Juniper Networks ERX-1410, ERX-1440 manual Rack-Mounted Installation, 5ERX-700 series rear view

2-6

CHAPTER 2

Installing the ERX System

OC3 I/O
connectors
CT3 I/O
connectors
Power
connectors
Console
connector
Power input	Fast Ethernet	SRP I/O
module	connector	connectors

Figure 2-5ERX-700 series rear view

Rack-Mounted Installation

We recommend that you use a standard EIA distribution rack. Refer to Rack Requirements in Appendix D, Preparing Your Site, for detailed rack information. Before installing the systems in the rack, consider the following guidelines:

•You can install up to three ERX-1400 series systems in a single 84-inch rack.

Installing multiple systems in a single rack allows you to maximize your available space. An ERX-1400 series system has a plenum that allows air to circulate between systems.

•You can install an ERX-1400 series system and an ERX-700series system together in the same rack.

If you install an ERX-700 series system above an ERX-1400 series system in the same rack, you must install a plenum between the ERX-700 series system and the ERX-1400 series system so that the air can circulate between the systems. See Figure 2-6. This plenum is available from Juniper Networks.

If you install an ERX-1400 series system above an ERX-700 series system, there is no need to install a plenum between the units because the ERX-1400 series system has one at its base.