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Chapter 2
Hardware Components
This chapter provides an overview of the router's hardware components:
■ Router Chassis on page 5
■ Midplane on page 8
■ Dense Port Concentrators (DPCs) on page 8
■ Host Subsystem on page 11
■ Cable Management System on page 17
■ Craft Interface on page 17
■ Power Supplies on page 21
■ Cooling System on page 24
Router Chassis
The router chassis is a rigid sheet metal structure that houses all the other router
components (see Figure 1 on page 6, Figure 2 on page 6, Figure 3 on page 7,
and Figure 4 on page 7). The chassis measures 8.71 in. (22.1 cm) high,
17.45 in. (44.3 cm) wide, and 24.5 in. (62.2 cm) deep (from the front-mounting
brackets to the rear of the chassis). The chassis installs in standard 800-mm deep
(or larger) enclosed cabinets, 19-in. equipment racks, or telco open-frame racks. See
Table 25 on page 161.
Router Chassis ■ 5