Juniper Networks M160 Connection to Building Structure, Routing Node Environmental Specifications

M160 Internet Router Hardware Guide

Connection to Building Structure

Always secure the rack to the structure of the building. If your geographical area is subject to earthquakes, bolt the rack to the floor. For maximum stability, also secure the rack to ceiling brackets. For more information, see “Rack-Mounting Requirements and Warnings” on page 240.

Clearance Requirements for Airflow and Hardware Maintenance

When planning the installation site, you need to allow sufficient clearance around the rack (see Figure 27):

For the cooling system to function properly, the airflow around the chassis must be unrestricted. Figure 20 depicts the airflow in the router.

For service personnel to remove and install hardware components, there must be adequate space at the front and back of the router. Allow at least 24 in.

(61 cm) both in front of the router and behind it.

Figure 27: Chassis Dimensions and Clearance Requirements

	Top down view
24 in. (61 cm) clearance		29 in.
for maintenance		(73.6 cm)

24 in. (61 cm) clearance

for maintenance

6 in. (15.2 cm) clearance for airflow

Front of chassis 19 in. 19 in.

17.5 in.

Rear of chassis

(48.3 cm) (48.3 cm)

Center rack-mount ears

(44.5 cm)

6 in. (15.2 cm) clearance for airflow

1169

Routing Node Environmental Specifications

Table 15 specifies the environmental specifications required for normal router operation. In addition, the site should be as dust-free as possible. Dust can clog air intake vents, reducing cooling system efficiency. Check the vents frequently, cleaning them as necessary. For more information, see “Maintaining Hardware Components” on page 127.

62 Routing Node Environmental Specifications