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Lenovo Flex System EN4023 10Gb Scalable Switch
Product Guide
The Lenovo® Flex System™ EN4023 10Gb Scalable Switch is a high-performance 10 Gigabit Ethernet (GbE)
embedded switch that supports the most demanding business applications. It is designed for both LAN and SAN
environments, offering Layer 2 and Layer 3 features for the LAN and support for connectivity to almost any kind
of SAN including FCoE, Fibre Channel, iSCSI, and NAS storage.
The EN4023 is one of the most flexible switches in the blade market and also leverages Brocade's Virtual Cluster
Switching (VCS) Fabric which is designed to improve network utilization, maximize application availability,
increase scalability, and dramatically simplify network deployment and management.
The following figure shows the Lenovo Flex System EN4023 10Gb Scalable Switch.
Figure 1. Lenovo Flex System EN4023 10Gb Scalable Switch
Did you know?
The EN4023 switch features Brocade VCS Fabric technology that enables organizations to build high-
performance, cloud-optimized data centers while preserving existing network designs and cabling, and gaining
active-active server connections. Brocade VCS Fabric technology provides a scale-out architecture which allows
organizations to flatten network designs, provide virtual machine (VM) mobility without network reconfiguration,
and manage the entire fabric more efficiently.
The EN4023 is the industry's first offering that supports 16 Gbps Fibre Channel connectivity on an embedded
FCoE switch, which makes the EN4023 the best choice for flash storage, databases, or other environments that
need more storage bandwidth.
The EN4023 is one of the lowest latency switches for Ethernet and FCoE traffic, and it utilizies a single ASIC
design to achieve sub-microsecond port to port latencies, while also providing one of the largest aggregated
throughput of 1.28 Tbps. Additionally, the EN4023 can support more FC uplinks than any other vendor's
converged switch by using an optional Flex Port technology license upgrade.
Check for Updates
Lenovo Flex System EN4023 10Gb Scalable Switch
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Summary of Contents for Lenovo Flex System EN4023
- Page 1 Lenovo Flex System EN4023 10Gb Scalable Switch Product Guide The Lenovo® Flex System™ EN4023 10Gb Scalable Switch is a high-performance 10 Gigabit Ethernet (GbE) embedded switch that supports the most demanding business applications. It is designed for both LAN and SAN environments, offering Layer 2 and Layer 3 features for the LAN and support for connectivity to almost any kind of SAN including FCoE, Fibre Channel, iSCSI, and NAS storage.
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Page 2: Part Number Information
Feature code Switch module Lenovo Flex System EN4023 10Gb Scalable Switch 94Y5212 ESWD Features on Demand upgrades Flex System EN4023 10Gb Scalable Switch (FoD 1) 94Y5158 ESWE Flex System EN4023 10Gb Scalable Switch (FoD 2) 94Y5159 ESWF Flex System EN4023 10Gb Scalable Switch (FoD 3) -
Page 3: Supported Cables And Transceivers
LC fiber optics cables for distances up to 100 m with OM3 multi-mode fiber or up to 125 m with OM4 multi-mode fiber. These transceivers can operate at 4/8/16 Gbps speeds. The following table lists the supported transceivers and cables. Table 3. Supported transceivers and direct-attach cables Lenovo Flex System EN4023 10Gb Scalable Switch... - Page 4 Serial console cables Flex System Management Serial Access Cable Kit 90Y9338 A2RR SFP transceivers - 1 GbE Lenovo 1000BASE-T SFP Transceiver (does not support 10/100 Mbps) 00FE333 A5DL Lenovo 1000BASE-SX SFP Transceiver 81Y1622 3269 Lenovo 1000BASE-LX SFP Transceiver...
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Page 5: Features And Benefits
Network-Attached Storage (NAS) Auto QoS intelligence prioritizes delay-sensitive IP storage traffic within the fabric and help ensure consistent performance while decreasing latency. EN4023 10Gb Scalable Switch features 14 Flex Ports, which can take either a 10/1 GbE or Lenovo Flex System EN4023 10Gb Scalable Switch... - Page 6 Lenovo Flex System EN4023 switches can facilitate an optimal IP storage network by delivering a fabric-based network architecture to manage the network and storage holistically. At the same...
- Page 7 VCS fabrics provide support for OpenFlow 1.3, an industry-standard SDN communications protocol, allowing operators to address complex network behavior, optimize performance, and leverage a richer set of capabilities. Lenovo Flex System EN4023 10Gb Scalable Switch...
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Page 8: System Specifications
System specifications The Flex System EN4023 10Gb Scalable Switch has the following specifications: Internal ports: 42 internal full-duplex 10 Gigabit ports (optional Upgrade 1 and Upgrade 2 license upgrades are required to activate all ports). Two internal full-duplex 1 GbE ports that are connected to the chassis management module. - Page 9 TRILL FGL-based VCS Virtual Fabric feature Brocade VCS Gateway for NSX with VMware NSX Orchestration Virtual fabric extension Automatic Migration of Port Profiles (AMPP) VM-Aware Network Automation BFD for virtual fabric extension IP storage: Lenovo Flex System EN4023 10Gb Scalable Switch...
- Page 10 Range CLI support UDLD OpenStack Neutron ML2 plugin Python Puppet Software-Defined Networking (SDN) and programmability: OpenFlow 1.3 VXLAN Gateway REST API with YANG data model Puppet Python Security Port-based Network Access Control 802.1X RADIUS Lenovo Flex System EN4023 10Gb Scalable Switch...
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Page 11: Supported Standards
I/O modules are normally installed in pairs because ports on the I/O adapters that are installed in the compute nodes are routed to two I/O module bays for redundancy and performance. Lenovo Flex System EN4023 10Gb Scalable Switch... - Page 12 Chassis with CMM2 CMM2 Lenovo Flex System EN4023 10Gb Scalable Switch 94Y5212 The connections between the adapters that are installed in the compute nodes to the EN4023 installed in the I/O bays in the chassis are shown in the following figure. The figure shows both half-wide servers, such as the x240 with two adapters, and full-wide servers, such as the x440 with four adapters.
- Page 13 Figure 3. Logical layout of the interconnects between I/O adapters and the EN4023 modules The following table shows the connections between adapters that are installed in the compute nodes to the EN4023 modules installed in the I/O bays in the chassis. Lenovo Flex System EN4023 10Gb Scalable Switch...
- Page 14 * Depending on the number of compute nodes and uplinks, Ports 3, 4, 5, and 6 might require an optional FoD port upgrade of the EN4023 (see Table 2). The following table lists the I/O adapters that are supported by the EN4023 10Gb Scalable Switches. Lenovo Flex System EN4023 10Gb Scalable Switch...
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Page 15: Connectors And Leds
Compute Node. The positions of the adapters in the other supported servers are similar. Figure 4. Location of the I/O adapter slots in the Flex System x240 Compute Node Connectors and LEDs Lenovo Flex System EN4023 10Gb Scalable Switch... -
Page 16: Network Cabling Requirements
Connectors and LEDs The following figure shows the front panel of the EN4023 10Gb Scalable Switch. Figure 5. Front panel of the Lenovo Flex System EN4023 10Gb Scalable Switch The front panel contains the following components: Light-emitting diodes (LEDs) that display the status of the interconnect module and the network: The OK LED indicates that the interconnect module passed the power-on self-test (POST) with no critical faults and is operational. -
Page 17: Warranty
90Y9338) Warranty The Lenovo Flex System EN4023 carries a 1-year, customer-replaceable unit (CRU) limited warranty. When installed in a chassis, these I/O modules assume your system’s base warranty and any Lenovo Services warranty upgrades. Physical specifications Lenovo Flex System EN4023 10Gb Scalable Switch... -
Page 18: Agency Approvals
STP is eliminated, is highly resilient and efficient, and it allows network administrators to manage the entire network as a single logical switch. The connectivity topology, which can be used with the EN4023 switches and the Brocade VDX upstream network devices, is shown in the following figure. Lenovo Flex System EN4023 10Gb Scalable Switch... - Page 19 Figure 7. EN4023 connectivity topology - Inter-Switch Links between chassis Direct connection without ToR switches In this topology, shown in the following figure, the EN4023 switches are connected directly to the upstream network via vLAGs. Lenovo Flex System EN4023 10Gb Scalable Switch...
- Page 20 In this access-layer topology, aggregation is split between two physical switches, and each EN4023 is connected to both ToR switches through static or Link Aggregation Control Protocol (LACP)-aggregated links. Compute Node's NICs are configured in an active/active NIC teaming. This topology can be used to insert Lenovo Flex System EN4023 10Gb Scalable Switch...
- Page 21 Brocade VCS Fabric technology into existing infrastructure, because it fully interoperates with existing LAN protocols, services, and architectures. The EN4023 can connect to the core and aggregations switches from Lenovo, Brocade, Cisco, Juniper, Arista, and any vendor that utilizes industry standard connectivity, is shown in the figure above.
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Page 22: Related Publications
Brocade VDX 6740 Switch Note: You also need SFP+ modules and optical cables (not shown in Table 8; see Table 3 for details) for the external 10 Gb Ethernet connectivity. Related publications Lenovo Flex System EN4023 10Gb Scalable Switch... - Page 23 Flex System Information Center at http://publib.boulder.ibm.com/infocenter/flexsys/information/index.jsp: Installation and User Guide The following documents are other useful references: US Announcement Letter for the Flex System EN4023 10Gb Scalable Switch http://ibm.com/common/ssi/cgi-bin/ssialias?infotype=dd&subtype=ca&&htmlfid=897/ENUS113-198 Flex System Enterprise Chassis Product Guide http://lenovopress.com/tips0865 Lenovo Press publication Lenovo Flex System Products and Technology , SG24-7984 http://lenovopress.com/sg248255...
- Page 24 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.
- Page 25 (® or TM), indicating US registered or common law trademarks owned by Lenovo at the time this information was published. Such trademarks may also be registered or common law trademarks in other countries. A current list of Lenovo trademarks is available on the Web at http://www.lenovo.com/legal/copytrade.html.