Juniper EX4200-48T, EX 4200 24P, EX 4200 24T, EX 4200 48P, EX4200-24F Specifications
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DATASHEET
EX4200 ETHERNET
SWITCHES WITH
VIRTUAL CHASSIS
TECHNOLOGY
Product Overview
High-performance businesses demand
high-performance networking solutions.
These solutions include a new class
of secure, scalable and always-on
enterprise switch that advances the
economics of networking by enabling
businesses to deploy innovative new
technologies that increase revenue
and improve productivity. The Juniper
Networks EX4200 line of Ethernet
switches with Virtual Chassis
technology combine the compact, pay-
as-you-grow economics and low power
and cooling requirements of stackable
switches with the performance,
availability, operational ease and port
densities of chassis-based platforms
to meet the demands of today’s high-
performance enterprises.
Product Description
The Juniper Networks® EX4200 line of Ethernet switches with Virtual Chassis technology
combine the high availability (HA) and carrier-class reliability of modular systems with the
economics and flexibility of stackable platforms, delivering a high-performance, scalable
solution for data center, campus and branch office environments.
Offering a full suite of Layer 2 and Layer 3 switching capabilities as part of the base
software, the EX4200 satisfies a variety of high-performance applications, including
branch, campus and data center access deployments as well as Gigabit Ethernet (GbE)
aggregation deployments. A single 24-port or 48-port switch can be deployed initially; as
requirements grow, Juniper Networks Virtual Chassis technology allows up to 10 EX4200
switches to be interconnected over a 128 gigabit-per-second (Gbps) backplane and
managed as a single device, delivering a scalable, pay-as-you-grow solution for expanding
network environments. Flexible Gigabit Ethernet (GbE) and 10-Gigabit Ethernet (10 GbE)
uplink options enable high-speed connectivity to aggregation- or core-layer switches
which connect multiple floors or buildings.
All EX4200 switches include HA features such as redundant, hot-swappable internal
power supplies and field-replaceable, multi-blower fan trays to ensure maximum
uptime. In addition, the base EX4200 switch models offer Class 3 Power over Ethernet
(PoE), delivering 15.4 watts on the first eight ports to support networked devices such
as telephones, video cameras and wireless LAN (WLAN) access points for low-density
converged networks. Full PoE options delivering 15.4 watts on all 24 or 48 ports are also
available, making them ideal for high-density IP telephony deployments.
Juniper Networks Virtual Chassis Technology: Chassis-like Switch
Features in a Stackable Form Factor
• Redundant, internal hot-swappable power supplies
• Hot-swappable fan tray with redundant blowers
• Consistent modular Junos® operating system control plane feature implementation
• Dual Route Engines with Graceful Routing Engine Switchover (GRES)
• Single management interface
• Easy, centralized software upgrades
• Scales from 24 to 480 ports with up to 20 10 GbE uplinks
• Limited lifetime switch hardware warranty
1
EX4200
EX4200
Single
Virtual
Chassis
System
West Closet
Floor N
Figure 1: Using Virtual Chassis technology, up to 10 EX4200 switches can be interconnected to create a single
logical device spanning multiple wiring closets, floors or even buildings.
Each EX4200 switch includes an integrated application-specific
integrated circuit (ASIC)-based Packet Forwarding Engine, the
EX-PFE, while an integrated Routing Engine (RE) delivers all
control plane functionality. Based on field-proven Juniper
Networks technology, the Route Engine brings the same level
of carrier-class performance and reliability to the EX4200 line
of Ethernet switches that Juniper Networks routers bring to the
world’s largest service provider networks.
The EX4200 also leverages the same modular Juniper Networks
Junos OS as Juniper Networks router products, ensuring a
consistent implementation and operation of each control plane
feature across an entire Juniper Networks infrastructure.
Architecture and Key Components
The EX4200 switches are single rack-unit devices that deliver a
compact solution for crowded wiring closets and access switch
locations where space and power are at a premium. Each EX4200
supports optional front-panel uplink modules oering either four
GbE ports or two 10 GbE ports for high-speed backbone or link-
aggregation connections between wiring closets and upstream
aggregation switches. Uplink modules can be installed without
powering down the switch, enabling users to add high-speed
connectivity at any time or migrate from one uplink type to the other
to deliver the ultimate in flexible, high-performance interconnectivity.
East Closet
The EX4200 also features a front-panel LCD display that offers a
flexible interface for performing device bring-up and configuration
rollbacks, reporting switch alarm and LED status, or restoring
the switch to its default settings. The LCD also displays a Virtual
Chassis member switch’s chassis “slot number” and Route Engine
status for rapid identification and problem resolution.
Dual rear-panel Virtual Chassis ports enable EX4200 switches to
be interconnected over the 128 Gbps virtual backplane. Switches
deployed in close proximity, such as wiring closets or top-of-
rack data center applications, can be securely connected using a
Virtual Chassis cable and cable lock supplied by Juniper Networks.
In addition, a dedicated rear-panel RJ-45 port is available for out-
of-band management, while a rear-panel USB port can be used to
easily upload Junos OS and configuration files.
Virtual Chassis Technology
Up to 10 EX4200 switches can be interconnected using Virtual
Chassis technology to create a single logical device supporting up
to 480 10/ 100/1000BASE-T ports or 240 100/1000BASE-X ports,
plus an additional 40 GbE or 20 10 GbE uplink ports. Different
models can be mixed in a Virtual Chassis configuration to provide
a variety of port and density options.
In a Virtual Chassis configuration, all switches are monitored and
managed as a single device, enabling enterprises to separate
physical topology from logical groupings of endpoints and allowing
more efficient resource utilization. Highly resilient topologies can
also be created using the GbE or 10 GbE uplink ports to extend
the Virtual Chassis configuration across long distances spanning
multiple wiring closets, floors or even buildings.
2
Features and Benefits
Chassis-Class Availability
The EX4200 line of Ethernet switches deliver the same HA
functionality and support many of the same failover capabilities
as other Juniper chassis-based systems.
Each EX4200 switch is capable of functioning as a Route Engine.
When two or more EX4200 switches are interconnected, they
share a single control plane among all Virtual Chassis member
switches. When two EX4200 switches are interconnected, Junos
OS automatically initiates an election process to assign a master
(active) and backup (hot-standby) Route Engine. An integrated
Layer 2 and Layer 3 Graceful Route Engine Switchover (GRES)
feature maintains uninterrupted access to applications, services
and IP communications in the unlikely event of a primary RE failure.
When more than two switches are interconnected in a Virtual
Chassis configuration, the remaining switch elements act as line
cards and are available to assume the backup RE position should the
designated master fail. Master, backup and line card priority status
can be assigned by the network operations team to dictate the order
of ascension; this N+1 RE redundancy, coupled with the GRES and, in
the future, the nonstop routing (NSR) and nonstop bridging (NSB)
capabilities of the Junos OS, assures a smooth transfer of control
plane functions following unexpected failures.
The EX4200 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 utilizing 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.
Individually, the EX4200 offers a number of HA features that are
typically associated with modular chassis-based switches. When
combined with the field-proven Junos OS and L2/L3 failover
capabilities, these features provide the EX4200 with true carrier-
class reliability.
Master RE
Backup RE
EX4200
Figure 2: Support for Graceful Route Engine Switchover (GRES)
ensures a smooth and seamless transfer of control plane functions
following a master Route Engine failure.
• Redundant power supplies: The EX4200 line of Ethernet
switches support internal redundant, load-sharing, hot-
swappable and field-replaceable AC and DC power supplies to
maintain uninterrupted operations. Thanks to their compact
footprint, the EX4200 requires significantly less power than
chassis-based switches delivering equivalent port densities.
• Hot-swappable fan tray with multiple blowers: The EX4200
includes a hot-swappable, field-replaceable fan tray with three
blowers, providing sufficient cooling even if one of the blowers
were to fail.
• Redundant Trunk Group (RTG): To avoid the complexities of
the Spanning Tree Protocol (STP) without sacrificing network
resiliency, the EX4200 employs redundant trunk groups to
provide the necessary port redundancy and simplify switch
configuration.
• Cross-member link aggregation: Cross-member link
aggregation allows redundant link aggregation connections
between devices in a single Virtual Chassis configuration,
providing an additional level of reliability and availability.
• Carrier-class hardware: The EX4200 leverages a purpose-built
packet forwarding engine ASIC, the EX-PFE, which integrates
much of the same intellectual property used in Juniper
Networks carrier routers. As a result, the EX4200 delivers the
same predictable, scalable functionality found in the world’s
largest networks.
Graceful Route
Engine Switchover
(GRES) for hitless
failovers
3
Policy Manager
IC Series UAC Appliances
AAA
Steel-Belted Radius
EX4200
CORPORATE
NETWORK
• Access granted
UAC Agent
Carrier-Class Operating System
The EX4200 runs on Junos OS, the same operating system
software used by Juniper Networks routers to power the world’s
largest and most complex networks.
By utilizing a common operating system, Juniper delivers a
consistent implementation and operation of control-plane
features across all products. To maintain that consistency, Junos
OS adheres to a highly disciplined development process that
utilizes a single source code, follows a single quarterly release
train, and employs a highly available modular architecture that
prevents isolated failures from bringing an entire system down.
These attributes are fundamental to the core value of the
software, enabling all products powered by Junos OS to be
updated simultaneously with the same software release. All
features are fully regression-tested, making each new release a
true superset of the previous version; customers can deploy the
software with complete confidence that all existing capabilities
will be maintained and operate in the same way.
• VLAN assigned
• QoS policies applied
Figure 3: The EX4200 works with the Juniper Networks UAC to enforce access control
down to the individual port level.
Firewall/VPN
Firewall Enforcer
Protected Servers
To ease deployment, the EX4200 supports the industry-
standard Link Layer Discovery Protocol (LLDP) and LLDP-Media
Endpoint Discovery (LLDP-MED), which enable the switches to
automatically discover Ethernet-enabled devices, determine their
power requirements and assign virtual LAN (VLAN) parameters.
In addition, the EX4200 supports rich quality of service (QoS)
functionality for prioritizing data, voice and video traffic. The
switches support eight QoS queues on every port, enabling them to
maintain multi-level, end-to-end traffic prioritizations. The EX4200
also supports a wide range of policy options, including priority and
shaped deficit weighted round-robin (SDWRR) queuing.
Security
The EX4200 line of Ethernet switches fully integrate with
the Juniper Networks Unified Access Control (UAC), which
consolidates all aspects of a user ’s identity, device and location,
enabling administrators to enforce access control and security
down to the individual port or user levels.
Converged Networks
The EX4200 line of Ethernet switches provide the highest levels
of availability for the most demanding converged data, voice
and video environments, delivering the most reliable platform for
unifying enterprise communications.
By providing Class 3 PoE with 15.4 watts on some or all ports to
power voice over IP (VoIP) telephones, closed-circuit security
cameras, wireless access points, and other IP-enabled devices,
the EX4200 delivers a future-proofed solution for converging
disparate networks onto a single IP infrastructure.
4
J Series
TX Matrix
9.69.59.4
Frequent Releases
Module
One OS One Release One Architecture
Figure 4: Junos OS utilizes a single source code, adheres to a
consistent and predictable release train, and employs a single
modular architecture.
X
— API —
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