Redback Networks SmartEdge 100, Hardware Manual, Page: 16 / 98

System Components
1-2 SmartEdge 100 Router Hardware Guide
SmartEdge 100 Chassis
The SmartEdge 100 chassis is a rack-mountable unit that includes a single circuit board mounted within it.
At the rear of the chassis are five fans for forced-air cooling. A single fan failure does not impact the
operation of the system. Air intake is at the front of the chassis and air exhaust at the rear. For this reason,
these areas must not be blocked by other equipment.
Two versions of the SmartEdge 100 chassis support either AC or DC power sources. The DC version has
connectors for redundant power sources with a separate circuit breaker for each DC source. Because the
chassis is fully powered from a single DC source, installing dual DC sources is not required. The power
connectors for either the AC or DC power sources are located at the rear of the chassis. Figure 1-1 shows
the AC version of the SmartEdge 100 chassis.
The circuit board implements the functions of a controller card (referred to as the controller) and the
functions of a traffic card (referred to as an I/O carrier card). The connectors and LEDs for monitoring all
functions and components on the circuit board are on the chassis front panel.
The SmartEdge 100 chassis is designed for mounting in a standard 19- or 23-inch rack; it can also be placed
in a desktop environment. Cable management brackets are attached to the left and right sides at the front of
the chassis. All maintenance functions are performed at the front of the chassis. An electrostatic discharge
(ESD) jack is conveniently located on the chassis front panel.
Figure 1-1 SmartEdge 100 Chassis