Mount a QFX5120-32C Switch on a Rack or Cabinet

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.)

• Verify that the site meets the requirements described in Site Preparation Checklist for QFX5120 Switches.

• Place the rack in its permanent location, allowing adequate clearance for airflow and maintenance, and secure the rack to the building structure.

• Read General Safety Guidelines and Warnings, with particular attention to Chassis and Component Lifting Guidelines.

• Ensure that you have taken the necessary precautions to prevent electrostatic discharge (ESD) damage (see Prevention of Electrostatic Discharge Damage).

• Remove the switch from the shipping carton (see Unpack the QFX5120 Switch).

• 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)

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

   

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

   

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

   

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

    

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.

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