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Cisco ASR 1000 Series Aggregation Services Routers Hardware Installation Guide
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Chapter 5      Preparing Your Site for Installation
Site Planning
Site Selection Guidelines
The Cisco ASR 1000 Series Routers require specific environmental operating conditions. Temperature, 
humidity, altitude, and vibration can affect the performance and reliability of the router. The following 
sections provide specific information to help you plan for the proper operating environment.
The Cisco ASR 1000 Series Routers are designed to meet the industry EMC, safety, and environmental 
standards described in the Regulatory, Safety, and Compliance Information for Cisco ASR 1000 Series 
Aggregation Services Routers document. 
Site Environmental Requirements
Environmental monitoring in the Cisco ASR 1000 Series router protects the system and components 
from damage caused by excessive voltage and temperature conditions. To ensure normal operation and 
avoid unnecessary maintenance, plan and prepare your site configuration before installation. After 
installation, make sure the site maintains the environmental characteristics as shown in Table 5-3.
Table 5-3 Cisco ASR 1000 Series Router Environmental Tolerances
Environmental Characteristic Minimum Maximum
Steady State Operating 0 degree C 50 degree C
(50 degrees C at 10,000 
feet)
Storage  –20 degrees C +70 degrees C
Humidity operating (noncondensing) 10% 90%
Humidity nonoperating (noncondensing) 5% 95%
Altitude operating: over allowable temperature 
range (0 to 50 degrees C)
–500 feet  10,000 feet
Altitude, nonoperating: over allowable temperature 
range
–1000 feet 50,000 feet
Thermal shock non-operating with change over time 
of 3 minute
–25 degrees C +70 degrees C
Thermal Shock - Operating at 2.5 degree C per 
minute
0 degrees C +50 degrees C