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CHAPTER 2
Installing the ERX System
2-6
Figure 2-5 ERX-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-700 series
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.
OC3 I/O
connectors
CT3 I/O
connectors
Fast Ethernet
connector
Console
connector
Power
connectors
SRP I/O
connectors
Power input
module