Chassis - Juniper M40 Hardware Manual

Chassis

Chassis
Figure 1: Front View of Chassis
8 M40 Internet Router Hardware Guide
The router chassis is a rigid sheet metal structure that houses all the other router hardware
components (see Figure 1 and Figure 2). The chassis is 19 in. (48 cm) wide and 23.5 in.
(60 cm) deep. The chassis height of 35 in. (89 cm) enables stacked installation of two M40
routers in a single floor-to-ceiling rack. The two front- or center-mounting ears (one on each
side) enable installation into either a front-mount or a center-mount rack. For more
information, see "Rack Requirements" on page 39.
The chassis includes two electrostatic discharge (ESD) points (banana plug receptacles), one
front and one rear, as shown in Figure 1 and Figure 2.
Before removing or installing components of a functioning
router, attach an ESD strap to one of the ESD points and
place the other end of the strap around your bare wrist.
Failure to use an ESD strap could result in damage to the
router.
The router must be connected to earth ground during
normal operation.
For further safety information, see "Regulatory
Compliance and Safety Information" on page 55.
Front rack-mounting ear
Cable managment
system
Card cage
Backplane
Slide guides for FPCs
ESD point
Craft interface
Air filter
Center rack-mounting ear