Rack-Mounting Guidelines; Precautions For Rack-Mounting; Rack Selection Guidelines - Cisco ASR-920-24SZ-IM Hardware Installation Manual

Preparing for Installation
electrical surge suppression and shielding of signal cables in your Cisco ASR 920-24SZ-IM, ASR-920-24SZ-M,
ASR-920-24TZ-M Router operating environment.

Rack-Mounting Guidelines

The 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

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
• When mounting the Cisco ASR 920-24SZ-IM, ASR-920-24SZ-M, ASR-920-24TZ-M Router in a
• If the rack is provided with stabilizing devices, install the stabilizers before mounting or servicing the

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 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.
• Perforated top and open bottom for ventilation to prevent overheating.
• Leveling feet for stability.
rack.
partially filled rack, load the rack from the bottom to the top, with the heaviest component at the bottom
of the rack.
unit in the rack.
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.
Cisco ASR-920-24SZ-IM, ASR-920-24SZ-M, ASR-920-24TZ-M Aggregation Services Router Hardware Installation
Rack-Mounting Guidelines
Guide
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