the fan tray handle with the other, push the fan tray fully into the slot.

5. Fasten the captive screws on the fan tray.

The recommended torque is 5 kgf-cm (0.49 Nm).

Figure 3-8 Installing a fan tray

Removing a fan tray

The following procedure removes the fan tray from the FAN1 slot:

1. As shown by callout 1 in Figure 3-9, loosen the captive screws on the fan tray.

2. Squeezing the captive screw at the air vents side with one hand and holding the fan tray handle, pull the fan tray outward until it is disengaged from the chassis. Remove the fan tray after the fan stops rotating.

Figure 3-9 Removing a fan tray

Installing and removing power supplies

Installing a power supply

CAUTION:

The switch comes with a filler panel in each power supply slot. If you are not to install a power supply in a slot, install a filler panel in the slot to prevent dust from entering the chassis.

The installation procedure is the same for AC and DC power supplies. The following procedure installs an AC power supply.

To install a power supply:

1. Put your forefinger into the hole of the filler panel and pull out the filler panel along the guide rails. See callout 1 in Figure 3-10.

2. Correctly orient the power supply.

If you install the power supply in a left power supply slot, make sure the latch is above the handle. If you install the power supply in a right power supply slot, make sure the latch is below the handle.

3. Hold the handle of the power supply with one hand, pull downward the latch with your thumb, and support the bottom of the power supply with the other.

4. Slide the power supply along the guide rails into the slot and release the latch. The latch automatically locks the power supply in place.

Figure 3-10 Installing a power supply

Removing a power supply

CAUTION:

Before removing a power supply, disconnect the power cord from it.

The removal procedure is the same for AC and DC power supplies. The following procedure removes an AC power supply.

To remove a power supply:

1. Hold the handle on the power supply with one hand and pull downward the latch. See callout 1 in Figure 3-11.

2. Pull the power supply part out of the slot. Holding the bottom of the power supply with the other hand, pull the power supply out of the slot slowly. See callout 2 in Figure 3-11.

Figure 3-11 Removing a power supply

Connecting the power cord

CAUTION:

· Power on the switch after you have completed installation.

· Make sure each power cord has a separate circuit breaker.

· Turn off the circuit breaker before you connect the power cord.

Connecting the AC power cord

1. Plug the AC power cord connector into the AC input receptacle of the power supply.

2. Use a removable cable tie or self-adhesive cable tie (provided with the power supply) to secure the power cord to the handle of the power supply.

3. Connect the other end of the power cord to an AC power source.

Figure 3-12 Using a removable cable tie to secure the power cord to the switch

Connecting the DC power cord

WARNING!

· Before connecting the DC power cord, make sure the circuit breakers for both the positive lead (+) and the negative lead (–) are turned off.

· To avoid electrical shock, a plastic cover is installed over the terminal blocks. Remove the cover when you connect the DC power cord and install the cover in time after you connect the DC power cord.

To connect the DC power cord:

1. Remove the plastic cover over the wiring terminals, and use a Phillips screwdriver to remove the M5 screws.

The recommended torque is 20 kgf-cm (1.96 Nm).

2. Connect the wire marked with the negative polarity symbol (–) to the negative terminal (–) on the power supply. Connect the wire marked with the positive polarity symbol (+) to the positive terminal (+) on the power supply.

3. Fasten the M5 screws to secure the wires and then install the plastic cover.

4. Connect the other end of the power cord to a DC power source.

5. Examine the input status LED (IN OK) on the power supply. If the LED is green, the power cord is successfully connected. If the LED is off, examine the installation, troubleshoot the problems, and try again until the LED is on.

Figure 3-13 Connecting the DC power cord

(Optional) Installing a DC input terminal block

You can order an extension cable and a DC input terminal block to supply power to the switch if the following situations exist:

· The power distribution cabinet is far away from the switch.

· The power cord size does not apply to the power distribution cabinet.

· Terminals on the power distribution cabinet do not support customization.

A DC input terminal block provides eight pairs of terminals. Each pair has the blue terminal for reconnecting the negative lead and the white terminal for reconnecting the positive lead. A maximum of eight DC power line reconnections are supported. The terminals support a wire with a size of 10 mm² to 35 mm² (0.02 sq.in to 0.05 sq.in).

To attach a DC input terminal block to a rack:

1. Install cage nuts on the rack posts.

2. Use screws to attach the DC input terminal block to the rack.

Figure 3-14 Attaching a DC input terminal block to a rack

To connect power wires to a DC input terminal block:

1. As shown by callout 1 in Figure 3-15, insert the wires of the extension cable into the upper-row terminals on the DC input terminal block, and insert the other ends of the wires into the terminals on the power distribution cabinet.

2. As shown by callout 2 in Figure 3-15, insert the wires of the DC power cord into the lower-row terminals on the DC input terminal block, and insert the other ends of the wires into the terminal block on the switch.

Figure 3-15 Connecting wires to a DC input terminal block

(Optional) Installing transceiver modules

CAUTION:

· To prevent particles from entering the ports, install the dust plugs that come with the interface modules in the QSFP+/QSFP28 ports if you are not to install transceiver modules or cables in the ports.

Installing a QSFP+/QSFP28 transceiver module

CAUTION:

· Read the following instructions before you install an QSFP+/QSFP28 transceiver module. Failure to follow these instructions might cause damage to the module.

· Do not remove the dust plug from the QSFP+/QSFP28 transceiver module if you are not to connect an optical fiber to the module.

· Before you install an QSFP+/QSFP28 transceiver module, remove the optical fiber (if any) from it.

To install a QSFP+/QSFP28 transceiver module:

1. Unpack the module.

Do not touch the golden plating of the module.

2. Pivot the clasp of the module up. Holding the module, gently push the module into the slot until it has firm contact with the slot, as shown in Figure 3-16.

¡ For a module that uses a plastic pull latch, skip this step.

¡ If you cannot hold the module by its two sides because of high module density, press the module on its head end to push it in.

Figure 3-16 Installing a QSFP+/QSFP28 module

Connecting a QSFP+/QSFP28 cable

CAUTION:

When you connect a fiber cable, make sure the bend radius of the cable is not less than eight times the fiber diameter.

The cables are hot swappable.

Use QSFP+ cables to connect QSFP+ ports and QSFP28 cables to connect QSFP28 ports.

To connect a QSFP+/QSFP28 cable:

1. Unpack the cable.

2. Plug the cable connector into the port. Make sure the cable connector is correctly oriented.

4 Cabling recommendations

Routing network cables

The cable management brackets are installed on the two sides of the interface module section. As a best practice, route network cables from the left and right sides.

Routing power cords

When you route power cords, take consideration of the layout of the equipment room, including the locations of the power distribution cabinet, AC power receptacles, and lightning protection box. Place all re-connecting facilities, such as receptacles, at the rack bottom (Do not place them at a location out of the rack and easy to reach.)

The power supplies of the switch are located at the two sides of the rear panel. As a best practice, route power cords from left and right sides of the switch.

5 Accessing the switch

The first time you access the switch you must use a console cable to connect a console terminal, for example, a PC, to the console port on the switch.

Connecting the console cable

IMPORTANT:

· Identify the mark on the console port and make sure you are connecting to the correct port.

· The serial ports on PCs do not support hot swapping. If the switch has been powered on, connect the console cable to the PC before connecting to the switch, and when you disconnect the cable, first disconnect from the switch.

To connect the console cable:

1. Plug the DB-9 female connector of the console cable to the serial port of the PC.

2. Plug the RJ-45 connector of the console cable to the console port of the switch.

Figure 5-1 Connecting a terminal to the console port

Verification before login

Before you log in to the switch, perform the following tasks:

· Verify that the switch has been correctly installed.

· Verify that all modules have been correctly installed.

· Verify that all the network cables, fibers, power cord, and grounding cables have been correctly connected.

· Verify that the voltage of the power source is as required.

· Verify that the console cable has been correctly connected, the terminal or PC used for configuration has started, and the configuration parameters have been set.

· Verify that the switch has been powered on.

Viewing switch startup information

After the switch is powered on, the configuration terminal output startup information. The output information varies by software versions.

The following shows a sample output you will see when the switch starts up:

System is Starting....

Press Ctrl+D to access BASIC-BOOTWARE MENU

Press Ctrl+T to access BOOTWARE DIAG-TEST MENU

Booting Normal Extend Bootware

[Warning]Use default bootware config!

****************************************************************************

* *

* BootWare, Version 1.02 *

* *

****************************************************************************

Compiled Date : Jul 4 2019

Memory Type : DDR4 SDRAM

Memory Size : 16384MB

Memory Speed : 2133MHz

flash Size : 7296MB

CPLD 1 Version : 0.0

CPLD 2 Version : 0.0

CPLD 3 Version : 0.0

PCB Version : Ver.A

BootWare Validating...

Press Ctrl+B to access EXTENDED-BOOTWARE MENU...

Loading the main image files...

Loading file flash:/SYSTEM.bin..............................................

............................................................................

....................................Done.

Loading file flash:/BOOT.bin................................................

............................................................................

................Done.

Image file flash:/BOOT.bin is self-decompressing............................

............................................................................

.............................................Done.

System image is starting...

Line aux1/0 is available.

Press ENTER to get started.

Press Enter at the prompt. When the prompt <Sysname> appears, you can configure the switch.

After the switch finishes startup, verify the following items:

· The cooling system is working, and you can hear fan rotating noise and feel air being blown out.

· The LEDs on the SEUs show that the system is operating correctly. For more information about LEDs, see H3C S12500X-2L Switch Installation Guide.

H3C S12500X-2L Switch Quick Start Guide-5PW101

Connecting a QSFP+/QSFP28 cable

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