Cisco Catalyst 6840 Series Hardware Installation Manual page 55

Installing the Switch
• Positioned so approximately one half of the chassis protrudes in front of the rack:
Figure 19: Locations of Screw Holes for Alternate Chassis Installation Positions
1
2
Step 2 Rest the back end of the chassis on the rack-mount shelf and carefully slide the chassis into the rack until the
L brackets meet the front rails of the rack system.
Step 3 Locate the rack post holes that align with the chassis L bracket holes. If the rack post holes are prethreaded,
determine if the threads are 10-32 or 12-24. If the rack post holes are unthreaded, install eight or ten (four or
five on each side) either 10-32 or 12-24 clip or cage nuts over the rack post holes to accept the installation
screws.
Note
Step 4
If you want to install one or both of the optional cable guide assemblies, position the cable guides so that the
cable guide mounting holes are aligned with L bracket holes as shown in figure below.
• Remove the screws in the L brackets.
• Reposition the L brackets to align with the second set of holes behind the holes where the L brackets
were originally installed (see figure below).
• Secure the brackets with the screws.
Left L bracket already
attached. When the
chassis is installed, the
front of the chassis is
approximately flush with
the front of the rack.
Right L bracket already
attached. When the
chassis is installed, the
front of the chassis is
approximately flush with
the front of the rack.
Clip nuts or cage nuts are not included as part of the accessory kit that comes with the chassis. You
must obtain them yourself.
Installing the Chassis in a Two-Post Rack
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4
Catalyst 6840-X Switch Series Hardware Installation Guide
Screw holes for
reattaching the L brackets.
When the chassis is
installed, approximately
one quarter of it protrudes
in front of the rack.
Screw holes for
reattaching the L brackets.
When the chassis is
installed, approximately
one half of it protrudes in
front of the rack.
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