QFX5120-48T-AFI - Juniper Networks

The QFX5120-48T-AFI is a model within Juniper Networks' QFX5120 series of Ethernet switches, designed for high-performance data centre and campus deployments. This specific model offers 48 dual-speed 1GbE/10GbE RJ-45 copper downlink ports and 6 dual-speed 40GbE/100GbE QSFP+/QSFP28 uplink ports, all housed in a compact 1U form factor. The "AFI" designation indicates that the switch is configured for AC power input with front-to-back airflow, suitable for standard data centre environments.

Key Specifications

• Downlink Ports: 48 x 1GbE/10GbE RJ-45 copper

• Uplink Ports: 6 x 40GbE/100GbE QSFP+/QSFP28

• Switching Capacity: Up to 1.08 Tbps (unidirectional) / 2.16 Tbps (bidirectional)

• Latency: As low as 800 nanoseconds

• CPU: 2.2 GHz quad-core Intel processor

• Memory: 16 GB RAM

• Storage: 100 GB SSD

• Power Consumption: Typical 202 W / Maximum 251 W

• Airflow: Front-to-back (AFI)

• Form Factor: 1U rackmount

Deployment Use Cases

The QFX5120-48T-AFI is well-suited for:

• Data Center Top-of-Rack (ToR) Deployments: Providing high-density 10GbE connectivity for servers with high uplink capacity.

• Campus Distribution/Core Layers: Serving as a robust aggregation point with support for both 1GbE and 10GbE downlinks.

• Spine-and-Leaf Architectures: Acting as a leaf switch in spine-and-leaf network designs.

Software and Automation Features

Running on Junos OS, the QFX5120-48T-AFI supports advanced features such as:

• EVPN-VXLAN: For scalable and efficient Layer 2 and Layer 3 network virtualisation.

• BGP Add-Path, MPLS, and Layer 3 VPN: Enhancing routing capabilities and network segmentation.

• Automation: Integration with tools like Python, Ansible, and Zero-Touch Provisioning (ZTP) for streamlined operations.

• Virtual Chassis: Enabling multiple switches to operate as a single logical device, simplifying management.