Juniper EX3300 Hardware Guide

To configure a primary link and a backup link:
1. Configure the primary logical interface.
[edit interfaces interface-name]
user@host# set (fastether-options | gigether-options) 802.3ad aex primary
2. Configure the backup logical interface.
[edit interfaces interface-name]
user@host# set (fastether-options | gigether-options) 802.3ad aex backup
Reverting Traffic to a Primary Link When Traffic is Passing Through a Backup Link
On aggregated Ethernet interfaces, you designate a primary and backup link to support
link protection. Egress traffic passes only through the designated primary link. This includes
transit traffic and locally generated traffic on the router or switch. When the primary link
fails, traffic is routed through the backup link. Because some traffic loss is unavoidable,
egress traffic is not automatically routed back to the primary link when the primary link
is reestablished. Instead, you manually control when traffic should be diverted back to
the primary link from the designated backup link.
To manually control when traffic should be diverted back to the primary link from the
designated backup link, enter the following operational command:
user@host> request interface revert aex
Disabling Link Protection for Aggregated Ethernet Interfaces
To disable link protection, issue the delete interface revert aex configuration command.
user@host# delete interfaces aex aggregated-ether-options link-protection
Configuring Aggregated Ethernet Link Speed
On aggregated Ethernet interfaces, you can set the required link speed for all interfaces
included in the bundle. Generally, all interfaces that make up a bundle must have the
same speed. If you include in the aggregated Ethernet interface an individual link that
has a speed different from the speed that you specify in the link-speed parameter, an
error message is logged. However, starting with Junos OS Release 13.2, aggregated
Ethernet supports the following mixed rates and mixed modes on T640, T1600, T4000,
and TX Matrix Plus routers:
•
Member links of different modes (WAN and LAN) for 10-Gigabit Ethernet links.
•
Member links of different rates: 10-Gigabit Ethernet, 40-Gigabit Ethernet, 50-Gigabit
Ethernet, 100-Gigabit Ethernet, and OC192 (10-Gigabit Ethernet WAN mode)
Copyright © 2015, Juniper Networks, Inc.90
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