· You have all the items listed in the packing list, and the switch was not damaged during shipment. If anything is damaged or missing, contact the sales agent or customer representative immediately.

For regulatory compliance and safety information, see "Regulatory compliance and safety information."

Installing an impedance carrier (optional)

An impedance carrier is shipped with each S12508 and S12518 switch. You can install the impedance carrier at the rear of the chassis (where a ventilation panel is located) to block the airflow from entering the rear of the chassis.

Install an impedance carrier where switches adopt front to rear airflow.

To install an impedance carrier:

1. Loosen the captive screws on the ventilation panel to remove it.

2. Install the impedance carrier, and fasten the captive screws on the impedance carrier.

Figure 2 Installing an impedance carrier

Installing a chassis air filter (optional)

Chassis air filters are installed at the air intake vents to prevent dust from entering the chassis. Chassis air filters of the S12500 switches are optional. You can order them as needed.

If you have ordered chassis air filters, H3C recommends you to install the air filters before mounting the switch to the rack.

· S12508—A chassis air filter is available at both front and rear of the switch. For the installation procedures, see "Installing an air filter on an S12508."

· S12518—The air filter is located at the rear of the chassis. For the installation procedures, see "Installing an air filter on an S12518."

Installing an air filter on an S12508

To install the front air filter on an S12508:

1. Holding the notches of the front plastic panel at the bottom part of the chassis, and gently pull the plastic panel out.

2. Unpack the air filter and attach it to rear of the plastic panel, making sure the installation holes on the air filter align with the screw holes on the plastic panel. Then attach the air filter to the plastic panel with screws.

3. Attach the plastic panel back to the chassis.

Figure 3 Installing the front air filter

To install the rear air filter on an S12508:

1. Loosen the captive screws on the ventilation panel and remove it.

2. Unpack the air filter and attach it to where the ventilation panel was located, and then fasten the captive screws on the air filter.

Figure 4 Installing the rear air filter

(1) Ventilation panel

(2) Rear air filter

Installing an air filter on an S12518

1. Use a Phillips screwdriver to loosen the screws at both sides of the plastic panel and remove the panel.

2. Insert the air filter into the rear of the chassis along the slide rails, and then fasten the screws at both sides of the air filter.

Figure 5 Installing an air filter

Installing an expansion cable management bracket (optional)

Each S12508 and S12518 switch provides two types of chassis cable management brackets. You can select either type as needed.

· Cable management brackets—Shipped with the switch. For more information, see "Product overview."

· Expansion cable management brackets—Upper cable management bracket with a mark, and lower cable management bracket with no mark. They are installed in the same positions as the cable management brackets shipped with the switch except that they can route more cables.

To install expansion cable management brackets, remove the cable management brackets shipped with the switch first.

Installation preparation

1. Wear an ESD-preventive wrist strap and make sure the wrist strap is well grounded.

2. Unpack the expansion cable management brackets.

IMPORTANT:

· Make sure no filler panel or card is installed on the front panel of the switch before you remove or install a lower cable management bracket.

· Keep the removed chassis panel and cable management brackets for future use.

Installation procedure

Each S12500 switch has keyhole standoffs on its cable management bracket and keyholes on the chassis for attaching the cable management bracket to the chassis. See Figure 6.

Figure 6 Keyhole standoff and keyhole

(1) Keyhole standoff

(2) Keyhole

Installing an upper expansion cable management bracket

1. Holding the notches on both sides of the chassis panel above the upper cable management bracket, gently remove the panel.

2. Pressing the two sides of the front panel, pivot the power frame front panel upward.

3. Loosen the fastening screws on the upper cable management bracket with a Phillips screwdriver.

4. Align the keyhole standoffs on the rear of the cable management bracket with the keyholes on the chassis and remove the cable management bracket.

5. Align the keyhole standoffs on the upper expansion cable management bracket (with a mark) with the keyholes on the chassis.

6. Push the expansion cable management bracket forward until it makes close contact with the chassis. Then pull the expansion cable management bracket downwards a little until the keyhole standoff fits into the keyhole on the chassis.

7. Unpack the screws come with the expansion cable management bracket and fasten them with a Phillips screwdriver to attach the expansion cable management bracket to the chassis.

8. Close the power frame front panel.

Figure 7 Installing an upper expansion cable management bracket

Installing a lower expansion cable management bracket

1. Remove the filler panel or card on the front panel. For how to remove them, see "Replacement procedures."

2. Loosen the fastening screws on the lower cable management bracket with a Phillips screwdriver.

3. Align the keyhole standoffs on the rear of the lower cable management bracket with the keyholes on the chassis and remove the cable management bracket.

4. Align the keyhole standoffs on the lower expansion cable management bracket (with no mark) with the keyholes on the chassis.

5. Push the expansion cable management bracket forward until it makes close contact with the chassis. Then pull the expansion cable management bracket downwards until the keyhole standoff fits into the keyhole on the chassis.

6. Unpack the screws come with the expansion cable management bracket and fasten them with a Phillips screwdriver to attach the expansion cable management bracket to the chassis.

7. Install the removed filler panel or card. For more information, see "Installing a card."

For illustration of the installation procedure for a lower cable management bracket, see Figure 7.

Installing the switch in a rack

CAUTION:

When moving the switch, hold the handles at both sides of the chassis. Do not hold the plastic panel of the chassis, the handle of the fan tray, the handle of the back cover of the chassis, or the air vents of chassis. Any attempt to carry the switch with these parts may cause equipment damage or even bodily injury.

Installation preparation

Confirm the following preparations before starting installation:

· The rack is sturdy and securely grounded.

· There is sufficient clearance of 0.8 m (2.62 ft) around the rack for heat dissipation and installation.

· There is no debris inside or around the rack.

· The total height of the switches to be installed is no higher than the height of the rack and enough clearance is reserved for cable routing.

Installing slide rails and cage nuts to the rack

Besides slide rails, you can use a rack shelf to support the switch. This document describes how to install slide rails only.

To ensure correct installation, use industry-standard slide rails or rack shelves. Slide rails or rack shelves are not provided with the switch. Prepare them yourself, or order them from H3C.

Installing slide rails

Before installing the switch to the rack, install slide rails to the rack. If the rack has slide rails, skip this section.

Before installing the slide rails, verify that the slide rails can support the weight of the switch. For the weight of the S12500 switch and hardware components, see "Appendix A Technical specifications."

The appearance and installation methods of slide rails depend on the slide rail types.

This section uses a 19-inch rack as an example to describe the installation procedures. The rack unit (RU) (44.45 mm, or 1.75 in) measures the height of rack posts. As shown in Figure 8, each 1 RU has three mounting holes with center-to-center separations of 15.88 mm (0.63 in), 15.88 mm (0.63 in), and 12.70 mm (0.5 in). When installing the slide rails, make sure the bottom edge of the slide rails aligns with the middle of the narrowest separation between mounting holes.

To install the slide rails:

1. Mark the position of the slide rail on the right rack posts.

Make sure the clearance above the slide rail is sufficient for the switch. For the dimensions of the S12500 switch, see "Appendix A Technical specifications."

2. Align the screw holes on the two sides of the slide rail with the corresponding mounting holes on the right rack posts, and then fasten the screws.

3. Repeat steps 1 and 2 to install the other slide rail to the left rack posts.

Keep the two slide rails at the same height so that the switch can be placed evenly.

Figure 8 Locating the installation position of the slide rail

Installing cage nuts

Before mounting the chassis to the rack, install cage nuts to the front square-holed brackets of the rack.

To install cage nuts to the rack:

1. Face the front of the rack.

2. Align the mounting bracket with the left rack post, making sure its bottom edge and the slide rail are level. Mark the positions of the cage nuts on the rack post according to the mounting holes on the mounting bracket. (Each mounting hole on the mounting bracket corresponds to one cage nut.)

3. Insert one edge of a cage nut into the hole.

4. Compress the other edge of the cage nut to push the cage nut fully into the hole.

5. Repeat steps 2, 3, and 4 to install cage nuts to all the marked positions on the right rack post.

Figure 9 Installing the cage nuts

Installing the mounting brackets

Attach the mounting brackets onto the left and right sides of the switch.

Figure 10 Installing the mounting brackets (for the S12504)

Figure 11 Installing the mounting brackets (for the S12508 and S12518)

Mounting the switch in the rack

Before you mount the switch in the rack, make sure you have installed slide rails or a rack shelf on the rack for supporting the switch.

To maximize the stability of the rack, mount the heaviest switch at the bottom of the rack when you install multiple switches on the rack.

To mount the switch in the rack:

1. Use several persons to place the switch on the slide rails or rack shelf and slide the switch into the rack until the mounting brackets on the switch touch the front rack posts.

2. Attach the mounting brackets to the rack posts with mounting screws. See Figure 12.

Figure 12 Installing the switch in a standard 19-inch rack

NOTE:

If the screw holes on the mounting brackets cannot align with the cage nuts on the rack, verify that the bottom edge of the slide rail aligns with the middle of the narrowest metal area between mounting holes and that the cage nuts are installed in the correct holes.

Verifying the installation

After the installation is completed, check the installation against the following checklist. Make sure all check results are positive.

Table 1 Installation checklist

Item	Result		Remarks
Item	Yes	No	Remarks
The mounting brackets are firmly attached to the switch.
The switch is sturdy and installed in the right position.
The mounting brackets on the switch are firmly attached to the rack.

Installing the switch on a workbench

You can install the switch on a clean, sturdy workbench or on the floor.

Installation preparation

Before placing the switch on a workbench or on the floor, confirm the following preparations:

· The workbench or floor is sturdy enough to support the weight of the chassis and its accessories.

· The workbench or floor is reliably grounded.

Installation procedures

IMPORTANT:

Allow 0.8 m (2.62 ft) of clearance around the switch for heat dissipation.

To install the switch:

1. Hold the two sides of the switch and steadily move the switch to the workbench.

2. Lift the switch a little higher than the workbench and put it on the workbench.

3. Install the mounting brackets on the switch and fasten the screws, as shown in Figure 13 (optional).

Each circled area in Figure 13 shows two rows of installation holes. You can select either row of a circled area to install the mounting brackets.

Figure 13 Installing the mounting brackets

(1) Mounting bracket installation holes

(2) Mounting bracket

4. Attach the switch to the workbench or ground with L-shaped brackets. See Figure 14.

Figure 14 Installing L-shaped brackets

(1) L-shaped bracket

(2) Wall anchor

(3) Mounting screw

Grounding the switch

WARNING!

For the safety of operators and equipment, securely ground the switch. Make sure the resistance reading between the switch chassis and the ground is less than 1 ohm.

Most racks are equipped with a grounding strip. You can connect the yellow-green grounding cable of the switch to the grounding strip.

CAUTION:

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

Use the supplied grounding cable (CAT 6 cable with dual-hole OT terminals).

To connect the grounding cable:

1. Remove the two grounding screws from the switch chassis.

2. Use the grounding screws to attach one end of the grounding cable to the chassis.

3. Connect the other end of the grounding cable to the grounding strip of the rack in the same way.

Figure 15 Connecting the grounding cable

If there is no grounding point on the rack, you can attach the grounding cable to a grounding strip. The installation procedures are similar.

Installing a power supply

The S12500 switches supports both AC and DC power supply. You can select either AC or DC power supplies as needed. For how to connect power cords, see "Connecting power cords."

Installation preparation

CAUTION:

· Hold a power entry module (PEM) or power supply by the bottom when moving it. Never attempt to lift a PEM or power supply with its handle because the handle is not designed to support weight. Doing so might result in bodily injury or damage to the module.

· When inserting or removing a power supply, verify that the switch is sturdy. To prevent bodily injury, avoid tipping the switch chassis.

· When hot-plugging power supplies, make sure the insertion interval is no less than 30 seconds.

To prepare for installation:

1. Wear an ESD-preventive wrist strap and make sure it is properly grounded.

2. Remove the blank panel (if any) from the slot to be used.

3. Remove the power frame cover.

Installing a DC power supply

1. Rotate the power frame cover up with both hands.

2. Pull the clip at the bottom left corner of the power supply to the left to open the power supply panel.

3. Insert the power supply slowly into the slot until it is firmly seated in the slot.

4. Close the panel of the power supply, press the clip to lock the power supply in position, and close the power frame cover.

Figure 16 Installing a power supply

Installing an AC power supply

To install an AC power supply, follow these steps:

· Installing a PEM

· Installing an AC power supply

Installing a PEM

1. Loosen the screws on the filler panel of the PEM slot with a Phillips screwdriver to remove the filler panel.

2. Insert a PEM slowly along the slide rails until it touches the backplane connector.

3. Use the M3 screws supplied with the PEM to attach the PEM to the switch chassis, and fasten the screws with a Phillips screwdriver.

Figure 17 Installing a PEM

NOTE:

Gently insert the PEM into the chassis to avoid damaging the connector at the end of the PEM.

Installing an AC power supply

IMPORTANT:

· Make sure the number of power supplies is sufficient for the switch to operate properly.

· Each receptacle on the PEM corresponds to a power supply slot. To enable an AC power supply to work, provide power supply to the relevant receptacle.

· Distribute power supplies in the upper and lower frames evenly on the S12518.

The procedures for installing an AC power supply are similar to installing a DC power supply. For more information, see "Installing a DC power supply."

Installing a fan tray

CAUTION:

· The fan trays are heavy. Do not try to move a fan tray by yourself.

· Hold a fan tray by the bottom when moving it. Never attempt to lift a fan tray with its handle because the handle is not designed to support weight. Doing so might result in bodily injury or damage to the module.

The S12504 has one fan tray. Each of the S12508 and the S12518 has two fan trays. They are installed in the same way.

To install a fan tray:

1. Wear an ESD-preventive wrist strap and make sure it is properly grounded.

2. Unpack the fan tray.

3. Remove the blank panel from the slot to be used.

4. Lift the fan tray and push it into the slot until it is firmly seated in the slot.

5. Fasten the captive screws on the front panel of the fan tray.

Figure 18 Installing a fan tray (for the S12504)

Figure 19 Installing a fan tray (for the S12508 and S12518)

Installing a card

CAUTION:

The LST1XP32REB1 and LST1XP32REC1 have three circled areas marked with HAND OPERATION AREA (see Figure 20) on their print circuit board. You can touch these areas when holding the card. Touching any area outside these three areas might result in damage to the LPU.

On an S12504, install at least one MPU, one LPU, and three switching fabric modules. On an S12508 or S12518, install at least one MPU, one LPU, and seven switching fabric modules.

The S12500 does not support intermixing of the MPU, LPU, and switching fabric modules.

Use one of the following positions to install the card:

· Install MPUs, Ethernet interface cards, and OAA cards at the front of the switch chassis. Slot 0 and Slot 1 are for MPUs and other slots (slots 2 to 5 for the S12504, slots 2 to 9 for the S12508, and slots 2 to 19 for the S12518) are for Ethernet interface cards and OAA cards.

· Install switching fabric modules in the switching fabric module slots (slots 6 to 9 for the S12504, slots 10 to 18 for the S12508, and slots 20 to 28 for the S12518) at the rear of the chassis.

Figure 20 HAND OPERATION AREA sign on LST1XP32REB1/LST1XP32REC1

You can install MPUs, LPUs, and switching fabric modules in a similar way. This section describes how to install an MPU as an example.

Installation preparation

1. Wear an ESD-preventive wrist strap and make sure it is properly grounded.

2. Remove the blank panel (if any) from the slot to be used.

3. Unpack the card to be installed.

NOTE:

· Keep the removed the blank panel and protective box properly for future use.

· All the cards for the S12500 are hot-swappable.

Installation procedure

IMPORTANT:

· Fasten the screws of each card right after you insert it.

· To avoid damage to a card, do not use excessive force when installing and removing the card.

To install a card:

1. Remove the protective box before installing an MPU:

2. Wear an ESD-preventive wrist strap and then loosen the captive screws that attach the MPU to the protective box with a Philips screwdriver.

3. Pull the MPU out of the protective box gently, as shown in Figure 21.

Figure 21 Removing the protective box

4. Move the ejector levers on the front panel of the MPU outwards, hold up the MPU by one hand without touching any electronic components on the MPU, and hold the front panel by the other hand to push the MPU into the slot along the slide rails slowly.

5. Push the ejector levers inward to ensure close contact between the MPU and the backplane.

6. Position the screws into the holes and fasten them with a screwdriver to attach the MPU.

Figure 22 Installing an MPU (for the S12504)

Figure 23 Installing an MPU (for the S12508 and S12518)

Connecting power cords

Follow these guidelines before connecting power cords:

· For lightning protection, the AC power should be led through an external lightning device into an S12500 switch. For more information, see "Appendix D Lightning protection."

· Make sure the power switch on the power frame is in the OFF position.

· For personal and switch safety, do not connect the power cords with the power. Power off the grounding strip, connect the power cords, power on the grounding strip, and then power on the switch.

Connecting an AC power cord

Each socket on a PEM (LSTM2PEMC6) corresponds to a power supply slot. Sockets numbered 1 through 6 provide power for the power supplies in slots 1 through 6, respectively. If slot 1 is installed with a power supply, the number 1 receptacle on the PEM must be connected to a power source with an AC power cord to make the power supply operate properly.

CAUTION:

Typically 10 A busbars are available in the equipment room but the PEM on the S12500 (LSTM2PEMC6) requires a 16 A power cord (AC), so you need to use a 16 A busbar, and make sure the AC power supply system can provide enough power. For AC power cords used in different countries or regions, see "Appendix A Technical specifications."

To connect power cords:

1. Remove the strain-relief screws of the power cord retention clip, and remove the retention clip.

2. Insert the connector of the AC power cord into the PEM receptacle.

3. Install the retention clip to the connector and fasten the screws to lock the power connector.

4. Connect the other end of the AC power cord to the power source.

Figure 24 Connecting the AC power cord

Connecting a DC power cord

Six pairs of wiring terminals (marked PSR1 through PSR6) are available on the DC grounding strip of the S12500 switches. The wiring terminals correspond to the power supplies 1 through 6, respectively. The power source supplies power to the switch through the wiring terminals. If slot 1 is installed with a power supply, the wiring terminals marked PSR1 must be connected to the power source with a DC power cord to make the power supply operate properly.

CAUTION:

A plastic protection cover is installed in front of the grounding strip to protect operators from being shocked. Remove the protection cover before connecting power cords and then install the protection cover in time.

To connect a DC power cord:

1. Remove the protection cover from the power supply.

2. Loosen the fastening screw on the wiring terminal marked with RTN(+) with an M6 wrench, and remove the screw, spring washer, and flat washer.

3. Connect one end of the black DC power cord marked with "–" to the RTN(+) terminal on the power supply, install the flat washer, spring washer, and fasten the screw.

4. Connect one end of the blue DC power cord marked with "–" to the negative terminal (–) on the power supply; connect the "–" end of the grounding cable to the terminal marked with PE on the rightmost of the grounding strip.

Figure 25 Connecting the DC power cord to the grounding strip

5. Connect the other end of the DC power cord to the power source:

a. Connect the other end of the black DC power cord to the RTN (+) terminal that provides power to the switch.

b. Connect the other end of the blue DC power cord to the negative terminal (–) that provides a power supply to the switch.

c. Connect the other end of the grounding cable to a reliable grounding point.

6. Put the protection cover on the wiring terminals.

Figure 26 Installing the protection cover

Verifying the installation

WARNING!

An S12504 has one power switch, an S12508 has one power switch, and an S12518 has two power switches. Make sure you have turned off the power before checking the installation to avoid bodily injury and switch damage.

After the installation is completed, verify the installation against the following list. Be sure that all check results are positive.

Table 2 Installation checklist

Item	Result		Remarks
Item	Yes	No	Remarks
The grounding cable is correctly grounded.
Fan trays are correctly installed and make close contact with the backplane.
Power supplies are correctly installed and have close contact with the frames.
The power switch is off (the power switch is at the OFF position).
Power cords are correctly connected.
MPUs are correctly installed and have close contact with the backplane.
LPUs are correctly installed and have close contact with the backplane.
Switching fabric modules are correctly installed and have close contact with the backplane.

H3C S12500 Routing Switch Series Installation Guide-6W115

Installing an upper expansion cable management bracket

Installing a lower expansion cable management bracket

Installing slide rails and cage nuts to the rack

Installing a power supply

Installation preparation

Installing a DC power supply

Installing an AC power supply

Installing an AC power supply

Connecting an AC power cord

Connecting a DC power cord

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