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

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

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M120 Midplane Description

Copyright © 2018, Juniper Networks, Inc.
For chassis serial number information , see
Serial Numbers" on page 297.
M120 Router Physical Specifications on page 82
General Safety Warnings for Juniper Networks Devices on page 314
General Safety Guidelines for Juniper Networks Devices on page 313
M120 Chassis Lifting Guidelines on page 321
The midplane is located in the center of the chassis and forms the rear of the FPC card
cage (see Figure 4 on page
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.
Chapter 3: Chassis Components and Descriptions
"Displaying M120 Router Components and
10). The FPCs install into the midplane from the front of the
9