Lenovo RackSwitch G8272 User manual

Lenovo RackSwitch G8272
Product Guide
The Lenovo RackSwitch™ G8272 that uses 10 Gb SFP+ and 40 Gb QSFP+ Ethernet technology is
specifically designed for the data center. It is ideal for today's big data, cloud, and optimized 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 features) help provide high availability for business sensitive traffic.
The RackSwitch G8272 is ideal for latency sensitive applications, such as high-performance computing
clusters and financial applications. In addition to the 10 Gb Ethernet (GbE) and 40 GbE connections, the
G8272 can use 1 GbE connections.
The RackSwitch G8272 is shown in the following figure.
Figure 1. Lenovo RackSwitch G8272
Did you know?
With exceptional port density and flexibility with break-out cables, the RackSwitch G8272 can support up
to 72x 10 Gb Ethernet connections in a 1U rack form factor.
The RackSwitch G8272 offers a choice of the Networking Operating Systems (NOS):
The Cloud NOS 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.
The Enterprise NOS is a data center-class NOS progressively developed over the past decade to
deliver highly reliable, high-performance Ethernet and converged switching and interoperability with
existing network infrastructures. ENOS has a feature-rich design with virtualization, high availability,
and enterprise class Layer 2 and Layer 3 functionality. ENOS supports OpenFlow which helps easily
create software defined virtual networks (SDN) and enables a remote controller to modify the
behavior of network devices.
The RackSwitch G8272 supports the Open Network Install Environment (ONIE) which is a small Linux-
based operating system that provides an open install environment for networking devices without
operating systems.
Lenovo RackSwitch G8272 1

Key features
The RackSwitch G8272 is considered particularly suited for the following environments:
10 GbE server connectivity with 40 GbE upstream aggregation
Virtualized environments with VM-aware networking
Converged SAN and LAN network via NAS, iSCSI, or FCoE
Reduced I/O cost (CAPEX) with fewer adapters, cables, and transceivers to purchase
Reduced complexity (OPEX) with fewer components to manage and lower energy cost
Applications demanding better performance and lower latency
Investment protection with 40 Gb Ethernet, Cloud, and SDN
The RackSwitch G8272 offers the following features and benefits:
High performance
The 10 Gb/40 Gb switch provides the best combination of low latency, non-blocking line-rate
switching, and ease of management. It has a throughput of 1.44 Tbps.
Lower power and better cooling
The RackSwitch G8272 uses as little as 123 W of power, which is less than comparable switches
use. The front-to-rear or rear-to-front cooling design of the RackSwitch G8272 reduces data center
air conditioning costs by having airflow match the servers in the rack. In addition, variable speed
fans help to automatically reduce power consumption.
Layer 3 functionality
The RackSwitch G8272 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.
Converged fabric
The RackSwitch G8272 switch 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, clients 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.
Seamless interoperability
RackSwitch switches perform seamlessly with other vendors' upstream switches.
Fault tolerance
The RackSwitch G8272 offers redundant hot-swap hardware components, learns alternate routes
automatically, and performs faster convergence if there is a link, switch, or power failure.
Open Network Install Environment (ONIE) (Requires an optional license key)
The ONIE is a small Linux-based operating system that provides an open install environment for
networking devices without operating systems. ONIE enables a network switch ecosystem for end
users to choose among different Network Operating Systems by discovering NOS installer images
and loading them onto the switch.
Lenovo RackSwitch G8272 2

The RackSwitch G8272 supports the following networking operating systems:
Lenovo Cloud Networking Operating System (CNOS)
The new Cloud NOS 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.
Lenovo Enterprise Networking Operating System (ENOS)
The Lenovo ENOS is a data center-class network operating system progressively developed over
the past decade to deliver highly reliable, high-performance Ethernet and converged switching and
interoperability with existing network infrastructures.
ENOS has a feature-rich design with virtualization, UFP, high availability, and enterprise class Layer
2 and Layer 3 functionality. ENOS supports OpenFlow which helps easily create software defined
virtual networks (SDN) and enables a remote controller to modify the behavior of network devices.
ENOS can help you consolidate server and storage networks into a single fabric. Converged
Enhanced Ethernet delivers value for your iSCSI, NAS and FCoE enterprise storage environments.
The RackSwitch G8272 with Cloud NOS offers the following additional features:
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 software version 5.0.2 or higher.
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
You 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. You can 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 you
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 RackSwitch G8272 3

The RackSwitch G8272 with Enterprise NOS offers the following additional features:
Virtual Fabric
The RackSwitch G8272 can help customers address I/O requirements for multiple NICs while
reducing cost and complexity. By using Unified Fabric Port, you can carve a physical NIC into
multiple virtual ports (2 - 8 vPorts) and create a virtual pipe between the adapter and the switch for
improved performance, availability, and security.
Transparent networking capability
With a simple configuration change to Easy Connect Mode, the RackSwitch G8272 becomes a
transparent network device that is invisible to the core and eliminates network administration
concerns of Spanning Tree Protocol configuration and interoperability and VLAN assignments and
avoids any possible loops. By emulating a host NIC to the data center core, it accelerates the
provisioning of VMs by eliminating the need to configure the typical access switch parameters.
OpenFlow enabled
The RackSwitch G8272 offers benefits of OpenFlow. OpenFlow is the open API that enables the
network administrator to easily configure and manage virtual networks that control traffic on a “per-
flow” basis. It creates multiple independent virtual networks and related policies without dealing
with the complexities of the underlying physical network and protocols. The RackSwitch G8272 is
also the ideal switch to use with industry compliant OpenFlow controllers.
The following table compares high level features of the CNOS and ENOS.
Table 1. CNOS and ENOS high level feature comparison
Feature CNOS ENOS
Layer 2 switching Yes Yes
Layer 3 switching Yes Yes
EasyConnect mode No Yes
IP routing Yes Yes
Comprehensive IP v6 support Yes No*
Unified Fabric Port No Yes
Converged Enhanced Ethernet Yes Yes
FCoE No Yes
OpenFlow SDN No Yes
Automated VM-aware network provisioning** Yes No
Real-time congestion monitoring with telemetry Yes No
Zero touch provisioning Yes No
REST API programming Yes No
Python scripting Yes Yes
* Not all ENOS features support IP v6 addressing, including DHCP, BGP, VRRP, and TACACS+/RADIUS/LDAP.
** Supported with the Nutanix software version 5.0.2 or higher; requires an AHV hypervisor.
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Components and connectors
The following figure shows the front panel of the RackSwitch G8272.
Figure 2. Front panel of the RackSwitch G8272
The front panel of the RackSwitch G8272 includes the following components:
LEDs that display the status of the switch and the network.
One Mini-USB RS-232 console port that provides another means to configure the switch.
One USB port for mass storage devices.
48x SFP/SFP+ ports to attach SFP/SFP+ transceivers for 1 Gb or 10 Gb Ethernet connections or
DAC cables for 10 Gb Ethernet connections.
6x QSFP+ ports to attach QSFP+ transceivers or DAC cables for 40 Gb or 4x 10 Gb Ethernet
connections.
One RJ-45 10/100/1000 Mb Ethernet port for out-of-band management.
The following figure shows the rear panel of the RackSwitch G8272.
Figure 3. Rear panel of the RackSwitch G8272
The rear panel of the RackSwitch G8272 includes the following components:
Two redundant hot-swap AC power supplies (IEC 320-C14 power connector)
Four 3+1 redundant hot-swap fan assemblies
Lenovo RackSwitch G8272 5

System specifications
The following table lists the RackSwitch G8272 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 10.4.2 or Lenovo Enterprise Networking
Operating System (ENOS) version 8.4.4. For details about specific software releases that introduced
support for certain hardware options and software features, refer to the Change history of the particular
software release that can be found at:
http://datacentersupport.lenovo.com/us/en/products/networking/rackswitch/switch-
G8272/7159/downloads
Table 2. System specifications
Component Specification
Form factor 1U rack mount
Ports 48x SFP/SFP+ ports
6x QSFP+ ports
Media types 40 Gb Ethernet QSFP+:
40 GbE short-range (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 (AOCs)
40 GbE QSFP+ to 4x 10 GbE SFP+ active optical breakout cables
40 GbE QSFP+ to QSFP+ direct attach copper (DAC) cables
40 GbE QSFP+ to 4x 10 GbE SFP+ DAC breakout cables
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
1/10 Gb Ethernet SFP+:
1/10 GbE SX/SR SFP+ transceivers
1 Gb Ethernet SFP:
1 GbE short-wavelength (SX) SFP transceivers
1 GbE long-wavelength (LX) SFP transceivers
1 GbE RJ-45 SFP transceivers
Port speeds 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
10 GbE SFP+ transceivers, DAC cables and AOCs: 10 Gbps
1/10 GbE SFP+ transceivers: 1 Gbps or 10 Gbps
1 GbE SFP transceivers: 1 Gbps
Switching
method
Cut-through.
Data traffic
types
Unicast, multicast, broadcast.
Lenovo RackSwitch G8272 6

Software
features
Lenovo Enterprise Networking OS (ENOS):
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), Hot Links, Layer 2 failover, quality of service (QoS), Edge Virtual Bridging (EVB),
VMready, OpenFlow, IPv4/IPv6 management, IPv4/IPv6 routing, IPv4 virtual router
redundancy protocol (VRRP), IPv4 policy-based routing (PBR), Unified Fabric Port
(UFP), Converged Enhanced Ethernet, Fibre Channel over Ethernet (FCoE) transit switch
operations, VXLAN gateway.
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), quality of service (QoS), IPv4/IPv6 management, IPv4/IPv6 routing, IPv4/IPv6
virtual router redundancy protocol (VRRP), IPv4/IPv6 policy-based routing (PBR),
Converged Enhanced Ethernet, Network Policy Agent, Python scripting, REST API
programming.
Performance Non-blocking architecture with wire-speed forwarding of traffic:
100% line-rate performance
Up to 1.44 Tbps aggregated throughput
As low as 600 nanoseconds switching latency
Up to 9,216-byte jumbo frames
Receive buffer size: 12.2 MB
Scalability MAC address forwarding database entries: 224,000
VLANs: 4,095 (3,999 user-configurable; 96 reserved)
Per VLAN Rapid Spanning Tree (PVRST) instances: 256 (ENOS) / 500 (CNOS)
Multiple STP (MSTP) instances: 32 (ENOS) / 64 (CNOS)
Link aggregation groups: 72
Active ports in a link aggregation group: 32
Cooling Four 3+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 460 W AC (100 - 240 V) power supplies (1x IEC 320-
C14 connector on each power supply).
Hot-swap parts SFP/SFP+/QSFP+ transceivers, SFP+/QSFP+ DAC cables, power supplies, fans.
Management
ports
1x 10/100/1000 Mb Ethernet port (RJ-45); 1x RS-232 port (Mini-USB); 1x USB port (for
additional firmware, log, and configuration files storage).
Management
interfaces
Industry standard command line interface (isCLI); SNMP v1, V2, and v3; Netconf (XML) (ENOS
only); REST API (CNOS only). Optional Lenovo Switch Center (ENOS only). Optional Lenovo
XClarity for discovery, inventory, monitoring and events. Optional Lenovo Networking Content
Pack for VMware vRealize Log Insight.
Security
features
Secure Shell (SSH); Secure Copy (SCP); Secure FTP (sFTP); user level security; Role-based
Access Control (RBAC); LDAP/LDAPS (ENOS only), RADIUS, and TACACS+ authentication;
access control lists (ACLs); port-based network access control (IEEE 802.1x; ENOS only).
Hardware
warranty
Three-year customer-replaceable unit and onsite limited warranty with 9x5 next business day
terms. Optional warranty service upgrades are available through Lenovo: 24x7 coverage, 2-hour
or 4-hour response time, 1-year or 2-year warranty extensions, 1-year or 3-year Remote
Technical Support (RTS).
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
290,023 hours with ambient operating temperature of 40° C.
Component Specification
Lenovo RackSwitch G8272 7

Dimensions Height: 44 mm (1.7 in.); width: 439 mm (17.3 in.); depth: 487 mm (19.2 in.)
Weight 9.1 kg (20.0 lb).
Component Specification
Models
The following table lists the G8272 switch models.
Table 3. G8272 switch models
Description
Part
number
Machine
Type-Model
Feature
code
Lenovo RackSwitch G8272 (Rear to Front) 7159CRW 7159-HCW ASRD
Lenovo RackSwitch G8272 (Front to Rear) 7159CFV 7159-HCV ASRE
The part numbers for the G8272 switches include the following items:
One Lenovo RackSwitch G8272 with two power supplies and four fan assemblies (rear-to-front
airflow or front-to-rear airflow)
Generic Rack Mount Kit (2-post)
Console Cable Kit that includes the following items:
RJ-45 (plug) to RJ-45 (plug) serial cable (1 m)
Mini-USB to RJ-45 (jack) adapter cable (0.2 m) with retention clip
DB-9 to RJ-45 (jack) adapter
Documentation package
Configuration notes:
Power cables are not included and must be ordered together with the switch (see "Power supplies
and cables" for details).
QSFP+ and SFP/SFP+ transceivers and cables are not included and should be ordered together
with the switch (see "Transceivers and cables" for details).
The RackSwitch G8272 supports Features on Demand (FoD) license keys to enable additional features. The
ONIE FoD option enables customers to download an ONIE boot loader and install it on the switch, and 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 RackSwitch G8272.
Table 4. FoD upgrade options
Description
Part
number
Feature
code
Lenovo RackSwitch G8272 ONIE Open Switch OS Installer 00YL963 AUE2
Lenovo RackSwitch G8272 Advanced Instrumentation Tools 00YL029* AUE1*
* Supported only for Cloud NOS.
Lenovo RackSwitch G8272 8

Transceivers and cables
With the flexibility of the G8272 switch, customers can choose the following connectivity technologies:
For 1 GbE links, customers can use RJ-45 SFP transceivers with UTP cables up to 100 meters.
Customers that need longer distances can use a 1000BASE-SX transceiver, which can drive
distances up to 220 meters with 62.5 µ multimode fiber (OM1) and up to 550 meters with 50 µ
multimode fiber (OM2), or the 1000BASE-LX transceivers that support distances up to 10 kilometers
with single-mode fiber (1310 nm).
For 10 GbE links, customers can use SFP+ direct-attached copper (DAC) cables for in-rack cabling
for distances up to 7 meters or SFP+ active optical cables (AOCs) for distances up to 20 meters.
These 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 transceiver supports distances up to 300 meters over OM3
multimode fiber or up to 400 meters over OM4 multimode fiber. The 10GBASE-LR transceivers can
support distances up to 10 kilometers on single mode fiber. For extended distances, the 10GBASE-
ER transceivers can support distances up to 40 kilometers on single mode fiber.
To increase the number of available 10 GbE ports, customers can split out four 10 GbE ports for
each 40 GbE port by using QSFP+ to 4x SFP+ DAC or active optical breakout cables for distances
up to 5 meters. For distances up to 100 meters, the 40GBASE-iSR4 QSFP+ transceivers can be
used with OM3 optical MPO-to-LC breakout cables or up to 150 meters with OM4 optical MPO-to-
LC breakout cables. For longer distances, the 40GBASE-eSR4 transceivers can be used with OM3
optical MPO-to-LC breakout cables for distances up to 300 meters or OM4 optical MPO-to-LC
breakout cables for distances up to 400 meters.
For 40 GbE to 40 GbE connectivity, customers can use the affordable 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.
With multimode fiber LC cables, customers can use the 40GBASE QSFP+ bi-directional
transceivers for distances up to 100 meters with OM3 MMF LC cables or up to 150 meters with
OM4 MMF LC cables.
With multimode fiber MPO cables, customers can use the 40GBASE-SR4/iSR4 QSFP+ transceivers
for distances up to 100 meters with OM3 MMF MPO cables or up to 150 meters with OM4 MMF
MPO cables. For distances up to 300 meters, the 40GBASE-eSR4 QSFP+ transceiver can be used
with OM3 MMF MPO cables or up to 400 meters with OM4 MMF MPO cables.
For distances up to 10 kilometers, the 40GBASE-LR4 QSFP+ transceiver can be used with single
mode fiber LC cables.
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The following table lists the supported cables and transceivers.
Table 5. Supported SFP/SFP+ transceivers and DAC cables
Description
Part
number
Feature
code
Maximum
quantity
supported
SFP transceivers - 1 GbE
Lenovo 1000BASE-T (RJ-45) SFP Transceiver (no 10/100 Mbps support) 00FE333 A5DL 48
Lenovo 1000BASE-SX SFP Transceiver 81Y1622 3269 48
Lenovo 1000BASE-LX SFP Transceiver 90Y9424 A1PN 48
SFP+ transceivers - 10 GbE
Lenovo Dual Rate 1/10Gb SX/SR SFP+ Transceiver 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 10
Lenovo 10GBASE-T SFP+ Transceiver 7G17A03130 AVV1 48
Optical cables for 1 GbE SX SFP, 10 GbE SR SFP+, and 40 GbE SR QSFP+ BiDi transceivers
Lenovo 0.5m LC-LC OM3 MMF Cable 00MN499 ASR5 48
Lenovo 1m LC-LC OM3 MMF Cable 00MN502 ASR6 48
Lenovo 3m LC-LC OM3 MMF Cable 00MN505 ASR7 48
Lenovo 5m LC-LC OM3 MMF Cable 00MN508 ASR8 48
Lenovo 10m LC-LC OM3 MMF Cable 00MN511 ASR9 48
Lenovo 15m LC-LC OM3 MMF Cable 00MN514 ASRA 48
Lenovo 25m LC-LC OM3 MMF Cable 00MN517 ASRB 48
Lenovo 30m LC-LC OM3 MMF Cable 00MN520 ASRC 48
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 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 7m Passive SFP+ DAC Cable 00D6151 A3RH 48
SFP+ active direct-attach cables - 10 GbE
Lenovo 1m Active DAC SFP+ Cable 00VX111 AT2R 48
Lenovo 3m Active DAC SFP+ Cable 00VX114 AT2S 48
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Lenovo 5m Active DAC SFP+ Cable 00VX117 AT2T 48
QSFP+ transceivers - 40 GbE
Lenovo 40GBase QSFP+ Bi-Directional Transceiver 00YL631 ATYW 4
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 1m QSFP+ to QSFP+ Active Optical Cable 7Z57A04256 AX42 6
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
QSFP+ direct-attach 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+ 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
Spare console cables
Console Cable Kit Spare (RJ-45/DB9) 90Y9462 A2MG 1
Description
Part
number
Feature
code
Maximum
quantity
supported
Lenovo RackSwitch G8272 11

The network cables that can be used with the switch are listed in the following table.
Table 6. G8272 network cabling requirements
Transceiver Standard Cable Connector
40 Gb Ethernet
40Gb SR QSFP+ BiDi
(00YL631)
40GBASE-SR
BiDi
Up to 30 m with fiber optic cables supplied by Lenovo
(see Table 3); up to 100 m with OM3 or up to 150 m
with OM4 multimode fiber optic cable
LC
40Gb SR4 QSFP+
(49Y7884)
40GBASE-SR4 10 m or 30 m MPO fiber optic cables supplied by
Lenovo (see Table 3); support for up to 100 m with OM3
or up to 150 m with OM4 multimode fiber optic cable
MPO
40Gb iSR4 QSFP+
(00D9865)
40GBASE-SR4 10 m or 30 m MPO fiber optic cables or MPO-4xLC
breakout cables up to 5 m supplied by Lenovo (see
Table 3); support for up to 100 m with OM3 or up to 150
m with OM4 multimode fiber optic cable
MPO
40Gb eSR4 QSFP+
(00FE325)
40GBASE-SR4 10 m or 30 m MPO fiber optic cables or MPO-4xLC
breakout cables up to 5 m supplied by Lenovo (see
Table 3); support for up to 300 m with OM3 or up to
400 m with OM4 multimode fiber optic cable
MPO
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 3)
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 3)
QSFP+
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 3); 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 3) SFP+
Direct attach copper
cable
10GSFP+Cu SFP+ DAC cables up to 7 m (see Table 3) SFP+
1 Gb Ethernet
1Gb RJ-45 SFP (00FE333) 1000BASE-T UTP Category 5, 5E, and 6 up to 100 meters RJ-45
1Gb SX SFP (81Y1622)
1/10Gb SFP+ (00MY034)
1000BASE-SX Up to 30 m with fiber optic cables supplied by Lenovo
(see Table 3); 850 nm multimode fiber cable 50 µ (OM2)
up to 550 m or 62.5 µ (OM1) up to 220 m
LC
1Gb LX SFP (90Y9424) 1000BASE-LX 1310 nm single-mode fiber optic cable up to 10 km LC
Management ports
1 GbE management port 1000BASE-T UTP Category 5, 5E, and 6 up to 100 meters RJ-45
Serial port RS-232 DB-9/RJ-45-to-Mini-USB (comes with the switch) Mini-USB
Lenovo RackSwitch G8272 12

Cloud NOS software features
The RackSwitch G8272 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
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 and TACACS+ authentication and authorization
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
Routing protocols (OSPF v2 and BGP)
Policy-based routing (PBR)
DHCP Relay and DHCP Snooping
IGMP snooping
DNS client
Lenovo RackSwitch G8272 13

IPv6 Layer 3 functions:
IPv6 host management
IPv6 forwarding
Virtual Router Redundancy Protocol (VRRP) for router redundancy
Static routes
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).
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
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
Lenovo RackSwitch G8272 14

Enterprise NOS software features
The RackSwitch G8272 with ENOS has the following 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 Trunk Failover to support active/standby configurations of NIC teaming on servers
Hot Links provides basic link redundancy with fast recovery for network topologies that
require Spanning Tree to be turned off
VLAN support:
Up to 4095 VLANs supported per switch, with VLAN numbers 1 - 4095 (VLAN 4095 is used
by the management network.)
Port-based and protocol-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
Private VLANs support as defined in RFC 5517
Security:
VLAN-based, MAC-based, and IP-based access control lists (ACLs)
802.1x port-based authentication
Multiple user IDs and passwords
User access control
Radius, TACACS+, and LDAP/LDAPS authentication and authorization
NIST 800-131A Encryption
Selectable encryption protocol
Secure Input/Output Module (SIOM) policy: Secure and Legacy modes
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) with Explicit Congestion Notification (ECN) to help
avoid congestion
IPv4/IPv6 ACL metering
Lenovo RackSwitch G8272 15

IP v4 Layer 3 functions:
Host management
IP forwarding
Network address translation (NAT)
IP filtering with ACLs, up to 256 IPv4 ACLs supported
Virtual Router Redundancy Protocol (VRRP) for router redundancy
Support for up to 128 static routes
Routing protocol support (RIP v1, RIP v2, OSPF v2, and BGP)
Support for policy-based routing (PBR)
Support for DHCP Relay
Support for IGMP snooping and IGMP relay
Support for Protocol Independent Multicast (PIM) in Sparse Mode (PIM-SM) and Dense
Mode (PIM-DM).
IPv6 Layer 3 functions:
IPv6 host management
IPv6 forwarding
Up to 128 static routes
Support for OSPF v3 routing protocol
IPv6 filtering with ACLs, up to 128 IPv6 ACLs supported
OpenFlow 1.0 and 1.3.1 support
Virtualization:
Unified Fabric Port (UFP):
Up to 8 UFP vPorts per 10 GbE physical port with supported Emulex Virtual
Fabric Adapters (VFAs)
Up to 4 UFP vPorts per 10 GbE physical port with supported QLogic VFAs
Ethernet and storage (NAS, iSCSI, and FCoE) traffic on UFP vPorts (adapter specific)
Up to 1024 VLAN for the vPorts
VMready or 802.1Qbg Edge Virtual Bridging (not both) on the same physical port
Integration with L2 Failover
Support for Private VLANs
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
802.1Qbg Edge Virtual Bridging (EVB) is an IEEE standard for allowing networks to become
virtual machine (VM)-aware:
Virtual Ethernet Bridging (VEB) and Virtual Ethernet Port Aggregator (VEPA) are
mechanisms for switching between VMs on the same hypervisor.
Edge Control Protocol (ECP) is a transport protocol that operates between two peers
over an IEEE 802 LAN that provides reliable, in-order delivery of upper layer protocol
data units.
Virtual Station Interface (VSI) Discovery and Configuration Protocol (VDP) allows
centralized configuration of network policies that persist with the VM, independent of
its location.
EVB Type-Length-Value (TLV) is used to discover and configure VEPA, ECP and VDP.
VMready support:
Up to 4,096 virtual entities (VEs)
Automatic VE discovery
Up to 4,093 local or distributed VM groups for VEs
NMotion® feature for automatic network configuration migration
VXLAN Gateway enables the communication between physical and virtual devices using the
VXLAN protocol for VMware NSX integration.
Lenovo RackSwitch G8272 16

Converged Enhanced Ethernet:
Priority-Based Flow Control (PFC) (IEEE 802.1Qbb) extends 802.3x standard 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.
FCoE:
FC-BB5 FCoE specification compliant
FCoE transit switch operations
FCoE Initialization Protocol (FIP) support for automatic ACL configuration
FCoE Link Aggregation Group (LAG) support
Supports 2,048 FCoE sessions with FIP Snooping by using Class ID ACLs
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) and Precision Time Protocol (PTP) for switch clock
synchronization
Netconf (XML)
Lenovo Switch Center management application (optional; sold separately)
Lenovo XClarity (optional; sold separately) for discovery, inventory, monitoring and events
Lenovo Networking Content Pack for VMware vRealize Log Insight (optional download) for
automated log management
Monitoring:
Switch LEDs for port status and switch status indication
Remote Monitoring (RMON) agent to collect statistics and proactively monitor switch
performance
Port mirroring for analyzing network traffic passing through switch
Change tracking and remote logging with syslog feature
Support for sFLOW agent for monitoring traffic in data networks (separate sFLOW analyzer
required elsewhere)
The following features are not supported with IPv6:
Bootstrap Protocol (BOOTP) and DHCP
RADIUS, TACACS+ and LDAP
VMware Virtual Center (vCenter) for VMready
Routing Information Protocol (RIP)
Border Gateway Protocol (BGP)
Protocol Independent Multicast (PIM)
Virtual Router Redundancy Protocol (VRRP)
sFLOW
Ethernet standards
Lenovo RackSwitch G8272 17

Ethernet standards
The switch supports the following Ethernet standards:
IEEE 802.1AB Data Center Bridging Capability Exchange Protocol (DCBX) (ENOS only)
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 802.1Qbg Edge Virtual Bridging (ENOS only)
IEEE 802.1Qbb Priority-Based Flow Control (PFC) (ENOS only)
IEEE 802.1Qaz Enhanced Transmission Selection (ETS) (ENOS only)
IEEE 802.1x port-based authentication (ENOS only)
IEEE 802.1w Rapid STP (RSTP)
IEEE 802.3 10BASE-T Ethernet
IEEE 802.3ab 1000BASE-T copper twisted pair Gigabit Ethernet
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 802.3ba 40GBASE-SR4 short range fiber optics 40 Gb Ethernet
IEEE 802.3ba 40GBASE-CR4 copper 40 Gb Ethernet
IEEE 802.3u 100BASE-TX Fast Ethernet
IEEE 802.3x Full-duplex Flow Control
IEEE 802.3z 1000BASE-SX short range fiber optics Gigabit Ethernet
IEEE 802.3z 1000BASE-LX long range fiber optics Gigabit Ethernet
Cooling
The G8272 switch supports up to four variable speed, hot-swap fan assemblies (four fan assemblies come
standard with the switch and they provide 3+1 redundancy). Spare fan assemblies can be ordered, if
required (see the following table). Each option contains one hot-swap fan assembly (rear-to front or front-
to-rear).
Table 7. Fan assembly spare options
Description
Part
number
Feature
code
Rear to front airflow (7159-HCW)
Lenovo RackSwitch Hot-swap, Rear-to-Front Fan Assembly 00FM441 ASRG
Front to rear airflow (7159-HCV)
Lenovo RackSwitch Hot-swap, Front-to-Rear Fan Assembly 00FM440 ASRF
Power supplies and cables
Lenovo RackSwitch G8272 18

Power supplies and cables
The G8272 switch supports up to two load-sharing, hot-swap 460 W power supplies (two power supplies
come standard with the switch). Spare power supplies can be ordered, if required (see the following
table). Each option contains one hot-swap power supply (rear-to-front or front-to-rear).
Table 8. Power supply spare options
Description
Part
number
Feature
code
Rear to front airflow (7159-HCW)
Lenovo RackSwitch Hot-Swap, Rear-to-Front 460W Power Supply 00FM443 ASRJ
Front to rear airflow (7159-HCV)
Lenovo RackSwitch Hot-Swap, Front-to-Rear 460W Power Supply 00FM442 ASRH
The G8272 switch ships standard without any AC 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 9. 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
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
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 RackSwitch G8272 19

Rack installation
The G8272 switch includes a 2-post rack mount kit.
For 4-post rack installations, the G8272 switch 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 G8272 switch (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 G8272 switches with rear to front and front to rear
airflow.
Table 10. Rack installation options
Description
Part
number
Feature
code
Rear to front airflow (7159-HCW)
Lenovo RackSwitch Adjustable 19" 4 Post Rail Kit 00D6185 A3KP
Air Inlet Duct for 487 mm RackSwitch 00FM507 ASTN
Front to rear airflow (7159-HCV)
Lenovo RackSwitch Adjustable 19" 4 Post Rail Kit 00D6185 A3KP
Lenovo RackSwitch Recessed 19" 4 Post Rail Kit 00CG089 A51M
Physical specifications
The G8272 switch features the following physical specifications:
Height: 44 mm (1.7 in.)
Width: 440 mm (17.3 in.)
Depth: 487 mm (19.2 in.)
Weight: 9.1 kg (20.0 lb)
Operating environment
The G8272 switch is supported in the following operating environment:
Temperature: 0 - 40 ºC (32 - 104 ºF).
Relative humidity: Non-condensing, 10 - 90%
Altitude: Up to 2,000 m (6,561 feet)
Acoustic noise: Less than 72 dB
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
Electrical power
Typical: 123 W
Maximum: 240 W
Heat dissipation
Typical: 420 BTU/hour
Maximum: 820 BTU/hour
Warranty and maintenance
Lenovo RackSwitch G8272 20