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Step 2: Mount the Switch on Four Posts of a Rack

 

You can mount a QFX5120 switch on four posts of a 19-in. rack or a 19-in. cabinet by using a rack mount kit. (The remainder of this topic uses rack to mean rack or cabinet). You can mount QFX5120-48Y and QFX5120-48T switches in a recessed position inside the rack.

Note

To ensure that the protective earthing terminal is accessible:

  • Ensure that the rack is 27.5 in. (70 cm) through 30.5 in. (77.5 cm) deep if you are mounting the switch flush with the rack front on four posts of a rack.

  • Ensure that the rack is 29.5 in. (75 cm) through 32.5 in. (82.5 cm) deep if you are mounting the switch 2 in. recessed from the rack front on four posts of a rack.

Before mounting a QFX5120 switch:

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 switch:

  1. Place the switch on a flat, stable surface.
  2. Attach the front mounting brackets.
    • If you are mounting a QFX5120-32C switch:

      1. 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
      2. 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
    • If you are mounting a QFX5120-48Y or QFX5120-48T switch flush with the front posts of a rack:

      1. Align the front mounting bracket assembly (provided with the 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.
      2. Insert the flat head 4x6-mm Phillips screws for attaching the front mounting brackets (provided with the rack mount kit) into the aligned holes on the chassis (see Figure 3). Tighten the screws.
        Figure 3: Attach the Flush Front Mounting Brackets to a QFX5120-48Y or QFX5120-48T Switch Chassis
        Attach
the Flush Front Mounting Brackets to a QFX5120-48Y or QFX5120-48T
Switch Chassis

      If you are mounting a QFX5120-48Y or QFX5120-48T switch in a recessed position from the front posts of a rack:

      1. Unscrew and detach the L-shaped bracket from the side rail in the front mounting bracket assembly (provided with the rack mount kit).
      2. Attach the recessed mounting bracket (provided with the rack mount kit) to the side rail by using the flat head 4-40 Phillips screws provided with the rack mount kit.
      3. Align the recessed mounting bracket assembly along the side panel of the switch.
      4. Insert the flat head 4x6-mm Phillips screws for attaching the recess mounting bracket assembly (provided with the rack mount kit) into the aligned holes on the chassis. Tighten the screws.
  3. 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.
  4. 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.
  5. 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 4, Figure 5, and Figure 6).
    Figure 4: Secure the QFX5120-32C Switch to the Front Posts of a Rack to Mount the Switch Flush with the Front Posts of a Rack
    Secure the
QFX5120-32C Switch to the Front Posts of a Rack to Mount the Switch
Flush with the Front Posts of a Rack
    Figure 5: Secure the QFX5120-48Y Switch to the Front Posts of a Rack to Mount the Switch Flush with the Front Posts of a Rack
    Secure the
QFX5120-48Y Switch to the Front Posts of a Rack to Mount the Switch
Flush with the Front Posts of a Rack
    Figure 6: Secure the QFX5120-48T Switch to the Front Posts of a Rack to Mount the Switch Flush with the Front Posts of a Rack
    Secure the
QFX5120-48T Switch to the Front Posts of a Rack to Mount the Switch
Flush with the Front Posts of a Rack
  6. Attach the rear mounting brackets.

    If you are mounting a QFX5120-32C switch:

    1. Ensure that the chassis is level. Align the holes of the rear mounting (L-shaped) 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.
    2. Secure the rear mounting brackets to the rear post of the rack by using screws appropriate for your rack (see Figure 7). Tighten the screws.
      Figure 7: 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
    3. Secure the rear mounting brackets to the side mounting rails by using the pan head M4X8 screws provided. Tighten the screws.

    If you are mounting a QFX5120-48Y or QFX5120-48T switch:

    1. Slide the rear mounting bracket blades into the side rails of the front mounting brackets attached to the switch chassis.
    2. 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.
    3. Secure the rear mounting brackets to the rear post of the rack by using screws appropriate for your rack (see Figure 8 and Figure 9).
      Figure 8: Secure the QFX5120-48Y Switch to the Rear Post of the Rack by Using the Rear Mounting Brackets
      Secure the
QFX5120-48Y Switch to the Rear Post of the Rack by Using the Rear
Mounting Brackets
      Figure 9: Secure the QFX5120-48T Switch to the Rear Post of the Rack by Using the Rear Mounting Brackets
      Secure the
QFX5120-48T Switch to the Rear Post of the Rack by Using the Rear
Mounting Brackets
Note

We recommend that you install covers in all unused power supply slots.