Spec Sheet

2
Data SheetEX3400 Ethernet Switch
Architecture and Key Components
Junos Fusion Enterprise Technology
Junos Fusion Enterprise technology provides automated
network configuration and simplifies scalability for medium
to large enterprise networks. Using Juniper Networks EX9200
programmable switches as aggregation devices and switches as
satellite nodes, Junos Fusion Enterprise technology can be deployed
across a building (or multiple buildings) to connect large numbers of
switches in a fabric that can be managed as a single device.
With Junos Fusion technology, enterprises can reduce network
complexity and operational costs by collapsing underlying network
elements into a single logical point of control from Junos OS-
based Juniper routing and switching platforms. It is designed for
customers who need to cost-eectively deploy numerous switch
ports throughout their enterprise campus network and manage
them all from a central device. The EX3400 switches can be easily
added to a Junos Fusion Enterprise architecture with a simple
soware upgrade, oering full investment protection.
In Junos Fusion Enterprise deployments, satellite devices are not
required to be individually connected to aggregation devices.
Up to 10 satellite devices can be interconnected via standard
10GbE/40GbE interfaces to form a “cluster,” which in turn can
be connected to the aggregation device(s) over a pair of fiber
uplinks. Satellite devices or clusters can also be dual-homed or
single- homed to the aggregation devices.
In Junos Fusion Enterprise deployments, satellite devices forward all
trac to the aggregation device, enabling network administrators
to monitor and manage the entire enterprise campus building from
a single device. Features such as PoE/PoE+, LLDP-MED, and 802.1x
are also supported in Junos Fusion Enterprise architectures to help
meet enterprise campus requirements.
Figure 1: EX3400 Junos Fusion Enterprise deployment
Virtual Chassis Technology
The EX3400 supports Juniper Networks Virtual Chassis technology,
allowing up to 10 switches to be interconnected over uplink ports
and managed as a single logical device, delivering a scalable, pay-
as-you-grow solution for expanding network environments.
When deployed in a Virtual Chassis configuration, the EX3400
switches elect a primary and backup switch based on a
set of criteria or preconfigured policies. The master switch
automatically creates and updates the switching and optional
routing tables on all switches in the Virtual Chassis configuration.
Virtual Chassis technology allows switches to be added or
removed without service disruption. An EX3400 Virtual Chassis
configuration operates as a highly resilient unified system,
providing simplified management using a single IP address,
single telnet session, single command-line interface (CLI),
automatic version checking, and automatic configuration. The
EX3400 switches are also capable of local switching, so that
packets coming into a port destined for another port on the same
switch do not have to traverse the Virtual Chassis, increasing the
forwarding capacity of the switch.
The EX3400 implements the same slot/module/port numbering
schema as other Juniper Networks chassis-based products
when numbering Virtual Chassis ports, providing true chassis-like
operations. By using a consistent operating system and a single
configuration file, all switches in a Virtual Chassis configuration
are treated as a single device, simplifying overall system
maintenance and management.
The two QSFP+ ports on the EX3400 switch can be configured
as Virtual Chassis ports or as uplinks to aggregation devices.
Figure 2: EX3400 Virtual Chassis deployments
Simplified Management and Operations
Junos Fusion Enterprise technology dramatically simplifies
EX3400 management by enabling a large number of the
switches to be managed from a single interface when deployed
as satellite devices. With features such as plug-and-play
deployment and rolling software upgrades, Junos Fusion
Enterprise eliminates the need to individually manage every
access switch in the enterprise environment, leading to lower
operational costs and overall lower TCO.
Virtual Chassis technology simplifies network management for
smaller deployments. Up to 10 interconnected EX3400 switches
EX9200 Aggregation Devices
EX3400 Satellite Devices
Closet 1
10GbE uplinks
10GbE uplinks
Closet 2
EX3400
40GbE Virtual Chassis
Aggregation
EX3400
40GbE Virtual Chassis