SSR400 Line of Routers Datasheet

By combining the AI-native intelligence of Juniper^® WAN Assurance with the Session Smart Router, enterprises gain industry-leading automation and insight to ensure the best user, device, and application experiences in their branch and remote locations. The Juniper WAN Assurance cloud service simplifies operations, provides superior visibility into end user experiences, and reduces the mean time to repair for SD-WAN issues.

The Juniper Networks SSR400 line of routers provides the hardware foundation for this service-centric fabric. These appliances feature a service-centric control plane and service-aware data plane that offer robust IP routing, a feature-rich policy management engine, improved visibility, and proactive analytics. This architecture moves beyond the limitations of traditional, tunnel-based solutions by delivering a single, unified platform for powerful and secure connectivity.

The fixed configuration appliances in the SSR400 line are designed for a variety of branch sizes:

• The SSR400: Ideal for small branches and retail locations
• The SSR440: Designed to serve the needs of medium-sized branches

These appliances run the FIPS 140-3 Level 2 compliant Session Smart Router software, which provides secure and resilient WAN connectivity as a core component of the Juniper AI-native SD-WAN solution.

WAN Assurance is a cloud service that brings AI-native automation and service levels to Juniper SSR SD-WAN routers, complementing the Juniper AI-native SD-WAN solution. WAN Assurance transforms IT operations from reactive troubleshooting to proactive remediation, turning insights into actions and delivering operational simplicity with seamless integration into existing deployments.

• SSR Series SD-WAN routers, deployed as secure SD-WAN edge devices, deliver the rich streaming telemetry that provides the insights needed for WAN health metrics and anomaly detection. This data is leveraged within the Mist cloud and Marvis AI engine, driving simpler operations, reducing mean time to repair (MTTR), and providing greater visibility into end user experiences.
• Insights derived from SSR Series SD-WAN gateway telemetry data allow WAN Assurance to compute unique “User Minutes” that indicate whether users are having a good experience.
• Marvis^® AI Assistant for WAN allows you to ask direct questions like, “Why is my Zoom call bad?” and provides complete insights, correlation, and actions.
• Marvis Actions identify and summarize issues such as application latency conditions, congested WAN circuits, or negotiation mismatches.

For detailed features and benefits of Juniper Mist WAN Assurance, see the WAN Assurance datasheet.

SSR400 Routers deliver fully automated SD-WAN to both enterprises and service providers.

• Configuration templates and ZTP features simplify branch network connectivity for initial deployment and ongoing management.
• SSR400 line of SD-WAN routers offer best-in-class secure connectivity.
• The SSR400 line of SD-WAN routers efficiently utilize multiple links and load balance traffic across the enterprise WAN, blending traditional MPLS with other connectivity options such as broadband internet, leased lines, 5G/LTE, and more. Policy- and application-based forwarding capabilities enforce business rules created by the enterprise to steer application traffic toward a preferred path.

Juniper Networks is leading the convergence of AI and networking. Mist^™, Juniper’s AI-native networking platform, is purpose-built to run AI workloads and simplify IT operations, assuring exceptional and secure user and application experiences—from the edge to the data center to the cloud. Additional information can be found at www.juniper.net, X, LinkedIn, and Facebook.

1000811 - 001 - EN SEPTEMBER 2025