Contents

8 Appendix C  Cabling recommendations for a hybrid cable distribution frame  1

Cable management for a hybrid cable distribution frame· 1

Routing hybrid copper-fiber cables· 1

Mounting an HDF in a rack· 3

Routing cables for an HDF and PoE cards· 4

8 Appendix C  Cabling recommendations for a hybrid cable distribution frame

Cable management for a hybrid cable distribution frame

Routing hybrid copper-fiber cables

Figure8-1 and Figure8-2 show the front panel and rear panel of a hybrid cable distribution frame (HDF), respectively.

Figure8-1 HDF front panel

Figure8-2 HDF rear panel

As shown in Figure8-3, connect hybrid copper-fiber cables and pigtails of hybrid copper-fiber transceiver modules in an HDF. Feed the hybrid copper-fiber cables through the cable holes in the HDF rear panel and use one cable hole for every six hybrid copper-fiber cables. As a best practice, first use the cable holes on two sides of the HDF rear panel for hybrid copper-fiber cables. Feed the pigtails of hybrid copper-fiber transceiver modules through the cable holes in the HDF front panel and use one cable hole for every two pigtails.

Figure8-3 Connected hybrid copper-fiber cables in an HDF

To connect hybrid copper-fiber cables and pigtails of hybrid copper-fiber transceiver modules in an HDF:

1.     As a best practice, strip off up to 900 mm (35.43 in) of the outer sheath of a hybrid copper-fiber cable and a pigtail. As a best practice, strip about 650 mm (25.59 in) outer sheath from a hybrid copper-fiber cable and about 250 mm (9.84 in) outer sheath from a pigtail.

2.     Fusion splice the optical fibers of a hybrid copper-fiber main cable and a pigtail.

3.     Label the optical fibers, fit the fusion spliced sections securely into holding slots on the splice securing tray, and then coil the optical fibers, as shown by callouts 1 and 2 in Figure8-4. As shown by callout 3 in Figure8-4, the splice securing tray has four layers and each layer can hold 24 fusion spliced sections. Callout 4 in Figure8-4 shows two fusion spliced sections secured in a holding slot.

4.     Cut off the excess sections of power wires, splice the power wires and place the spliced parts of the power wires on the left and right sides of the HDF.

5.     Repeat the above steps to connect all hybrid copper-fiber cables.

6.     Use cable ties to secure the hybrid copper-fiber cables, as shown in Figure8-5.

For more information about stripping the outer sheath of hybrid copper-fiber cables, fusion splicing optical fibers, and splicing power wires, see "Appendix D  Connecting the hybrid copper-fiber cable."

Figure8-4 Routing hybrid copper-fiber cables

Figure8-5 Securing hybrid copper-fiber cables

Mounting an HDF in a rack

Mounting an HDF in a rack

The rack-mounting procedure is the same for an HDF and switch. For more information, see "Installing the switch."

Figure8-6 Rack-mounting an HDF

Managing cables

As shown in Figure8-7, manage the main cables of hybrid copper-fiber cables fed through the rear panel of the HDF and the power cords fed through the side panel of the HDF.

Figure8-7 Managing cables

Routing cables for an HDF and PoE cards

Fan tray slots reside on the right of PoE cards on the switch. As a best practice, route cables at the left of the PoE cards.

Figure8-8 Routing hybrid copper-fiber cables (LSCM2YSV16TSV32SD0 as an example)