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Unpack and Mount the QFX5120 Switch

Unpack the QFX5120 Switch

We ship QFX5120 switches in a cardboard carton, secured with foam packing material.

CAUTION:

QFX5120 switches are maximally protected inside the shipping carton. Do not unpack the switches until you are ready to mount the switch.

To unpack the switch:

  1. Move the shipping carton to a staging area as close to the installation site as possible, but where you have enough room to remove the system components.
  2. Position the carton so that the arrows marked on the carton are pointing up.
  3. Open the top flaps on the shipping carton.
  4. Pull out the packing material holding the switch in place.
  5. Verify the parts received against the inventory on the label attached to the carton.
  6. Save the shipping carton and packing materials in case you need to move or ship the switch later.

Parts Inventory (Packing List) for a QFX5120 Switch

The switch shipment includes a packing list. Check the parts you receive with the switch against the items in the packing list. The packing list specifies the part number and provides a description of each part in your order. The parts shipped depend on the switch model you order.

If any part in the packing list is missing, contact your customer service representative or contact Juniper customer care from within the U.S. or Canada by telephone at 1-888-314-5822. For international-dial or direct-dial options in countries without toll-free numbers, see https://www.juniper.net/support/requesting-support.html .

Table 1 lists the parts and their quantities as in the standard packing list for a QFX5120 switch.

Table 1: Inventory of Components Provided with a QFX5120 Switch

Component

Quantity

Switch

1

Fan modules

QFX5120-32C

6 preinstalled

QFX5120-48T, QFX5120-48Y, and QFX5120-48YM

5 preinstalled

Power supplies

2 (AC or DC) preinstalled

AC power cords appropriate for your geographical location for AC-powered models

2

Two-post rack mount kit

QFX5120-32C

(QFX5120-32C-RMK, QFX5K-2PST-RMK)

  • Front mounting brackets—2

  • Side mounting rails—2

  • Flat head M4X8 screws to attach the front mounting brackets and side mounting rails to the switch chassis—20

  • Rear mounting (L-shaped) brackets—2

  • Pan head M4X8 screws to attach the rear mounting brackets to the side mounting rails—2

Four-post rack mount kit

QFX5120-48T, QFX5120-48Y, and QFX5120-48YM

  • JNP-4PST-RMK-1U-E (shipped with the switch)

  • EX-4PST-RMK (seperately orderable)

JNP-4PST-RMK-1U-E

  • A pair of front and rear mounting rails

  • A pair of mounting brackets

  • 16 flat head M4 x 6mm Phillips screws

EX-4PST-RMK

  • Front mounting bracket assembly for mounting the switch flush with the front posts of a rack—2

    (The front mounting bracket assembly is made up of a side rail to which an L-shaped bracket is attached.)

  • Recessed mounting brackets for mounting the switch in a recessed position from the front posts of a rack—2

  • Flat head 4x6-mm Phillips screws for attaching the front mounting brackets to the chassis—12

  • Flat head 4-40 Phillips screws for attaching recessed mounting brackets to the side rails—6

  • Rear mounting brackets—2

Documentation Roadmap

1

End User License Agreement

1
Note:

We no longer include a DB-9 to RJ-45 cable or a DB-9 to RJ-45 adapter with a CAT5E copper cable as part of the device package. If you require a console cable, you can order it separately with the part number JNP-CBL-RJ45-DB9 (DB-9 to RJ-45 adapter with a CAT5E copper cable).
Note:

You must provide the appropriate mounting screws for mounting the switch on a rack or a cabinet.

All the rack mount kits are separately orderable.

Table 2: Rack Mount Kits for QFX5120-32C, QFX5120-48T, QFX5120-48Y, QFX5120-48YM
Model Rack Mount Kit

QFX5120-32C

 QFX5120-32C-RMK, QFX5K-2PST-RMK

QFX5120-48YM

  • JNP-4PST-RMK-1U-E (shipped with the switch)

  • EX-4PST-RMK (seperately orderable)

QFX5120-48T

  • JNP-4PST-RMK-1U-E (shipped with the switch)

  • EX-4PST-RMK (seperately orderable)
QFX5120-48Y

  • JNP-4PST-RMK-1U-E (shipped with the switch)

  • EX-4PST-RMK (seperately orderable)

Register Products—Mandatory to Validate SLAs

Register all new Juniper Networks hardware products and changes to an existing installed product using the Juniper Networks website to activate your hardware replacement service-level agreements (SLAs).

CAUTION:

Register product serial numbers on the Juniper Networks website. Update the installation base data if any addition or change to the installation base occurs or if the installation base is moved. Juniper Networks is not responsible for not meeting the hardware replacement service-level agreement for products that do not have registered serial numbers or accurate installation base data.

Register your product(s) at https://tools.juniper.net/svcreg/SRegSerialNum.jsp.Update your installation base at https://www.juniper.net/customers/csc/management/updateinstallbase.jsp.

Mount a QFX5120-32C Switch on a Four-Post Rack

Before mounting a QFX5120-32C switch:

Ensure that you have the following parts and tools available:

  • Number 2 Phillips (+) screwdriver—not provided

  • Eight sscrews to secure the mounting brackets to the rack—not provided

  • Electrostatic discharge (ESD) grounding strap—not provided

  • Front mounting brackets—2 (provided with the rack mount kit)

  • Side mounting rails—2 (provided with the rack mount kit)

  • Flat head M4X8 screws to attach the front mounting brackets and side mounting rails to the switch chassis—20 (provided with the rack mount kit)

  • Rear mounting (L-shaped) brackets—2 (provided with the rack mount kit)

  • Pan head M4X8 screws to attach the rear mounting brackets to the side mounting rails—2 (provided with the rack mount kit)

You can mount a QFX5120-32C switch on four posts of a 19-in. rack or in a cabinet that contains a four-post 19-in. rack by using a rack mount kit. (The remainder of this topic uses rack to mean rack or cabinet.)

Note:

One person must be available to lift the switch while another person secures the switch to the rack.
CAUTION:

If you are mounting multiple units on a rack, mount the heaviest unit at the bottom of the rack, and then mount the other units from the bottom of the rack to the top in decreasing order of the weight of the units.

To mount a QFX5120-32C switch:

  1. Place the switch on a flat, stable surface.
  2. Wrap and fasten one end of the ESD wrist strap around your bare wrist, and connect the other end of the strap to a site ESD point.
  3. Align the front mounting brackets along the side panel of the switch such that the front of the bracket is flush with the front panel of the switch chassis. Insert the flat head M4X8 screws for attaching the front mounting brackets into the aligned holes on the chassis and tighten the screws (see Figure 1).
    Figure 1: Attach the Front Mounting Brackets to a QFX5120-32C Switch Chassis Attach the Front Mounting Brackets to a QFX5120-32C Switch Chassis
  4. Align the side mounting rails along the side panel of the switch. Insert the flat head M4X8 screws for attaching the side mounting rails into the aligned holes on the chassis and tighten the screws (see Figure 2).
    Figure 2: Attach the Side Mounting Rails to a QFX5120-32C Switch Chassis Attach the Side Mounting Rails to a QFX5120-32C Switch Chassis
  5. Decide which end of the switch you want to place at the front of the rack. Position the switch so that the F2B labels on the fan modules are facing the cold aisle, or the B2F labels on the fan modules are facing the hot aisle.
  6. Have one person grasp both sides of the switch, lift the switch, and position it in the rack, aligning the holes of the mounting brackets with the threaded holes in the front post of the rack. Align the bottom hole in both the mounting brackets with a hole in each rack rail, making sure that the chassis is level.
  7. Have a second person secure the front of the switch to the rack by using the screws appropriate for your rack. Tighten the screws (see Figure 3).
    Figure 3: Secure the QFX5120-32C Switch to the Front Posts of a Rack Secure the QFX5120-32C Switch to the Front Posts of a Rack
  8. Slide the rear mounting (L-shaped) brackets on to the side mounting rails (see Figure 4).
  9. Ensure that the chassis is level. Align the holes of the rear mounting brackets with the threaded holes in the rear post of the rack. Align the bottom hole in both the mounting brackets with a hole in each rack rail. Align the bottom hole in both the rear mounting brackets with the bottom hole in the front mounting brackets.
  10. Secure the rear mounting brackets to the rear post of the rack by using screws appropriate for your rack (see Figure 4). Tighten the screws.
    Figure 4: Secure the QFX5120-32C Switch to the Rear Post of the Rack by Using the Rear Mounting Brackets Secure the QFX5120-32C Switch to the Rear Post of the Rack by Using the Rear Mounting Brackets
  11. Secure the rear mounting (L-shaped) brackets to the side mounting rails by using the pan head M4X8 screws provided (see Figure 4). Tighten the screws.
  12. Your switch is now installed on a four-post rack.

Mount a QFX5120-32C Switch on a Two-Post Rack

Before you mount a QFX5120-32C switch on a two-post rack:

Ensure that you have the following parts and tools available:

  • Number 2 Phillips (+) screwdriver—not provided

  • Eight screws to secure the mounting brackets to the rack—not provided

  • Electrostatic discharge (ESD) grounding strap—not provided

  • Two-post rack mounting bracket for mounting the switch on a two-post rack—2 (provided with the two-post rack mount kit)

  • Flat head 4x6-mm Phillips screws for attaching the two-post rack mounting brackets to the chassis—8 (provided with the two-post rack mount kit)

You can mount a QFX5120 switch on four posts of a four-post 19-in. rack or in a cabinet that contains a four-post 19-in. rack, flush with the front posts, by using a four-post rack mount kit. (The remainder of this topic uses rack to mean rack or cabinet.) You can mount QFX5120-48T, QFX5120-48Y, and QFX5120-48YM switches in a recessed position inside a four-post rack by using the recessed mounting brackets. You can also mount QFX5120-48YM switches on a two-post rack by using a separately orderable two-post rack mount kit.

Note:

One person must be available to lift the switch while another person secures the switch to the rack.
CAUTION:

If you are mounting multiple units on a rack, mount the heaviest unit at the bottom of the rack, and then mount the other units from the bottom of the rack to the top in decreasing order of the weight of the units.

To mount a QFX5120-32C switch on a two-post rack:

  1. Place the switch on a flat, stable surface.
  2. Wrap and fasten one end of the ESD wrist strap around your bare wrist, and connect the other end of the strap to a site ESD point.
  3. Align the two-post rack mounting bracket (provided with the two-post rack mount kit) along the side panel of the switch.
  4. Insert the flat head 4x6-mm Phillips screws for attaching the two-post rack mounting brackets (provided with the two-post rack mount kit) into the aligned holes on the chassis. Tighten the screws (see Figure 5) .
    Figure 5: Attach the Two-Post Mounting Brackets to a QFX5120-32C Switch Attach the Two-Post Mounting Brackets to a QFX5120-32C Switch
  5. Decide which end of the switch you want to place at the front of the rack. Position the switch so that the AIR IN labels on the fan modules are facing the cold aisle, or the AIR OUT labels on the fan modules are facing the hot aisle.
  6. Have one person grasp both sides of the switch, lift the switch, and position it in the rack, aligning the holes of the mounting brackets with the threaded holes in the posts of the rack. Align the bottom hole in both the mounting brackets with a hole in each rack rail, making sure that the chassis is level.
  7. Have a second person secure the switch to the rack by using the screws appropriate for your rack. Tighten the screws (see Figure 6).
    Figure 6: Secure the QFX5120-32C Switch to the Two-Post Rack Secure the QFX5120-32C Switch to the Two-Post Rack
  8. Your switch is now installed on a two-post rack (see Install the QFX5120-32C Switch to the Two-Post Rack.)
    Figure 7: Mount the QFX5120-32C Switch to the Two-Post Rack Mount the QFX5120-32C Switch to the Two-Post Rack

Mount a QFX5120-48T, QFX5120-48Y, or QFX5120-48YM Switch in a Rack or Cabinet by Using the JNP-4PST-RMK-1U-E Rack Mount Kit

You can mount QFX5120-48T,QFX5120-48Y, or QFX5120-48YM switches on a square hole or threaded hole four-post 19-in. racks using the partial tool less JNP-4PST-RMK-1U-E rack mount kit which is available as a spare.

JNP-4PST-RMK-1U-E rack mount kit consists of the following parts:

  • A pair of front and rear mounting rails

  • A pair of mounting brackets

  • 16 flat head M4 x 6mm Phillips screws

A four-post installation evenly supports the device by all four corners.

Mount the Device by Using the JNP-4PST-RMK-1U-E Rack Mount Kit On a Square Hole Rack

Ensure that you have the following tools and parts available:

  • An ESD grounding strap—not provided.

  • Number 2 Phillips (+) screwdriver—not provided

  • A pair of front and rear mounting rails that attach to the rack posts—provided with the rack mount kit

  • A pair of mounting brackets and 16 flat head M4 x 6mm Phillips screws. These brackets attach to the device if not pre-installed—provided with the rack mount kit

To mount the device on four posts in a rack by using the JNP-4PST-RMK-1U-E rack mount kit:

  1. Wrap and fasten the ESD grounding strap to your bare wrist and an connect the other end of the strap to the ESD point on the device.
  2. Assemble the mounting rails.
    1. Slide the rear floating bracket into the front bracket. See Figure 8.
      Figure 8: Assemble the Mounting Rails Assemble the Mounting Rails
    2. Mounting rails assembled. See Figure 9.
      Figure 9: Front and Rear Rails Assembled Front and Rear Rails Assembled
  3. Attach the mounting rails to the rack.
    1. Align the guide blocks of the rear mounting rails with the rear-post holes. Pull the rear mounting rails toward the front of the rack to lock the rails in place. You will hear a click sound when the latch locks into the corresponding rack holes. See Figure 10.
      Figure 10: Install the Rear Floating Rails Install the Rear Floating Rails
    2. Move the latch lock on the front mounting rails to open position, slide the front mounting rails, and insert the guide blocks into the front rack posts. See Figure 11.
      Figure 11: Install the Front Mounting Rails Install the Front Mounting Rails
    3. Push the lock latch to the locked position. See Figure 12.
      Figure 12: Front Mounting Rails Lock Latch Front Mounting Rails Lock Latch
    4. Visually ensure that the front and rear latches are locked into place on the mounting rails. See Figure 13.
      Figure 13: Mounting Rails Installed and Locked Mounting Rails Installed and Locked
  4. Attach mounting brackets to the device if not pre-installed. If your device already has the mounting brackets pre-installed than skip this step and move to the next step.
    1. Align the holes on the mounting bracket with the screw holes on the side panel of the chassis.
    2. Insert the flat head M4 x 6mm Phillips screws to attach the mounting bracket into the aligned holes on the chassis (see Figure 14). Tighten the screws.
      Figure 14: Attach the Mounting Brackets to the Device Attach the Mounting Brackets to the Device
  5. Position the device in such a manner that the AIR OUT labels on components are next to the hot aisle.
  6. Grasp both sides of the device, lift it, and position the device such that the mounting rails slide into the channels of the mounting brackets. See Figure 15.
    Figure 15: Slide the Device into the Rack Slide the Device into the Rack
  7. Tighten the two thumbscrews to secure the device. See Figure 16.
    Figure 16: Tighten the Thumb Screws Tighten the Thumb Screws

Mount the Device by Using the JNP-4PST-RMK-1U-E Rack Mount Kit On a Threaded Hole Rack

Ensure that you have the following tools and parts available:

  • An ESD grounding strap—not provided

  • Number 2 Phillips (+) screwdriver—not provided

  • A pair of front and rear mounting rails that attach to the rack posts—provided with the rack mount kit

  • A pair of side mounting brackets and 16 flat head M4 x 6mm Phillips screws. These brackets attach to the device if not pre-installed—provided with the rack mount kit

To mount the device on four posts in a threaded hole rack by using the JNP-4PST-RMK-1U-E rack mount kit:

  1. Wrap and fasten the ESD grounding strap to your bare wrist and connect the other end of the strap to the ESD point on the device.
  2. Assemble the mounting rails.
    1. Remove the guide blocks from the front mounting rails by loosening the screws and preserve them for later use. See Figure 17.
      Figure 17: Remove Guide Blocks from Front Mounting Rail Remove Guide Blocks from Front Mounting Rail
    2. Remove the guide blocks from the rear floating rails by loosening the screws and washers. Preserve the guide blocks, screws, and washers for later use. See Figure 18
      Figure 18: Remove Guide Blocks from Rear Floating Rail Remove Guide Blocks from Rear Floating Rail
    3. Slide the rear floating rails into the front mounting rails. See Figure 19.
      Figure 19: Slide Rear Floating Rail into Front Mounting Rail Slide Rear Floating Rail into Front Mounting Rail
    4. Mounting rails assembled. See Figure 20.
      Figure 20: Front and Rear Rails Assembled Front and Rear Rails Assembled
  3. Attach the mounting rails to the threaded hole rack.
    1. Align the guide blocks of the rear mounting rails with the rear-post holes. Pull the rear mounting rails toward the front of the rack to lock the rails in place. You will hear a click sound when the latch locks into the corresponding rack holes. See Figure 21.
      Figure 21: Install the Rear Floating Rails Install the Rear Floating Rails
    2. Move the latch locks on the front mounting rails to open position, slide the front mounting rails and align them to the front rack post. Push the lock latch to locked position and using the screws removed in step 2.a and the washers removed in step 2.b, secure the front mounting rails to the front rack post. See Figure 22.
      Figure 22: Install the Front Mounting Rails Install the Front Mounting Rails
    3. Secure the rear floating rails to the rear rack post by using screws (not provided) appropriate for your rack threaded size. See Figure 23.
      Figure 23: Secure the Rear Floating Rails Secure the Rear Floating Rails
    4. Visually ensure that the front and rear latches are locked into place on the mounting rails. See Figure 24.
      Figure 24: Mounting Rails Installed and Secured Mounting Rails Installed and Secured
  4. Attach mounting brackets to the device if not pre-installed. If your device already has the mounting brackets pre-installed than skip this step and move to the next step.
    1. Align the holes on the mounting bracket with the screw holes on the side panel of the chassis.
    2. Insert the flat head M4 x 6mm Phillips screws to attach the mounting bracket into the aligned holes on the chassis (see Figure 25). Tighten the screws.
      Figure 25: Attach the Mounting Brackets to the Device Attach the Mounting Brackets to the Device
  5. Position the device in such a manner that the AIR OUT labels on components are next to the hot aisle.
  6. Grasp both sides of the device, lift it, and position the device such that the mounting rails slide into the channels of the mounting brackets. See Figure 26.
    Figure 26: Slide the Device into the Rack Slide the Device into the Rack
  7. Tighten the two thumbscrews to secure the device. See Figure 27.
    Figure 27: Tighten Thumb Screws Tighten Thumb Screws

Mount a QFX5120-48T, QFX5120-48Y, or QFX5120-48YM Switch Flush with the Front Posts of a Rack or Cabinet

Note:

The protective earthing terminal on QFX5120-48T, QFX5120-48Y, and QFX5120-48YM switches mounted flush with the front posts of a rack is accessible through the slot on the left rear bracket only if the distance between the front posts and the rear posts is 23 in. (58.5 cm) through 30.25 in. (76.8 cm).

Before you mount a QFX5120-48T, QFX5120-48Y, or QFX5120-48YM switch:

Ensure that you have the following parts and tools available:

  • Number 2 Phillips (+) screwdriver—not provided

  • Eight screws to secure the mounting brackets to the rack—not provided

  • Electrostatic discharge (ESD) grounding strap—not provided

  • Front mounting bracket assembly for mounting the switch flush with the front posts of a rack—2 (provided with the four-post rack mount kit)

    (The front mounting bracket assembly is made up of a side rail to which an L-shaped bracket is attached.)

  • Flat head 4x6-mm Phillips screws for attaching the front mounting brackets to the chassis—12 (provided with the four-post rack mount kit)

  • Rear mounting brackets—2 (provided with the four-post rack mount kit)

You can mount a QFX5120 switch on four posts of a four-post 19-in. rack or in a cabinet that contains a four-post 19-in. rack, flush with the front posts, by using a four-post rack mount kit. (The remainder of this topic uses rack to mean rack or cabinet.) You can mount QFX5120-48T, QFX5120-48Y, and QFX5120-48YM switches in a recessed position inside a four-post rack by using the recessed mounting brackets. You can also mount QFX5120-48YM switches on a two-post rack by using a separately orderable two-post rack mount kit.

This topic describes the procedure to mount QFX5120-48T, QFX5120-48Y, and QFX5120-48YM switches flush with the front posts of a four-post rack. If you want to mount the switch in a recessed position from the front posts of a four-post rack, see Mount a QFX5120-48T, QFX5120-48Y, or QFX5120-48YM Switch in a Recessed Position from the Front Posts of a Rack or Cabinet. If you want to mount a QFX5120-48YM switch on a two-post rack, see Mount a QFX5120-48YM Switch on a Two-Post Rack.

Note:

One person must be available to lift the switch while another person secures the switch to the rack.

CAUTION:

If you are mounting multiple units on a rack, mount the heaviest unit at the bottom of the rack, and then mount the other units from the bottom of the rack to the top in decreasing order of the weight of the units.

To mount a QFX5120-48T, QFX5120-48Y, or QFX5120-48YM switch flush with the front posts of a four-post rack:

  1. Place the switch on a flat, stable surface.
  2. Wrap and fasten one end of the ESD wrist strap around your bare wrist, and connect the other end of the strap to a site ESD point.
  3. Align the front mounting bracket assembly (provided with the four-post rack mount kit) along the side panel of the switch such that the front of the bracket is flush with the front panel of the switch chassis.
  4. Insert the flat head 4x6-mm Phillips screws for attaching the front mounting brackets (provided with the four-post rack mount kit) into the aligned holes on the chassis (see Figure 28, Figure 29, and Figure 30). Tighten the screws.
    Figure 28: Attach the Flush Mounting Brackets to a QFX5120-48T Switch ChassisAttach the Flush Mounting Brackets to a QFX5120-48T Switch Chassis
    Figure 29: Attach the Flush Mounting Brackets to a QFX5120-48Y Switch ChassisAttach the Flush Mounting Brackets to a QFX5120-48Y Switch Chassis
    Figure 30: Attach the Flush Mounting Brackets to a QFX5120-48YM Switch ChassisAttach the Flush Mounting Brackets to a QFX5120-48YM Switch Chassis
  5. Decide which end of the switch you want to place at the front of the rack. Position the switch so that the AIR IN labels on the fan modules are facing the cold aisle, or the AIR OUT labels on the fan modules are facing the hot aisle.
  6. Have one person grasp both sides of the switch, lift the switch, and position it in the rack, aligning the holes of the mounting brackets with the threaded holes in the front post of the rack. Align the bottom hole in both the mounting brackets with a hole in each rack rail, making sure that the chassis is level.
  7. Have a second person secure the front of the switch to the rack by using the screws appropriate for your rack. Tighten the screws (see Figure 31, Figure 32, and Figure 33).
    Figure 31: Secure the QFX5120-48T Switch to the Front Posts of a RackSecure the QFX5120-48T Switch to the Front Posts of a Rack
    Figure 32: Secure the QFX5120-48Y Switch to the Front Posts of a RackSecure the QFX5120-48Y Switch to the Front Posts of a Rack
    Figure 33: Secure the QFX5120-48YM Switch to the Front Posts of a RackSecure the QFX5120-48YM Switch to the Front Posts of a Rack
  8. Slide the rear mounting bracket blades into the side rails of the front mounting brackets attached to the switch chassis (see Figure 34, Figure 35, and Figure 36).
  9. Ensure that the chassis is level. Align the holes of the rear mounting brackets with the threaded holes in the rear post of the rack. Align the bottom hole in both the mounting brackets with a hole in each rack rail. Align the bottom hole in both the rear mounting brackets with the bottom hole in the front mounting brackets.
  10. Secure the rear mounting brackets to the rear post of the rack by using screws appropriate for your rack (see Figure 34, Figure 35, and Figure 36).
    Figure 34: Secure the QFX5120-48T Switch to the Rear Post of the Rack by Using the Rear Mounting BracketsSecure the QFX5120-48T Switch to the Rear Post of the Rack by Using the Rear Mounting Brackets
    Figure 35: Secure the QFX5120-48Y Switch to the Rear Post of the Rack by Using the Rear Mounting BracketsSecure the QFX5120-48Y Switch to the Rear Post of the Rack by Using the Rear Mounting Brackets
    Figure 36: Secure the QFX5120-48YM Switch to the Rear Post of the Rack by Using the Rear Mounting BracketsSecure the QFX5120-48YM Switch to the Rear Post of the Rack by Using the Rear Mounting Brackets

    Your switch is now installed on a four-post rack.

Mount a QFX5120-48T, QFX5120-48Y, or QFX5120-48YM Switch in a Recessed Position from the Front Posts of a Rack or Cabinet

Note:

The protective earthing terminal on QFX5120-48T, QFX5120-48Y, and QFX5120-48YM switches mounted in a recessed position from the front posts of a rack is accessible through the slot on the left rear bracket only if the distance between the front posts and the rear posts is 25 in. (63.5 cm) through 32.25 in. (81.9 cm).

Before you mount a QFX5120-48T, QFX5120-48Y, or QFX5120-48YM switch:

Ensure that you have the following parts and tools available:

  • Number 2 Phillips (+) screwdriver—not provided

  • Eight screws to secure the mounting brackets to the rack—not provided

  • Electrostatic discharge (ESD) grounding strap—not provided

  • Front mounting bracket assembly for mounting the switch flush with the front posts of a rack—2 (provided with the four-post rack mount kit)

    (The front mounting bracket assembly is made up of a side rail to which an L-shaped bracket is attached.)

  • Flat head 4x6-mm Phillips screws for attaching the front mounting brackets to the chassis—12 (provided with the four-post rack mount kit)

  • Rear mounting brackets—2 (provided with the four-post rack mount kit)

  • Recessed mounting brackets for mounting the switch in a recessed position from the front posts of a rack—2 (provided with the four-post rack mount kit)

  • Flat head 4-40 Phillips screws for attaching the recessed mounting brackets to the side rails—6 (provided with the four-post rack mount kit)

You can mount a QFX5120 switch on four posts of a four-post 19-in. rack or in a cabinet that contains a four-post 19-in. rack, flush with the front posts, by using a four-post rack mount kit. (The remainder of this topic uses rack to mean rack or cabinet.) You can mount QFX5120-48T, QFX5120-48Y, and QFX5120-48YM switches in a recessed position inside a four-post rack by using the recessed mounting brackets. You can also mount QFX5120-48YM switches on a two-post rack by using a separately orderable two-post rack mount kit.

This topic describes the procedure to mount QFX5120-48T, QFX5120-48Y, and QFX5120-48YM switches in a recessed position from the front posts of a four-post rack. If you want to mount the switch flush with the front posts of a four-post rack, see Mount a QFX5120-48T, QFX5120-48Y, or QFX5120-48YM Switch Flush with the Front Posts of a Rack or Cabinet. If you want to mount a QFX5120-48YM switch on a two-post rack, see Mount a QFX5120-48YM Switch on a Two-Post Rack.

Note:

One person must be available to lift the switch while another person secures the switch to the rack.

CAUTION:

If you are mounting multiple units on a rack, mount the heaviest unit at the bottom of the rack, and then mount the other units from the bottom of the rack to the top in decreasing order of the weight of the units.

To mount a QFX5120-48T, QFX5120-48Y, or QFX5120-48YM switch in a recessed position from the front posts of a four-post rack:

  1. Place the switch on a flat, stable surface.
  2. Wrap and fasten one end of the ESD wrist strap around your bare wrist, and connect the other end of the strap to a site ESD point.
  3. Unscrew and detach the L-shaped bracket from the side rail in the front mounting bracket assembly provided with the four-post rack mount kit (see Figure 37).
    Figure 37: Unscrew and Detach the L-Shaped Bracket from the Side RailUnscrew and Detach the L-Shaped Bracket from the Side Rail
      1
    —

    Side rail

      2
    —

    L-shaped bracket

  4. Attach the recessed mounting brackets provided with the four-post rack mount kit to the side rails by using the flat head 4-40 Phillips screws provided with the four-post rack mount kit (see Figure 38).
    Figure 38: Attach the Recessed Mounting Bracket to the Side RailAttach the Recessed Mounting Bracket to the Side Rail
      1
    —

    Side rail

      2
    —

    Recessed mounting bracket

  5. Align the recessed mounting bracket assembly along the side panel of the switch.
  6. Insert the flat head 4x6-mm Phillips screws for attaching the recess mounting bracket assembly (provided with the four-post rack mount kit) into the aligned holes on the chassis (see Figure 39, Figure 40, and Figure 41). Tighten the screws.
    Figure 39: Attach the Recessed Mounting Bracket Assembly to the QFX5120-48T Switch ChassisAttach the Recessed Mounting Bracket Assembly to the QFX5120-48T Switch Chassis
    Figure 40: Attach the Recessed Mounting Bracket Assembly to the QFX5120-48Y Switch ChassisAttach the Recessed Mounting Bracket Assembly to the QFX5120-48Y Switch Chassis
    Figure 41: Attach the Recessed Mounting Bracket Assembly to the QFX5120-48YM Switch ChassisAttach the Recessed Mounting Bracket Assembly to the QFX5120-48YM Switch Chassis
  7. Decide which end of the switch you want to place at the front of the rack. Position the switch so that the AIR IN labels on the fan modules are facing the cold aisle, or the AIR OUT labels on the fan modules are facing the hot aisle.
  8. Have one person grasp both sides of the switch, lift the switch, and position it in the rack, aligning the holes of the mounting brackets with the threaded holes in the front post of the rack. Align the bottom hole in both the mounting brackets with a hole in each rack rail, making sure that the chassis is level.
  9. Have a second person secure the front of the switch to the rack by using the screws appropriate for your rack. Tighten the screws (see Figure 42, Figure 43, and Figure 44).
    Figure 42: Secure the QFX5120-48T Switch to the Front Posts of a RackSecure the QFX5120-48T Switch to the Front Posts of a Rack
    Figure 43: Secure the QFX5120-48Y Switch to the Front Posts of a RackSecure the QFX5120-48Y Switch to the Front Posts of a Rack
    Figure 44: Secure the QFX5120-48YM Switch to the Front Posts of a RackSecure the QFX5120-48YM Switch to the Front Posts of a Rack
  10. Slide the rear mounting bracket blades into the side rails of the recess mounting bracket assembly attached to the switch chassis (see Figure 45, Figure 46, and Figure 47).
  11. Ensure that the chassis is level. Align the holes of the rear mounting brackets with the threaded holes in the rear post of the rack. Align the bottom hole in both the mounting brackets with a hole in each rack rail. Align the bottom hole in both the rear mounting brackets with the bottom hole in the front mounting brackets.
  12. Secure the rear mounting brackets to the rear post of the rack by using screws appropriate for your rack (see Figure 45, Figure 46, and Figure 47).
    Figure 45: Secure the QFX5120-48T Switch to the Rear Post of the Rack by Using the Rear Mounting BracketsSecure the QFX5120-48T Switch to the Rear Post of the Rack by Using the Rear Mounting Brackets
    Figure 46: Secure the QFX5120-48Y Switch to the Rear Post of the Rack by Using the Rear Mounting BracketsSecure the QFX5120-48Y Switch to the Rear Post of the Rack by Using the Rear Mounting Brackets
    Figure 47: Secure the QFX5120-48YM Switch to the Rear Post of the Rack by Using the Rear Mounting BracketsSecure the QFX5120-48YM Switch to the Rear Post of the Rack by Using the Rear Mounting Brackets

    Your switch is now installed on a four-post rack.

Mount a QFX5120-48Y Switch on a Two-Post Rack

Before you mount a QFX5120-48Y switch on a two-post rack:

Ensure that you have the following parts and tools available:

  • Number 2 Phillips (+) screwdriver—not provided

  • Eight screws to secure the mounting brackets to the rack—not provided

  • Electrostatic discharge (ESD) grounding strap—not provided

  • Two-post rack mounting bracket for mounting the switch on a two-post rack—2 (provided with the two-post rack mount kit)

  • Flat head 4x6-mm Phillips screws for attaching the two-post rack mounting brackets to the chassis—8 (provided with the two-post rack mount kit)

You can mount a QFX5120 switch on four posts of a four-post 19-in. rack or in a cabinet that contains a four-post 19-in. rack, flush with the front posts, by using a four-post rack mount kit. (The remainder of this topic uses rack to mean rack or cabinet.) You can mount QFX5120-48Y switches in a recessed position inside a four-post rack by using the recessed mounting brackets. You can also mount QFX5120-48Y switches on a two-post rack by using a separately orderable two-post rack mount kit.

This topic describes the procedure to mount a QFX5120-48Y switch on a two-post rack. If you want to mount the switch flush with the front posts of a four-post rack, see Mount a QFX5120-48T, QFX5120-48Y, or QFX5120-48YM Switch Flush with the Front Posts of a Rack or Cabinet. If you want to mount the switch in a recessed position from the front posts of a four-post rack, see Mount a QFX5120-48T, QFX5120-48Y, or QFX5120-48YM Switch in a Recessed Position from the Front Posts of a Rack or Cabinet.

Note:

One person must be available to lift the switch while another person secures the switch to the rack.
CAUTION:

If you are mounting multiple units on a rack, mount the heaviest unit at the bottom of the rack, and then mount the other units from the bottom of the rack to the top in decreasing order of the weight of the units.

To mount a QFX5120-48Y switch on a two-post rack:

  1. Place the switch on a flat, stable surface.
  2. Wrap and fasten one end of the ESD wrist strap around your bare wrist, and connect the other end of the strap to a site ESD point.
  3. Align the two-post rack mounting bracket (provided with the two-post rack mount kit) along the side panel of the switch.
  4. Insert the flat head 4x6-mm Phillips screws for attaching the two-post rack mounting brackets (provided with the two-post rack mount kit) into the aligned holes on the chassis. Tighten the screws.
    Figure 48: Attach the Two-Post Rack Mounting Brackets to a QFX5120-48Y Switch Chassis Attach the Two-Post Rack Mounting Brackets to a QFX5120-48Y Switch Chassis
  5. Decide which end of the switch you want to place at the front of the rack. Position the switch so that the AIR IN labels on the fan modules are facing the cold aisle, or the AIR OUT labels on the fan modules are facing the hot aisle.
  6. Have one person grasp both sides of the switch, lift the switch, and position it in the rack, aligning the holes of the mounting brackets with the threaded holes in the posts of the rack. Align the bottom hole in both the mounting brackets with a hole in each rack rail, making sure that the chassis is level.
  7. Have a second person secure the switch to the rack by using the screws appropriate for your rack. Tighten the screws.
    Figure 49: Secure the QFX5120-48Y Switch to the Two-Post Rack Secure the QFX5120-48Y Switch to the Two-Post Rack

    Your switch is now installed on a two-post rack.

Mount a QF5120-T Switch on a Two-Post Rack

Before you mount a QFX5120-48T switch on a two-post rack:

Ensure that you have the following parts and tools available:

  • Number 2 Phillips (+) screwdriver—not provided

  • Eight screws to secure the mounting brackets to the rack—not provided

  • Electrostatic discharge (ESD) grounding strap—not provided

  • Two-post rack mounting bracket for mounting the switch on a two-post rack—2 (provided with the two-post rack mount kit)

  • Flat head 4x6-mm Phillips screws for attaching the two-post rack mounting brackets to the chassis—8 (provided with the two-post rack mount kit)

You can mount a QFX5120 switch on four posts of a four-post 19-in. rack or in a cabinet that contains a four-post 19-in. rack, flush with the front posts, by using a four-post rack mount kit. (The remainder of this topic uses rack to mean rack or cabinet.) You can mount QFX5120-48T switches in a recessed position inside a four-post rack by using the recessed mounting brackets. You can also mount QFX5120-48T switches on a two-post rack by using a separately orderable two-post rack mount kit.

This topic describes the procedure to mount a QFX5120-48T switch on a two-post rack. If you want to mount the switch flush with the front posts of a four-post rack, see Mount a QFX5120-48T, QFX5120-48Y, or QFX5120-48YM Switch Flush with the Front Posts of a Rack or Cabinet. If you want to mount the switch in a recessed position from the front posts of a four-post rack, see Mount a QFX5120-48T, QFX5120-48Y, or QFX5120-48YM Switch in a Recessed Position from the Front Posts of a Rack or Cabinet.

Note:

One person must be available to lift the switch while another person secures the switch to the rack.
CAUTION:

If you are mounting multiple units on a rack, mount the heaviest unit at the bottom of the rack, and then mount the other units from the bottom of the rack to the top in decreasing order of the weight of the units.

To mount a QFX5120-48T switch on a two-post rack:

  1. Place the switch on a flat, stable surface.
  2. Wrap and fasten one end of the ESD wrist strap around your bare wrist, and connect the other end of the strap to a site ESD point.
  3. Align the two-post rack mounting bracket (provided with the two-post rack mount kit) along the side panel of the switch).
  4. Insert the flat head 4x6-mm Phillips screws for attaching the two-post rack mounting brackets (provided with the two-post rack mount kit) into the aligned holes on the chassis. Tighten the screws.
    Figure 50: Attach the Two-Post Rack Mounting Brackets to a QFX5120-48T Switch Chassis
  5. Decide which end of the switch you want to place at the front of the rack. Position the switch so that the AIR IN labels on the fan modules are facing the cold aisle, or the AIR OUT labels on the fan modules are facing the hot aisle.
  6. Have one person grasp both sides of the switch, lift the switch, and position it in the rack, aligning the holes of the mounting brackets with the threaded holes in the posts of the rack. Align the bottom hole in both the mounting brackets with a hole in each rack rail, making sure that the chassis is level.
  7. Have a second person secure the switch to the rack by using the screws appropriate for your rack. Tighten the screws).
    Figure 51: Secure the QFX5120-48T Switch to the Two-Post Rack Secure the QFX5120-48T Switch to the Two-Post Rack

    Your switch is now installed on a two-post rack.

Mount a QFX5120-48YM Switch on a Two-Post Rack

Before you mount a QFX5120-48YM switch on a two-post rack:

Ensure that you have the following parts and tools available:

  • Number 2 Phillips (+) screwdriver—not provided

  • Eight screws to secure the mounting brackets to the rack—not provided

  • Electrostatic discharge (ESD) grounding strap—not provided

  • Two-post rack mounting bracket for mounting the switch on a two-post rack—2 (provided with the two-post rack mount kit)

  • Flat head 4x6-mm Phillips screws for attaching the two-post rack mounting brackets to the chassis—8 (provided with the two-post rack mount kit)

You can mount a QFX5120 switch on four posts of a four-post 19-in. rack or in a cabinet that contains a four-post 19-in. rack, flush with the front posts, by using a four-post rack mount kit. (The remainder of this topic uses rack to mean rack or cabinet.) You can mount QFX5120-48YM switches in a recessed position inside a four-post rack by using the recessed mounting brackets. You can also mount QFX5120-48YM switches on a two-post rack by using a separately orderable two-post rack mount kit.

This topic describes the procedure to mount a QFX5120-48YM switch on a two-post rack. If you want to mount the switch flush with the front posts of a four-post rack, see Mount a QFX5120-48T, QFX5120-48Y, or QFX5120-48YM Switch Flush with the Front Posts of a Rack or Cabinet. If you want to mount the switch in a recessed position from the front posts of a four-post rack, see Mount a QFX5120-48T, QFX5120-48Y, or QFX5120-48YM Switch in a Recessed Position from the Front Posts of a Rack or Cabinet.

Note:

One person must be available to lift the switch while another person secures the switch to the rack.

CAUTION:

If you are mounting multiple units on a rack, mount the heaviest unit at the bottom of the rack, and then mount the other units from the bottom of the rack to the top in decreasing order of the weight of the units.

To mount a QFX5120-48YM switch on a two-post rack:

  1. Place the switch on a flat, stable surface.
  2. Wrap and fasten one end of the ESD wrist strap around your bare wrist, and connect the other end of the strap to a site ESD point.
  3. Align the two-post rack mounting bracket (provided with the two-post rack mount kit) along the side panel of the switch.
  4. Insert the flat head 4x6-mm Phillips screws for attaching the two-post rack mounting brackets (provided with the two-post rack mount kit) into the aligned holes on the chassis). Tighten the screws.
    Figure 52: Attach the Two-Post Rack Mounting Brackets to a QFX5120-48YM Switch Chassis Attach the Two-Post Rack Mounting Brackets to a QFX5120-48YM Switch Chassis
  5. Decide which end of the switch you want to place at the front of the rack. Position the switch so that the AIR IN labels on the fan modules are facing the cold aisle, or the AIR OUT labels on the fan modules are facing the hot aisle.
  6. Have one person grasp both sides of the switch, lift the switch, and position it in the rack, aligning the holes of the mounting brackets with the threaded holes in the posts of the rack. Align the bottom hole in both the mounting brackets with a hole in each rack rail, making sure that the chassis is level.
  7. Have a second person secure the switch to the rack by using the screws appropriate for your rack. Tighten the screws.
    Figure 53: Secure the QFX5120-48YM Switch to the Two-Post Rack Secure the QFX5120-48YM Switch to the Two-Post Rack

    Your switch is now installed on a two-post rack.