The QFX5100-FAN-AFI is a Juniper-designed back‑to‑front airflow switch fan module specifically engineered for the QFX5100 series switches. This component delivers directed airflow from the rear to the front of the chassis, supporting efficient heat dissipation and maintaining optimal operating temperatures for the switch’s internal components. Designed to integrate seamlessly into the QFX5100 platform, the fan module is part of Juniper’s modular cooling strategy, ensuring reliable performance and extended equipment life in high‑density data‑center environments. It is compatible with existing QFX5100 chassis and can be installed without major modifications, providing a straightforward upgrade path for operators seeking to enhance cooling capacity.