Juniper QFX5120-48Y-AFI2 Switch - 48x25GbE SFP28, 8x100GbE QSFP28, 1U Rackmount

The Juniper QFX5120-48Y-AFI2 is a high-performance, fixed-configuration switch designed for data center and enterprise campus networks. It offers 48 ports of 25GbE SFP28 and 8 ports of 100GbE QSFP28 uplinks, delivering a switching capacity of 3.2 Tbps and a forwarding rate of 2.4 Bpps. With ultra-low latency under 1 microsecond, this switch is ideal for latency-sensitive applications. It runs on Junos OS and supports Virtual Chassis technology for stacking up to 10 units, providing scalability and simplified management.

Advantages

The QFX5120-48Y-AFI2 provides high-density 25GbE connectivity with 100GbE uplinks, ensuring future-proof performance for growing network demands. Its front-to-back airflow (AFI) optimizes cooling in data center environments. Dual redundant, hot-swappable AC power supplies enhance reliability, while the Intel Xeon D-1500 processor and 16 GB RAM ensure robust processing capabilities. The switch supports full Layer 3 routing protocols including OSPF, BGP, ISIS, and VRRP, making it suitable for complex network architectures.

Suitable for

• Data center top-of-rack (ToR) and leaf-spine deployments
• Enterprise campus aggregation and access layers
• High-performance computing (HPC) and storage networks
• Virtualized environments requiring low latency and high throughput

Key specifications

• Port Configuration: 48 x 25GbE SFP28 + 8 x 100GbE QSFP28
• Switching Capacity: 3.2 Tbps
• Forwarding Rate: 2.4 Bpps
• Latency: < 1 µs (port-to-port)
• MAC Address Table: 288,000 entries
• VLANs Supported: 4096
• Routing Protocols: OSPF, BGP, ISIS, RIP, PIM, VRRP (Full L3)
• Power Supply: Dual redundant, hot-swappable AC
• Form Factor: 1U Rack-mountable
• Management Ports: 1x GbE, 1x Console (RJ-45), 1x USB Type-A
• Jumbo Frame Support: Up to 9192 bytes
• Operating System: Junos OS
• Stacking Technology: Virtual Chassis (up to 10 units)
• Airflow: Front-to-Back (AFI)
• Processor: Intel Xeon D-1500 series
• Memory: 16 GB RAM
• Storage: 64 GB SSD
• Max Power Consumption: 450 W
• MTBF: > 200,000 hours

Recommendations

For optimal performance, pair the QFX5120-48Y-AFI2 with Juniper SFP28 and QSFP28 transceivers. Use Junos OS features like Virtual Chassis for simplified management and redundancy. Ensure proper front-to-back airflow clearance in the rack.