Juniper Networks MX240 manual Hardware Components, Router Chassis

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,

17.45in. (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