Spec Sheet

5
Data SheetEX4300 Ethernet Switch
Carrier-Class Operating System
The EX4300 runs on Junos OS, the same operating system
software used by other Juniper Networks switches, routers, and
security devices.
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.
Converged Networks
The EX4300 line of Ethernet switches provides the highest levels
of availability for the most demanding converged data, voice,
and video environments, delivering the most reliable platform for
unifying enterprise communications.
The EX4300 supports rich quality of service (QoS) functionality
for prioritizing data, voice, and video traffic. The switches
support 12 QoS queues on every port, enabling them to maintain
multilevel, end-to-end traffic prioritizations. The EX4300 also
supports a wide range of policy options, including priority and
weighted deficit round-robin (WDRR) queuing.
By providing 15.4 watts of Class 3 802.3af PoE on all ports to
power voice over IP (VoIP) telephones, closed-circuit security
cameras, wireless access points, and other IP-enabled devices, the
EX4300 delivers a future-proofed solution for converging disparate
networks onto a single IP infrastructure. The EX4300 switches also
support standards-based 802.3at PoE+, which delivers up to 30
watts per port for powering networked devices like multiple radio
IEEE 802.11n wireless access points and video phones that may
require more power than available with IEEE 802.3af.
Link Layer Discovery Protocol–Media Endpoint Discovery (LLDP-
MED)-based granular PoE/PoE+ management allows the
EX4300 to negotiate PoE/PoE+ usage down to a fraction of a
watt on powered devices, enabling more efficient PoE utilization
across the switch.
To ease deployment, the EX4300 supports the industry-
standard LLDP and LLDP-MED, which enable the switches to
automatically discover Ethernet-enabled devices, determine their
power requirements, and assign virtual LAN (VLAN) parameters.
The EX4300 supports the IEEE 802.3az standard for Energy
Efficient Ethernet (EEE) functionality, reducing power
consumption of copper physical layers (PHY) during periods of
low link utilization.
Security
The EX4300 line of Ethernet switches fully integrates with
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.
EX4300
Virtual Chassis
Closet 2.1
Floor 2
Building 1
Closet 1.1
Floor 1
Building 1
EX4300
Virtual Chassis
Closet 3.1
10GbE MACsec Connections
10GbE MACsec Connections
Floor 3
Building 1
EX4550 Virtual Chassis
or EX4550/EX4200 Mixed Virtual Chassis
Floor 1
Building 2
10GbE MACsec
Connections
Figure 7: MACsec deployment with EX4300 and EX4550 switches.