Install the Cable Trees

Before You Begin

The cable trees have two parts, a main trunk and an outer branch. These pieces are left-right symmetrical and their orientation for installation can be determined as follows:

• The main trunk installs at the front of the rack with the reinforcing ribs and cable shelf tabs toward the centerline of the rack. The square EMI screen mounting hole is at the bottom of the main trunk.

• The outer branch installs onto the main trunk with the reinforcing ribs facing to the rear of the rack. The center reinforcing rib has 4 openings above and 5 openings below.

1. Identify the prerequisite and subsequent tasks you must perform in conjunction with this procedure, to install the switch.

   See the table in Installation Sequence.

2. Bring the cable management hardware to the rack.
3. Identify the left main trunk and left outer branch.
4. While holding the left main trunk and left outer branch together, have a helper install the three M4 mounting screws.
   1. Install the first screw for the top hole on the main trunk.

      Finger tighten the screw only.

      
      
   2. Repeat Step a so that the middle and bottom screws are installed.
   3. Using a No. 2 Phillips screwdriver, securely tighten all three screws.
5. Set the assembled cable tree at the left front corner of the rack.
   
6. Insert the seven captive nuts for the left main trunk into cabinet holes a, b, c, d, e, f, and g.

   where a, b, c, d, e, f, and g are the respective cabinet holes:

   • 6, 8, 13, 19, 24, 30, and 33 for bottom mounting

   • 40, 42, 47, 53, 58, 64, and 67 for middle mounting

   • 74, 76, 81, 87, 92, 98, and 101 for top mounting

   
   
7. Lift the left cable tree into position.

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   Note - When in the correct position, the cable tree can rest upon the front flange of the slide rail.

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   Have a helper assist in aligning the cable tree mounting screw holes with the captive nuts in the rack.

8. While holding the cable tree in position, have a helper install the two M6 mounting screws.
   1. Install the first screw for the top hole of the main trunk.

      Finger tighten the screw only.

      
      
   2. Install the second screw into the bottom hole of the main trunk.

      Finger tighten the screw only.

9. Press the cable tree outward from the rack centerline and using a No. 2 Phillips screwdriver, firmly tighten the top and bottom screws.
10. Repeat Step 2 through Step 9 for the right main trunk and right outer branch at the front right corner of the chassis.
11. Consider your next steps:
    • If you are delivering InfiniBand cables from the floor or from under floor, attach the cable curves.

      See Install the Cable Curves.

    • If you are delivering InfiniBand cables from overhead, secure the switch chassis into the rack.

      See Install the Chassis in the Rack.

Related Information

• Suggested Tools for Installation

• Install the Rail Assemblies in the Rack