Juniper EX4300 Series User Manual

• For EX4300-48MP and EX4300-48MP-S switches:
• QSFP+ ports
By default, the built-in QSFP+ ports are dedicated VCPs. In 48-port EX4300 switches except
EX4300-48MP and EX4300-48MP-S switches, you can use the QSFP+ ports as network ports or as
VCPs. You can also use the SFP+ uplink module ports to connect members of a Virtual Chassis or a
VCF across mulple wiring closets by conguring these ports as VCPs.
In EX4300-48MP and EX4300-48MP-S switches, you can use only the built-in QSFP+ ports as VCPs
to connect the switch in a Virtual Chassis. You cannot congure the ports on the uplink module in
EX4300-48MP and EX4300-48MP-S switches to Virtual Chassis ports (VCPs). You cannot congure
the built-in QSFP+ ports as network ports.
NOTE: EX4300-48MP switches can be a part of an EX4300 Virtual Chassis with other
EX4300 switches only. If you want to create a Virtual Chassis comprising EX4300-48MP
switch and other EX4300 switches, you must connect it to a 40-Gbps port on the other
EX4300 switches in the Virtual Chassis conguraon. In a Virtual Chassis conguraon
comprising EX4300-48MP switches, EX4300 switches can be congured only in the line card
role.
For more informaon about Virtual Chassis, see Understanding EX Series Virtual Chassis. For more
informaon about VCFs, see Virtual Chassis Fabric Overview.
Power Supplies
EX4300 switches except EX4300-48MP and EX4300-48MP-S switches support AC or DC power
supplies with dierent airow direcons. EX4300-48MP and EX4300-48MP-S switches support only
AC power supplies with front-to-back airow. Power supplies for the EX4300 switch are fully
redundant, load-sharing, and hot-removable and hot-insertable FRUs. All the EX4300 switch models
except EX4300-24T-S, EX4300-24P-S, EX4300-32F-S, EX4300-48T-S, EX4300-48P-S, and
EX4300-48MP-S switches are shipped with one power supply preinstalled in the rear panel of the
switches. EX4300-24T-S, EX4300-24P-S, EX4300-32F-S, EX4300-48T-S, EX4300-48P-S, and
EX4300-48MP-S switches are not shipped with preinstalled power supplies; you must order the power
supplies separately.
Each power supply has a label—AIR IN (AFI) or AIR OUT (AFO)—on the faceplate of the power supply
that indicates the direcon of airow. AIR IN (AFI) labels indicate back-to-front airow while AIR OUT
(AFO) labels indicate front-to-back airow.
Table 7 on page 23 lists the AC and DC power supplies used in EX4300 switches and the direcon of
airow in them.
22

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