Juniper EX4300 Series User Manual

EX4300-24P-S, EX4300-32F-S, EX4300-32F-DC, EX4300-48T-S, EX4300-48T-DC,
EX4300-48T-DC-AFI, and EX4300-48P-S models support DC power.
All the EX4300 switches that are powered by DC power supplies except EX4300-24T-S, EX4300-24P-S,
EX4300-32F-S, EX4300-48T-S, and EX4300-48P-S switches are shipped with one DC power supply
installed in the rear panel of the switches. EX4300-24T-S, EX4300-24P-S, EX4300-32F-S, EX4300-48T-
S, and EX4300-48P-S switches are not shipped with power supplies; you must order the power supplies
separately.
This topic describes the DC power supplies.
CAUTION: Do not mix:
• AC and DC power supplies in the same chassis
• Power supplies with dierent airow labels (AIR IN (AFI) and AIR OUT (AFO)) in the
same chassis.
• Fan modules with dierent airow labels (AIR IN (AFI) and AIR OUT (AFO)) in the
same chassis.
• Power supplies and fan modules with dierent airow labels (AIR IN (AFI) and AIR
OUT (AFO)) in the same chassis.
Characteriscs of a DC Power Supply
EX4300 switches support 550 W DC power supply (see Figure 44 on page 113).
Figure 44: DC Power Supply for an EX4300 Switch
113

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