Host Subsystem In An Ex9200 Switch - Juniper EX9214 Hardware Manual

EX9214 Switch Hardware Guide
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Host Subsystem in an EX9200 Switch

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Component redundancy circuitry
Control Board/Routing Engine mastership mechanism
Gigabit Ethernet switch that is connected to the embedded CPU complex on all
components
Control field-programmable gate array (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
line cards
External clock interface—Allows BITS or GPS clock source input to the centralized
timing circuit, or allows centralized timing to be output to BITS or GPS
Circuits for chassis management and control
Power circuits for the Routing Engine and the Switch Fabric
SF module LEDs—Indicate system status. See
Switch" on page 35.
Ejector levers—Used for installing and removing the SF module
Captive screws—Secure the SF module in place
Installing an SF Module in an EX9200 Switch on page 200
Removing an SF Module from an EX9200 Switch on page 203
Taking the Host Subsystem Offline in an EX9200 Switch on page 194
Switching and routing functionality, system management, and system control functions
of an EX9200 switch are performed by host subsystem. A host subsystem consists of a
Routing Engine functioning together with a Switch Fabric.
You can install either one or two host subsystems in the front panel of an EX9204 or an
EX9208 switch. A base configuration EX9204 and EX9208 switch has one host
subsystem. A redundant configuration EX9204 and EX9208 switch has a second host
subsystem.
You can install either two or three host subsystems in the front panel of an EX9214 switch.
A base configuration EX9214 switch has two host subsystems. A redundant configuration
EX9214 switch has a third host subsystem.
"Switch Fabric Module LEDs in an EX9200
Copyright © 2015, Juniper Networks, Inc.