Brand: Juniper · SKU: QFX5120-48Y-AFO · MPN: QFX5120-48Y-AFO · Category: Networking

Juniper QFX5120-48Y-AFO 1U data center switch with 48x 1/10/25GbE SFP28 ports and 8x 40/100GbE QSFP28 uplinks delivering 4 Tbps bidirectional switching capacity with sub-microsecond latency, a 288K MAC address table, dual redundant 650W AC power supplies, and front-to-back (AFO) airflow.
| Series | Juniper QFX5120 |
|---|---|
| Airflow | Front-to-back (AFO) |
| Latency | As low as ~550 ns |
| Form Factor | 1U Rack-Mountable |
| SFP28 Ports | 48x 1/10/25GbE SFP28 |
| Power Supply | Redundant hot-swappable 650W AC (2x) |
| Product Type | Ethernet Switch (Data Center Leaf/Access) |
| QSFP28 Ports | 8x 40/100GbE QSFP28 |
| Operating System | Junos OS |
| MAC Address Table | 288,000 entries |
| Total Number of Ports | 56 |
| Maximum Data Transfer Rate | 4 Tbps (bidirectional) |
| Warranty | 3-Year Warranty |
The Juniper QFX5120-48Y-AFO is a 1U top-of-rack/leaf switch offering 48 SFP28 ports that operate at 1/10/25GbE plus 8x 40/100GbE QSFP28 uplinks, with 2.0/4.0 Tbps of uni/bidirectional switching capacity, latency as low as ~550 nanoseconds, and a 288,000-entry MAC table. Running Junos OS, it supports EVPN-VXLAN, and its QSFP28 uplinks support 4x25GbE/4x10GbE breakout for flexible fabric design. The AFO designation indicates front-to-back airflow (port-side intake, FRU-side exhaust) with redundant hot-swappable 650W AC power supplies and fan modules. It is ideal for 25GbE server access in spine-leaf data center fabrics, delivering current-generation port speeds at a substantial discount when purchased refurbished.
Yes, this QFX5120-48Y-AFO - Juniper QFX5120 48x 25GbE SFP28 8x 100GbE QSFP28 Switch, AFO Airflow (QFX5120-48Y-AFO) is 100% genuine Juniper hardware. All our products are verified by certified technicians and come with clean serial numbers ready for service contract registration.
This QFX5120-48Y-AFO - Juniper QFX5120 48x 25GbE SFP28 8x 100GbE QSFP28 Switch, AFO Airflow includes our standard 3-Year Warranty covering all manufacturing defects. We also offer advanced replacement options for minimal downtime.
We offer free ground shipping which typically takes 3-5 business days. Expedited shipping options are available at checkout for faster delivery.
Yes, we have a 30-day return policy on all products. Restocking fees may apply for opened items. Please see our return policy for complete details.
Please check the specifications tab for detailed compatibility information. Our technical team is available to assist with compatibility questions for the QFX5120-48Y-AFO.