Figure 13: Midplane - Juniper SRX5800 Hardware Manual

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Copyright © 2015, Juniper Networks, Inc.
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.
The enhanced midplane supports Junos OS Release15.1X49-D10. It provides greater
per-slot fabric performance and signal integrity, along with error-free high speed data
transfer, and it reduces cross-talk. The midplane supports link speeds up to 10 Gbps and
is not field replaceable.

Figure 13: Midplane

SRX5800 Services Gateway Chassis on page 19
SRX5800 Services Gateway Card Cage and Slots on page 6
SRX5800 Services Gateway Interface Card Description on page 7
Switch Control Board SRX5K-SCB Overview on page 11
SRX5800 Services Gateway Power System Overview on page 87
Chapter 3: Chassis Description
23