Lenovo ThinkSystem NE2572 User manual

Lenovo ThinkSystem NE2572 RackSwitch
Product Guide
The Lenovo ThinkSystem NE2572 RackSwitch is designed for the data center and provides
10 Gb/25 Gb Ethernet connectivity with 40 Gb/100 Gb Ethernet upstream links. It is ideal for big data,
cloud, and enterprise workload solutions. It is an enterprise class Layer 2 and Layer 3 full featured switch
that delivers line-rate, high-bandwidth switching, filtering, and traffic queuing without delaying data. Large
data center-grade buffers help keep traffic moving, while the hot-swap redundant power supplies and fans
(along with numerous high-availability software features) help provide high availability for business sensitive
traffic.
The NE2572 RackSwitch has 48x SFP28/SFP+ ports that support 10 GbE SFP+ and 25 GbE SFP28
optical transceivers, active optical cables (AOCs), and direct attach copper (DAC) cables. The switch also
offers 6x QSFP28/QSFP+ ports that support 40 GbE QSFP+ and 100 GbE QSFP28 optical transceivers,
active optical cables (AOCs), and direct attach copper (DAC) cables. The QSFP28/QSFP+ ports can also
be split out into four 10 GbE (for 40 GbE QSFP+) or 25 GbE (for 100 GbE QSFP28) connections by
using breakout cables.
The NE2572 RackSwitch is ideal for latency sensitive applications, such as high-performance computing
clusters and financial applications.
The NE2572 RackSwitch is shown in the following figure.
Figure 1. Lenovo ThinkSystem NE2572 RackSwitch
Did you know?
With exceptional port density and flexibility with break-out cables, the NE2572 RackSwitch can support up
to 72x 10 GbE / 25 GbE Ethernet connections or a mix of 10 GbE / 25 GbE server and storage connections
with 40 GbE or 100 GbE upstream network connections in a 1U rack form factor.
The NE2572 RackSwitch runs the Cloud Networking Operating System (CNOS) that provides a simple,
open and programmable network infrastructure with cloud-scale performance. It delivers a software-
defined Ethernet solution that is simple to manage and easy to deploy using common management tools,
and it enables support of automation and orchestration applications for tight integration into the data
center ecosystem.
Lenovo ThinkSystem NE2572 RackSwitch 1

Key features
The NE2572 RackSwitch runs the Cloud NOS that provides a simple, open and programmable network
infrastructure designed to scale for your business needs. Its intelligent, cloud-scale performance delivers a
software-defined Ethernet solution that is simple to manage and easy to deploy using common
management tools. Cloud NOS is based on open, industry standards for better data center interoperability,
and it enables support of automation and orchestration applications for tight integration into the data
center ecosystem.
With its high-performance architecture and support for an extensive set of routing protocols, Cloud NOS
provides reliable, high-performance fabric for traditional, converged and hyperscale solutions. Cloud NOS
can help you consolidate server and storage networks into a single fabric. Converged Enhanced Ethernet
delivers value for your iSCSI and NAS enterprise storage environments.
The NE2572 RackSwitch is considered particularly suited for the following environments:
Mixed 10 GbE and 25 GbE server and storage connectivity with 40 GbE and 100 GbE upstream
aggregation
Cloud and virtualization solutions with VM-aware network automation and integration into Lenovo
and third-party IT and cloud infrastructure management tools
Converged SAN and LAN network via NAS and iSCSI storage connectivity
Reduced I/O cost (CAPEX) with fewer adapters and cables to purchase
Reduced complexity (OPEX) with fewer components to manage and lower energy cost
Web-scale and hyperconverged solutions
Applications demanding better performance and lower latency
The NE2572 RackSwitch offers the following features and benefits:
High performance
The 10 Gb/25 Gb Ethernet NE2572 RackSwitch with 40 Gb/100 Gb Ethernet uplinks provides a
combination of low latency, non-blocking line-rate switching, and ease of management with 3.6
Tbps throughput.
Lower power and better cooling
The front-to-rear or rear-to-front cooling design of the NE2572 RackSwitch reduces data center air
conditioning costs by having airflow match the servers in the rack. In addition, variable speed fans
help reduce power consumption.
Layer 3 functionality
The NE2572 RackSwitch includes Layer 3 functionality, which provides security and performance
benefits, as inter-VLAN traffic stays within the switch. This switch also provides the full range of
Layer 3 protocols from static routes for technologies, such as Open Shortest Path First (OSPF) and
Border Gateway Protocol (BGP) for enterprise customers.
Network virtualization
The NE2572 switch supports VXLAN Gateway for VMware NSX integration. VMware NSX is a
virtualized network software platform that offers a full set of networking services, such as logical
switching, routing, firewall, load balancing, VPN, quality of service (QoS), and monitoring.
Converged fabric
The NE2572 RackSwitch supports Converged Enhanced Ethernet (CEE) which helps enable
customers to combine storage, messaging traffic, VoIP, video, and other data on a common data
center lossless Ethernet infrastructure. As a result, customers can deploy a single server interface
for multiple data types, which can simplify the deployment and management of server network
connectivity while maintaining the high availability and robustness that is required for storage
transactions.
Lenovo ThinkSystem NE2572 RackSwitch 2

Fault tolerance
The NE2572 RackSwitch offers redundant hot-swap hardware components, learns alternate routes
automatically, and performs faster convergence if there is a link, switch, or power failure.
Seamless interoperability
RackSwitch switches perform seamlessly with other vendors' upstream switches.
Automated VM-aware network provisioning
The Lenovo CNOS Network Policy Agent, a ThinkAgile Network Orchestrator feature, gives
increased visibility of the virtual infrastructure, including VM and virtual network information. It
provides automated VM-aware provisioning by automatically configuring VLANs in the physical
network based on the auto-discovered virtual network topology. The agent also performs ongoing
dynamic updates to the physical network configuration in response to new VMs, updated VMs,
and deleted VMs and virtual networks, eliminating errors with manual configuration.
Note: The Network Policy Agent works with the Nutanix Acropolis Hypervisor (AHV) and Nutanix
Acropolis software version 5.0.2 or higher (excluding 5.1.2).
Pro-active congestion monitoring
Telemetry enables continuous monitoring of networking devices to detect potential congestion
problems, such as packets dropped by the switch when ports are being used close to their line rate
or switch buffers are being temporarily overflown (for example, in case of microbursts).
Zero Touch Provisioning
Zero Touch Provisioning (ZTP) enables a switch to automatically provision itself using the resources
available on the network, without manual intervention. ZTP automatically handles the process of
upgrading the switch software image and installing configuration files.
Python Scripting
Network administrators can create and execute local Python scripts on switches to make small
programs that allow a switch to automatically provision itself, perform fault monitoring, upgrade the
image files, or auto-generate configuration files. Administrators can also implement version control
systems, automatically generate alerts, create custom logging tools, and automate the
management of network devices.
REST API Programming
The Lenovo REpresentational State Transfer (REST) Application Program Interface (API) enables
network administrators to remotely configure and manage a Lenovo switch using REST and
HyperText Transfer Protocol (HTTP). It also allows switch management integration into management
applications, such as Lenovo xClarity.
Lenovo ThinkSystem NE2572 RackSwitch 3

Components and connectors
The following figure shows the front (port-side) panel of the NE2572 RackSwitch.
Figure 2. Front panel of the NE2572 RackSwitch
The front panel of the NE2572 RackSwitch includes the following components:
48x SFP28/SFP+ ports to attach SFP28/SFP+ transceivers, DAC cables, and AOCs for 25 Gb or 10
Gb Ethernet connections.
6x QSFP28/QSFP+ ports to attach QSFP28/QSFP+ transceivers, DAC cables, and AOCs for 100
Gb or 40 Gb Ethernet connections or breakout cables for 4x 25 Gb Ethernet connections out of a
100 GbE port or 4x 10 GbE connections out of a 40 GbE port.
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 Micro-USB Type A port for mass storage devices.
LEDs that display the status of the switch and the network.
Reset button.
Switch information pull-out tab.
The following figure shows the rear (non-port-side) panel of the NE2572 RackSwitch.
Figure 3. Rear panel of the NE2572 RackSwitch
The rear panel of the NE2572 RackSwitch includes the following components:
Two redundant hot-swap 770 W AC power supplies (each with the IEC 320-C14 power connector).
Six N+1 redundant hot-swap fan assemblies.
Lenovo ThinkSystem NE2572 RackSwitch 4

System specifications
The following table lists the NE2572 RackSwitch system specifications.
Note: The supported hardware options and software features listed in this product guide are based on the
Lenovo Cloud Networking Operating System (CNOS) version 10.6.2. For details about specific CNOS
software releases that introduced support for certain hardware options and software features, refer to the
Release Notes for the particular software release that can be found at:
http://datacentersupport.lenovo.com/us/en/products/networking/rackswitch/NE2572/7159/downloads
Table 1. NE2572 RackSwitch system specifications
Component Specification
Form factor 1U rack mount
Ports 48x SFP28/SFP+ ports
6x QSFP28/QSFP+ ports
Media types 10 Gb Ethernet SFP+:
10 GbE short-range (SR) SFP+ transceivers
10 GbE long-range (LR) SFP+ transceivers
10 GbE extended-range (ER) SFP+ transceivers
10 GbE RJ-45 SFP+ transceivers
10 GbE SFP+ active optical cables
10 GbE SFP+ DAC cables
25 Gb Ethernet SFP28:
25 GbE SR SFP+ transceivers
25 GbE SFP+ active optical cables
25 GbE SFP+ DAC cables
40 Gb Ethernet QSFP+:
40 GbE SR QSFP+ bi-directional (BiDi) transceivers
40 GbE short-range (SR4/iSR4/eSR4) QSFP+ transceivers
40 GbE long-range (LR4) QSFP+ transceivers
40 GbE QSFP+ to QSFP+ active optical cables
40 GbE QSFP+ to 4x 10 GbE SFP+ active optical breakout cables
40 GbE QSFP+ to QSFP+ DAC cables
40 GbE QSFP+ to 4x 10 GbE SFP+ DAC breakout cables
100 Gb Ethernet QSFP28:
100 GbE short-range (SR4) QSFP28 transceivers
100 GbE long-range (LR4) QSFP28 transceivers
100 GbE QSFP28 to QSFP28 active optical cables
100 GbE QSFP28 to 4x 25 GbE SFP28 active optical breakout cables
100 GbE QSFP28 to QSFP28 DAC cables
100 GbE QSFP28 to 4x 25 GbE SFP28 DAC breakout cables
Port speeds 10 GbE SFP+ transceivers, DAC cables, and AOCs: 10 Gbps
25 GbE SFP+ transceivers, DAC cables, and AOCs: 25 Gbps
40 GbE QSFP+ SR BiDi/SR4/LR4 transceivers: 40 GbE
40 GbE QSFP+ iSR4/eSR4 transceivers, DAC cables, and AOCs: 40 GbE or 4x 10 GbE
100 GbE QSFP28 SR4 transceivers, DAC cables, and AOCs: 100 GbE or 4x 25 GbE
100 GbE QSFP28 LR4 transceivers: 100 GbE
Note: SFP28/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 SFP28/SFP+
port speed should be the same (10 Gbps or 25 Gbps) across all ports in the 4-port group.
Switching method Cut-through.
Lenovo ThinkSystem NE2572 RackSwitch 5

Data traffic types Unicast, multicast, broadcast.
Software features Lenovo Cloud Networking OS (CNOS):
Layer 2 switching, Layer 3 switching, virtual local area networks (VLANs), VLAN tagging,
spanning tree protocol (STP), link aggregation (trunk) groups (LAGs), virtual LAGs (vLAGs),
Layer 2 failover, quality of service (QoS), IPv4/IPv6 management, IPv4/IPv6 routing, equal cost
multiple paths (ECMP), IPv4/IPv6 virtual router redundancy protocol (VRRP), IPv4/IPv6 policy-
based routing (PBR), Converged Enhanced Ethernet, Network Policy Agent, VXLAN gateway,
Python scripting, REST API programming, Telemetry agent.
Performance Non-blocking architecture with wire-speed forwarding of traffic:
100% line-rate performance
Up to 3.6 Tbps aggregated throughput
As low as 480 ns (QSFP28) or 535 ns (SFP28) port-to-port switching latency
Up to 2,678 Million packets per second (Mpps) (64-byte packets)
Up to 9,216-byte jumbo frames
Buffer size: 22 MB
Scalability MAC address forwarding database entries: 104,000
VLANs: 4,095 (3,999 user-configurable; 96 reserved)
Rapid Per VLAN Spanning Tree (RPVST) instances: 500
Multiple STP (MSTP) instances: 64
Link aggregation groups: 72
Active ports in a link aggregation group: 32
Maximum ingress ACL entries: 3,072
Maximum egress ACL entries: 512
Static routes (IPv4 / IPv6): 256 / 256
Dynamic routes (IPv4 / IPv6): 15,870 / 6,143
Cooling Five N+1 redundant hot-swap fans. Rear (non-port side) to front (port side) or front to rear
airflow.
Power supply Two load-sharing, redundant hot-swap 770 W AC (100 - 240 V) power supplies (each power
supply has an IEC 320-C14 connector).
Hot-swap parts SFP28/SFP+/QSFP28/QSFP+ transceivers, DAC cables, and AOCs; power supplies; fans.
Management
ports
1x 10/100/1000 Mb Ethernet port (RJ-45); 1x RS-232 port (RJ-45); 1x USB 2.0 port (Micro-
USB Type A; for additional firmware, log, and configuration files storage).
Management
interfaces
Industry standard command line interface (isCLI); SNMP v1, V2, and v3; REST API. Optional
Lenovo XClarity for discovery, inventory, monitoring and events. Optional Lenovo Networking
Content Pack for VMware vRealize Log Insight. Optional Lenovo Networking Neutron Plugin
for OpenStack-based environments. Ansible support for IT automation. Ganglia support for
telemetry analytics.
Security features Secure Shell (SSH); Secure Copy (SCP); Secure FTP (sFTP); user level security; Role-based
Access Control (RBAC); LDAP/LDAPS, RADIUS, and TACACS+ authentication; access control
lists (ACLs); secure mode; Trusted Platform Module (TPM) 1.2.
Hardware
warranty
Three-year (Machine Type 7159) customer-replaceable unit and onsite limited warranty with
9x5 next business day terms. Optional warranty service upgrades are available through
Lenovo: onsite service, 24x7 coverage, 2-hour or 4-hour response time, 1-year or 2-year
warranty extensions, basic installation services.
Software
maintenance
Three-year software support and subscription is included in the base warranty. Optional 1-
year and 2-year warranty extensions include software support and subscription.
Mean Time
Between Failures
(MTBF)
242,685 hours.
Dimensions Height: 44 mm (1.7 in.); width: 441 mm (17.3 in.); depth: 487 mm (19.2 in.)
Component Specification
Lenovo ThinkSystem NE2572 RackSwitch 6

Weight 11.4 kg (25.1 lb).
Component Specification
Models
The following table lists the NE2572 RackSwitch models.
Table 2. NE2572 RackSwitch models
Description
Part
number
Machine
Type-Model
Feature
code
Lenovo ThinkSystem NE2572 RackSwitch (Rear to Front) 7159E1X 7159-HE3 AV19
Lenovo ThinkSystem NE2572 RackSwitch (Front to Rear) 7159E2X 7159-HE4 AV1A
The part numbers for the NE2572 RackSwitch models include the following items:
One NE2572 RackSwitch with two power supplies and six fan assemblies (rear-to-front airflow or
front-to-rear airflow)
Generic Rack Mount Kit (2-post)
Cable Kit that includes the following items:
DB-9 (plug) to RJ-45 (plug) serial console cable
Micro-USB Type A (plug) to USB Type A (jack) data cable
Electronic Publications Flyer
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 NE2572 RackSwitch supports Features on Demand (FoD) license keys to enable additional features.
The Advanced Instrumentation Tools FoD option enables access to low-level switch diagnostics for
advanced troubleshooting.
The following table lists the FoD upgrade options for the NE2572 RackSwitch.
Table 3. FoD upgrade options
Description
Part
number
Feature
code
Lenovo ThinkSystem NE2572 RackSwitch Advanced Instrumentation Tools 7ZN7A04598 AXD8
Lenovo ThinkSystem NE2572 RackSwitch 7

Transceivers and cables
With the flexibility of the NE2572 RackSwitch, customers can choose the following connectivity
technologies:
For 10 GbE links, customers can use SFP28 ports with 10 GbE SFP+ direct-attached copper (DAC)
cables for distances up to 7 meters or 10 GbE SFP+ active optical cables (AOCs) for distances up
to 20 meters. The AOCs and DAC cables have SFP+ connectors on each end, and they do not need
separate transceivers. For distances up to 30 meters, the 10GBASE-T SFP+ transceiver can be
used with Category 6a or 7 RJ-45 UTP cables.
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 multimode fiber optic (MMF) cables. The 10GBASE-LR SFP+
transceivers can support distances up to 10 kilometers on single mode fiber optic (SMF) cables. For
extended distances, the 10GBASE-ER SFP+ transceivers can support up to 40 kilometers on SMF
cables.
To increase the number of available 10 GbE ports, customers can split out four 10 GbE ports for
each QSFP28 port by using QSFP+ to 4x SFP+ DAC or active optical breakout cables for distances
up to 5 meters. The 40GBASE-iSR4 QSFP+ transceivers can be used for distances up to 100
meters on OM3 or up to 150 meters on OM4 MMF MPO-to-LC breakout cables. For longer
distances, the 40GBASE-eSR4 transceivers can be used for up to 300 meters on OM3 or up to 400
meters on OM4 MMF MPO-to-LC breakout cables.
For 25 GbE links, customers can use SFP28 ports with 25 GbE SFP28 DAC cables for distances up
to 5 meters or 25 GbE SFP28 active optical cables (AOCs) for distances up to 20 meters. The AOCs
and DAC cables have SFP28 connectors on each end, and they do not need separate
transceivers. 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.
To increase the number of available 25 GbE ports, customers can split out four 25 GbE ports for
each QSFP28 port by using QSFP28 to 4x SFP28 DAC breakout cables for distances up to 5
meters or active optical breakout cables for distances up to 20 meters. For longer distances, the
100GBASE-SR4 QSFP28 transceivers can be used for up to 70 meters on OM3 or up to 100 meters
on OM4 MMF MPO-to-LC breakout cables.
For 40 GbE links, customers can use QSFP28 ports with QSFP+ to QSFP+ DAC cables for
distances up to 7 meters or QSFP+ to QSFP+ active optical cables for distances up to 20
meters. These DAC cables and AOCs have QSFP+ connectors on each end, and they do not need
separate transceivers.
For longer distances, customers can use the 40GBASE QSFP+ bi-directional transceivers or
40GBASE-SR4/iSR4 QSFP+ transceivers for distances up to 100 meters on OM3 or up to 150
meters on OM4 MMF cables. The 40GBASE-eSR4 QSFP+ transceiver can be used for distances up
to 300 meters on OM3 or up to 400 meters on OM4 MMF cables. The 40GBASE-LR4 QSFP+
transceiver can be used for distances up to 10 kilometers on SMF cables.
For 100 GbE links, customers can use QSFP28 ports with QSFP28 DAC cables for distances up to
5 meters or QSFP28 active optical cables for distances up to 20 meters. These DAC cables and
AOCs have QSFP28 connectors on each end, and they do not need separate transceivers.
For longer distances, the 100GBASE-SR4 QSFP28 transceivers support distances up to 70
meters on OM3 or up to 100 meters on OM4 MMF cables. The 100GBASE-LR4 QSFP28 transceiver
can be used for distances up to 10 kilometers on SMF LC cables.
Note: SFP28/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 SFP28/SFP+ port speed should be the same
(10 Gbps or 25 Gbps) across all ports in the 4-port group.
Lenovo ThinkSystem NE2572 RackSwitch 8

The following table lists the supported cables and transceivers.
Table 4. Supported SFP/SFP+ transceivers and DAC cables
Description
Part
number
Feature
code
Maximum
quantity
supported
SFP+ transceivers - 10 GbE
Lenovo Dual Rate 1/10Gb SX/SR SFP+ Transceiver (no 1 Gb support) 00MY034 ATTJ 48
Lenovo 10GBASE-SR SFP+ Transceiver 46C3447 5053 48
Lenovo 10GBASE-LR SFP+ Transceiver 90Y9412 A1PM 48
Lenovo 10GBASE-ER SFP+ Transceiver 90Y9415 A1PP 48
Lenovo 10GBASE-T SFP+ Transceiver 7G17A03130 AVV1 48
OM3 optical cables for 10 GbE SR SFP+, 25 GbE SR SFP28, and 40 GbE SR QSFP+ BiDi transceivers
Lenovo 0.5m LC-LC OM3 MMF Cable 00MN499 ASR5 54
Lenovo 1m LC-LC OM3 MMF Cable 00MN502 ASR6 54
Lenovo 3m LC-LC OM3 MMF Cable 00MN505 ASR7 54
Lenovo 5m LC-LC OM3 MMF Cable 00MN508 ASR8 54
Lenovo 10m LC-LC OM3 MMF Cable 00MN511 ASR9 54
Lenovo 15m LC-LC OM3 MMF Cable 00MN514 ASRA 54
Lenovo 25m LC-LC OM3 MMF Cable 00MN517 ASRB 54
Lenovo 30m LC-LC OM3 MMF Cable 00MN520 ASRC 54
OM4 optical cables for 10 GbE SR SFP+, 25 GbE SR SFP28, and 40 GbE SR QSFP+ BiDi transceivers
Lenovo 0.5m LC-LC OM4 MMF Cable 4Z57A10845 B2P9 54
Lenovo 1m LC-LC OM4 MMF Cable 4Z57A10846 B2PA 54
Lenovo 3m LC-LC OM4 MMF Cable 4Z57A10847 B2PB 54
Lenovo 5m LC-LC OM4 MMF Cable 4Z57A10848 B2PC 54
Lenovo 10m LC-LC OM4 MMF Cable 4Z57A10849 B2PD 54
Lenovo 15m LC-LC OM4 MMF Cable 4Z57A10850 B2PE 54
Lenovo 25m LC-LC OM4 MMF Cable 4Z57A10851 B2PF 54
Lenovo 30m LC-LC OM4 MMF Cable 4Z57A10852 B2PG 54
SFP+ active optical cables - 10 GbE
Lenovo 1m SFP+ to SFP+ Active Optical Cable 00YL634 ATYX 48
Lenovo 3m SFP+ to SFP+ Active Optical Cable 00YL637 ATYY 48
Lenovo 5m SFP+ to SFP+ Active Optical Cable 00YL640 ATYZ 48
Lenovo 7m SFP+ to SFP+ Active Optical Cable 00YL643 ATZ0 48
Lenovo 15m SFP+ to SFP+ Active Optical Cable 00YL646 ATZ1 48
Lenovo 20m SFP+ to SFP+ Active Optical Cable 00YL649 ATZ2 48
SFP+ passive direct-attach copper cables - 10 GbE
Lenovo 0.5m Passive SFP+ DAC Cable 00D6288 A3RG 48
Lenovo 1m Passive SFP+ DAC Cable 90Y9427 A1PH 48
Lenovo 1.5m Passive SFP+ DAC Cable 00AY764 A51N 48
Lenovo 2m Passive SFP+ DAC Cable 00AY765 A51P 48
Lenovo 3m Passive SFP+ DAC Cable 90Y9430 A1PJ 48
Lenovo 5m Passive SFP+ DAC Cable 90Y9433 A1PK 48
Lenovo ThinkSystem NE2572 RackSwitch 9

Lenovo 7m Passive SFP+ DAC Cable 00D6151 A3RH 48
SFP+ active direct-attach copper cables - 10 GbE
Lenovo 1m Active DAC SFP+ Cable 00VX111 AT2R 48
Lenovo 3m Active DAC SFP+ Cable 00VX114 AT2S 48
Lenovo 5m Active DAC SFP+ Cable 00VX117 AT2T 48
SFP28 transceivers - 25 GbE
Lenovo 25GBASE-SR SFP28 Transceiver 7G17A03537 AV1B 48
SFP28 active optical cables - 25 GbE
Lenovo 3m 25G SFP28 Active Optical Cable 7Z57A03541 AV1F 48
Lenovo 5m 25G SFP28 Active Optical Cable 7Z57A03542 AV1G 48
Lenovo 10m 25G SFP28 Active Optical Cable 7Z57A03543 AV1H 48
Lenovo 15m 25G SFP28 Active Optical Cable 7Z57A03544 AV1J 48
Lenovo 20m 25G SFP28 Active Optical Cable 7Z57A03545 AV1K 48
SFP28 passive direct-attach copper cables - 25 GbE
Lenovo 1m Passive 25G SFP28 DAC Cable 7Z57A03557 AV1W 48
Lenovo 3m Passive 25G SFP28 DAC Cable 7Z57A03558 AV1X 48
Lenovo 5m Passive 25G SFP28 DAC Cable 7Z57A03559 AV1Y 48
QSFP+ transceivers - 40 GbE
Lenovo 40GBASE QSFP+ Bi-Directional Transceiver 00YL631 ATYW 6
Lenovo 40GBASE-SR4 QSFP+ Transceiver 49Y7884 A1DR 6
Lenovo 40GBASE-iSR4 QSFP+ Transceiver 00D9865 ASTM 6
Lenovo 40GBASE-eSR4 QSFP+ Transceiver 00FE325 A5U9 6
Lenovo 40GBASE-LR4 QSFP+ Transceiver 00D6222 A3NY 6
Optical cables for 40 GbE QSFP+ SR4/iSR4/eSR4 transceivers
Lenovo 10m QSFP+ MPO-MPO OM3 MMF Cable 00VX003 AT2U 6
Lenovo 30m QSFP+ MPO-MPO OM3 MMF Cable 00VX005 AT2V 6
Optical breakout cables for 40 GbE QSFP+ iSR4/eSR4 transceivers
Lenovo 1m MPO-4xLC OM3 MMF Breakout Cable 00FM412 A5UA 6
Lenovo 3m MPO-4xLC OM3 MMF Breakout Cable 00FM413 A5UB 6
Lenovo 5m MPO-4xLC OM3 MMF Breakout Cable 00FM414 A5UC 6
QSFP+ active optical cables - 40 GbE
Lenovo 3m QSFP+ to QSFP+ Active Optical Cable 00YL652 ATZ3 6
Lenovo 5m QSFP+ to QSFP+ Active Optical Cable 00YL655 ATZ4 6
Lenovo 7m QSFP+ to QSFP+ Active Optical Cable 00YL658 ATZ5 6
Lenovo 15m QSFP+ to QSFP+ Active Optical Cable 00YL661 ATZ6 6
Lenovo 20m QSFP+ to QSFP+ Active Optical Cable 00YL664 ATZ7 6
QSFP+ active optical breakout cables - 40 GbE to 4x10 GbE
Lenovo 1m QSFP+ to 4xSFP+ Active Optical Cable 00YL667 ATZ8 6
Lenovo 3m QSFP+ to 4xSFP+ Active Optical Cable 00YL670 ATZ9 6
Lenovo 5m QSFP+ to 4xSFP+ Active Optical Cable 00YL673 ATZA 6
Description
Part
number
Feature
code
Maximum
quantity
supported
Lenovo ThinkSystem NE2572 RackSwitch 10

QSFP+ passive direct-attach copper cables - 40 GbE
Lenovo 1m Passive QSFP+ DAC Cable 49Y7890 A1DP 6
Lenovo 3m Passive QSFP+ DAC Cable 49Y7891 A1DQ 6
Lenovo 5m Passive QSFP+ DAC Cable 00D5810 A2X8 6
Lenovo 7m Passive QSFP+ DAC Cable 00D5813 A2X9 6
QSFP+ passive copper breakout cables - 40 GbE to 4x 10 GbE
Lenovo 1m Passive QSFP+ to SFP+ Breakout DAC Cable 49Y7886 A1DL 6
Lenovo 3m Passive QSFP+ to SFP+ Breakout DAC Cable 49Y7887 A1DM 6
Lenovo 5m Passive QSFP+ to SFP+ Breakout DAC Cable 49Y7888 A1DN 6
QSFP28 transceivers - 100 GbE
Lenovo 100GBASE-SR4 QSFP28 Transceiver 7G17A03539 AV1D 6
Lenovo 100GBASE-LR4 QSFP28 Transceiver 7G17A03540 AV1E 6
Optical cables for 100 GbE QSFP28 SR4 transceivers
Lenovo 5m MPO-MPO OM4 MMF Cable 7Z57A03567 AV25 6
Lenovo 7m MPO-MPO OM4 MMF Cable 7Z57A03568 AV26 6
Lenovo 10m MPO-MPO OM4 MMF Cable 7Z57A03569 AV27 6
Lenovo 15m MPO-MPO OM4 MMF Cable 7Z57A03570 AV28 6
Lenovo 20m MPO-MPO OM4 MMF Cable 7Z57A03571 AV29 6
Lenovo 30m MPO-MPO OM4 MMF Cable 7Z57A03572 AV2A 6
Optical breakout cables for 100 GbE QSFP28 SR4 transceivers
Lenovo 1m MPO-4xLC Breakout OM4 MMF Cable 7Z57A03573 AV2B 6
Lenovo 3m MPO-4xLC Breakout OM4 MMF Cable 7Z57A03574 AV2C 6
Lenovo 5m MPO-4xLC Breakout OM4 MMF Cable 7Z57A03575 AV2D 6
QSFP28 active optical cables - 100 GbE
Lenovo 1m 100G QSFP28 Active Optical Cable 4Z57A10844 B2UZ 6
Lenovo 3m 100G QSFP28 Active Optical Cable 7Z57A03546 AV1L 6
Lenovo 5m 100G QSFP28 Active Optical Cable 7Z57A03547 AV1M 6
Lenovo 10m 100G QSFP28 Active Optical Cable 7Z57A03548 AV1N 6
Lenovo 15m 100G QSFP28 Active Optical Cable 7Z57A03549 AV1P 6
Lenovo 20m 100G QSFP28 Active Optical Cable 7Z57A03550 AV1Q 6
QSFP28 active optical breakout cables - 100 GbE to 4x 25 GbE
Lenovo 3m 100G to 4x25G Breakout Active Optical Cable 7Z57A03551 AV1R 6
Lenovo 5m 100G to 4x25G Breakout Active Optical Cable 7Z57A03552 AV1S 6
Lenovo 10m 100G to 4x25G Breakout Active Optical Cable 7Z57A03553 AV1T 6
Lenovo 15m 100G to 4x25G Breakout Active Optical Cable 7Z57A03554 AV1U 6
Lenovo 20m 100G to 4x25G Breakout Active Optical Cable 7Z57A03555 AV1V 6
QSFP28 direct attach copper cables - 100 GbE
Lenovo 1m Passive 100G QSFP28 DAC Cable 7Z57A03561 AV1Z 6
Lenovo 3m Passive 100G QSFP28 DAC Cable 7Z57A03562 AV20 6
Lenovo 5m Passive 100G QSFP28 DAC Cable 7Z57A03563 AV21 6
Description
Part
number
Feature
code
Maximum
quantity
supported
Lenovo ThinkSystem NE2572 RackSwitch 11

QSFP28 direct attach copper breakout cables - 100 GbE
Lenovo 1m 100G QSFP28 to 4x25G SFP28 Breakout DAC Cable 7Z57A03564 AV22 6
Lenovo 3m 100G QSFP28 to 4x25G SFP28 Breakout DAC Cable 7Z57A03565 AV23 6
Lenovo 5m 100G QSFP28 to 4x25G SFP28 Breakout DAC Cable 7Z57A03566 AV24 6
Description
Part
number
Feature
code
Maximum
quantity
supported
The network cables that can be used with the switch are listed in the following table.
Table 5. NE2572 RackSwitch network cabling requirements
Transceiver Standard Cable Connector
10 Gb Ethernet
10Gb SR SFP+
(46C3447)
1/10Gb SFP+
(00MY034)
10GBASE-SR Up to 30 m with fiber optic cables supplied by Lenovo
(see Table 4); up to 300 m with OM3 or up to 400 m with
OM4 multimode fiber optic cables
LC
10Gb LR SFP+
(90Y9412)
10GBASE-LR 1310 nm single-mode fiber optic cable up to 10 km LC
10Gb ER SFP+
(90Y9415)
10GBASE-ER 1310 nm single-mode fiber optic cable up to 40 km LC
10Gb RJ-45 SFP+
(7G17A03130)
10GBASE-T UTP Category 6a or 7 up to 30 meters RJ-45
Active optical cable 10GBASE-SR SFP+ active optical cables up to 20 m (see Table 4) SFP+
Direct attach copper
cable
10GSFP+Cu SFP+ DAC cables up to 7 m (see Table 4) SFP+
25 Gb Ethernet
25Gb SR SFP28
(7G17A03537)
25GBASE-SR Up to 30 m with fiber optic cables supplied by Lenovo
(see Table 4); up to 70 m with OM3 or up to 100 m with
OM4 multimode fiber optic cables
LC
Active optical cable 25GBASE-SR SFP28 active optical cables up to 20 m (see Table 4) SFP28
Direct attach copper
cable
25GBASE-CR SFP28 DAC cables up to 5 m (see Table 4) SFP28
40 Gb Ethernet
40Gb SR QSFP+ BiDi
(00YL631)
40GBASE-SR
BiDi
Up to 30 m with fiber optic cables supplied by Lenovo
(see Table 4); up to 100 m with OM3 or up to 150 m with
OM4 multimode fiber optic cables
LC
40Gb SR4 QSFP+
(49Y7884)
40GBASE-SR4 Up to 30 m with MPO-MPO fiber optic cables supplied by
Lenovo (see Table 4); support for up to 100 m with OM3
or up to 150 m with OM4 multimode fiber optic cables
MPO
40Gb iSR4 QSFP+
(00D9865)
40GBASE-SR4 Up to 30 m with MPO-MPO fiber optic cables or up to 5
m with MPO-4xLC breakout cables supplied by Lenovo
(see Table 4); support for up to 100 m with OM3 or up to
150 m with OM4 multimode fiber optic cables
MPO
40Gb eSR4 QSFP+
(00FE325)
40GBASE-SR4 Up to 30 m with MPO-MPO fiber optic cables or up to
5m with MPO-4xLC breakout cables supplied by Lenovo
(see Table 4); support for up to 300 m with OM3 or up to
400 m with OM4 multimode fiber optic cables
MPO
Lenovo ThinkSystem NE2572 RackSwitch 12

40Gb LR4 QSFP+
(00D6222)
40GBASE-LR4 1310 nm single-mode fiber optic cable up to 10 km LC
Active optical cable 40GBASE-SR4 QSFP+ to QSFP+ active optical cables up to 20 m;
QSFP+ to 4x SFP+ active optical break-out cables up to
5 m for 4x 10 GbE SFP+ connections out of a 40 GbE
port (see Table 4)
QSFP+
Direct attach copper
cable
40GBASE-CR4 QSFP+ to QSFP+ DAC cables up to 7 m; QSFP+ to
4x SFP+ DAC break-out cables up to 5 m for 4x 10 GbE
SFP+ connections out of a 40 GbE port (see Table 4)
QSFP+
100 Gb Ethernet
100Gb SR4 QSFP28
(7G17A03539)
100GBASE-SR4 Up to 30 m with MPO-MPO fiber optic cables or up to 5
m with MPO-4xLC breakout cables supplied by Lenovo
(see Table 4); up to 70 m with OM3 or up to 100 m with
OM4 multimode fiber optic cables
MPO
100Gb LR4 QSFP28
(7G17A03540)
100GBASE-LR4 1310 nm single-mode fiber optic cable up to 10 km LC
Active optical cable 100GBASE-SR4 QSFP28 to QSFP28 active optical cables up to 20 m;
QSFP28 to 4x SFP28 active optical breakout cables up to
20 m for 4x 25 GbE connections out of a 100 GbE port
(see Table 4)
QSFP28
Direct attach copper
cable
100GBASE-CR4 QSFP28 to QSFP28 DAC cables up to 5 m; QSFP28 to 4x
SFP28 DAC breakout cables up to 5 m for 4x 25 GbE
connections out of a 100 GbE port (see Table 4)
QSFP28
Management ports
1 GbE port 1000BASE-T UTP Category 5, 5E, and 6 up to 100 meters RJ-45
RJ-45 serial port RS-232 DB-9 to RJ-45 cable (comes with the switch) RJ-45
Micro-USB port USB 2.0 Micro-USB (Type A) to USB (Type A) cable (comes with
the switch)
Micro-USB
(Type A)
Transceiver Standard Cable Connector
Lenovo ThinkSystem NE2572 RackSwitch 13

Software features
The NE2572 RackSwitch with Cloud NOS has the following software features and specifications:
Scalability and performance:
Media access control (MAC) address learning with automatic updates
Static and LACP (IEEE 802.3ad) link aggregation
Broadcast and multicast storm control
IGMP snooping to limit flooding of IP multicast traffic
IGMP filtering to control multicast traffic for hosts participating in multicast groups
Configurable traffic distribution schemes over trunk links based on source or destination IP or
MAC addresses, or both
Fast port forwarding and fast uplink convergence for rapid STP convergence
Availability and redundancy:
IEEE 802.1D STP for providing L2 redundancy
IEEE 802.1s Multiple STP (MSTP) for topology optimization
IEEE 802.1w Rapid STP (RSTP) provides rapid STP convergence for critical delay-sensitive
traffic, such as voice or video
Per-VLAN Rapid STP (PVRST) enhancements
Layer 2 Failover to support active/standby configurations of NIC teaming on servers
VLAN support:
Up to 4095 VLANs:
VLAN 1 is the default VLAN
VLAN numbers 2 - 3999 are user-configurable
VLAN numbers 4000 - 4095 are reserved for the use by the switch
Port-based VLANs
802.1Q VLAN tagging support
Ingress VLAN tagging support to tunnel packets through a public domain without altering the
original 802.1Q tagging information
Security:
VLAN-based, MAC-based, and IP-based access control lists (ACLs)
Multiple user IDs and passwords
User access control
Radius, TACACS+, and LDAP/LDAPS authentication and authorization
Secure mode: Only secure communication protocols are allowed to be enabled
Quality of Service (QoS):
Support for IEEE 802.1p, IP ToS/DSCP, and ACL-based (MAC/IP source and destination
addresses and VLANs) traffic classification and processing
Traffic shaping and re-marking that is based on defined policies
Eight output Class of Service (COS) queues per port for processing qualified traffic
Weighted Random Early Detection (WRED) to avoid congestion
Control Plane Protection (CoPP)
IPv4 ACL metering
IP v4 Layer 3 functions:
Host management
IP forwarding
IP filtering with ACLs
Virtual Router Redundancy Protocol (VRRP) for router redundancy
Static routes
Equal Cost Multiple Paths (ECMP)
Routing protocols (OSPF v2 and BGP)
Policy-based routing (PBR)
DHCP Relay and DHCP Snooping
IGMP snooping
DNS client
Lenovo ThinkSystem NE2572 RackSwitch 14

IPv6 Layer 3 functions:
IPv6 host management
IPv6 forwarding
Virtual Router Redundancy Protocol (VRRP) for router redundancy
Static routes
Equal Cost Multiple Paths (ECMP)
Routing protocols (BGP)
Policy-based routing (PBR)
DHCP Relay
DNS client
Virtualization:
Virtual link aggregation groups (vLAGs)
Two switches (vLAG peers) act as a single virtual entity for a multi-port aggregation
vLAG Peer Gateway for improved usage of the link between the vLAG peers
Two-tier vLAGs with VRRP enables active/active VRRP to reduce routing latency
Network Policy Agent gives increased visibility of the virtual infrastructure and automates
VM-aware network provisioning and configuration updates for VLANs, virtual NICs, virtual
networks, ACLs, and QoS based on the VM associations in a hyperconverged Nutanix
environment (requires the AHV and software version 5.0.2 or higher [excluding 5.1.2]).
VXLAN Gateway enables the communication between physical and virtual devices using the
VXLAN protocol for VMware NSX integration.
Converged Enhanced Ethernet:
Priority-Based Flow Control (PFC) (IEEE 802.1Qbb) extends 802.3x flow control to allow the
switch to pause traffic that is based on the 802.1p priority value in each packet’s VLAN tag.
Enhanced Transmission Selection (ETS) (IEEE 802.1Qaz) provides a method for allocating link
bandwidth that is based on the 802.1p priority value in each packet’s VLAN tag.
Data Center Bridging Capability Exchange Protocol (DCBX) (IEEE 802.1AB) allows
neighboring network devices to exchange information about their capabilities.
Monitoring:
Switch LEDs for port status and switch status indication
Port mirroring for analyzing network traffic passing through switch
Change tracking and remote logging with syslog feature
Telemetry agent for real-time analytics: Buffer statistics and congestion drop counters
sFLOW agent for monitoring traffic in data networks (separate sFLOW analyzer required
elsewhere)
Lenovo ThinkSystem NE2572 RackSwitch 15

Manageability:
Industry-standard command line interface (isCLI)
Simple Network Management Protocol (SNMP V1, V2, and V3)
Telnet interface for CLI
Secure Shell (SSH) v1 and v2 for CLI
Secure Copy (SCP) for uploading and downloading the configuration file via secure channels
Service Location Protocol (SLP)
Link Layer Discovery Protocol (LLDP) for discovering network devices
Serial interface for CLI
Scriptable CLI
Dual software images
Firmware image update via TFTP, FTP, Secure FTP (sFTP), or USB storage
Network Time Protocol (NTP) for switch clock synchronization
Lenovo XClarity (optional; sold separately) for discovery, inventory, monitoring and events
Third-party tools integration
Lenovo Networking Content Pack for VMware vRealize Log Insight (optional
download) for automated log management
Integration with Nutanix Prism management via Network Policy Agent
Lenovo Networking Neutron Plugin to automate VLAN provisioning and configuration
updates for OpenStack-based cloud environments
Integration with Ansible management
Ganglia plug-in for telemetry data analytics
Ethernet standards
The NE2572 RackSwitch supports the following Ethernet standards:
IEEE 802.1AB Data Center Bridging Capability Exchange Protocol (DCBX)
IEEE 802.1D Spanning Tree Protocol (STP)
IEEE 802.1p Class of Service (CoS) prioritization
IEEE 802.1s Multiple STP (MSTP)
IEEE 802.1Q Tagged VLAN (frame tagging on all ports when VLANs are enabled)
IEEE 802.1Qbb Priority-Based Flow Control (PFC)
IEEE 802.1Qaz Enhanced Transmission Selection (ETS)
IEEE 802.1w Rapid STP (RSTP)
IEEE 802.3 10BASE-T Ethernet (Ethernet management port only)
IEEE 802.3ab 1000BASE-T copper twisted pair Gigabit Ethernet (Ethernet management port only)
IEEE 802.3ad Link Aggregation Control Protocol
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 802.3ae 10GBASE-ER extended range fiber optics 10 Gb Ethernet
IEEE 802.3an 10GBASE-T copper twisted pair 10 Gb Ethernet
IEEE 802.3ba 40GBASE-SR4 short range fiber optics 40 Gb Ethernet
IEEE 802.3ba 40GBASE-CR4 copper 40 Gb Ethernet
IEEE 802.3ba 100GBASE-LR4 long range fiber optics 100 Gb Ethernet
IEEE 802.3bj 100GBASE-CR4 copper 100 Gb Ethernet
IEEE 802.3bm 100GBASE-SR4 short range fiber optics 100 Gb Ethernet
IEEE 802.3by 25GBASE-SR short range fiber optics 25 Gb Ethernet
IEEE 802.3by 25GBASE-CR copper 25 Gb Ethernet
IEEE 802.3u 100BASE-TX Fast Ethernet (Ethernet management port only)
IEEE 802.3x Full-duplex Flow Control
SFF-8431 10 Gb SFP+ Direct attach copper cable
Cooling
Lenovo ThinkSystem NE2572 RackSwitch 16

Cooling
The NE2572 RackSwitch ships with six variable speed, hot-swap fan assemblies that provide N+1 cooling
redundancy.
Power supplies and cables
The NE2572 RackSwitch supports up to two load-sharing, redundant hot-swap 770 W AC power supplies
(two power supplies come standard with the switch).
The NE2572 RackSwitch ships without any power cables. The part numbers and feature codes to order the
power cables (two power cables are required per switch) are listed in the following table.
Table 6. AC power cable options
Description
Part
number
Feature
code
Rack power cables
1.5m, 10A/100-250V, C13 to IEC 320-C14 Rack Power Cable 39Y7937 6201
1.8m, 10A/100-250V, 2xC13PM to IEC 320-C14 Rack Power Cable None* 6568
2.8m, 10A/100-250V, C13 to IEC 320-C14 Rack Power Cable None* 6311
2.8m, 10A/100-250V, C13 to IEC 320-C20 Rack Power Cable 39Y7938 6204
4.3m, 10A/100-250V, C13 to IEC 320-C14 Rack Power Cable 39Y7932 6263
Country-specific line cords
Argentina 10A/250V C13 to IRAM 2073 2.8m line cord 39Y7930 6222
Australia/NZ 10A/250V C13 to AS/NZ 3112 2.8m line cord 39Y7924 6211
Brazil 10A/125V C13 to NBR 6147 2.8m line cord 39Y7929 6223
China 10A/250V C13 to GB 2099.1 2.8m line cord 39Y7928 6210
Denmark 10A/250V C13 to DK2-5a 2.8m line cord 39Y7918 6213
European 10A/230V C13 to CEE7-VII 2.8m line cord 39Y7917 6212
India 10A/250V C13 to IS 6538 2.8m line cord 39Y7927 6269
Israel 10A/250V C13 to SI 32 2.8m line cord 39Y7920 6218
Italy 10A/250V C13 to CEI 23-16 2.8m line cord 39Y7921 6217
Japan 12A/125V C13 to JIS C-8303 2.8m line cord 46M2593 A1RE
Korea 12A/250V C13 to KETI 2.8m line cord 39Y7925 6219
South Africa 10A/250V C13 to SABS 164 2.8m line cord 39Y7922 6214
Switzerland 10A/250V C13 to SEV 1011-S24507 2.8m line cord 39Y7919 6216
Taiwan 10A/250V C13 to CNS 10917-3 2.8m line cord 00CG265 A53E
Taiwan 15A/125V C13 to CNS 10917-3 2.8m line cord 00CG267 A53F
United Kingdom 10A/250V C13 to BS 1363/A 2.8m line cord 39Y7923 6215
United States 10A/125V C13 to NEMA 5-15P 4.3m line cord 39Y7931 6207
United States 10A/250V C13 to NEMA 6-15P 2.8m line cord 46M2592 A1RF
* Available for factory-built custom configurations and solutions only.
Rack installation
Lenovo ThinkSystem NE2572 RackSwitch 17

Rack installation
The NE2572 RackSwitch ships with the 2-post rack mount kit.
For 4-post rack installations, the NE2572 RackSwitch supports the optional adjustable 19-inch, 4-post rail
kit and the air inlet duct (optional for the 4-post rail kit; supported only with the models with rear to front
airflow).
When the NE2572 RackSwitch (front to rear airflow) is installed in the Intelligent Cluster Rack (Machine
Type 1410) or Enterprise Rack (Machine Type 9363) as a part of a NeXtScale System solution, the
recessed 19-inch 4-post rail kit is required.
The following table lists rack installation options for the NE2572 RackSwitch switches with rear to front
and front to rear airflow.
Table 7. Rack installation options
Description
Part
number
Feature
code
Rear to front airflow (7159-HE3)
Lenovo RackSwitch Adjustable 19" 4 Post Rail Kit 00D6185 A3KP
Air Inlet Duct for 487 mm RackSwitch 00FM507 ASTN
Front to rear airflow (7159-HE4)
Lenovo RackSwitch Adjustable 19" 4 Post Rail Kit 00D6185 A3KP
Lenovo RackSwitch Recessed 19" 4 Post Rail Kit 00CG089 A51M
Physical specifications
The NE2572 RackSwitch has the following physical specifications:
Height: 44 mm (1.7 in.)
Width: 441 mm (17.3 in.)
Depth: 487 mm (19.2 in.)
Maximum weight: 11.4 kg (25.1 lb)
Operating environment
The NE2572 RackSwitch is supported in the following operating environment:
Temperature: 0 - 40 ºC (32 - 104 ºF).
Relative humidity: 10 - 90% (Non-condensing)
Altitude: Up to 2,000 m (6,561 feet)
Airflow: Front-to-rear or rear-to-front cooling with variable speed fans for reduced power draw
Electrical input: 50 / 60 Hz, 100 - 240 V AC auto-switching
Power consumption
Typical: 213 W
Maximum: 289 W
Heat dissipation
Typical: 727 BTU/hour
Maximum: 986 BTU/hour
Lenovo ThinkSystem NE2572 RackSwitch 18

Warranty and maintenance
The NE2572 RackSwitch comes with a 3-year Customer Replaceable Unit (CRU) hardware limited
warranty with 9x5 Next Business Day (NBD) parts delivered and includes a 3-year software license, which
provides entitlement to software upgrades over that period. The options that are installed in the switch
assume the switch’s base warranty and any Lenovo warranty service upgrade for the switch. Lenovo also
allows one no-charge support call within 90 days of purchase to get assistance and help resolve problems
with the configuration of recently purchased Lenovo network switches.
Some countries might have different warranty terms and conditions than the standard warranty. This is due
to local business practices or laws in the specific country. Local service teams can assist in explaining
country-specific terms when needed. Examples of country-specific warranty terms are second or longer
business day parts delivery or parts-only base warranty.
If warranty terms and conditions include onsite labor for repair or replacement of parts, Lenovo will
dispatch a service technician to the customer site to perform the replacement. Onsite labor under base
warranty is limited to labor for replacement of parts that have been determined to be field-replaceable units
(FRUs). Parts that are determined to be customer-replaceable units (CRUs) do not include onsite labor
under base warranty.
If warranty terms include parts-only base warranty, Lenovo is responsible for delivering only replacement
parts that are under base warranty (including FRUs) that 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 spares parts.
Also available are Lenovo Services warranty maintenance upgrades and post-warranty maintenance
agreements, with a well-defined scope of services, including service hours, response time, term of service,
and service agreement terms and conditions.
Lenovo warranty service upgrade offerings are country-specific. Not all warranty service upgrades are
available in every country. For information about Lenovo warranty service upgrade offerings that are
available in your country or area, refer to the following resources:
Service part numbers in Lenovo Enterprise Solutions Configurator (LESC):
http://lesc.lenovo.com/ss
Lenovo Services Availability Locator
https://lenovolocator.com/
Lenovo ThinkSystem NE2572 RackSwitch 19

In general, the following Lenovo warranty service upgrades are available:
Warranty and maintenance service upgrades:
3, 4, or 5 years of warranty service coverage
1-year or 2-year post-warranty extensions
Foundation Service: 9x5 service coverage with next business day onsite response
Essential Service: 24x7 service coverage with 4-hour onsite response or 24-hour committed
repair (available only in select countries)
Advanced Service: 24x7 service coverage with 2-hour onsite response or 6-hour committed
repair (available only in select countries)
Basic Hardware Installation Services
Lenovo experts can seamlessly manage the physical installation of your server, storage, or
networking hardware. Working at a time convenient for you (business hours or off shift), the
technician will unpack and inspect the systems on your site, install options, mount in a rack
cabinet, connect to power and network, check and update firmware to the latest levels, verify
operation, and dispose of the packaging, allowing your team to focus on other priorities.
For service definitions, country-specific details, and service limitations, please refer to the following
documents:
Lenovo Statement of Limited Warranty for Data Center Group (DCG) Servers and System Storage
http://pcsupport.lenovo.com/us/en/solutions/ht503310
Lenovo Data Center Services Agreement
http://support.lenovo.com/us/en/solutions/ht116628
Regulatory compliance
The NE2572 RackSwitch conforms to the following regulations:
Argentina IEC60950-1
AS/NZS CISPR 22, Class A
Canada ICES-003, Issue 4, Class A
CE Mark (EN55022 Class A, EN60950-1, EN55024, EN61000-3-2, and EN61000-3-3)
China CCC GB4943, GB9254 Class A, GB17625.1
CISPR 22, Class A
CSA C22.2 No. 60950-1
FCC: Verified to comply with Part 15 of the FCC Rules, Class A
IEC 60950-1 (CB Certificate and CB Test Report)
Japan VCCI, Class A
Korea KN22, Class A; KN24
NOM-019
Russia/GOST ME01, IEC-60950-1, GOST R 51318.22, 51318.24, 51317.3.2, and 51317.3.3
Taiwan BSMI CNS13438, Class A; CNS14336-1
TUV-GS (EN60950-1/IEC60950-1, EK1-ITB2000)
UL/IEC 60950-1
Reduction of Hazardous Substances (ROHS)
Lenovo ThinkSystem NE2572 RackSwitch 20