Juniper EX4300 Series User Manual

To meet safety and electromagnec interference (EMI) requirements and to ensure
proper operaon, you must connect the chassis to earth ground before you connect it
to power. For installaons that require a separate grounding conductor to the chassis,
use the protecve earthing terminal on the switch chassis to connect to the earth
ground. For instrucons on connecng earth ground, see Connect Earth Ground to an
EX Series Switch .
• Install the power supply in the chassis. For instrucons on installing a DC power supply in an EX4300
switch, see "Installing a DC Power Supply in an EX4300 Switch" on page 301.
Ensure that you have the following parts and tools available:
• DC power source cables (14–16 AWG) with ring lug (Molex 190700067 or equivalent) (not provided)
• Phillips (+) screwdriver, number 2 (not provided)
• Mulmeter (not provided)
• A 14-10 AWG STR (2.5-6 mm²), minimum 90°C wire grounding cable, or one permied by the local
code, with a Panduit LCD10-10A-L or equivalent grounding lug aached (not provided)
• Two 10-32 x .25 in. screws with #10 split-lock washer (not provided)
• Two #10 at washers (not provided)
EX4300 switches can be congured with up to two DC power supplies. Aer you install at least one
power supply, you can connect power to the switch.
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.
To connect DC power to an EX4300 switch:
1. Aach the grounding strap to your bare wrist and to a site ESD point.
200

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