Description

QFX5120‑48Y‑AFI2 Data Center Ethernet Switch

Technical Specifications

• Product Model: QFX5120‑48Y‑AFI2
• Brand: Juniper Networks
• Warranty: One Year
• Input Voltage: 100‑240 V AC dual redundant power supply
• Operating Temperature: 0 °C ~ +40 °C
• Storage Temperature: ‑40 °C ~ +70 °C
• Response Time: Typical forwarding latency 550 nsJuniper Ne…
• Protection Class: IP20 19‑inch rack‑mount 1U unit
• Accuracy Class: Not applicable
• Output Frequency: Not applicable
• Rated Current: Max power consumption 272 WJuniper Ne…
• Port Configuration: 48 × SFP28 (1/10/25 GbE), 8 × QSFP28 (40/100 GbE)Juniper Ne…
• Switching Capacity: Up to 4 Tbps bidirectional throughputJuniper Ne…
• Software OS: Junos OS, supports EVPN, BGP, MPLS, IPv6
• Airflow: AFI2: Back‑to‑front airflow for cold‑aisle deployment
• Memory / Storage: 16 GB RAM, 50 GB SSD storageJuniper Ne…
• Interfaces: RJ45 management port, console RS‑232, USB 2.0
• Certifications: CE, FCC, RoHS
• Humidity: 5‑90 % RH, non‑condensing
• Weight: 7.2 kg
• Dimensions: 440 × 43 × 520 mm (1U)
• 

Product Overview

QFX5120‑48Y‑AFI2 is a high‑density leaf‑switch for data‑center and industrial high‑speed network. It delivers 25 GbE downlink and 100 GbE uplink port capacity, runs Junos OS with rich enterprise‑grade L2/L3 network features. Back‑to‑front airflow design fits cold‑aisle cabinet layout. It supports telemetry streaming for real‑time network performance monitoring. Widely used in data‑center leaf‑spine architecture, factory high‑speed industrial‑Ethernet backbone. Available as refurbished and surplus spare hardware for network‑infrastructure upgrade and replacement.

Application Notes

‑ Requires compatible SFP28 / QSFP28 optical transceivers or DAC cables. ‑ Dual power supply is recommended for high‑availability deployment. ‑ Observe proper rack ventilation to avoid over‑heating. ‑ Typical deployment: enterprise data‑center, large‑factory industrial‑Ethernet backbone spare‑part stocking.