EX4300 switches provide connectivity for high-density Gigabit Ethernet data center top-of-rack, enterprise,
and campus aggregation/core deployments. EX4300 switches can be used in large branch offices, campus
wiring closets, and data centers. In data centers, these switches can be positioned as the top devices in a
rack to provide connectivity for all devices in the rack and provide options for optimized airflow (hot
aisle/cold aisle).
To provide carrier-class reliability, EX4300 switches include:
•
Dual redundant, load-sharing power supplies that are hot-insertable and hot-removable field-replaceable
units (FRUs).
•
Two fan modules that are field-replaceable units.
•
Redundant Routing Engines in a Virtual Chassis or QFX5100 Virtual Chassis Fabric (VCF) configuration.
This redundancy enables graceful Routing Engine switchover (GRES).
•
Junos OS with its modular design that enables failed system processes to gracefully restart.
The following EX4300 switches are available:
24-Port EX4300 Switches
The 24-port EX4300 switches—EX4300-24T and EX4300-24P—provide 24 built-in 10/100/1000BASE-T
Ethernet network ports and four built-in 40-Gigabit Ethernet quad small form-factor pluggable plus (QSFP+)
ports that can house 40-Gigabit QSFP+ transceivers. All network ports in the EX4300-24P switch are
equipped for Power over Ethernet (PoE+), whereas EX4300-24T has no PoE+ ports. 24-port EX4300
switches support AC power supply and fan module with front-to-back airflow direction and have a slot
for installing an optional 4-port 10-Gigabit Ethernet SFP+ uplink module (model number: EX-UM-4X4SFP),
which has four 10-Gigabit Ethernet small form-factor pluggable plus (SFP+) ports that can house four
10-gigabit small form-factor pluggable (SFP+) transceivers, four 1-gigabit small form-factor pluggable (SFP)
transceivers, or a combination of SFP+ and SFP transceivers in the four ports on the uplink module.
Figure 30 on page 60 shows the front panel of a 24-port EX4300 switch.
Figure 30: Front Panel of a 24-Port EX4300 Switch
Figure 31 on page 61 shows the rear panel of a 24-port EX4300 switch with power supplies and fan
modules installed.
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