EX9250 switches offer Evolved Enterprise Core capabilities that

allow the creation of larger networks supporting both Layer 2 and

Layer 3 application traffic. An Evolved Enterprise Core is enabled

by combining technologies such as EVPN and VXLAN. EVPN uses

control plane-based learning to ensure efficient network utilization

and natively supports active/active multihoming. VXLAN overlay

with EVPN allows L2 connectivity across the network while

providing active/active redundancy, aliasing, and mass media access

control (MAC) withdrawal. In an Evolved Enterprise Core, the

provider edge (PE) switch/router can, in most cases, also use a

VXLAN L3 gateway and route between VXLAN segments when

required. Since the core is a standard IP network, EVPN/VXLAN

allows the creation of an evolved core without having to replace

the rest of the core infrastructure. Enabling an evolved core with

EVPN provides flexibility by integrating with Junos Fusion and

other technologies in the distribution/access layer, paving the way

for a broader EVPN deployment over time.

The EX9250 line of switches is designed with simplicity in mind to

enable the Self-Driving Network™, with the goal of detecting and

correcting network faults and anomalies before services or

customer experiences can be impacted. The following capabilities,

integrated into the EX9250 switches, make this possible.

• Automation: In addition to integration with Puppet, Python,

OpenStack, and other automation applications, Juniper

Extension Toolkit (JET), available on the EX9250 switches,

covers all phases of network design, construction, provisioning,

and operations implemented with the APIs and programming

tools to deliver more programmatic interaction. JET provides a

notification API that allows users to subscribe to events and

designate a callback function, as well as a service API that

allows users to access the control plane and management

plane to run operational and configuration commands.

• Analytics: Junos Telemetry Interface (JTI), available on the

EX9250 switches, delivers advanced telemetry for collecting

the data needed to detect the state of network resources and

services. This includes capacity analysis, scenario simulation,

and detection, as well as prevention of network incidents. JTI

uses a push model to deliver data asynchronously, eliminating

the need for polling, while allowing a management station to

request data once and subscribe to streaming periodic

updates. As a result, JTI can effectively scale to support

thousands of devices, gathering telemetry data essential to the

Self-Driving Network.

Like all EX Series switches, as well as Juniper virtual and physical

SRX Series Services Gateways, the EX9250 switches are supported

by management applications such Junos Space® Network Director

and the Juniper Sky™ Enterprise cloud management offering.

Table 1. EX9250 Features at a Glance

Feature

EX9251

EX9253

Architecture

Single data, control, and management plane

Separate dedicated data, control, and management planes

Power

Holds up to two power supplies:

• -40 to -72 V DC (1+1 redundancy)

• Autosensing 120/240 V AC (1+1 redundancy)

• Maximum power draw: 312 W (DC), 300 W (AC)

Holds up to six power supplies:

• -40 to -72 V DC (3+1 redundancy)

• 100-120 V AC (3+1 redundancy)

• 200-240 V AC (3+1 redundancy)

• Maximum power draw: 2692 W (DC), 2692 W (AC)

Cooling

Internally redundant fan tray with front-to-back airflow

Internally redundant fan tray with front-to-back airflow

Weight (fully loaded)

23.15 lb (10.5 kg)

120 lb (54.43 kg)

Maximum throughput

Up to 800 Gbps

Up to 4.8 Tbps

Routing Engine (RE)

Integrated single RE

1.6 GHz, 8 core Intel Xeon processor

Up to 32 gigabytes DRAM

Solid-state drive (SSD) (up to 100 GB)

Console, auxiliary serial, and Ethernet management ports USB storage interface

Primary and backup REs (1+1 redundancy)

1.6 GHz, 8-core Intel Xeon processor

Up to 64 gigabytes DRAM

Dual front pluggable solid-state drive (SSD) (up to 100 GB each)

Console, auxiliary serial, and Ethernet management ports USB storage interface

Operating system

Juniper Networks Junos operating system

Juniper Networks Junos operating system

High availability

Hardware designed for continuous operation:

• Secure, modular architecture that isolates faults

• Separate control and forwarding planes that enhance scalability and resiliency

Hardware designed for continuous operation:

• Secure, modular architecture that isolates faults

• Separate control and forwarding planes that enhance scalability and resiliency

• Transparent failover and network recovery

• Graceful Routing Engine switchover (GRES)

• Nonstop active routing (NSR)

• Nonstop bridging (NSB)

EX9250 Ethernet Switch Datasheet

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