M120 Midplane Description; Figure 3: Rear View Of A Fully Configured Dc-Powered M120 Router Chassis - Juniper Networks Hardware Manual

M120 Multiservice Edge Router Hardware Guide

Figure 3: Rear View of a Fully Configured DC-Powered M120 Router Chassis

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M120 Midplane Description

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All manuals and user guides at all-guides.com
For chassis serial number information , see "Displaying M120 Router Components and
Serial Numbers" on page 257.
M120 Router Physical Specifications on page 225
General Safety Warnings for M Series, MX Series, and T Series Routers on page 190
General Safety Guidelines for M Series, MX Series, and T Series Routers on page 189
M120 Chassis Lifting Guidelines on page 195
The midplane is located in the center of the chassis and forms the rear of the FPC card
cage (see Figure 4 on page 9). The FPCs install into the midplane from the front of the
chassis, and the FEBs, Routing Engines, power supplies, and CBs install into the midplane
from the rear of the chassis. The power supplies and cooling system components also
connect to the midplane.
The midplane performs the following major functions:
Data path—Data packets are transferred across the midplane between an FPC and
its associated FEB, and between the FEBs via the fabric ASICs on the CB.
Power distribution—The router power supplies are connected to the midplane, which
distributes power to all the router components.
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