QFX5120-48Y-AFO - Juniper Networks

The Juniper Networks QFX5120-48Y-AFO is a high-performance, 1U rack-mounted Ethernet switch designed for modern data centre and enterprise network environments. It is part of Juniper's QFX5120 series, which offers low-latency, high-throughput capabilities suitable for both top-of-rack (ToR) and aggregation layer deployments.

Key Specifications

• Port Configuration:

  • 48 x 25GbE SFP28 ports

  • 8 x 100GbE QSFP28 ports (configurable as 8x40GbE or 8x100GbE)

• Performance:

  • Aggregate throughput of up to 2 Tbps

  • Latency as low as 550 nanoseconds

• Form Factor:

  • 1U rackmount

  • Port-side intake and PSU-side exhaust airflow (AFO)

• Software:

  • Runs on Junos OS, providing a consistent control plane across Juniper devices

  • Supports advanced Layer 2 and Layer 3 features, including EVPN-VXLAN, MPLS, and MC-LAG 

• Use Cases:

  • Ideal for data centre leaf-and-spine architectures

  • Suitable for enterprise multicloud deployments requiring high-density 25GbE access and 100GbE uplinks