Cisco ASR-920-24TZ-M Installation Guide

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Cisco ASR-920-24SZ-IM, ASR-920-24SZ-M, ASR-920-24TZ-M Aggregation Services Router Hardware Installation Guide
Chapter 2 Preparing for Installation
Site Planning
Rack-Mounting Guidelines
The following sections provide guidelines for rack-mounting the Cisco ASR 920-24SZ-IM,
ASR-920-24SZ-M, ASR-920-24TZ-M Router:
• Precautions for Rack-Mounting, page 2-16
• Rack Selection Guidelines, page 2-16
• Equipment Rack Guidelines, page 2-17
Precautions for Rack-Mounting
The following rack-mount guidelines are provided to ensure your safety:
• Ensure that the rack is level and stable before extending a component from the rack.
• Ensure that proper airflow is provided to the components in the rack.
• Do not step on or stand on any component or system when servicing other systems or components
in a rack.
• When mounting the Cisco ASR 920-24SZ-IM, ASR-920-24SZ-M, ASR-920-24TZ-M Router 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.
Rack Selection Guidelines
The Cisco ASR 920-24SZ-IM, ASR-920-24SZ-M, ASR-920-24TZ-M Router can be mounted in most
two-post or four-post, 19-inch equipment racks that comply with the Electronic Industries Association
(EIA) standard for equipment racks (EIA-310-D 19-inch). The rack must have at least two posts with
mounting flanges to mount the chassis.
Caution When mounting a chassis in any type of rack equipment, ensure that the inlet air to the chassis does not
exceed 70° C.
The distance between the center lines of the mounting holes on the two mounting posts must be 18.31
inch ± 0.06 inch (46.50 cm ± 0.15 cm). The rack-mounting hardware included with the chassis is
suitable for most 19-inch equipment racks.
Consider installing the Cisco ASR 920-24SZ-IM, ASR-920-24SZ-M, ASR-920-24TZ-M Router in a
rack with the following features:
• NEBS-compliant, 19-inch wide (48.3-cm) rack.
• EIA or European Telecommunications Standards Institute (ETSI) hole patterns in the mounting
rails. The required mounting hardware is shipped with the Cisco ASR 920-24SZ-IM,
ASR-920-24SZ-M, ASR-920-24TZ-M Router. If the rack that you plan to install the system in has
metric-threaded rails, you must provide your own metric-mounting hardware.
• Perforated top and open bottom for ventilation to prevent overheating.
• Leveling feet for stability.

Cisco ASR-920-24TZ-M Specifications

General

Brand	Cisco
Model	ASR-920-24TZ-M
Category	Network Router
Language	English