Juniper QFX5120‑48Y‑AFO / AFI – 48x 25GbE SFP28 + 8x 100GbE QSFP28 Data Center Switch (Front‑to‑Back / Back‑to‑Front Airflow)

Overview

The Juniper QFX5120‑48Y Series provides next‑generation server access with 48 x 25GbE SFP28 ports and 8 x 100GbE QSFP28 uplinks, enabling high‑density, low‑latency connectivity for data center and campus environments. Built on Juniper’s Q5 ASIC, these switches deliver wire‑rate performance, deep buffers, and advanced programmability to support converged workloads, virtualization, and cloud‑scale networking.

Key Features

• 48 x 25GbE SFP28 ports for high‑speed server access
• 8 x 100GbE QSFP28 uplinks for spine or aggregation connectivity
• Airflow options:
• QFX5120‑48Y‑AFO: Front‑to‑back airflow (hot aisle)
• QFX5120‑48Y‑AFI: Back‑to‑front airflow (cold aisle)
• Deep packet buffers for bursty traffic and microburst handling
• Advanced Layer 2/Layer 3 protocols: OSPF, BGP, EVPN‑VXLAN, MPLS
• Automation & Telemetry: Junos OS automation, streaming telemetry, ZTP
• High availability: Redundant hot‑swappable fans and power supplies
• MACsec encryption for secure data center interconnects

Benefits

• Scalable server access with 25GbE density and 100GbE uplinks
• Flexible deployment with airflow options for any rack orientation
• Cloud‑ready architecture supporting EVPN‑VXLAN overlays
• Operational efficiency with automation, telemetry, and Junos scripting
• Investment protection with modular uplinks and standards‑based protocols