Juniper QFX5220-128C Quick Start Manual page 4

NOTE: There is a left mounting rail, stamped LEFT, and a right mounting rail, stamped RIGHT. The mounting
rails are not interchangable.
Figure 2: Attaching Mounting Rails to the QFX5220-128C Chassis
Right mounting rail
7. Use the Phillips number 2 screwdriver to attach the front of the mounting rail to the flange and chassis using three
M4 x 8 mm flathead screws. These slightly longer screws are needed to attach the mounting bracket through the flange
to the chassis. Tighten the screws.
8. Use eight of the shorter, M4 x 6 mm, flathead screws to complete the attachment of the mounting rail to chassis.
Tighten the screws using the Phillips number 2 screwdriver.
9. Repeats steps 6 through
10. Use a mechanical lift or have one person grasp both sides of the switch, lift it, and position it in the rack so that the
front bracket is aligned with the rack holes.
11. Have a second person secure the front of the switch to the rack using eight mounting screws (and cage nuts and
washers if your rack requires them.) Tighten the screws. See
and mounting blades to a QFX5220-128C.
Figure 3: Attach QFX5220-128C to Rack
8 for the right mounting bracket on the opposite side of the switch.
Left mounting rail
Figure 3 for an example of connecting the mounting rails
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