• The AC power receptacles used to plug in the chassis must be the grounding type. The grounding
conductors that connect to the receptacles should connect to protective earth ground at the service
equipment level.
Cabling Requirements
When running power and data cables together in overhead cable trays or subfloor cable trays, be aware of the
following caution:
We strongly recommend that power cabling runs and other potential noise sources be located as far away as
practical from LAN cabling that terminates on Cisco equipment. In situations where this type of long parallel
cable runs exist and cannot be separated by at least 3.3 feet (1 meter), we recommend that you shield these
potential noise sources. To avoid interference, the source should be shielded by housing it in a grounded
metallic conduit.
Caution
Also be aware of the following caution concerning the use of Category 5e and Category 6 Ethernet cables:
Category 5e, Category 6, and Category 6a cables can store large levels of static electricity because of the
dielectric properties of the materials used in their construction. Always ground the cables (especially in new
cable runs) to a suitable and safe earth ground before connecting them to the module.
Caution
Rack-Mounting Guidelines
Rack Specifications
Cisco Catalyst 9400 Series Switches are designed to be installed in standard, 19-inch equipment racks that
meet EIA-310-D specifications. Before rack-mounting the chassis, ensure that the equipment rack complies
with all requirements and guidelines
Mounting Location Guidelines
Cisco Catalyst 9400 Series Switches must be front-mounted.
Accordingly, you can install the chassis in 2-post or 4-post racks, but in a 4-post rack, the rear posts are not
used for mounting.
Width and Depth Requirements
Use a tape measure to verify the interior dimensions of the rack
• Measure the space between the inner edges of the left front and right front mounting posts. The chassis
is 17.30 inches (43.942 cm) wide and must fit between the mounting posts.
• Measure the depth of the rack from the outside of the front mounting posts to the outside of the rear
mounting strip. The chassis is 16.30 inches (41.40 cm) deep.
Cisco Catalyst 9400 Series Switches Hardware Installation Guide
36
Preparing for Installation
Cabling Requirements
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