Juniper Session Smart Router

Powering Juniper’s SD-WAN (software-defined wide area network) solution, the Session Smart™ Router is designed to connect users with exceptional experiences. Built on an application-aware, Zero Trust secure network fabric, it meets the most stringent enterprise performance, security, and availability requirements.

The Session Smart Router overcomes the inherent inefficiencies of conventional solutions with a tunnel-free architecture that enables improved performance, fast deployments, and cost savings. For flexible deployments, the software solution can run on customer premises equipment (CPE), data center network servers, and in the cloud. It is managed centrally using either the AI-driven Juniper Mist™ Cloud or the Juniper Session Smart Conductor platform.

Key Features


  • Application-aware routing
  • Fail-safe service delivery
  • Orchestration and automation
  • Zero Trust security
  • Centralized management
  • Enhanced security IPS/IDS and URL filtering

Features + Benefits

Application-aware for optimized experiences

Application awareness supports load balancing and traffic steering based on session policies and network status, ensuring optimal performance for critical applications. The Session Smart Router is the only product in the industry with a network routing fabric expressly designed to connect users with exceptional experiences, not merely connect devices.

AI-Native visibility and insights

The session-based routing solution delivers richer and more granular insights than packet-based solutions. With Juniper Mist WAN Assurance, powered by Mist AI™, these insights provide unparalleled visibility into user experiences, anomalies, and the root cause of issues.

Centralized cloud management

Juniper’s Mist AI cloud simplifies deployment and management with Zero Touch Provisioning (ZTP), templating tools, full stack visibility, and AI-driven insights and automation.

Zero Trust security

The Session Smart Router is the only routing solution with inherent zero trust access control, directionality, and segmentation policy, all powered by secure vector routing. IDS/IPS and URL filtering add additional security.

Scale and speed

The Session Smart Routing fabric rapidly scales to thousands of sites while accelerating service deployment through centralized orchestration of global security policies. True ZTP and automated templating tools enable deployments in minutes rather than days.

Optimization and cost saving

A tunnel-free architecture enables anywhere from 30–50% reduction in bandwidth, reducing costs and improving application performance.

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CASE STUDY

Seagate to Leverage Juniper Networks' AI-driven Enterprise Solutions

Seagate Technology® has selected Juniper’s full stack AI-driven enterprise portfolio to support its evolving business needs. The Juniper solution, driven by Mist AI and the cloud, offers Seagate proactive automation and unique client-to-cloud insight, as well as optimized performance and cost savings in key areas of their IT infrastructure.

Seagate, a world leader in mass-data storage infrastructure solutions, has multiple sites in 18 countries that share a vast amount of data. As a way of decreasing network costs and optimizing the performance of key applications between these locations, Seagate is moving from a traditional MPLS network to Juniper’s AI-driven SD-WAN solution. Juniper’s unique tunnel-less SD-WAN architecture can help reduce Seagate’s telco and hosting costs, which is ideal for high bandwidth activities like data transfers.

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Related solutions

SD-WAN (software-defined wide area network)

AI-based insights and automation simplify deployments and reduce troubleshooting time, while a tunnel-free architecture eliminates the inefficiencies, scaling limitations, and cost constraints of legacy solutions.

Secure Access Service Edge (SASE)

Juniper’s Secure Access Service Edge (SASE) architecture protects your workforce both on and off the network, delivering security that seamlessly follows users wherever they are.

Managed SD-WAN

Juniper SD-WAN is an integral part of a unique and secure client-to-cloud networking approach designed to provide the best end user and operator experiences. It leverages AI and the Juniper Mist Cloud Architecture for proactive insights and automation that take the complexity out of network operations and support.

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Juniper Session Smart Router FAQs

What is the Session Smart Router?

The Juniper Session Smart Router is a software-based router that enables tunnel-free, application-aware, and Zero Trust secure networks. The Session Smart Router is agile and resilient and provides cost-effective and efficient WAN connectivity. Together, the Session Smart Router and Mist AI power Juniper’s AI-driven SD-WAN solution.

What are the benefits of Session Smart Routing?

Session Smart Routing (SSR) improves both end and IT user experiences by simplifying operations and boosting application performance. SSR scales to thousands of sites, protecting users and data with inherent, Zero Trust access policies. SSR's tunnel-free architecture enables robust security without sacrificing performance. 

What is a session aware network?

A session aware network is a type of network with the ability to understand and manage the full context of a session, including user and group information, as well as the type of application being used. Session awareness also encompasses other critical information to enhance application awareness. This information includes authentication, encryption, and management of the session’s state, informing the network administrator about the application’s status at any specific point in time.  

What are the benefits of a session aware network?

A session aware network offers many benefits, including: 

  • Enhanced user experiences: By understanding the specifics of each session, the network can prioritize and optimize traffic for better performance, leading to a smoother user experience.
  • Huge scale improvements: Sessions tying an application to a user are addressed individually for as long as the session is open. 
  • Inherent Zero Trust security: Session aware networks often employ a “deny-by-default” approach, only allowing traffic that has been explicitly permitted. This Zero Trust model enhances security by reducing the attack surface. 

What are the limitations of tunneling protocols like IPsec?

Tunneling protocols like IPsec add about 30% additional bandwidth per packet sent, which reduces available network capacity and slows application performance. (We refer to this wasted overhead as “badput.”)

Tunneled architectures limit scaling and are inflexible in terms of their topology requirements. They can be hub-and-spoke, but the hub will slow down real-time traffic. Attempting a point-to-point architecture is possible but becomes cumbersome and difficult to maintain. A session-based architecture is much more flexible and can optimize for both real-time and asynchronous traffic. 

What are the benefits of tunnel-free routing?

Unlike tunnel-based routing, tunnel-free routing does not add additional bandwidth to network traffic, enabling improved application performance and costs savings. Furthermore, tunnel-free architectures are flexible and highly scalable, enabling faster deployments at any scale.

Does the Session Smart Router encrypt traffic?

Yes, the Session Smart Router encrypts traffic. Additionally, it offers an adaptive encryption feature that avoids “double encrypting” already encrypted traffic. By some estimates, up to 95% of network traffic is already encrypted, and double encrypting traffic, which often occurs in tunneled environments, is costly and can hinder network performance.

What security features does the Session Smart Router have?

Juniper’s tunnel-free Session Smart Routing is inherently Zero Trust secure with deny-by-default access policies. Session Smart Routing has built-in firewall functionality, such as intrusion detection and prevention (IDP) and URL filtering. It is also FIPS 140-2 certified and PCI and HIPAA compliant.

What are the deployment options for the Session Smart Router?

The Session Smart Router is software-based and deployable on Juniper SSR Series Routers hardware, white-box customer premises equipment, data center network servers, and all major public clouds. See the Session Smart Router datasheet to learn more.

Who should use the Juniper Session Smart Router?

Small- and medium-sized businesses, enterprises, telecommunications providers, and managed service provides looking to modernize their network infrastructure and improve IT and end user experiences should all consider using the Juniper Session Smart Router.

What are the use cases for the Session Smart Router?

The Session Smart Router supports several use cases, including:

  • Improving network security and performance through a router refresh or SD-WAN deployment 
  • Creating a secure Software Defined Branch (SD-Branch)
  • Accelerating cloud migration initiatives 
  • Lowering operational costs, especially for traffic to and from the cloud
  • Fast-tracking and simplifying WAN deployments and management operations

Where can I get help with the Session Smart Router?

For help with the Session Smart Router, view our Session Smart Router documentation, take a training course, or join our SD-WAN community. We also offer deployment services. Read the SD-WAN Deployment Services datasheet for deployment information.

Gartner Magic Quadrant for SD-WAN Infrastructure, by Jonathan Forest, Naresh Singh, Andrew Lerner, Karen Brown, [Publish Date September 27, 2023].

Gartner is a registered trademark and service mark, and Magic Quadrant is a registered trademark of Gartner, Inc. and/or its affiliates in the U.S. and internationally and are used herein with permission. All rights reserved.

Gartner does not endorse any vendor, product or service depicted in its research publications, and does not advise technology users to select only those vendors with the highest ratings or other designation. Gartner research publications consist of the opinions of Gartner’s research organization and should not be construed as statements of fact. Gartner disclaims all warranties, expressed or implied, with respect to this research, including any warranties of merchantability or fitness for a particular purpose.