Midplane; Figure 3: Rear View Of A Fully Configured Dc-Powered Services Gateway; Figure 4: Midplane - Juniper SRX 5600 Hardware Manual

Figure 3: Rear View of a Fully Configured DC-Powered Services Gateway Chassis

Midplane

The midplane is located toward the rear of the chassis and forms the rear of the card
cage (see Figure 4 on page 8). IOCs, SPCs, and SCBs install into the midplane from
the front of the chassis, and the power supplies install into the midplane from the
rear of the chassis. The 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 the IOCs
and SPCs through the fabric ASICs on the SCBs.
Power distribution—The power supplies are connected to the midplane, which
distributes power to all the services gateway components.
Signal path—The midplane provides the signal path to the IOCs, SCBs, SPCs,
Routing Engine, and other system components for monitoring and control of
the system.
Chapter 2: Hardware Components
Midplane
7