Juniper EX3300 Complete Hardware Guide

Table 13: Power Consumed by EX3300 Switches (continued)
Maximum System Power
Available for PoE
Maximum Power
Consumed by the Switch
Number of PoE-Enabled
PortsModel Number
405 W60 W (when no PoE power is
drawn)
24EX3300-24P
–50 W–EX3300-24T-DC
–76 W–EX3300-48T
–76 W–EX3300-48T-BF
740 W91 W (when no PoE power is
drawn)
48EX3300-48P
Related
Documentation
AC Power Cord Specifications for EX3300 Switches on page 72•
• Rear Panel of an EX3300 Switch on page 7
• Power Specifications for EX3300 Switches on page 71
• Connecting AC Power to an EX3300 Switch on page 105
• Connecting DC Power to an EX3300 Switch on page 107
• Connecting Earth Ground to an EX Series Switch on page 99
Cooling System and Airflow in an EX3300 Switch
The cooling system in an EX3300 switch consists of two fans: one along the rear of the
chassis and another along the left side of the chassis. The fans provide front-to-back or
back-to-front chassis cooling depending on the switch model.
This topic describes:
•
Airflow Direction in EX3300 Switch Models on page 22
•
Front-to-Back Airflow on page 23
•
Back-to-Front Airflow on page 23
Airflow Direction in EX3300 Switch Models
Table 14 on page 22 shows the different EX3300 switch models and their direction of
airflow.
Table 14: Airflow Direction in EX3300 Switch Models
Direction of AirflowModel
Front-to-backEX3300-24T
Front-to-backEX3300-24P
Copyright © 2015, Juniper Networks, Inc.22
Complete Hardware Guide for EX3300 Ethernet Switches

Juniper EX3300 Specifications

General

Ethernet LAN	Yes
Authentication method	RADIUS, TACACS+
Connectivity technology	Wired
Ethernet interface type	Gigabit Ethernet
Number of VLANs	4096
Networking standards	IEEE 802.1ab, IEEE 802.1D, IEEE 802.1Q, IEEE 802.1s, IEEE 802.1w, IEEE 802.1x, IEEE 802.3, IEEE 802.3ab, IEEE 802.3ad, IEEE 802.3x, IEEE 802.3z
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Copper ethernet cabling technology	1000BASE-T, 100BASE-TX, 10BASE-T
Console port	-
ExpressCard slot	No
Fiber ports quantity	4
USB 2.0 ports quantity	0
Basic switching RJ-45 Ethernet ports quantity	48
Throughput	130 Mpps
Number of queues	8
MAC address table	16000 entries
Maximum data transfer rate	176 Gbit/s
Supported data transfer rates	10, 100, 1000Mbps
Switch type	Managed
Switch layer	L2
Security algorithms	SSH-2
Power source	AC
AC input voltage	100 - 240 V
Power consumption (typical)	100 W
Form factor	1U
Product color	Black
Flash memory	1024 MB
Processor frequency	1000 MHz
Compatible operating systems	Junos
Operating altitude	0 - 3049 m
Non-operating altitude	0 - 4877 m
Storage temperature (T-T)	-40 - 70 °C
Operating temperature (T-T)	0 - 45 °C
Storage relative humidity (H-H)	0 - 95 %
Operating relative humidity (H-H)	10 - 85 %
Supported network protocols	IPv6

Weight and Dimensions

Depth	310 mm
Width	437 mm
Height	44 mm
Weight	4900 g