Lenovo Bes-53248 Ethernet Storage Switch User Guide

BES-53248 Ethernet Storage Switch

BES-53248 Ethernet Storage Switch for Lenovo
Product Guide
The BES-53248 Ethernet Storage Switch for Lenovo is an IP SAN storage switch that is designed and optimized to provide dedicated Ethernet storage fabric, including storage clustering in the data center and between the local and remote sites, and it offers 10/25/40/100 Gb Ethernet connectivity with “pay-as-you-grow” scalability. The switch delivers line-rate, high-bandwidth lossless switching that keeps storage data traffic moving without delays, while the hot-swap redundant power supplies and system fans (along with numerous highavailability software features) help provide high availability for business-critical traffic.
Running the Broadcom industry-leading Enterprise Fabric Operating System (EFOS), the BES-53248 Ethernet Storage Switches for Lenovo deliver production-ready networking software customized for IP storage solutions with advanced networking features and protocols required in the modern storage infrastructure for data center applications.
The BES-53248 Ethernet Storage Switch for Lenovo has 48x SFP28/SFP+ ports that support 10 GbE SFP+ and 25 GbE SFP28 optical transceivers and direct attach copper (DAC) cables. The switch also offers 8x QSFP28/QSFP+ ports that support 40 GbE QSFP+ and 100 GbE QSFP28 optical transceivers and DAC cables.
The BES-53248 Ethernet Storage Switches for Lenovo are ideally suited for enterprises of various sizes with all flash and NVMe IP Ethernet storage environments, as well as clustered storage deployments. The BES-53248 Ethernet Storage Switch for Lenovo is shown in the following figure.

Figure 1. BES-53248 Ethernet Storage Switch for Lenovo
Did you know?
The BES-53248 Ethernet Storage Switches for Lenovo are certified for MetroCluster IP deployments of the Lenovo ThinkSystem DM Series storage arrays.
The BES-53248 Ethernet Storage Switches for Lenovo are optimized for quick and easy deployments by tightly integrating with the hardware.
The BES-53248 Ethernet Storage Switches for Lenovo undergo extensive quality assurance testing to verify functional and system performance to accommodate the ever-increasing demands on storage network devices. Click here to check for updates

Key features

The BES-53248 Ethernet Storage Switch for Lenovo offers the following features and benefits:

• Provides validated, certified network interconnect for deploying clustered storage and MetroCluster IP configurations with the Lenovo ThinkSystem DM Series storage arrays.
• Offers high scalability in a dense, 1U network switch with 48x SFP28/SFP+ ports and 8x QSFP28/QSFP+ ports to support IP storage clustering, iSCSI, NVMe over RoCE, and flash-based storage environments.
• Enables cost-effective “pay-as-you-grow” scalability from 18 to 56 ports with Ports On Demand (POD). Increases performance and flexibility for demanding storage workloads with a combination of ultra-low latency and non-blocking, line-rate switching and support for 10/25/40/100 Gbps Ethernet links.
• Accelerates communications with lower latency across clustered applications and storage arrays with RDMA over Converged Ethernet (RoCE) and iWARP.
• Optimizes IP storage fabric behavior and ensures sufficient bandwidth for mission-critical applications with congestion management and advanced traffic scheduling.
• Simplifies deployment of large-scale environments by enabling a switch to automatically provision itself using the resources available on the network, without manual intervention, with Zero Touch Provisioning (ZTP) and AutoInstall.
• Supplies a rich set of standard features at no extra cost, including scalability and performance, availability and redundancy, virtual local area networks, security, quality of service, IPv4/IPv6 routing and host management, virtualization, data center fabric, monitoring, and management.
• Runs Enterprise Fabric OS, which deliver production-ready networking software customized for IP storage solutions with advanced networking features and protocols required in the modern storage infrastructure for data center applications.
• Maximizes resiliency with redundant hot-swap system fans and power supplies, along with numerous highavailability software features.
• Allows switch management integration into third-party  management applications by supporting  the REpresentational State Transfer (REST) Application Program Interface (API).

Components and connectors
The following figure shows the front (port-side) panel of the BES-53248 Ethernet Storage Switch for Lenovo.

Figure 2. Front panel of the BES-53248 Ethernet Storage Switch for Lenovo
The front panel of the BES-53248 Ethernet Storage Switch for Lenovo includes the following components:

• 48x SFP28/SFP+ ports to attach SFP28/SFP+ transceivers or DAC cables for 25 Gb or 10 Gb Ethernet connections.
• 8x QSFP28/QSFP+ ports to attach QSFP28/QSFP+ transceivers or DAC cables for 100 Gb or 40 Gb Ethernet connections.
• One RJ-45 10/100/1000 Mb Ethernet port for out-of-band management.
• One RJ-45 RS-232 console port that provides another means to configure the switch.
• One USB 2.0 port for mass storage devices.
• LEDs that display the status of the switch and the network.

The following figure shows the rear (non-port-side) panel of the BES-53248 Ethernet Storage Switch for Lenovo.

Figure 3. Rear panel of the BES-53248 Ethernet Storage Switch for Lenovo
The rear panel of the BES-53248 Ethernet Storage Switch for Lenovo includes the following components:

• Two redundant hot-swap 750 W AC power supplies (each with the IEC 320-C14 power connector).
• Six N+2 redundant hot-swap system fans.

System specifications

The following table lists the BES-53248 Ethernet Storage Switch for Lenovo system specifications.
Note: The supported hardware options and software features listed in this product guide are based on the Enterprise Fabric Operating System (EFOS) version 3.4.4.6. For details about current and future EFOS software releases that introduce support for certain hardware options and software features, refer to the Release Notes for the particular software release.
Table 1. BES-53248 Ethernet Storage Switch for Lenovo system specifications

Models
Factory-integrated models of the BES-53248 are configured by using the Lenovo Data Center Solution Configurator (DCSC): http://dcsc.lenovo.com
The factory-integrated models of the switch and their components and options, which are all described in this product guide, use the Configure-to-Order (CTO) base model that is listed in the following table. Table 2. CTO base model

The following table lists the system unit bases for the BES-53248 Ethernet Storage Switches for Lenovo.
Table 3. System unit bases

The packaging for the BES-53248 Ethernet Storage Switch for Lenovo models include the following items: One switch unit with two power supplies and six system fans.
Two customer-selected power cables.
RJ-45 to DB-9 serial console cable.
Statement paper.
Configuration notes: Power cables are not included and must be ordered together with the switch (see Power supplies and cables for details).
Transceivers and cables are not included and should be ordered for the switch (see Transceivers and cables for details).
The switch must be ordered together with the tool-less slide rail kit (see Rack installation).

Port activation licenses
The BES-53248 Ethernet Storage Switch for Lenovo ships with 16x SFP and 2x QSFP licensed ports active (transceivers are not included). The remaining 32x SFP and 6x QSFP unlicensed ports can be activated by purchasing and installing the Ports on Demand (POD) licenses.
The following table lists the POD licenses for the BES-53248 Ethernet Storage Switch for Lenovo. You can use a combination of these part numbers to activate the ports you want to use. For example, consider the following scenarios:

• To activate all ports, purchase three 7S0C001HWW, plus one 7S0C001NWW license.
• To activate the SFP ports purchase 1-4 7S0C001NWW licenses.
• To activate the QSFP ports purchase a single 7S0C001MWW license.
  Table 4. POD license option

Configuration note:
* Support a total of four of any mix of these licenses.
** For the first three POD licenses applied to the switch, each POD license activates 8x SFP and 2x QSFP ports.
The fourth POD license applied to the switch activates the remaining 8x SFP ports.
*** A max of 6 additional QSFP+ ports can be activated when buying this license consider only pairing with the 7S0C001NWW.
Transceivers and cables
With the flexibility of the BES-53248 Ethernet Storage Switch for Lenovo, customers can choose the following connectivity technologies:

• For 10 GbE links, customers can use SFP ports with 10 GbE SFP+ direct-attached copper (DAC) cables for distances up to 5 meters. For longer distances, the 10GBASE-SR SFP+ transceivers can be used for up to 300 meters on OM3 or up to 400 meters on OM4 MMF cables, and the 10GBASE-LR SFP+ transceivers can support distances up to 10 kilometers on SMF cables.
• For 25 GbE links, customers can use SFP ports with 25 GbE SFP28 DAC cables for distances up to 5 meters. For longer distances, the 25GBASE-SR SFP28 transceivers can be used for up to 70 meters on OM3 or up to 100 meters on OM4 MMF cables.
• For 40 GbE links, customers can use QSFP ports with QSFP+ to QSFP+ DAC cables for distances up to 5 meters. For longer distances, customers can use the 40GBASE-eSR4 QSFP+ transceivers for distances up to 300 meters on OM3 or up to 400 meters on OM4 MMF cables.
• For 100 GbE links, customers can use QSFP ports with QSFP28 DAC cables for distances up to 5 meters.
• For longer distances, the 100GBASE-SR4 QSFP28 transceivers can be used for distances up to 70 meters on OM3 or up to 100 meters on OM4 MMF cables.

Note: SFP ports are combined into 12 consecutive 4-port groups: 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 SFP port speed should be the same (10 Gbps or 25 Gbps) across all ports in the 4-port group.
The following tables list the supported cables and transceivers:

• Optical transceivers and cables
• DAC cables
• UTP cables
  Table 5. Optical transceivers and cables

Table 6. DAC cables

Table 7. UTP cables for 1 GbE management port

The network cables that can be used with the switch are listed in the following table.
Table 8. BES-53248 Ethernet Storage Switch for Lenovo network cabling requirements

Software

The BES-53248 Ethernet Storage Switch for Lenovo with offers the following software features (more information
can be found in documentation at on the BES-Switch Global Support: http://www.broadcom.com/support/besswitch):

• Scalability and performance:
• Media access control (MAC) address learning with automatic updates
• Static and 802.3ad Link Aggregation Control Protocol (LACP) link aggregation groups (LAGs)
• Configurable load balancing over LAGs (source or destination MAC, VLAN, or IP)
• Broadcast, multicast, and unicast storm recovery
• IPv4 IGMP/IPv6 MLD snooping and querier to limit flooding of IP multicast traffic

Availability and redundancy:

• 802.1D Spanning Tree Protocol (STP) for providing Layer 2 (L2) redundancy
• 802.1s Multiple STP (MSTP) for topology optimization
• 802.1w Rapid STP (RSTP) for rapid convergence for delay-sensitive traffic, such as voice
• Per-VLAN STP (PVSTP) and Rapid PVST (RPVSTP) enhancements
• Unidirectional Link Detection (UDLD) protocol
• Link dependency to support active/standby NIC configurations on the connected nodes
• L2 Loop Protection to detect loops in downstream switches that do not run STP
• Forward Error Correction (FEC) on ports operating at 25 Gbps and 100 Gbps speeds

Virtual Local Area Networks (VLANs):

• Up to 4094 VLANs
• Port-based, MAC-based, and protocol-based VLANs
• 802.1Q VLANs and VLAN tagging on all ports
• 802.1Q-in-Q VLAN tunneling (Double VLAN [DVLAN])
• Private VLANs
• Multicast VLAN Registration (MVR)

Security:

• MAC-, IPv4-, and IPv6-based access control lists (ACLs)
• Management access control and administration list (MACAL)
• 802.1x port-based network access control
• Protected ports
• Port security
• Multiple user IDs and passwords
• Privilege-based user access control
• Authentication and authorization through local user database, RADIUS, or TACACS+
• Protection from Denial of Service (DoS) attacks
• DHCP snooping (IPv4/IPv6)
• IP Source Guard (IPv4/IPv6)

Quality of Service (QoS):

• IEEE 802.1p, IP ToS/DSCP, DiffServ, and ACL-based traffic classification and processing
• Multiple Class of Service (COS) queues per port for processing qualified traffic
• Tail dropping, Weighted Random Early Discard (WRED), or strict priority queue scheduling
• Traffic shaping and re-marking based on defined policies
• IPv4/IPv6 ACL metering

IP v4 Layer 3 functions:

• Host management
• Routed ports (Switch ports as Layer 3 interfaces)
• Address Resolution Protocol (ARP) and Proxy ARP
• IP forwarding
• IP filtering with ACLs
• Static routes
• Dynamic routing protocols:
• Routing Information Protocol (RIP) v1/v2
• Open Shortest Path First (OSPF) v2
• Border Gateway Protocol (BGP) v4
• Distance Vector Multicast Routing Protocol (DVMRP)
• Equal Cost Multiple Paths (ECMP)
• Virtual Router Redundancy Protocol (VRRP) v3
• Policy-based routing (PBR)
• Dynamic Host Configuration Protocol (DHCP) server, client, and relay operations
• Internet Group Management Protocol (IGMP) v2/v3
• Protocol Independent Multicast (PIM) in Sparse Mode (PIM-SM) and Dense Mode (PIM-DM)
• Domain Name System (DNS) client
• IPv6 Layer 3 functions:
• IPv6 host management
• Routed ports (Switch ports as Layer 3 interfaces)
• Neighbor Discovery
• IPv6 forwarding
• IPv6 filtering with ACLs
• Static routes
• Dynamic routing protocol: OSPF v3
• ECMP
• VRRP v3
• PBR
• DHCP server, client, and relay operations
• Multicast Listener Discovery (MLD)
• PIM-SM and PIM-DM
• DNS client
• Virtualization:
• Virtual Port Channels (VPCs): Two peer switches form a single virtual entity for link aggregation (MLAG)
• Virtual Routing and Forwarding (VRF) Lite: Multiple routing domains on the same switch
• Data Center Virtual Private Network (DCVPN) Gateway: VXLAN/NVGRE communications with another network
• Software Defined Networking (SDN): OpenFlow 1.0 and 1.3
• Converged Enhanced Ethernet:
• Priority-Based Flow Control (PFC): Pausing traffic based on priority to eliminate frame loss due to congestion on a link
• Enhanced Transmission Selection (ETS): Allocating link bandwidth based on priority
• Congestion Notification (CN): Congestion management for loss- or latency-sensitive network data flows
• Data Center Bridging Capability Exchange Protocol (DCBX): Exchanging configuration information with directly connected peers

Monitoring:

• Switch LEDs for port status and switch status indication
• Port mirroring (Switched Port Analyzer [SPAN] / Remote SPAN [RSPAN] / Encapsulated RSPAN [ERSPAN])
• Remote Monitoring (RMON) agent to collect statistics and monitor switch performance
• Buffered log, console log, and syslog for change tracking and logging
• Email alerts
• sFlow agent for monitoring traffic in data networks (an sFlow analyzer required elsewhere)

Manageability:

• Command line interface (CLI)
• Serial interface
• Telnet
• Secure Shell (SSH) v2
• Scriptable CLI
• Simple Network Management Protocol (SNMP V1, V2, and V3)
• NETCONF (XML)
• RESTCONF (HTTP)
• AutoInstall and Zero Touch Provisioning (ZTP) for automated switch software image upgrade and configuration
• HTTP, HTTPS, TFTP, FTP, Secure FTP (sFTP), and Secure Copy (SCP) file transfer protocols
• Industry Standard Discovery Protocol (ISDP) for discovering Cisco devices running CDP
• Link Layer Discovery Protocol (LLDP) for discovering network devices
• Dual firmware images
• Simple Network Time Protocol (SNTP) and Precision Time Protocol (PTP) for switch clock synchronization
• RESTful API

Ethernet standards

The BES-53248 Ethernet Storage Switch for Lenovo supports the following IEEE Ethernet standards:

• IEEE 802.1Q VLANs
• IEEE 802.3ac VLAN Tagging
• IEEE 802.1v Protocol-based VLANs
• IEEE 802.1D Spanning Tree Protocol (STP)
• IEEE 802.1s Multiple STP (MSTP)
• IEEE 802.1w Rapid STP (RSTP)
• IEEE 802.3ad Link Aggregation Control Protocol
• IEEE 802.1p Class of Service (CoS) prioritization
• IEEE 802.3x Full-duplex Flow Control
• IEEE 802.1Qau Congestion Notification (CN)
• IEEE 802.1Qaz Enhanced Transmission Selection (ETS)
• IEEE 802.1Qbb Priority-Based Flow Control (PFC)
• IEEE 802.3bj-CL91: Forward Error Correction (FEC)
• IEEE 802.1AB Link Layer Discovery Protocol (LLDP)
• IEEE 802.1AB Data Center Bridging Capability Exchange Protocol (DCBX) (LLDP extension)
• IEEE 802.3ae 10GBASE-SR short range fiber optics 10 Gb Ethernet
• IEEE 802.3ae 10GBASE-LR long range fiber optics 10 Gb Ethernet
• IEEE 802.3by 25GBASE-CR copper 25 Gb Ethernet
• IEEE 802.3by 25GBASE-SR short range fiber optics 25 Gb Ethernet
• IEEE 802.3ba 40GBASE-CR4 copper 40 Gb Ethernet
• IEEE 802.3ba 40GBASE-SR4 short range fiber optics 40 Gb Ethernet
• IEEE 802.3bj 100GBASE-CR4 copper 100 Gb Ethernet
• IEEE 802.3bm 100GBASE-SR4 short range fiber optics 100 Gb Ethernet
• IEEE 802.3 10BASE-T Ethernet (Ethernet management port only)
• IEEE 802.3u 100BASE-TX Fast Ethernet (Ethernet management port only)
• IEEE 802.3ab 1000BASE-T copper twisted pair Gigabit Ethernet (Ethernet management port only)

Cooling
The BES-53248 Ethernet Storage Switch for Lenovo provides rear-to-front airflow with six variable-speed, hotswap system fans with N+2 cooling redundancy.
Power supplies and cables
The BES-53248 Ethernet Storage Switch for Lenovo ships with two load-sharing, redundant hot-swap 750 W AC power supplies.
The BES-53248 Ethernet Storage Switch for Lenovo ships with two customer-selected power cables. The following table lists power cables that are available for selection (two power cables are required per switch).
Table 9. Power cable options

Rack installation
The BES-53248 Ethernet Storage Switch for Lenovo must be ordered together the tool-less slide rail kit. The toolless slide rail kit is used for installing the switch in a 4-post, IEC standard-compliant rack cabinet with square or round mounting holes and distance between front and rear mounting flanges from 685.8 mm (27 in.) to 812.8 mm (32 in.). The following table lists the tool-less slide rail kit.
Table 10. Tool-less slide rail kit

• Field upgrade only; ships in a separate box.
  Configuration note: The switch must be ordered together with the BES Standard 4-post 19″ Rack Mount Rail Kit.

Physical specifications
The BES-53248 Ethernet Storage Switch for Lenovo has the following dimensions and weight (approximate):

• Height: 43 mm (1.7 in.)
• Width: 440 mm (17.3 in.)
• Depth: 508 mm (20.0 in.)
• Weight (maximum): 9.7 kg (21.4 lb)

Operating environment

The BES-53248 Ethernet Storage Switch for Lenovo is supported in the following operating environment:

• Temperature: 0 – 45 ºC (32 – 113 ºF).
• Relative humidity: 10 – 90% (Non-condensing)
• Altitude: Up to 900 m (2,952 feet)
• Acoustic noise: Less than 70 dB
• Electrical input:
• 100 – 240 V AC auto-switching, 50 / 60 Hz
• 3.3 A max (100 V AC), 1.65 A max (200 V AC)
• Power consumption
• Typical: 229 W
• Maximum: 330 W
• Heat dissipation
• Typical: 782 BTU/hour
• Maximum: 1127 BTU/hour

Warranty and support

The warranty service for the BES-53248 Ethernet Storage Switch for Lenovo is provided by Broadcom and Tech Data. Customers should submit service tickets for switch-related issues through the support portal or by calling one of the dedicated numbers found here: http://servicesbytechdata.force.com/BESSwitch/s/login/
In the environments with the BES-53248 Ethernet Storage Switches for Lenovo and Lenovo ThinkSystem DM Series, customers may submit service tickets to Lenovo. Lenovo will perform problem determination and resolution for DM Series-related issues and escalate to Tech Data, on behalf of the customer, for switch-related problem determination. Broadcom or Tech Data will contact the customer and will own the switch-related problem resolution until closure.
The BES-53248 Ethernet Storage Switch for Lenovo comes with a 1-year base warranty with 9×5 Next Business Day (NBD) parts delivered and includes entitlement to code fixes and updates over that period. Also available are warranty service upgrades, with a well-defined scope of services, including service hours, response time, term of service, and service agreement terms and conditions.
The following warranty service upgrades are available for the BES-53248 Ethernet Storage Switch for Lenovo:

• 3 or 5 years of warranty service coverage
• Foundation Service: 9×5 service coverage with next business day onsite response
• Essential Service: 24×7 service coverage with 4-hour onsite response

Notes:

• The options installed in the switch assume the switch’s base warranty and any warranty service upgrade for the switch. Any cable- or transceiver-specific issues will be transferred to Lenovo for resolution. Warranty service upgrades include entitlement to code fixes and updates over the duration of the selected service coverage period.
• The following table lists warranty service upgrades that are available for the BES-53248 Ethernet Storage Switch
  for Lenovo.

Table 11. Warranty service upgrades

Lenovo warranty service upgrade offerings are region-specific. Not all warranty service upgrades are available in every region. For information about Lenovo warranty service upgrade offerings that are available in your region, refer to the following resource:
Service upgrade part numbers for the BES-53248 Ethernet Storage Switch for Lenovo in the DCSC: https://dcsc.lenovo.com/#/software?id=STG%40Software%40Other%20SW%40BES53248
Contact a local Lenovo representative for details on region-specific support and details on response times.
Some regions might have different warranty terms and conditions than the standard warranty. Local Lenovo sales representatives can assist in explaining region-specific terms when needed. Examples of region-specific warranty terms are second or longer business day parts delivery or parts-only warranty.
If warranty terms and conditions include onsite labor for repair or replacement of parts, a service technician is dispatched to the customer site to perform the replacement.
If warranty terms include parts-only warranty, only replacement parts that are under warranty will be sent to a requested location for self-service. Parts-only service does not include a service technician being dispatched onsite. Parts must be changed at customer’s own cost and labor and defective parts must be returned following the instructions supplied with the spare parts.
For service definitions, region-specific details, and service limitations, please refer to the following resources:

• BES-Switch Support and Services User Guide
  http://docs.broadcom.com/doc/bes-switch-end-user-support-user-guide
• BES-Switch Contact Switch Support
  http://servicesbytechdata.force.com/BESSwitch

Note: These resources might contain additional SLA options that are not offered by Lenovo. Please contact a local Lenovo sales representative in your region for any specific questions.

Regulatory compliance
The BES-53248 Ethernet Storage Switch for Lenovo conforms to the following regulations:

• Safety:
• UL
• cUL
• CB
• CCC
• BSMI

Electromagnetic compatibility (EMC):

• FCC
• CE
• VCCI
• CCC
• BSMI
• Environmental: Reduction of Hazardous Substances (ROHS) 6

Storage connectivity
The following table lists the external storage systems that are currently offered by Lenovo that can be used with  the BES-53248 Ethernet Storage Switches for Lenovo for storage clustering and MetroCluster IP configurations.Table 12. External storage systems: DM Series

* Preconfigured models that are available only in North America (part numbers that have NA at the end) or EMEA (part numbers that have EA at the end) and require Preconfigured support to be purchased with the storage system (See the respective product guide for details).
For more information, see the list of Product Guides in the Lenovo Storage category: http://lenovopress.com/storage/san/lenovo#rt=product-guide

Related publications and links
For more information, see the following resources: BES-53248 Switch Lenovo Welcome Letter https://download.lenovo.com/storage/bes_switch_lenovo_welcome_letter_july_2021.pdf
BES-53248 MetroCluster IP Configuration http://thinksystem.lenovofiles.com/storage/help/topic/MCCMetroCluster_IP_Installation_and_Configuration_Guide/5F52B0DD-3DE1-4D0C-BBE2FDA96EC47E68_.html
Lenovo Data Center Networking product page
https://www.lenovo.com/us/en/c/data-center/storage/storage-area-network
Lenovo Data Center Solution Configurator http://dcsc.lenovo.com
BES-Switch Global Support:  http://www.broadcom.com/support/bes-switch
Port License Redemption Download the latest EFOS releases Product documentation Support Access guides in multiple languages Contact switch support
Related product families
Product families related to this document are the following:

• Rack SAN Switches

Notices

Lenovo may not offer the products, services, or features discussed in this document in all countries. Consult your local Lenovo representative for information on the products and services currently available in your area. Any reference to a Lenovo product, program, or service is not intended to state or imply that only that Lenovo product, program, or service may be used. Any functionally equivalent product, program, or service that does not infringe any Lenovo intellectual property right may be used instead. However, it is the user’s responsibility to evaluate and verify the operation of any other product, program, or service. Lenovo may have patents or pending patent applications covering subject matter described in this document. The furnishing of this document does not give you any license to these patents. You can send license inquiries, in writing, to: Lenovo (United States), Inc. 8001 Development Drive
Morrisville, NC 27560
U.S.A.
Attention: Lenovo Director of Licensing
LENOVO PROVIDES THIS PUBLICATION ”AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR  IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF NON-INFRINGEMENT,MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some jurisdictions do not allow disclaimer of express or implied warranties in certain transactions, therefore, this statement may not apply to you. This information could include technical inaccuracies or typographical errors. Changes are periodically made to the information herein; these changes will be incorporated in new editions of the publication. Lenovo may make improvements and/or changes in the product(s) and/or the program(s) described in this publication at any time without notice. The products described in this document are not intended for use in implantation or other life support applications where malfunction may result in injury or death to persons. The information contained in this document does not affect or change Lenovo product specifications or warranties. Nothing in this document shall operate as an express or implied license or indemnity under the intellectual property rights of Lenovo or third parties. All information contained in this document was obtained in specific environments and is presented as an illustration. The result obtained in other operating environments  may vary. Lenovo may use or distribute any of the information you supply in any way it believes appropriate without incurring any obligation to you.
Any references in this publication to non-Lenovo Web sites are provided for convenience only and do not in any manner serve as an endorsement of those Web sites. The materials at those Web sites are not part of the materials for this Lenovo product, and use of those Web sites is at your own risk. Any performance data contained herein was determined in a controlled environment. Therefore, the result obtained in other operating environments may vary significantly. Some measurements may have been made on development-level systems and there is no guarantee that these measurements will be the same on generally available systems. Furthermore, some measurements may have been estimated through extrapolation. Actual results may vary. Users of this document should verify the applicable data for their specific environment.
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This document, LP1226, was created or updated on October 19, 2021.
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Lenovo and the Lenovo logo are trademarks or registered trademarks of Lenovo in the United States, other countries, or both. A current list of Lenovo trademarks is available on the Web at https://www.lenovo.com/us/en/legal/copytrade/.
The following terms are trademarks of Lenovo in the United States, other countries, or both: Lenovo®
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Other company, product, or service names may be trademarks or service marks of others.

BES-53248 Ethernet Storage Switch for Lenovo

References

• DCSC - Data Center Solution Configurator
• docs.broadcom.com/doc/bes-switch-end-user-support-user-guide
• Lenovo Storage > Lenovo Press
• servicesbytechdata.force.com/BESSwitch
• Login Template Title
• ONTAP - Configuring Broadcom IP switches
• BES-Switch Global Support
• DCSC - Data Center Solution Configurator
• DCSC - Data Center Solution Configurator
• BES-53248 Ethernet Storage Switch for Lenovo Product Guide > Lenovo Press
• Rack SAN Switches > Lenovo Press
• Storage Area Network | Enterprise SAN Systems & Products | Lenovo US
• Copyright and Trademark Information | Lenovo US | Lenovo US