Rack Mounting the Switch

Rack Mounting the Switch (2RU)

This section discusses the following topics:

Rack Mounting the Switch (2RU)

Note: Four-post rack mount is recommended for all switches. Use the rack-mount parts included with your switch for mounting. Rails from different kit SKUs may look similar, but could be incompatible, leading to the inability to properly mount or remove a switch from the rack.

After completing the instructions for your rack type, proceed to Cabling the Switch.

Rack Mounting the Switch (2RU)

This section discusses the following topics:

In two-post and four-post racks for 2RU switches.

Important:

The rack mounting procedure is identical for all switches covered by this guide. Illustrations in this chapter depict the mounting of a DCS-7050SX-128 switch.

 

Les procédure de montage du bâti est identique pour tous les commutateurs visés par ce guide. Illustrations dans ce chapitre montrent le montage d'un interrupteur de DCS-7050SX-128.

 

 

After completing the instructions for your rack type, proceed to Cabling the Switch.

Two-Post Rack Mount (2RU)

The 2RU switches covered in this guide do not support two-post rack mounting. The accessory kit contains only the four-post RMK components. Contact your local Arista Networks representative for further information if you require two-post rack mounting.

Four-Post Rack Mount (2RU)

The switch is mounted onto a four-post rack by assembling two rails onto the rear posts, sliding the switch onto the rails, and then securing the switch to the front posts.

The installation kit provides two bracket-rail assemblies. The following four-post mounting parts are extracted from each assembly:
  • Switch brackets
  • Rail brackets

     

Each chassis side has attachment pins that align with bracket holes; the number of pins varies by switch model. Pin orientation is symmetric and equidistant, supporting bracket placement where the flange is either flush with the front and rear panels, or not flush with the panels. Each bracket hole includes a key-opening for placing the bracket flush with the chassis and then locking it into place.

 

Important:

Attachment pins must engage all six bracket holes.

 

Goupilles de fixation doivent s’engager tous les trous de support six.

 

Extracting the Brackets and the Rails

The following figure displays a bracket-rail assembly and the component pieces (bracket and rail) that are extracted from the assembly kit. Each assembly must be separated into its component pieces before mounting the switch into a four-post rack. The two assemblies supplied with the switch are identical.

Figure 1. Accessory Kit Components
 
1 Rail bracket (front) 4 Locking clip 7 Switch mounting ear
2 Rail bracket (rear) 5 Rail mounting ear    
3 Switch bracket (for attaching to switch) 6 Thumb screw    

 

This procedure separates a bracket-rail assembly into its component pieces.

  1. Grip the rail with one hand.
  2. Pull the bracket flange away from the rail flange with your other hand until the bracket clip catches on the rail.

    If the bracket flange resists initially, verify the thumb screw on the bracket flange is not attached to the rail flange.

  3. While pressing the locking clip on the bracket, resume pulling the bracket from the rail until the separation is complete.
  4. Repeat the procedure for the other assembly.

Attaching Mounting Brackets to the Chassis

The following figure displays the switch bracket alignment for mounting the switch into a four-post rack.
Figure 2. Front Bracket Alignment
 
1 Switch bracket 2 Attach point 3 Matching attachment hole

 

This procedure attaches mounting brackets to the switch chassis as depicted by the following figure.

  1. Align the mounting brackets with the attachment pins.
  2. Place the bracket flush on the chassis with attachment pins protruding through key-openings.
  3. Slide the bracket toward the front flange until the rail locks with an audible click.
    Figure 3. Attaching the Mounting Brackets to the Switch Chassis
     
    1 Aligned rail 2 Seated rail

     

    To remove the mounting bracket from the chassis, lift the front edge of the mounting bracket clip with a flathead screwdriver and slide the bracket away from the front flange (opposite from the installation direction).

Expanding the Rails

The rail is a two-piece mechanism. The rail length is adjusted by sliding the rail-rod inside the rail-slide. The rail clip prevent extension of the rail beyond the maximum supported distance between front and rear rack posts. When the rail is contracted, the rail clip is closest to the slide end.

The rail is initially contracted and must be expanded to attach to the rack. This procedure expands the rails from their contracted state:

  1. Grip the slide end with your left hand and the rod end with your right hand.
  2. Pull the ends apart until the rail-clip makes an audible click.

Assembling the Rails onto the Equipment Rack

A rail connects a front post to a rear post. Each end has two rack plugs. Rails are installed into a rack by inserting the plugs into the rack slots. To install rails into posts with threaded or rounded holes, remove all plugs on both sides of the rails, then install the rails with bolts that fit the rack. This procedure attaches the rails to a four-post rack:
  1. Attach rail to the right rear rack post by inserting rod-end rack plugs into post slots. The slide assembly must be inside the right posts, relative to the left rack posts (Figure 4).

    If the rack plugs were previously removed, use bolts to attach the rail to the rack.

  2. Attach the slide end of the rail to the front post by extending the rail end past the post, then contracting the rail while guiding the rack plugs into the post.
  3. Repeat Steps 1 through2 for the left posts. Ensure the rails are on the same horizontal level.
    Figure 4. Attaching the Rails
     
    1 Front of right rail 3 Right rack post (rear)
    2 Right rack post (front) 4 Rear of right rail

Attaching the Switch to the Rack

After the rails are installed, the switch slides on the rails into the rack. Each bracket includes a thumb screw that attaches the switch to the rail.
Note: Illustrations shown could be different based on your accessory kit.

 

  1. Lift the switch into the rack and insert the mounting brackets into the slide rails.
  2. Slide the switch on the rails, toward the rear posts, until the mounting bracket flanges are flush with the rail flanges attached to the rack posts.
    Figure 5. Inserting the Switch onto the Rails

     

  3. Attach the bracket flanges to the rack post using the quick-release thumb screws supplied with the brackets.Hand-tighten the thumb screws or use a Phillips #2 screwdriver.
    Note: Do not exceed a maximum torque of 20in-lb or use powered impact drivers to secure the thumb screws.

     

    Figure 6. Attaching the Switch to the Rack Posts

     

    After completing the four-post rack mount, proceed to Cabling the Switch.