Juniper SRX5800 Hardware Manual page 72

Figure 26: Switch Control Board SRX5K-SCB
Each SCB consists of the following components:
Chassis management Ethernet switch.
I2C bus logic, used for low-level communication with each component.
Component redundancy circuitry.
Gigabit Ethernet switch that is connected to the embedded CPU complex on all components.
Switch fabric—Provides the switching functions for the IOCs.
Control FPGA—Provides the Peripheral Component Interconnect (PCI) interface to the Routing Engine.
1000Base-T Ethernet controller—Provides a 1-Gbps Ethernet link between the Routing Engines.
Ethernet switch—Provides 1-Gbps link speeds between the Routing Engine and the IOCs.
Circuits for chassis management and control.
Power circuits for the Routing Engine and SCB.
Description
Software release
Cables and connectors
Controls
SCB with slot for Routing Engine
Maximum throughput: 75 Gbps per slot
Junos OS Release 9.2 and later
Slot for Routing Engine
None
73