Figure 3: Rear View of an EX9208 Switch with DC Power Supplies
Host Subsystem
Switching and routing functionality, system management, and system control functions
of an EX9208 switch are performed by the host subsystem. The host subsystem consists
of a Routing Engine functioning together with a Switch Fabric.
You can install either one or two host subsystems in the slots labeled 0 and 1 in the front
panel of the chassis. A base-configuration EX9208 switch has one host subsystem. A
redundant-configuration EX9208 switch has a second host subsystem. For more
information, see “EX9208 Switch Configurations” on page 7.
Line Cards
The EX9208 switch has six horizontal line card slots and supports line rate for each line
card. The line cards in EX9208 switches combine a Packet Forwarding Engine and Ethernet
interfaces in a single assembly. Line cards are field-replaceable units (FRUs) that you
can install in the line card slots—labeled 0 through 5—on the front of the switch chassis.
All line cards are hot-removable and hot-insertable. Table 3 on page 5 lists the line
cards available for EX9208 switches.
Table 3: Line Cards Available for EX9208 Switches
Additional InformationDescriptionModel
“EX9200-2C-8XS Line Card” on page 53A line card with two 100-Gigabit
Ethernet ports and eight 10-Gigabit
Ethernet ports
EX9200-2C-8XS
“EX9200-4QS Line Card” on page 55A line card with four 40-Gigabit Ethernet
ports
EX9200-4QS
5Copyright © 2017, Juniper Networks, Inc.
Chapter 1: Switch Overview
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