Overview of the Broadcom BES-53248 cluster switch
The BES-53248 cluster switches are designed to work in clusters ranging in size from two to 24 controllers in ONTAP 9.6 and later.
BES-53248 is a bare metal switch running on a Broadcom embedded OS known as Ethernet Fabric OS (EFOS).
Port-side exhaust airflow (standard air): Cool air enters the chassis through the fan and power supply modules in the cold aisle and exhausts through the port end of the chassis in the hot aisle. Blue coloring indicates port-side exhaust airflow. This is the most common option.
Port-side intake airflow (reverse air): Cool air enters the chassis through the port end in the cold aisle and exhausts through the fan and power supply modules in the hot aisle.
See the https://fod2.lenovo.com/lkms/angular/app/pages/index.htm#/welcome for details on adding additional port licenses.
For information on the relevant connectors and cable options to use along with their part numbers, see the https://lenovopress.com/.
For more information, see the Cluster Network and Management Network Compatibility Matrix available from the Broadcom BES-53248 switch download site: https://download.lenovo.com/storage/lenovo_storage_dm3kh_5kh_7kh_5kf_7kf_fw9.6p1_interop_matrix_v1.0.xlsx