Cisco Nexus 7000 Series User manual

1
Doc. No.
Copyright © 1995
Cisco Systems, Inc.
All rights reserved.
Cisco 7000 and Cisco 7507
Rack-Mount Kit Installation Instructions
78-1058-03
Product Numbers: EFT-RMK, ACS-7KRMK and ACS-7KRMK=
Customer Order Number: DOC-781058=
This document provides instructions for installing Cisco 7000 and Cisco 7507 routers in a 19-inch
equipment rack. The rack-mount kit functionality is identical for both chassis. Throughout this
document, the Cisco 7000 and Cisco 7507 chassis are referred to as the chassis.
The sections in this document include the following:
•Rack-Mount Kit Overview, page 2
—Equipment Rack Descriptions, page 2
—Rack-Mount Installation Summary, page 3
—Mounting Kit Hardware, page 3
•Prerequisites, page 7
—Safety Guidelines, page 8
—Equipment Rack Considerations, page 11
—List of Parts and Tools, page 15
•Installation, page 16
—Installing the Brackets, page 16
—Attaching the Chassis Ears, page 20
—Installing the Chassis in the Rack, page 21
—Restarting the System, page 26
•Cisco Information Online, page 38
For complete system installation and startup procedures, refer to the Cisco 7000 Hardware
Installation and Maintenance or Cisco 7507 Hardware Installation and Maintenance publications.

2Cisco 7000 and Cisco 7507 Rack-Mount Kit Installation Instructions
Rack-Mount Kit Overview
Rack-Mount Kit Overview
This section describes the types of racks for which this rack-mounting kit is intended, and the
mounting configurations that are possible with each type.
Equipment Rack Descriptions
This kit is suitable for mounting the chassis in most 19-inch 2-post, 4-post, or Telco-type racks. The
rack must have at least two mounting posts on which to mount the hardware, and the distance
between the mounting holes in the two posts must be 18.31 inches .063 inches (as specified in the
Electronic Industries Association (EIA)–310-C standard).
Figure 1 shows the three types of equipment racks described in this document:
•Figure 1a shows a 2-post rack, which is usually a freestanding enclosed cabinet with two
mounting posts in the front.
•Figure 1b shows a Telco-type rack, which comprises two adjacent mounting posts that are
usually secured to the floor and/or to an overhead structure.
•Figure 1c shows a 4-post rack, which is usually a freestanding open rack, which can be either
open or enclosed.
Figure 1 Equipment Rack Types
Caution Before installing the chassis in a rack or wiring closet, read the section “Safety
Guidelines” on page 8 to familiarize yourself with the proper site and environmental conditions.
Failure to read and follow these guidelines could result in an bodily injury or damage to the system
chassis or components. This procedure requires two or more people to perform.
H2348
a b c

Cisco 7000 and Cisco 7507 Rack-Mount Kit Installation Instructions 3
Rack-Mount Kit Overview
Rack-Mount Installation Summary
Following is a summary of the installation procedures required to rack-mount the chassis. This
summary is informational and is not intended to replace the actual procedures required to
rack-mount the chassis.
Following is a summary of procedures:
1Read the section “Prerequisites” starting on page 7.
2Verify that all mounting kit hardware is available.
3Install the brackets on the rack posts.
4Attach the spanner bars between the brackets.
5Attach the chassis ears to the chassis.
6Install the chassis in the rack.
Throughout these installation procedures, refer to Figure 2, Figure 3, and Figure 4, in addition to the
illustrations provided in the specific installation sections.
Mounting Kit Hardware
The mounting kit comprises two brackets, two chassis ears (each holds two captive grommets), and
fasteners (screws). The brackets and ears are identical. On each bracket, the inner side has a turned
ledge at the bottom to support the chassis, and shielding to provide electrical isolation between the
chassis and the rack. At the front of each bracket is a flange with five mounting holes at the top and
three at the bottom.
Each of the two brackets mounts to a rack post with three 10-32 x 5/8-inch, Phillips pan-head
screws, which are provided. The front of each bracket attaches to the front of the rack post, and the
remainder of the bracket cantilevers off the post. At the bottom of each bracket, a ledge provides a
shelf for the bottom sides of the chassis.
A spanner bar on each bracket hooks into the opposite bracket to maintain an exact distance between
the two brackets at both the ends attached to the rack posts and unattached ends. The spanner bars
prevent the two brackets from separating. (See Figure 11 on page 19.)

4Cisco 7000 and Cisco 7507 Rack-Mount Kit Installation Instructions
Rack-Mount Kit Overview
Figure 2 shows the components in this mounting kit.
Figure 2 Rack-Mount Kit Components
Each of the chassis ears attaches to a side of the chassis with two M4 x 10-mm, Phillips, flat-head
screws). When the chassis is in the rack, the mounting strips on the chassis ears attach to the
rack-mounting posts with four 10-32 x 5/8-inch, Phillips, pan-head screws. The ledges at the bottom
of the brackets support the weight of the chassis. The ears are not weight-bearing fixtures, but
prevent the chassis from sliding out of the rack horizontally.
You can attach the ears to either the front or back of the chassis, whichever end you will place at the
most accessible end of the rack. For most installations, we recommend that you attach the ears to the
interface processor end (rear) so that you can have access to the power supplies, processor slots, and
all status LEDs.
H2292
M4 x 10-mm long Phillips
flat-head screws (to attach
ears to chassis)
10-32 x 5/8-inch long Phillips
pan-head screws with integral
square cone washers
(for mounting brackets and
chassis ears to rack posts
)
Chassis ear with
captive sliding
grommets
Bracket

Cisco 7000 and Cisco 7507 Rack-Mount Kit Installation Instructions 5
Rack-Mount Kit Overview
In Telco-type installations, you can install the chassis so that the ends of the chassis are
approximately centered on two posts. Figure 3 shows a typical center-mount installation.
Caution To maintain a safe center of gravity in Telco-type installations (shown in Figure 3), the
front and rear of the chassis are approximately centered on the mounting posts.
Figure 3 Typical Center-Mount Installation
In a 2-post, 4-post, or Telco-type installation, you can flush-mount the chassis so that the end of the
chassis is flush with the rack posts. (When mounting the non-interface processor end, the front is
actually recessed 1 inch into the rack to protect the plastic front bezel.) Multiple-chassis rack kits
can be stacked in a rack with little or no clearance between the brackets. You can remove the four
chassis feet after mounting the chassis in the rack.
H2296

6Cisco 7000 and Cisco 7507 Rack-Mount Kit Installation Instructions
Rack-Mount Kit Overview
Figure 4 shows a typical flush-mount installation.
Figure 4 Typical Flush-Mount Installation—For Telco Racks Bolted to the Floor
UPPER
POWER LOWER
POWER NORMAL
Cisco 7000
H2293

Cisco 7000 and Cisco 7507 Rack-Mount Kit Installation Instructions 7
Prerequisites
Prerequisites Before you begin this installation, review the safety guidelines in this section to avoid injuring
yourself or damaging the equipment. This section also provides descriptions of the tools and parts
you need to perform this installation, and guidelines for planning the rack location so that you can
access the system components when necessary and maintain trouble-free operation.
If you are mounting a chassis that is already installed, you will need to disconnect all power and
interface cables from the back of the chassis. Be sure to label the cables to avoid confusion when
you reconnect them to the interface ports. The configuration worksheets provided near the end of
thisdocumentcanhelpyoureconnectthecablestothecorrectportsifyoumakeacopyandcomplete
it as you disconnect cables from the chassis. (For the Cisco 7000, see Figure 16 on page 27, and for
the Cisco 7507, see Figure 17 on page 28.)
Warning This warning symbol means danger. You are in a situation that could cause bodily injury.
Before you work on any equipment, be aware of the hazards involved with electrical circuitry and
be familiar with standard practices for preventing accidents.
Waarschuwing Dit waarschuwingssymbool betekent gevaar. U verkeert in een situatie die
lichamelijk letsel kan veroorzaken. Voordat u aan enige apparatuur gaat werken, dient u zich bewust
te zijn van de bij elektrische schakelingen betrokken risico's en dient u op de hoogte te zijn van
standaard maatregelen om ongelukken te voorkomen.
Varoitus Tämävaroitusmerkkimerkitseevaaraa.Olet tilanteessa,joka voijohtaaruumiinvammaan.
Ennen kuin työskentelet minkään laitteiston parissa, ota selvää sähkökytkentöihin liittyvistä
vaaroista ja tavanomaisista onnettomuuksien ehkäisykeinoista.
Attention Ce symbole d'avertissement indique un danger. Vous vous trouvez dans une situation
pouvant causer des blessures ou des dommages corporels. Avant de travailler sur un équipement,
soyez conscient des dangers posés par les circuits électriques et familiarisez-vous avec les
procédures couramment utilisées pour éviter les accidents.
Warnung Dieses Warnsymbol bedeutet Gefahr. Sie befinden sich in einer Situation, die zu einer
Körperverletzung führen könnte. Bevor Sie mit der Arbeit an irgendeinem Gerät beginnen, seien Sie
sich der mit elektrischen Stromkreisen verbundenen Gefahren und der Standardpraktiken zur
Vermeidung von Unfällen bewußt.
Avvertenza Questo simbolo di avvertenza indica un pericolo. La situazione potrebbe causare
infortuni alle persone. Prima di lavorare su qualsiasi apparecchiatura, occorre conoscere i pericoli
relativiaicircuiti elettrici ed essere alcorrentedelle pratiche standard per la prevenzionedi incidenti.
Advarsel Dette varselsymbolet betyr fare. Du befinner deg i en situasjon som kan føre til
personskade. Før du utfører arbeid på utstyr, må du vare oppmerksom på de faremomentene som
elektriske kretser innebærer, samt gjøre deg kjent med vanlig praksis når det gjelder å unngå ulykker.
Aviso Este símbolo de aviso indica perigo. Encontra-se numa situação que lhe poderá causar danos
físicos. Antes de começar a trabalhar com qualquer equipamento, familiarize-se com os perigos
relacionados com circuitos eléctricos, e com quaisquer práticas comuns que possam prevenir
possíveis acidentes.
¡Advertencia! Este símbolo de aviso significa peligro. Existe riesgo para su integridad física.
Antes de manipular cualquier equipo, considerar los riesgos que entraña la corriente eléctrica y
familiarizarse con los procedimientos estándar de prevención de accidentes.
Varning! Denna varningssymbol signalerar fara. Du befinner dig i en situation som kan leda till
personskada. Innan du utför arbete på någon utrustning måste du vara medveten om farorna med
elkretsar och känna till vanligt förfarande för att förebygga skador.

8Cisco 7000 and Cisco 7507 Rack-Mount Kit Installation Instructions
Prerequisites
Safety Guidelines
Review the following guidelines to help ensure your safety and protect the equipment from damage
during the installation.
Warning Before working on a system that has an on/off switch, turn OFF the power and unplug
the power cord. (For translations of this safety warning, refer to the section “Power Disconnection
Warning” on page 29.)
Warning Do not touch the power supply when the power cord is connected. For systems with a
power switch, line voltages are present within the power supply even when the power switch is off
and the power cord is connected. For systems without a power switch, line voltages are present
within the power supply when the power cord is connected. (For translations of this safety warning,
refer to the section “Power Supply Warning” on page 29.)
Warning Before working on a chassis or working near power supplies, unplug the power cord on
AC units; disconnect the power at the circuit breaker on DC units. (For translations of this safety
warning, refer to the section “Power Supply Disconnection Warning” on page 30.)
Warning This unit might have more than one power cord. To reduce the risk of electric shock,
disconnect the two power supply cords before servicing the unit. (For translations of this safety
warning, refer to the section “Electric Shock Warning” on page 31.)
Working with Electrical Equipment
When working with any electrical equipment, the following guidelines will help to ensure your
safety and protect the equipment. This list does not include all potentially hazardous situations, so
be alert.
•Never try to lift the chassis by yourself; two people are required to lift it.
•Always turn all power supplies off and unplug all power cords before installing or removing a
chassis.
•Keep the chassis area clear and dust free during and after the installation.
•Keep tools and chassis components away from walk areas.
•Keep your path clear between the chassis and the rack. When carrying large, heavy equipment
such as the chassis, obstacles such as hand tools, cables, or components not be easily visible and
can cause accidents.
Lifting the Chassis Safely
The chassis weighs 76 pounds (34.5 kilograms [kg]) when empty (with no interface processors or
power supplies installed) and 145 pounds (65.8 kg) with two power supplies and seven processor
modules installed. The chassis is not intended to be moved frequently. Before you install the router,
ensure that your site is properly prepared, so you can avoid having to move the chassis later to
accommodate power sources and network connections.
Whenever you lift the chassis or any heavy object, follow these guidelines:
•Never attempt to lift the chassis by yourself. The size and weight of the chassis require two
people to safely lift and move it without causing injury or damaging the equipment.

Cisco 7000 and Cisco 7507 Rack-Mount Kit Installation Instructions 9
Prerequisites
•Ensure that your footing is solid and balance the weight of the object between your feet.
•Lift the object slowly; never move suddenly or twist your body as you lift.
•Keep your back straight and lift with your legs, not your back. If you must bend down to lift the
chassis, bend at the knees, not at the waist, to reduce the strain on your lower back muscles. (See
Figure 5.)
•Grasp the underside of the chassis exterior with both hands.
Warning Two people are required to lift the chassis. Grasp the chassis underneath the lower edge
and lift with both hands. To prevent injury, keep your back straight and lift with your legs, not your
back. To prevent damage to the chassis and components, never attempt to lift the chassis with the
handles on the power supplies or on the interface processors, or by the plastic panels on the front of
the chassis. These handles were not designed to support the weight of the chassis. (For translations
of this safety warning, refer to the section “Chassis Lifting Warning” on page 32.)
Figure 5 Lifting Safely
Caution To avoid damage to power supplies and interface processors, never attempt to lift the
chassis using the handles on the power supplies or the interface processors. These handles were not
designed to support the weight of the chassis.
Note The following warning is for units equipped with DC-input power supplies.
Warning Before performing any of the following procedures, ensure that power is removed from
the DC circuit. To ensure that all power is OFF, locate the circuit breaker on the panel board that
services the DC circuit, switch the circuit breaker to the OFF position, and tape the switch handle of
the circuit breaker in the OFF position. (For translations of this safety warning, refer to the section
“DC Power Disconnection Warning” on page 33.)
•Remove all power supplies before lifting the chassis. Each supply weighs 20 pounds (9.1 kg).
•Leave the Route Processor (RP), Switch Processor (SP) (or Silicon Switch Processor [SSP]), and
all interface processors installed; each weighs less than five pounds (2.3 kg).
•Always disconnect all external cables before lifting or moving the chassis.
H2336

10 Cisco 7000 and Cisco 7507 Rack-Mount Kit Installation Instructions
Prerequisites
Safety with Electricity
Follow these basic guidelines when working with any electrical equipment:
•Before beginning any procedures requiring access to the chassis interior, locate the emergency
power-off switch for the room in which you are working.
•Disconnect all power and external cables before installing or removing a chassis.
•Do not work alone if potentially hazardous conditions exist.
•Never assume that power is disconnected from a circuit; always check.
•Do not perform any action that creates a potential hazard to people or makes the equipment
unsafe.
•Carefully examine your work area for possible hazards such as moist floors, ungrounded power
extension cables, and missing safety grounds.
Warning Do not work on the system or connect or disconnect cables during periods of lightning
activity. (For translations of this safety warning, refer to the section “Lightning Activity Warning”
on page 34.)

Cisco 7000 and Cisco 7507 Rack-Mount Kit Installation Instructions 11
Prerequisites
When you replace the power supplies, remember to engage all of the safety features on each supply.
The power supplies feature the following three safety interlock features:
•A safety interlock on/off switch (see Figure 6) prevents the power supply from being removed
from the chassis when the power supply switch is in the on (|) position. When the switch is on, a
metal tab extends into a slot in the chassis. When the switch is turned off (O), the tab retracts into
the power supply housing and clears the slot.
•A captive installation screw at the top of the power supply front panel provides electrical
grounding and prevents the power supply from vibrating or sliding out of the bay and dislodging
from the power connectors in the backplane.
•A cable retention clip prevents the power supply power cord from being accidentally pulled out
of the power supply socket.
For a complete description of the power supply, refer to the Cisco 7000 Hardware Installation and
Maintenance or Cisco 7507 Hardware Installation and Maintenance publications.
Figure 6 Power Supply Safety Interlocks—AC-Input Power Supply Shown
Equipment Rack Considerations
This kit is suitable for mounting the chassis in most 19-inch 2-post, 4-post, or Telco-type racks that
conform to the EIA-310-C standard. The brackets, which support the chassis, cantilever off two rack
posts. You can mount the chassis with either end approximately flush with the two rack posts, or, in
Telco-type installations, you can center-mount the chassis. Before proceeding, review the guidelines
in this section and ensure that you have planned your installation carefully to avoid hazards such as
top-heavy or unbalanced racks, or cables or equipment that obstruct traffic paths or access to
equipment.
Before using a particular rack, check for obstructions (such as a power strip) that could impair access
to the processor modules or power supplies at the interface processor end, or to the chassis panels
that provide access to the internal field replaceable units (FRUs) at the non-interface processor end
of the chassis. Figure 7 shows the chassis footprint and outer dimensions, and the clearance required
to remove or install FRUs.
Safety interlock
switch
Locking device
in ON and
locked positions
I
O
H1315a
Cable-retention clip

12 Cisco 7000 and Cisco 7507 Rack-Mount Kit Installation Instructions
Prerequisites
Rack Stability When installing the chassis in any rack that is not secured to the floor or overhead structure, place
the chassis in the lower half of the rack. A fully-configured chassis weighs 145 pounds (65.8 kg),
and a shift in the weight distribution (during the installation or later as a result of disturbance to the
rack) can cause the rack to fall.
Figure 7 Chassis Footprint and Outer Dimensions
15.060"
5.095"
16.916"
1.220"
Plastic front panel end
Foot diameter
1.125
4 places
Power supply/interface processor end
Foot thread size
5/16"
4 places
H1608a
25"
17.5"
4"
16"
13"
16" clearance required
for power supply removal
10" clearance required for
interface processor removal
(28" including
power cord)

Cisco 7000 and Cisco 7507 Rack-Mount Kit Installation Instructions 13
Prerequisites
Also, when installing the chassis in Telco-type racks, ensure that the rack is secured to the floor or
otherwise stabilized. Center-mount the chassis if possible (and practical for your installation). Doing
so places the center of gravity closest to the center of the mounting posts. Figure 8 shows the center
of gravity for both center-mounted and flush-mounted installations. (The center of gravity will shift
somewhat depending on which end of the chassis is positioned at the front of the rack.)
Figure 8 Chassis Center of Gravity for Flush-Mount Configurations
As an alternative, you can install an equipment shelf in the rack if both the rack dimensions allow
the router to be secured to the shelf, and the overall configuration permits safe installation and
access. If you install a customized shelf or install the router on slides, be aware of potential hazards
of tip-over from an unbalanced rack.
Warning To prevent bodily injury when mounting or servicing this unit in a rack, you must take
special precautions to ensure that the system remains stable. The following guidelines are provided
to ensure your safety:
—This unit should be mounted at the bottom of the rack if it is the only unit in the rack.
—When mounting this unit in a partially filled rack, load the rack from the bottom to the top
with the heaviest component at the bottom of the rack.
—If the rack is provided with stabilizing devices, install the stabilizers before mounting or
servicing the unit in the rack. (For translations of this safety warning, refer to the section
“Chassis Warning—Rack-Mounting and Servicing” on page 35.)
Warning Do not use a ramp inclined at more than 10 degrees. (For translations of this safety
warning, refer to the section “Ramp Warning” on page 37.)
Bracket 7000 chassis
Telco rack
H2350
Bracket
Telco rack
Center of gravity

14 Cisco 7000 and Cisco 7507 Rack-Mount Kit Installation Instructions
Prerequisites
Rack Dimensions and Site Layout
Forcompletesite requirementsand recommendations,referto theCisco 7000 HardwareInstallation
and Maintenance or Cisco 7507 Hardware Installation and Maintenance publications. To help
maintain trouble-free operation, consider the following precautions when planning your rack
installation:
•Place the chassis in a location with sufficient access to power and network interface cables. Avoid
straining cables or routing them near traffic paths or power cables (which can cause interference).
•During the installation, allow sufficient working space around the rack. You will need at least
three feet in front of the rack to lift the chassis and insert it, and two feet of clearance outside the
power supply bays to insert power supplies.
•After installation, allow at least two to three feet of clearance behind the rack for maintenance.
Because the interface processor end of the router provides access to the power switches,
processor slots, and status LEDs, we recommend that you mount the interface processor end at
the most accessible side of the rack. You should be able to access both ends of the router without
having to remove it from the rack.
•Some equipment racks provide a power strip along the length of one of the rear mounting strips.
If your rack has this feature, consider the position of the strip when planning fastener points and
determine whether you will install the chassis from the front or the rear of the rack. Power
supplies are installed in the rear of the chassis, and a power strip might partially block access to
the bay.
•If your rack is enclosed, or if it has a door on the front, temporarily remove the door to provide
enough clearance for installation. If the rack does not provide a rear door for access to the rear
chassis panel, install the chassis backwards in the rack so you can access the FRUs and spare
parts, and view the LEDs.
Rack Ventilation Planning a proper location for the router and the layout of your equipment rack is essential for
successful system operation. Equipment placed too close together or inadequately ventilated can
cause overtemperature conditions inside the chassis. In the chassis, the cooling air is drawn in
through the front of the chassis, and the exhaust air is forced out the back between the interface
processor faceplates.
The following guidelines are recommended to ensure a sufficient flow of cooling air to the chassis:
•Place the chassis in a location that enables the flow of cooling air through the chassis. The chassis
blower draws cooling air in through the front chassis panel, past the internal components, and out
the back panel. Inhibiting the intake, blocking the exhaust, or allowing heated air to enter the
intake can cause overtemperature conditions and cause the system to shut down.
•Because the intake and exhaust ports for cooling air are located on the front and rear of the
chassis, multiple chassis can be stacked with little or no clearance in a rack. You can remove the
four feet on the chassis after the chassis is mounted in the rack.
•Install the chassis in an open rack whenever possible. If installation in an enclosed rack is
unavoidable, ensure that the rack has adequate ventilation or an exhaust fan.
•Conversely, a ventilation system that is too powerful in a closed rack may also prevent cooling
by creating negative pressure around the chassis and redirecting the air away from the chassis
intake vent. If necessary, operate the chassis with the rack open.
•Equipment near the bottom of a rack may generate excessive heat that is drawn upward and into
the intake ports of equipment above, leading to overtemperature conditions in the chassis at or
near the top of the rack.

Cisco 7000 and Cisco 7507 Rack-Mount Kit Installation Instructions 15
Prerequisites
List of Parts and Tools
This section lists the tools you will need to complete this installation and the parts that are shipped
as part of the rack-mount kit. Ensure that you have all the tools and parts required so that you can
complete the installation without interruption.
Tools Required You will need the following tools to install the mounting hardware and chassis in the rack:
•Number 2 Phillips screwdriver
•One 7/16-inch, open-end (or adjustable) wrench if you will remove the chassis feet
•Tape measure or level (both optional)
•Ohmmeter if your installation requires the chassis to be electrically isolated from the rack
You also need the following tools to replace the power supplies after mounting the chassis:
•A number 2 Phillips or 1/4-inch, flat-blade screwdriver for the captive screw. (Because of
ongoing product improvements, some power supplies use slotted screws, and others use Phillips
screws.)
•If cables from other equipment fall in front of the power supply bays, you will need cable ties to
temporarily anchor the cables out of the way while you install the power supplies.
Before beginning the power supply installation, check the captive installation screws on all power
supplies to determine which tools you will need.
Parts List Table 1 lists the parts that are included in the rack-mount kit. To verify that you received all the parts
listed, refer to Table 1 and to Figure 2 on page 4. If any are missing, contact a service representative
for assistance. (Refer to the section “Cisco Information Online” at the end of this document.)
Table 1 Rack-Mount Kit Parts Checklist
Note As you perform the installation, refer to Figure 2, on page 4, and to the detailed illustrations
that follow.
Quantity Part Description Received
2 Mounting brackets (left and right are identical), each with an attached spanner bar
2 Chassis ears with captive grommets (left and right ears are identical)
4 M4 x 10-mm LG Phillips flat-head screws
10 10-32 x 5/8'' LG Phillips pan-head screws with integral square cone washers

16 Cisco 7000 and Cisco 7507 Rack-Mount Kit Installation Instructions
Installation
Installation Thefollowingsectionsdescribe the proceduresfor mounting the chassis in a 19-inch equipment rack
with two or four mounting posts. Before proceeding, review the guidelines and recommendations in
the section “Prerequisites” on page 7 to protect your safety, to maintain sufficient clearance around
the rack during and after the installation, and to ensure proper airflow through the chassis after the
installation.
Warning To avoid potentially serious bodily injury, this procedure requires two or more people to
perform.
Some equipment racks provide a power strip along the length of one of the rear mounting strips. If
your rack has this feature, we recommend that you fasten the brackets and install the interface
processor end of the chassis at the opposite side of the rack.
Installing the Brackets
The two brackets are identical. The inner side of each bracket has a ledge at the bottom to support
the undersides of the chassis, and shielding to provide electrical isolation between the chassis and
the rack. A flange on the front of each bracket provides five mounting holes at the top, and three at
the bottom. Mount the bracket with the flange in front of the rack post, and with the inner (shielded)
side facing the center of the rack. The ledge should be at the bottom of the bracket. (See Figure 9.)
Figure 9 Positioning a Bracket
H2288
Rack post
Flange
Shielded side

Cisco 7000 and Cisco 7507 Rack-Mount Kit Installation Instructions 17
Installation
After you install both brackets in the rack, you must connect the spanner bar on each bracket to the
opposite bracket. The spanner bars are required to prevent both ends of the brackets (at the front and
rear of the rack) from separating or drifting apart. The cutouts in the brackets are to accommodate
the ear brackets that attach to the chassis to the rack. (Refer to Figure 2 on page 4.)
To install the brackets in the rack, you will secure each bracket to a rack post with three
10-32 x 5/8-inch Phillips, pan-head screws. If possible (if the holes line up), use the top-most and
bottom most mounting holes in the bracket. Always use the bottom mounting hole on the bracket. If
the top mounting hole does not line up with a hole in the rack post, use one of the other two holes
near the top of the bracket.
Mounting the Brackets to the Rack Posts
Follow these steps to mount each bracket to a rack post:
Step 1 Measure the space between the inner edges of the left front and right front equipment
rack-mountingposts to ensure that itis at least 17.72 inches. Thechassis is 17.5 inches wide
and must fit between the mounting posts.
Step 2 Measure the distance between the holes in the mounting posts to ensure that it is
18.31 inches ( .063 inches). Make several measurements down the length of the posts to
ensure they are parallel.
Step 3 Holding the first bracket in the position shown in Figure 10, place the bracket on the inner
side of the rack post, with the flanged front edge of the bracket in front of the rack post.
Figure 10 Installing a Bracket on a Rack Post—Left Bracket Shown
H2289
Rack post
Flange
Shielded side

18 Cisco 7000 and Cisco 7507 Rack-Mount Kit Installation Instructions
Installation
Step 4 Slide the bracket up and down along the mounting post to align the mounting holes in the
bracket with those in the rack post.
Step 5 While supporting the bracket with one hand, use the other hand to insert a 10-32 x 5/8-inch,
Phillips pan-head screw through the bottom mounting hole on the front of the bracket and
into the rack post. (See Figure 10.)
Note Fingertighten the pan-head screw, butdo not tighten it because you might need to adjust these
screws when attaching the spanner bars later.
Step 6 Secure the top of the bracket to the rack with two pan-head screws. Finger tighten the
screws.
Step 7 Repeat Steps 3 through 6 for the remaining bracket. Use a level or tape measure to ensure
that the two brackets are level in the rack.
Caution To ensure adequate space between the brackets, and to ensure the chassis stays in the rack,
push the brackets as far apart as possible before tightening the screws that secure them.
Step 8 Measure the horizontal distance between the left and right brackets. The distance must be
greater than 17.5 inches for the chassis to clear the brackets; adjust as required.
To position and secure the spanner bars, proceed to the next section.
Securing the Spanner Bars
The spanner bar on each bracket hooks into the opposite bracket to maintain a fixed spacing between
thetwobrackets. The spanner bars preventthe brackets from separating or drifting apart, particularly
at the ends that are not secured to the rack. To connect the spanner bars, connect the hook at the
unattached end of each spanner bar to a screw at the bottom of the opposite bracket.
Follow these steps to secure the spanner bars:
Step 1 Loosen the 10-32 x 5/8-inch, Phillips pan-head screw that is located in the end of the ledge
of the right-side bracket. (See Figure 11b.) This screw is the anchor for the spanner bar.
Step 2 Remove the tape that secures the spanner bar on the left bracket, and swing the bar down
(see Figure 11a) over the anchor screw on the opposite bracket. (See Figure 11b.)
Step 3 If the spanner bar does not reach the opposite bracket, loosen the pan-head screws to allow
more play between the brackets.
Step 4 When the first spanner bar is secured, go around to the other side of the rack and repeat
Steps 1 through 3 to fasten the remaining spanner bar to its anchor screw. (See Figure 11c.)

Cisco 7000 and Cisco 7507 Rack-Mount Kit Installation Instructions 19
Installation
Figure 11 Positioning and Fastening a Spanner Bar
Caution To ensure adequate space between the brackets and a proper chassis fit, push the brackets
as far apart as possible before tightening the screws that secure them and the spanner bars.
Step 5 When both spanner bars are in place, use a number 2 Phillips screwdriver to tighten the six
pan-head screws that secure the brackets to the rack-mounting posts, and the two anchor
screws that secure the spanner bars. When tightening the pan-head screws on a bracket,
push the bracket outward, away from the center of the rack, to ensure that the brackets
remain at least 17.5 inches apart (otherwise the chassis will not fit between the brackets).
This completes the bracket installation. To install the ears on the chassis, proceed to the next section.
H2294
a
c
b

20 Cisco 7000 and Cisco 7507 Rack-Mount Kit Installation Instructions
Installation
Attaching the Chassis Ears
The ears attach directly to the chassis with four M4 x 10-mm, flat-head screws. Attach the ears to
the chassis before you slide the chassis onto the brackets and back into the rack. After you slide the
chassis into the rack, insert a 10-32 x 5/8-inch pan-head screw through each of the captive grommets
on the ears and through the rack-mounting strips. The ears do not bear the weight of the chassis, but
prevent it from walking, or sliding horizontally out of the rack.
You can mount the ears on either the front or rear of the chassis, whichever end will be in the front
of the rack. We recommend that you attach them to the interface processor end of the chassis, so the
power supplies and processor modules will be accessible at the front of the rack.
In most four-post racks, you will attach the ears with the mounting strip flush with the end of the
chassis. Figure 4, on page 6, shows a typical flush-mount installation. In Figure 12, the example
insert on the right shows how the ears attach to the chassis for flush mounting.
In some Telco-type racks, it is more practical to center-mount the chassis. To do so, flip the ears
around so that the mounting strips are near the center of the side of the chassis. Figure 3, on page 5,
shows a typical center-mount installation. In Figure 12, the example insert on the left shows how the
ears attach to the chassis for center mounting.
Figure 12 Installing the Ears on the Chassis
H2297
OR
Center-mount
position
Flush-mount
position