Juniper EX3300 Complete Hardware Guide

Table 33: Special Instructions to Follow Before Connecting Earth Ground to a Switch (continued)
Special InstructionsSwitch
NOTE: Some early variants of EX4200 switches for which the Juniper Networks model number on the label
next to the protective earthing terminal is from 750-021xxx through 750-030xxx require 10-24x.25 in. screws.
NOTE: The protective earthing terminal on an EX4200 switch mounted on four posts of a rack is accessible
through the slot on the left rear bracket only if the rack is 27.5 in. through 30.5 in. deep for a switch mounted
flush with the rack front and 29.5 in. through 32.5 in. deep for a switch mounted 2 in. recessed from the rack
front. See Figure 33 on page 103.
Figure 33: Connecting the Grounding Lug to a Switch Mounted on Four Posts
of a Rack
g004479
3—1— Grounding lugProtective earthing terminal
4—2— Rear mounting-bladeSide mounting-rail
NOTE: The brackets must be attached to the chassis before the grounding lug is attached. (The brackets
are shown pulled away from the chassis so that the protective earthing terminal is seen.)
EX4200
NOTE: The protective earthing terminal on an EX4300 switch mounted on four posts of a rack is accessible
through the slot on the left rear bracket only if the rack is 27.5 in. through 30.5 in. deep for a switch mounted
flush with the rack front and 29.5 in. through 32.5 in. deep for a switch mounted 2 in. recessed from the rack
front.
EX4300
NOTE: If you plan to mount your switch on four posts of a rack or cabinet, mount your switch in the rack
or cabinet before attaching the grounding lug to the switch. See Mounting an EX4500 Switch on Four Posts
in a Rack or Cabinet.
NOTE: The protective earthing terminal on an EX4500 switch mounted on four posts of a rack is accessible
through the slot on the left rear bracket only if the rack is 27.5 in. through 30.5 in. deep for a switch mounted
flush with the rack front and 29.5 in. through 32.5 in. deep for a switch mounted 2 in. recessed from the rack
front.
EX4500
NOTE: The protective earthing terminal on an EX4550 switch mounted on four posts of a rack is accessible
through the slot on the left rear bracket only if the rack is 27.5 in. through 30.5 in. deep for a switch mounted
flush with the rack front and 29.5 in. through 32.5 in. deep for a switch mounted 2 in. recessed from the rack
front.
EX4550
NOTE: Only one of the two protective earthing terminals needs to be permanently connected to earth
ground.
EX8216
103Copyright © 2015, Juniper Networks, Inc.
Chapter 11: Connecting the Switch

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