Product Specifications

Product Overview

The Juniper Networks® QFX5120-48Y-AFO2 is a high-performance, low-latency Layer 2 and Layer 3 Ethernet switch designed for data center top-of-rack and aggregation deployments. It offers advanced EVPN-VXLAN capabilities, making it ideal for enterprise multicloud environments. With native 25GbE downlinks and 100GbE uplinks, the QFX5120-48Y-AFO2 supports high-density, high-throughput networking requirements.

Key Features

• 48 x 25GbE (SFP28) ports
• 8 x 100GbE (QSFP28) uplink ports
• Up to 2 Tbps Layer 2 and Layer 3 performance
• Latency as low as 550 nanoseconds
• Advanced EVPN-VXLAN support for overlay network architectures
• Compact 1U form factor with front-to-back airflow

Technical Specifications

• Model Number: QFX5120-48Y-AFO2
• Form Factor: 1U rack-mountable
• Dimensions (W x H x D): 17.36 x 1.72 x 20.48 inches (44.09 x 4.37 x 52.02 cm)
• Weight: Approximately 20.94 lbs (9.5 kg)
• Power Consumption: Typical: 260W; Maximum: 450W
• Airflow: Front-to-back (airflow out)
• Operating Temperature: 0°C to 40°C (32°F to 104°F)
• Relative Humidity: 5% to 90% (non-condensing)
• Switching Capacity: 2 Tbps
• Forwarding Rate: 1.31 Bpps
• Latency: As low as 550 nanoseconds
• MAC Addresses: Up to 288,000
• IPv4 Routes: Up to 351,000
• IPv6 Routes: Up to 168,000
• VLANs Supported: Up to 4,903
• Buffer Size: 32 MB shared buffer
• Redundancy: Hot-swappable, redundant power supplies and fans
• Management Interfaces: 2 x RJ-45 Ethernet ports, 1 x USB 2.0 port, 1 x RS-232 console port
• Operating System: Junos OS

Advanced Features

• Support for EVPN-VXLAN for scalable Layer 2 and Layer 3 overlays
• Multichassis Link Aggregation (MC-LAG) for active-active server connections
• Zero-Touch Provisioning (ZTP) for simplified deployment
• Automation support with Python scripting and event scripts
• Comprehensive Layer 2 and Layer 3 feature set including BGP, OSPF, IS-IS, and MPLS