24-Port Ex4300 Switches - Juniper QFX5110 Series Hardware Documentation

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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