Juniper EX3300 Hardware Guide

Because tunnel services interfaces are considered logical interfaces, you cannot configure
the MTU setting for the physical interface. This means you cannot include the mtu
statement at the [edit interfaces interface-name] hierarchy level for the following interface
types: generic routing encapsulation (gr-), IP-IP (ip-), loopback (lo-), link services (ls-),
multilink services (ml-), and multicast (pe-, pd-). You can, however, configure the protocol
MTU on tunnel interfaces, as described in “Setting the Protocol MTU” on page 65.
Encapsulation Overhead by Encapsulation Type
Table 15: Encapsulation Overhead by Encapsulation Type
Encapsulation Overhead (Bytes)Interface Encapsulation
21802.1Q/Ethernet 802.3
26802.1Q/Ethernet Subnetwork Access Protocol (SNAP)
18802.1Q/Ethernet version 2
4ATM Cell Relay
12ATM permanent virtual connection (PVC)
4Cisco HDLC
17Ethernet 802.3
4Ethernet circuit cross-connect (CCC) and virtual private
LAN service (VPLS)
32Ethernet over ATM
22Ethernet SNAP
18Ethernet translational cross-connect (TCC)
14Ethernet version 2
4Extended virtual local area network (VLAN) CCC and
VPLS
22Extended VLAN TCC
4Frame Relay
4PPP
4VLAN CCC
4VLAN VPLS
22VLAN TCC
Copyright © 2015, Juniper Networks, Inc.56
Network Interfaces for EX4300 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