Chapter 3
Rack Mounting the Switch
The accessory kit provides components for installing the switch in two-post and four-post racks.
•
Section 3.1.1 provides instructions for mounting the switch in a two-post rack.
•
Section 3.1.4 provides instructions for mounting the switch in a four-post rack.
•
Section 3.2 provides instructions for mounting the 7512N switch in a shelf four-post rack.
The rack mounting procedure is identical for the 7504N and 7508N Series switches. Illustrations in this
chapter depict the mounting of an unpopulated 8-slot chassis.
The 7512N switch requires a special mounting shelf. Illustrations in this chapter depict the mounting of
an unpopulated 12-slot chassis.
After completing the instructions for your rack type, proceed to Chapter 4.
3.1
7504N and 7508N Rack Mounting
3.1.1
Two-Post Rack Mount
To mount the switch to a two-post rack, assemble mounting brackets to the middle of the chassis, then
attach the brackets to the rack. The switch does not support a front or rear mount into a two-post rack.
The accessory kit includes the following two-post mounting parts:
3.1.2
•
2 center-mount brackets
•
20 M4x8 pan-head Phillips screws
Attaching Mounting Brackets to the Chassis
Step 1 Orient the switch chassis and the two center-mount brackets (Figure 3-1 on page 12).
Position the flanges that attach to the rack posts toward the rear of the chassis.
Step 2 Attach both center-mount brackets to the chassis. Each bracket requires ten M4x8 pan-head
Phillips screw.
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7504N and 7508N Rack Mounting
Chapter 3: Rack Mounting the Switch
Figure 3-1: Attaching the center-mount brackets
3.1.3
Inserting the Switch into the Rack
Step 1 Move the chassis to the rack using a mechanical lift.
If modules are inserted in the chassis, use the lift carefully to avoid damaging any components.
Step 2 Lift the chassis into the rack. Position the flanges against the rack posts (Figure 3-2).
Figure 3-2: Lifting the chassis into the two post rack
Step 3 Select mounting screws that fit your equipment rack.
Step 4 A minimum of four screws is required on each side of the chassis. The accessory kit provides
screws that fit many common equipment racks. When installing the switch into a rack with
unthreaded post holes, nuts are also required to secure the switch to the rack posts.
Step 5 Attach the bracket flanges to the rack posts (Figure 3-3 on page 13). Space the screws evenly
along the flange.
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Quick Start Guide: 7500N Series Modular Switch
Chapter 3: Rack Mounting the Switch
7504N and 7508N Rack Mounting
Figure 3-3: Attaching flanges to the rack post
Step 6 After completing the two-post installation, proceed to Chapter 4.
3.1.4
Four-Post Rack Mount
The switch is mounted onto a four-post rack by assembling a shelf into the rack, then placing the switch
on the shelf.
Illustrations in this chapter depict the mounting of an unpopulated 8-slot chassis.
The accessory kit provides the following four-post mounting parts:
•
2 front brackets
•
4 shelf supports
•
2 back brackets (not needed for racks with threaded holes)
•
left shelf
•
right shelf
Figure 3-4 on page 14 displays the front four-post mounting parts. Figure 3-5 on page 14 displays the
rear four-post mounting parts.
3.1.5
Assembling the Shelf
Step 1 Attach the front bracket and shelf support to the left front rack post, as shown in Figure 3-4 on
page 14. An up arrow is printed on the shelf support to indicate its proper orientation.
Unthreaded rack holes: Use the M6 screws and cage nuts supplied in the accessory kit.
Threaded rack holes: Attach the front bracket to the post with screws that can be threaded
through the rack post.
Step 2 Secure the shelf support to the post with nuts that fit the screws threaded through the post.
•
7504N - Requires six M6 screws and cage nuts.
•
7508N - Requires eight M6 screws and cage nuts.
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7504N and 7508N Rack Mounting
Chapter 3: Rack Mounting the Switch
Figure 3-4: Left front post assembly: Four post rack mount
Step 3 Repeat step 1 on the right front rack post, assembling the parts at the same vertical level as
those on the left rack post.
Step 4 Attach the shelf support and back bracket to the left rear post (Figure 3-5-left). The shelf
support must be assembled at the same vertical level on the front and rear posts. An up arrow
is printed on the shelf support to indicate its proper orientation.
Unthreaded rack holes: Attach the parts as displayed in Figure 3-5-left.
Threaded rack holes: Attach the shelf support to the post with screws that thread into the rack
post. The back bracket is not required on threaded racks.
Figure 3-5: Left rear post assembly and shelf support orientation
Step 5 Adjust the left shelf by sliding its components to fit between the front left and rear left rack
posts, as shown in Figure 3-6 on page 15.
Step 6 Lift the left shelf above the shelf supports installed on the front left and rear left rack posts
(step 1 and step 4). Align the holes (Inset A) and hook (Inset B) with the stubs on the brackets
as shown in Figure 3-7 on page 15. Lower the shelf such that the bracket stubs are inserted
into the shelf holes and hook.
Step 7 Press down firmly on the shelf to ensure it is seated securely on the rack posts.
Step 8 Install the right shelf on the right front and right rear rack posts by repeating step 5 and step 6
to obtain the rack configuration shown in Figure 3-8 on page 16.
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Quick Start Guide: 7500N Series Modular Switch
Chapter 3: Rack Mounting the Switch
7504N and 7508N Rack Mounting
Figure 3-6: Adjusting the left shelf
Figure 3-7: Both switch shelves installed
3.1.6
Inserting the Switch into the Rack
The rack mounting assembly is identical for the 7504N and 7508N switches. Illustrations in this chapter
depict the mounting of an unpopulated 8-slot chassis.
Step 1 Move the chassis to the rack using a mechanical lift (Figure 3-8 on page 16).
Note
If modules are inserted in the chassis, use the lift carefully to avoid damaging any components.
Step 2 Lift the chassis into the rack.
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7512N Shelf Rack Mount Installation
Chapter 3: Rack Mounting the Switch
Figure 3-8: Lifting the chassis
Step 3 Secure the chassis by tightening the thumbscrews on the front flanges into the rack posts
(Figure 3-9).
Figure 3-9: Secure the switch to the rack shelf
Step 4 After completing the Four-Post Installation, proceed to Chapter 4.
3.2
7512N Shelf Rack Mount Installation
The rack mounting assembly is for the 7512 Series switch.
3.2.1
Assembling the Shelf
Step 1 For threaded racks, remove the plastic alignment spacers and use the 3mm diameter
alignment pins (Figure 3-10 on page 17).
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Chapter 3: Rack Mounting the Switch
7512N Shelf Rack Mount Installation
Figure 3-10:
Step 2 Attach the front bracket and shelf support to the left front rack post, as shown in Figure 3-11.
An up arrow is printed on the shelf support to indicate its proper orientation.
Figure 3-11: Rack mount shelf orientation
Unthreaded rack holes: Use the M6 screws and cage nuts supplied in the accessory kit.
Threaded rack holes: Attach the front bracket to the post with screws that can be threaded
through the rack post.
Step 3 Hook the alignment pin to the bottom hole of the 6th U from bottom (Figure 3-12 on page 18).
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7512N Shelf Rack Mount Installation
Chapter 3: Rack Mounting the Switch
Figure 3-12: Left front post assembly
Step 4 Repeat step 1 and 3 on the right front rack post, assembling the parts at the same vertical
level as those on the left rack post.
Step 5 Attach the shelf support and back bracket to the left rear post (Figure 3-13 on page 19). The
shelf support must be assembled at the same vertical level on the front and rear posts. An up
arrow is printed on the shelf support to indicate its proper orientation.
Unthreaded rack holes: Use the M6 screws and cage nuts supplied in the accessory kit.
Threaded rack holes: Attach the shelf support to the post with screws that thread into the rack
post.
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Chapter 3: Rack Mounting the Switch
7512N Shelf Rack Mount Installation
Figure 3-13: Left rear post assembly and shelf support orientation
Step 6 Lift the shelf above the shelf supports installed on the left and right rack posts (step 2 and
step 3). Align the holes and hook with the stubs on the brackets. Lower the shelf such that the
bracket stubs are inserted into the shelf holes and hook (Figure 3-14 on page 20).
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7512N Shelf Rack Mount Installation
Chapter 3: Rack Mounting the Switch
Figure 3-14: Lower the shelf into the bracket stubs
Step 7 Press down firmly on the shelf to ensure it is seated securely on the rack posts.
3.2.2
Inserting the Switch into the Rack
The rack mounting assembly is identical for all 7500N Series switches. Illustrations in this chapter
depict the mounting of an unpopulated 8-slot chassis.
Step 1 Move the chassis to the rack using a mechanical lift (Figure 3-15 on page 21).
If modules are inserted in the chassis, use the lift carefully to avoid damaging any components.
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Quick Start Guide: 7500N Series Modular Switch
Chapter 3: Rack Mounting the Switch
7512N Shelf Rack Mount Installation
Figure 3-15: Lifting the chassis
Step 2 Secure the chassis by use of 10 rack screws attaching the ears of the chassis to the front
flanges of the rack posts (Figure 3-16).
DC
S-7
508
N
Figure 3-16: Secure the chassis to the rack
Step 3 After completing the Shelf Rack Mount Installation, proceed to Chapter 4.
Quick Start Guide: 7500N Series Modular Switch
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7512N Shelf Rack Mount Installation
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Chapter 3: Rack Mounting the Switch
Quick Start Guide: 7500N Series Modular Switch
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