Cisco XR 12416 User Manual
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Preparing for Installation
Before installing the router, consider power and cabling requirements that must
be in place at your installation site, special equipment for installing the router, and
the environmental conditions your installation site must meet to maintain normal
operation. This chapter guides you through the process of preparing for router
installation.
The shipping package for the router is engineered to reduce the chances of product
damage associated with routine material handling experienced during shipment.
• The router should always be transported or stored in its shipping package in
the upright position.
• Keep the router in the shipping container until you have determined the
installation site.
Use the unpacking instructions included with the router to unpack it and inspect
all items for shipping damage. If an item appears damaged, contact a Cisco
customer service representative immediately.
This chapter contains the following installation topics:
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• Safety Guidelines, page 2-2
• Site Requirement Guidelines, page 2-7
• PRP Port Connection Guidelines, page 2-24
• Alarm Card Connection Guidelines, page 2-33
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Safety Guidelines
Safety Guidelines
Before you perform any procedure in this publication, review the safety
guidelines in this section to avoid injuring yourself or damaging the equipment.
In addition, be sure to review the safety warnings listed in the Regulatory
Compliance and Safety Information for Cisco 12000 Series Internet Routers
publication that accompanied your router before you begin router installation.
Note that the information in this section are guidelines and do not include every
potentially hazardous situation. When you install a router, always use common
sense and caution.
Safety with Equipment
• Cisco equipment operates safely when used in accordance with its
specifications and product-usage instructions.
• Never install equipment that appears damaged.
• Do not perform any action that creates a potential hazard to people or makes
the equipment unsafe.
• Never attempt to lift an object that might be too heavy for you to lift by
yourself.
• Do not wear loose clothing, jewelry, or other items that could get caught in
the router.
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• Keep tools and assembly components away from walk areas.
• Do not work alone if potentially hazardous conditions exist.
• Keep the work area clear and dust-free during and after installation. Do not
allow dirt or debris to enter into any laser-based components.
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Safety with Electricity
• The installation shall be in compliance with national and local electrical
codes: in the United States, National Fire Protection Association (NFPA) 70,
United States National Electrical Code; in Canada, Canadian Electrical Code,
part I, CSA C22.1; in other countries, International Electrotechnical
Commission (IEC) 60364, part 1 through part 7.
• Before you begin any procedures requiring access to the interior of the router,
locate the emergency power-off switch for the room in which you are
working.
• Disconnect all power source cables before installing or removing a router.
• Never assume that power has been disconnected from a circuit; always check.
• Carefully examine your work area for possible hazards such as moist floors,
ungrounded power extension cables, and missing safety grounds.
• Only a DC power source that complies with the safety extra-low voltage
(SELV) requirements in UL60950, CSA-C22.2 No. 60950, EN60950,
ACATS001, AS/NZS 60950,and IEC60950 can be connected to the line card
chassis DC-input power system.
• A line card chassis configured with the DC-input power system shall have a
readily accessible two-poled disconnect device incorporated in the fixed
wiring.
Safety Guidelines
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• The line card chassis requires short-circuit (overcurrent) protection to be
provided as part of the building installation.
• If an electrical accident occurs, proceed as follows:
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Use caution; do not become a victim. Disconnect power to the router.
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If possible, send another person to get medical aid; otherwise, assess the
condition of the victim and then call for help.
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Safety Guidelines
Preventing Electrostatic Discharge Damage
Many router components can be damaged by static electricity. Not exercising the
proper electrostatic discharge (ESD) precautions can result in intermittent or
complete component failures. To minimize the potential for ESD damage, always
use an ESD-preventive antistatic wrist strap (or ankle strap) and ensure that it
makes good skin contact.
Note Check the resistance value of the ESD-preventive strap periodically. The
measurement should be between 1 and 10 megohms.
Before you perform any of the procedures in this guide, attach an ESD-preventive
strap to your wrist and connect the leash to the chassis or to another grounded,
bare metal surface as shown in Figure 2-1.
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Chapter 2 Preparing for Installation
Figure 2-1 Connecting an ESD-Preventive Strap to the Router Chassis
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Safety Guidelines
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Safety Guidelines
Lifting Guidelines
A fully configured router can weigh as much as 275 pounds (lb)
(124.74 kilograms (kg)), while an empty chassis weighs 125 lb (56.7 kg). These
systems are 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
router later to accommodate power sources and network connections.
Use the following lifting guidelines to avoid injury to yourself or damage to the
equipment:
• Do not lift equipment alone; have another person help you to lift heavy
• Ensure that your footing is solid; balance the weight of the object between
• Lift the equipment slowly; never move suddenly or twist your body as you
• Keep your back straight and lift with your legs, not your back. When bending
Chapter 2 Preparing for Installation
equipment.
your feet.
lift.
down to lift equipment, bend at the knees (not at the waist), to reduce the
strain on your lower back muscles.
Caution To prevent equipment damage, never attempt to lift or tilt the router chassis using
the handles on the blower module or on line cards. These handles do not support
the weight of the chassis.
Compliance and Safety Information
The Cisco XR 12416 router is designed to meet the regulatory compliance and
safety approval requirements. Refer to the Regulatory Compliance and Safety
Information for the Cisco 12000 Series Router if you require additional
compliance information (see “Obtaining Documentation and Submitting a
Service Request” section on page -xiv for site information).
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Chapter 2 Preparing for Installation
Laser Safety
Some line cards are equipped with ports that can emit hazardous laser radiation
from the aperture when there is no cable connected to the port. This invisible
radiation can cause eye injury if you stare into the port.
Site Requirement Guidelines
Warning
To avoid eye injury, never stare into open line card ports.
Site Requirement Guidelines
This section provides the following site requirement guidelines that you must
consider before installing the router:
• Rack-Mounting Guidelines, page 2-7
• Air Flow Guidelines, page 2-14
• Temperature and Humidity Guidelines, page 2-16
• Power Connection Guidelines, page 2-16
• NEBS Supplemental Unit Bonding and Grounding Guidelines, page 2-21
• Site Wiring Guidelines, page 2-23
Rack-Mounting Guidelines
The router can be mounted in most 2-post, 4-post, or telco-type 19-inch
equipment racks that comply with the Electronics Industries Association (EIA)
standard for equipment racks (EIA-310-D). The rack must have at least two posts
with mounting flanges to mount the router chassis. The distance between the
center lines of the mounting holes on the two mounting posts must be 18.31 inches
± 0.06 inch (46.50 cm ± 0.15 cm). The rack-mounting hardware included with the
router is suitable for most 19-inch equipment racks or telco-style frames.
Figure 2-2 shows examples of typical 2-post, 4-post, and telco-type equipment
racks.
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Site Requirement Guidelines
Figure 2-2 Equipment Rack Types
a b c
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Enclosed Rack
Open Rack
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Figure 2-2a shows a free-standing, enclosed rack with two mounting posts in the
front. The router should not be installed in this type of enclosed rack, because the
router requires an unobstructed flow of cooling air to maintain acceptable
operating temperatures for its internal components. Installing the router in any
type of enclosed rack—even with the front and back doors removed—could
disrupt the air flow, trap heat next to the chassis, and cause an overtemperature
condition inside the router.
Figure 2-2b shows a free-standing, 4-post open rack with two mounting posts in
the front and two mounting posts in the back. The mounting posts in this type of
rack are often adjustable so that you can position the rack-mounted unit within the
depth of the rack rather than flush-mount with the front of the rack.
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Chapter 2 Preparing for Installation
Telco Rack
Figure 2-2c shows a telco-type rack. The telco-type rack is an open frame
consisting of two posts tied together by a cross-bar at the top and a floor stand at
the bottom.
This type of rack is usually secured to the floor and sometimes to an overhead
structure or wall for additional stability. The router chassis can be installed in the
telco-type rack either in a front-mounted position or a center-mounted position
(Figure 2-3).
• In the front-mounted position, you secure the chassis rack-mounting brackets
• In the center-mounted position, you secure a set of optional center-mount
Site Requirement Guidelines
directly to the rack posts.
brackets to the rack posts. The chassis rack-mounting flanges are then
secured to the center-mount brackets. The center-mounted position moves the
center of gravity of the chassis closer to the vertical axis of the rack posts,
which adds to the stability of the rack installation.
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Chapter 2 Preparing for Installation
Site Requirement Guidelines
Figure 2-3 Front-Mounted and Center-Mounted Installation in a Telco Rack
Front-mount rail
Cisco 12016
chassis
Center-mount
bracket
Front-mounted chassis
in telco rack
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Center-mounted chassis
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in telco rack
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Chapter 2 Preparing for Installation
Site Layout and Equipment Dimensions
To help maintain trouble-free operation, adhere to the following precautions when
planning your rack installation:
• Ensure the site of the rack includes provisions for source AC or DC power,
grounding, and network interface cables.
• Allow sufficient space to work around the rack during the installation. You
need:
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At least 3 feet adjacent to the rack to move, align, and insert the chassis.
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At least 2 feet in front of the power shelf to insert power entry modules.
• Maintain at least 24 inches (61 cm) of clearance in front of and behind the
chassis for maintenance after installation.
• To mount the router between two posts or rails, the usable aperture (the width
between the inner edges of the two mounting flanges) must be at least
17.7 inches (45.0 cm).
• When fully populated with cards, the router can weigh as much as 440 lb
(200 kg). Mount the router so that the bottom of the router chassis is no higher
than 10 inches (25.4 cm) from the floor to keep the center of gravity of the
rack as low as possible. To maintain equipment rack stability and to ensure
your safety, make sure you install any stabilizing devices provided before you
install the router.
• If you use a telco-style rack, the weight of the chassis is cantilevered off of
the two rack posts. Make sure that:
Site Requirement Guidelines
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The weight of the router does not make the frame unstable.
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The frame is bolted to the floor and is secured to the building structure
using either wall brackets or overhead brackets.
• When mounting the router in a telco-type rack or 4-post rack, be sure to use
all of the screws provided to secure the chassis to the rack posts.
• For theCisco XR 12416 router, the mounting rails on a 4-post rack must be
recessed no more than 1.5 inches for the front door to fully open and close
and to provide adequate room for cable routing.
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