BES-53248 Ethernet Storage Switch for Lenovo

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 high-availability 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

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.

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 high-availability software features.
• Allows switch management integration into third-party management applications by supporting the REpresentational State Transfer (REST) Application Program Interface (API).

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 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.

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.

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).

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.

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.

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 network cables that can be used with the switch are listed in the following table.

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/bes-switch):

• 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

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)

The BES-53248 Ethernet Storage Switch for Lenovo provides rear-to-front airflow with six variable-speed, hot-swap system fans with N+2 cooling redundancy.

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).

The BES-53248 Ethernet Storage Switch for Lenovo must be ordered together the tool-less slide rail kit. The tool-less 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.

* 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.

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)

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

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 9x5 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
• 9x5 service coverage with next business day onsite response
• 24x7 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.

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.

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

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 are as follows:

• ThinkSystem DM Series
• ThinkSystem DG Series

For more information, see the Product Guides for the DM and DG storage systems:

• https://lenovopress.lenovo.com/storage/thinksystem/dm-series#rt=product-guide
• https://lenovopress.lenovo.com/storage/thinksystem/dg-series#rt=product-guide

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/MCC-MetroCluster_IP_Installation_and_Configuration_Guide/5F52B0DD-3DE1-4D0C-BBE2-FDA96EC47E68_.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