Juniper EX4300 Hardware Guide

CHAPTER 15
Replacing Cooling System Component
•
Installing a Fan Module in an EX4300 Switch on page 229
•
Removing a Fan Module from an EX4300 Switch on page 231
Installing a Fan Module in an EX4300 Switch
Each fan module is a hot-removable and hot-insertable field-replaceable unit (FRU)
installed in the rear panel of the switch: You can remove and replace it without powering
off the switch or disrupting switch functions.
CAUTION: Do not mix:
•
Fan modules with different airflow labels (AIR IN (AFI) and AIR OUT (AFO))
in the same chassis.
•
Power supplies with different airflow labels (AIR IN (AFI) and AIR OUT
(AFO)) in the same chassis.
•
Power supplies and fan modules with different airflow labels (AIR IN (AFI)
and AIR OUT (AFO)) in the same chassis.
•
AC and DC power supplies in the same chassis.
Before you install a fan module in the switch:
•
Ensure you understand how to prevent electrostatic discharge (ESD) damage. See
“Prevention of Electrostatic Discharge Damage” on page 313.
Ensure that you have the following parts and tools available to install a fan module in
the switch chassis:
•
ESD grounding strap
•
Phillips (+) screwdriver, number 2
229Copyright © 2017, Juniper Networks, Inc.

Juniper EX4300 Specifications

General

Model	EX4300
Virtual Chassis	Yes, up to 10 members
Layer 3 Routing	Yes
10GBASE SFP+ Ports	4
Jumbo Frames	9216 bytes
MAC Address Table Size	32, 000
Operating System	Junos OS
Uplink Ports	4 x 10GBASE SFP+
Power Supply	AC or DC options
Operating Temperature	0°C to 45°C (32°F to 113°F)
Input Voltage	100-240V AC
Operating Relative Humidity	5 to 90% RH, non-condensing
Management Options	CLI, Web UI, Junos Space
Redundancy	Yes, power supply and fans
Storage Temperature	-40°F to 158°F (-40°C to 70°C)
Ports	24 or 48