Juniper EX4300 Series User Manual

48-Port EX4300 Switches
The 48-port EX4300 switches EX4300-48T and EX4300-48P provide 48 built-in 10/100/1000BASE-T
Ethernet network ports, with or without PoE+ depending on the switch model, and four built-in quad
small form-factor pluggable plus (QSFP+) ports that can house 40-Gigabit QSFP+ transceivers. All
network ports in the EX4300-48P switch are equipped for Power over Ethernet (PoE+), whereas
EX4300-48T has no PoE+ ports. These switches support AC or DC power supply with dierent airow
direcons. Each switch provides a slot for installing an oponal 4-port 10-Gigabit Ethernet SFP+ uplink
module (model number: EX-UM-4X4SFP), which has four SFP+ ports that can house four SFP+
transceivers, four SFP transceivers, or a combinaon of SFP and SFP+ transceivers in the four ports on
the uplink module.
The 48-port EX4300 switches with mulgigabit ports—EX4300-48MP and EX4300-48MP-S—provide
24 built-in 10/100/1000BASE-T Ethernet network ports, 24 built-in
100/1000/2500/5000/10000BASE-T Ethernet network ports, and four built-in Virtual Chassis Ports
(VCPs) that house 40-Gbps quad small form-factor plus (QSFP+) transceivers. The 24 built-in
10/100/1000BASE-T Ethernet network ports support 10 Mbps, 100 Mbps, and 1 Gbps speeds. The 24
built-in 100/1000/2500/5000/10000BASE-T Ethernet network ports support 100 Mbps, 1 Gbps,
2.5 Gbps, 5 Gbps, and 10 Gbps speeds. All network ports are equipped for PoE+ and provide up to
95 was of power. The four VCPs can be used to connect the switches to other devices in a Virtual
Chassis conguraon.
These switches support AC power supply with front-to-back airow.
Each switch provides a slot for installing an oponal 2-port 40-Gigabit Ethernet QSFP+/100-Gigabit
Ethernet QSFP28 uplink module (model number: EX-UM-2QSFP-MR) or a 4-port 1-Gigabit
Ethernet/10-Gigabit Ethernet SFP+ uplink module (model number: EX-UM-4SFPP-MR). The 2-port 40-
Gigabit Ethernet QSFP+/100-Gigabit Ethernet QSFP28 uplink module can house two QSFP+
transceivers, two QSFP28 transceivers, or a combinaon of one QSFP+ transceiver and one QSFP28
transceiver. The 4-port 1-Gigabit Ethernet/10-Gigabit Ethernet SFP+ uplink module can house four SFP
transceivers, four SFP+ transceivers, or a combinaon of SFP and SFP+ transceivers in the four ports on
the uplink module.
NOTE: The switch supports the 2-port 40-Gigabit Ethernet QSFP+/100-Gigabit Ethernet
QSFP28 uplink module (model number: EX-UM-2QSFP-MR) from Junos OS Release 18.4R1
onwards. Starng in Junos OS Release 19.3R1, you can install two 100-Gigabit Ethernet QSFP28
transceivers in the uplink module. In Junos OS Release 18.4R1 through Junos OS Release
19.2R1, the uplink module supported only one 100-Gigabit Ethernet transceiver. If you congure
both the ports on the uplink module to operate at 100-Gbps speed, the four QSFP+ ports on the
switch are disabled.
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Juniper EX4300 Series Specifications

General

Product Series	EX4300 Series
Power Consumption	Varies by model and configuration
Virtual Chassis Technology	Up to 10 switches
Software	Junos OS
Ports	24-port and 48-port models
10GBASE SFP+ Ports	Up to 8 ports
40GBASE QSFP+ Ports	2
Uplink Ports	Up to 4 ports
Jumbo Frames	Up to 9216 bytes
Operating Temperature	0°C to 45°C
Relative Humidity	5% to 90% noncondensing
Input Voltage	100 to 240V AC
Power Supply	AC or DC
Power Supply Options	AC or DC
Stacking	Yes
Layer 2 Features	Includes VLAN, STP, RSTP, MSTP, LACP
Layer 3 Features	OSPF, BGP
Management	CLI, Web GUI, SNMP
Security Features	DHCP snooping
QoS	8 queues per port, DSCP
Storage Temperature	-40°C to 70°C