The Juniper QFX5120-48Y-AFO2 is a high-performance, low-latency data center switch from the Juniper QFX5120 Series, designed for modern cloud, enterprise, and spine-leaf network architectures. It is optimized for high-density 25G server connectivity with scalable 100G uplinks, making it ideal for high-performance data center deployments.
This switch features 48x SFP28 ports supporting 1G, 10G, and 25G Ethernet, along with 8x QSFP28 uplink ports supporting 40G and 100G connectivity, providing flexible and high-speed networking options.
Built in a compact 1U form factor, the QFX5120-48Y-AFO2 delivers up to 4 Tbps switching capacity with ultra-low latency (around ~800 ns), ensuring wire-speed Layer 2 and Layer 3 performance for demanding workloads.
The AFO2 airflow design indicates back-to-front airflow (port-side exhaust), making it suitable for hot aisle/cold aisle data center environments depending on rack cooling design.
It runs on Juniper Junos OS, offering advanced networking features such as EVPN, VXLAN, MPLS, BGP, and automation capabilities for scalable and programmable network operations.
With redundant power supplies and hot-swappable fan modules, it ensures high availability and reliability for mission-critical deployments.
It is widely used in Top-of-Rack (ToR), leaf layer, and campus distribution deployments, where high bandwidth, low latency, and scalability are essential.
🔑 Key Features:
48x 1/10/25G SFP28 ports
8x 40/100G QSFP28 uplink ports
Up to 4 Tbps switching capacity
Ultra-low latency (~800 ns)
AFO2 airflow (back-to-front cooling)
Junos OS with advanced L2/L3 features
EVPN-VXLAN and automation support
Redundant PSU and hot-swappable fans
1RU rack-mountable design
