Juniper EX9251 - 1U Fixed Core/Aggregation Switch, 8× 10 GbE SFP+ + 4× 40/100 GbE QSFP28, Integrated RE, AC/DC Redundant Power, Junos Fusion Enterprise

Juniper EX9251 is a compact 1U Ethernet switch designed for high-performance enterprise and data centre networks. Offering a balanced mix of 8 × 10GbE SFP+ ports and 4 × 40GbE QSFP+ / 100GbE QSFP28 ports, it delivers flexible connectivity options to support modern workloads. With dual hot-swappable power supplies, redundant fan trays, and Junos OS at its core, the EX9251 ensures reliability, scalability, and streamlined operations.

Its versatile design makes it ideal for aggregation, top-of-rack, and high-density interconnect applications, providing the right blend of performance and efficiency for organisations adopting multi-gigabit and cloud-ready infrastructures.

KEY FEATURES:

• Total Ports: 8 × 10GbE SFP+ ports and 4 × 40GbE QSFP+ / 100GbE QSFP28 ports
• Port Flexibility: Breakout options for QSFP ports to support multiple 10GbE or 25GbE links
• Switching Capacity: Up to 800 Gbps
• Forwarding Rate: Up to 900 Mpps
• CPU: 1.6 GHz, 8-core Intel Xeon processor
• System Memory: Up to 32 gigabytes of DRAM
• Onboard Storage: Solid-state drive (SSD) (up to 100 GB)
• Packet Buffer: 16 MB shared packet buffer
• MAC Address Table: up to 1 million MAC addresses
• VLAN Support: Up to 4,096 VLANs
• Jumbo frames: 9192 bytes maximum
• Latency: As low as 600 ns, optimised for low-latency workloads
• Resiliency: Dual hot-swappable AC or DC power supplies, redundant fan trays, and nonstop software upgrades
• Airflow Options: Available in both front-to-back (AFO) and back-to-front (AFI) configurations
• Form Factor: 1U rack-mountable chassis with efficient power and cooling design
• Advanced Features: EVPN-VXLAN, MACsec AES-256, Junos automation, ZTP, and streaming telemetry

TECHNICAL SPECIFICATION:

HARDWARE:

PERFORMANCE:

SECURITY:

MANAGEMENT:

PHYSICAL AND ENVIRONMENTAL:

ADVANCED FEATURES:

EVPN-VXLAN: 

The EX9521 integrates advanced EVPN-VXLAN capabilities to extend Layer 2 services across Layer 3 networks. This enables seamless workload mobility, efficient multi-tenancy, and network segmentation across geographically distributed data centres. It provides a scalable framework for building large Layer 2 overlays while simplifying operations with standards-based interoperability.

MACsec Security: 

Equipped with IEEE 802.1AE MACsec, the switch delivers AES-256 wire-speed encryption across all supported ports. This ensures secure communication for mission-critical applications, safeguarding sensitive data against interception or tampering. Combined with robust access control lists (ACLs), role-based access control (RBAC), and secure authentication (RADIUS/TACACS+), the EX9521 provides a comprehensive security foundation.

Automation & Orchestration: 

Designed for modern operational models, the EX9521 supports Zero-Touch Provisioning (ZTP) and integrates seamlessly with automation frameworks through open APIs. Intent-based networking features allow administrators to define business policies that are automatically translated into network configurations. Integration with orchestration platforms such as OpenStack and Kubernetes makes it well-suited for hybrid and multi-cloud environments.

Real-Time Telemetry & Analytics: 

The switch streams high-frequency telemetry data for detailed visibility into traffic flows, latency, and system health. This enables operators to detect anomalies, predict capacity requirements, and troubleshoot issues before they impact performance. By integrating telemetry with analytics platforms, IT teams can move from reactive to predictive operations.

High Availability & Resiliency: 

The hardware is designed with fully redundant and hot-swappable power supplies and fans, ensuring that failures do not impact uptime. Nonstop routing and hitless software upgrades minimise downtime during maintenance activities. In mission-critical environments such as financial services or healthcare, this resiliency is essential for uninterrupted operations.

Performance Optimisation: 

With an aggregate switching capacity of 7.2 Tbps and forwarding rates up to 2.16 Bpps, the EX9521 ensures line-rate forwarding even under heavy loads. Its ultra-low latency (as low as 450 ns) and large packet buffers provide consistent performance for latency-sensitive applications, including HPC clusters, financial trading systems, and AI/ML workloads.

Scalability & Port Flexibility: 

Supporting up to 12 × 100GbE or 36 × 40GbE ports in a compact 1U form factor, the EX9521 can also break out into 10GbE or 25GbE links, delivering flexible connectivity for evolving network topologies. This scalability allows operators to add bandwidth incrementally without disruptive forklift upgrades.

Junos OS Advantage: 

Running on Junos OS, the switch benefits from decades of operational reliability and security enhancements. Junos provides advanced programmability, automation hooks, and a unified feature set across routing, switching, and security platforms, reducing the operational burden and enabling consistent policy enforcement across the network.

Cloud-Ready Infrastructure: 

The EX9521 is engineered for data centres, cloud providers, and large enterprises transitioning to high-speed architectures. Its combination of EVPN-VXLAN, automation, telemetry, and high-density port options makes it a strategic platform for supporting hybrid-cloud, edge, and AI-driven applications.

ORDERING INFORMATION:

WARRANTY & SUPPORT:

Manufacturers are responsible for warranties, which are based on the purchase date and validity. We make sure the products we sell are delivered on time and in their original condition at Grabnpay. Whether it's physical damage or operational issues, our team will help you find a solution. We help you install, configure, and manage your devices. We'll help you file a warranty claim and guide you every step of the way.

All listed prices reflect standard market rates. Final commercial terms, including volume-based discounts, will be provided based on purchase volume, MOQ, and other applicable criteria. For more information about switches & other accessories, contact our technical support team.