Overview and requirements: BES-53248 switches

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For BES-53248 switch installation and maintenance, be sure to review OS support, part numbers, configuration requirements, and documentation requirements.

Operating system (OS) support

The BES-53248 switch supports the following:

  • EFOS firmware and later. The BES-53248 switch runs on a Broadcom-embedded OS known as Ethernet Fabric OS (EFOS). Support for 40/100 GbE cluster ports starts with EFOS firmware version and later.

  • ONTAP 9.5P8 and later. The Broadcom-supported BES-53248 cluster switches are designed to work in clusters ranging in size from two to 24 nodes in ONTAP 9.5P8 and later.

Switch component part numbers

The following table lists the part number and description for the BES-53248 cluster switch components, including the rack-mount rail kit, fans, and power supplies.

Part number Description


BES-53248, CLSW, 16Pt10/25GB, PTSX, BRDCM SUPP (PTSX = Port Side Exhaust)


BES-53248, CLSW, 16Pt10/25GB, PSIN, BRDCM SUPP (PSIN = Port Side Intake)


Rack mount rail kit Ozeki 4 post 19"


Fan, port side intake X190005


Fan, port side exhaust X190005


Power supply, port side intake X190005

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.


Power supply, port side exhaust X190005

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.

Configuration requirements

To configure your cluster, you need the appropriate number and type of cables and cable connectors for your cluster switches. Depending on the type of cluster switch you are initially configuring, you need to connect to the switch console port with the included console cable and you need specific network information.

Cluster switch port assignments

You can use the Broadcom-supported BES-53248 cluster switch port assignments table as a guide to configuring your cluster.

Switch ports Ports usage


10/25GbE cluster port nodes, base configuration


10/25GbE cluster port nodes, with licenses


100GbE cluster port nodes, with licenses, added right to left


100GbE cluster Inter-Switch Link (ISL) ports, base configuration

Port group speed constraint

On BES-53248 cluster switches, the 48 10/25GbE (SFP28/SFP+) ports are combined into 12 x 4-port groups as follows: Ports 1-4, 5-8, 9-12, 13-16, 17-20, 21-24, 25-28, 29-32, 33-36, 37-40, 41-44, and 45-48.

The SFP28/SFP+ port speed must be the same (10GbE or 25GbE) across all ports in the 4-port group.

Documentation requirements

You need specific switch and controller documentation to set up your BES-53248 cluster switch and ONTAP cluster.

Broadcom documentation

To set up the BES-53248 cluster switch, you need the following documents available from the Broadcom Support Site: Broadcom Ethernet Switch Product Line

Document title Description

EFOS Administrator’s Guide v3.4.3

Provides examples of how to use the BES-53248 switch in a typical network.

EFOS CLI Command Reference v3.4.3

Describes the command-line interface (CLI) commands you use to view and configure the BES-53248 software.

EFOS Getting Started Guide v3.4.3

Provides detailed information about for the BES-53248 switch.

EFOS SNMP Reference Guide v3.4.3

Provides examples of how to use the BES-53248 switch in a typical network.

EFOS Scaling Parameters and Values v3.4.3

Describes the default scaling parameters with which EFOS software is delivered and validated on the supported platforms.

EFOS Functional Specifications v3.4.3

Describes the specifications for the EFOS software on the supported platforms.

EFOS Release Notes v3.4.3

Provides release-specific information about BES-53248 software.

Cluster Network and Management Network Compatibility Matrix

Provides information on network compatibility. The matrix is available from the BES-53248 switch download site at Broadcom cluster switches.

ONTAP systems documentation and KB articles

To set up an ONTAP system, you need the following documents from the NetApp Support Site at mysupport.netapp.com or the Knowledgebase (KB) site at kb.netapp.com.

Name Description

Describes the power and site requirements for all NetApp hardware, including system cabinets, and provides information on the relevant connectors and cable options to use along with their part numbers.

Controller-specific Installation and Setup Instructions

Describes how to install NetApp hardware.


Provides detailed information about all aspects of the ONTAP 9 release.

How to add additional port licensing for the Broadcom-supported BES-53248 switch

Provides detailed information on adding port licenses. Go to the KB article.