Juniper QFX5120-48Y-AFO

The Juniper Networks QFX5120-48Y-AFO is a high-performance, low-latency 1U fixed-configuration data center switch designed for top-of-rack (leaf) deployments or campus enterprise aggregations.

Port Density & Performance
Downlink Ports: 48 × 1/10/25GbE SFP28 ports.
Uplink Ports: 8 × 40/100GbE QSFP28 ports (supports channelization into 4×25GbE or 4×10GbE).
Switching Capacity: 4 Tbps bidirectional throughput.
Forwarding Rate: Up to 2 Bpps (billion packets per second).
Latency: Extremely low packet delivery speeds down to 550–800 nanoseconds.

Key Hardware & Operational
SpecsAirflow: AFO stands for Airflow Out (Front-to-Back / Port-Side Intake), color-coded with red handles.
Power Supplies: Two hot-swappable AC power supplies providing 1+1 redundancy.
Operating System: Runs Junos OS, offering full Layer 2/Layer 3 switching, advanced routing, and security services.
Architecture Support: Native support for EVPN-VXLAN overlays to enable flexible network virtualization and spine-and-leaf architectures.