Lenovo RackSwitch G7028

The Lenovo RackSwitch™ G7028 is an inexpensive, entry-level Layer 2 1/10 Gb Ethernet switch that is designed for the data center. Data center customers continue to deploy applications by using 1 GbE networking switches while 10 GbE continues to grow for customer solutions that require greater I/O bandwidth. The RackSwitch G7028 is an ideal solution for data center customers who need an economical 1 Gb and 10 Gb connectivity solution.

The RackSwitch G7028 (see the following figure) is a top-of-rack data center switch that delivers excellent non-blocking, wire speed performance at an attractive price point. It supports 24x 10/100/1000BASE-T RJ-45 ports and four 10 Gigabit Ethernet SFP+ ports standard, while typically using only 45 watts of power. The RackSwitch G7028 is also designed with rear-to-front airflow, which allows for flexible mounting of the switch in a rack cabinet and provides convenient cable management and significant savings in cooling costs.

Figure 1. Lenovo RackSwitch G7028

The RackSwitch G7028 is designed with non-blocking, line-rate throughput.

The RackSwitch G7028 supports an optional external redundant power supply with the Lenovo RackSwitch G7000 Redundant Power Supply option.

The RackSwitch G7028 is designed specifically for the data center environment with server-matching airflow, cost-effective Layer 2 switching and ease of configuration management.

Networking Operating System software features deliver seamless, standards-based integration into upstream switches.

The RackSwitch G7028 switch is considered particularly suited for the following customers:

• Customers who want to use GbE in their infrastructure (servers and networking)
• Customers who are implementing a virtualized environment and require multiple GbE ports
• Customers who require investment protection for 10 GbE ports
• Customers who want to reduce total cost of ownership (TCO) and improve performance while maintaining high levels of availability and security
• Customers who want to avoid or minimize oversubscription, which can result in congestion and loss of performance
• Customers who want to implement a converged infrastructure with NAS or iSCSI

The G7028 switch offers the following key features and benefits:

• Increases network performance

  The RackSwitch G7028 provides up to 128 Gbps of switching throughput, supports four SFP+ 10 Gb uplink ports for zero oversubscription, and has a port to port latency of 3.3 microseconds.

• Lower power and exceptional cooling

  The RackSwitch G7028 typically uses only 45 W of power. Unlike side-cooled switches, which can cause heat recirculation and reliability concerns, the RackSwitch G7028 switch's rear-to-front cooling design reduces data center air conditioning costs by matching airflow to the server’s configuration in the rack.

• Fault tolerance

  These switches learn alternative paths automatically and perform faster convergence if there is a link, switch, or power failure. The switch uses technologies, such as Virtual Link Aggregation, L2 trunk failover, and Hot Links.

• Seamless interoperability

  RackSwitch switches interoperate seamlessly with other vendors' upstream switches.

The RackSwitch G7028 supports an optional external redundant power supply with the Lenovo RackSwitch G7000 Redundant Power Supply (RPS) option that is shown in the following figure.

Figure 2. Lenovo RackSwitch G7000 Redundant Power Supply

The G7000 RPS option has the following features:

• Form factor: 1U rack mount
• Power connections: Four DC connections in the rear of the rack to connect to the G7028 and G7052 switches; one AC inlet connector to connect to the power source (rack PDU or wall connector)
• Airflow: Rear-to-front cooling
• Power: Approximately 55 - 276 W, which varies depending upon operating conditions and number and types of switches connected
• Rack installation: Generic rack-mount kit (2-post); optional flexible 4-post mounting option for the server rack and the communications rack
• LEDs: System LEDs to indicate status

The front panel of the RackSwitch G7028 is shown in the following figure.

Figure 3. Front panel of the RackSwitch G7028

The front panel of the G7028 contains the following components:

• LEDs that display the status of the switch module and the network.
• One RJ-45 RS-232 console port that provides another means to configure the switch module.
• A total of 24 1000BASE-T Ethernet ports for 10/100/1000 Mbps connections.
• Four SFP+ ports to attach SFP/SFP+ transceivers for 1 Gb or 10 Gb connections or DAC cables for 10 Gb Ethernet connections.
• One RJ-45 10/100/1000 Mb Ethernet port for out-of-band management.

The rear panel of the RackSwitch G7028 is shown in the following figure.

Figure 4. Rear panel of the RackSwitch G7028

The rear panel of the G7028 contains the following components:

• One AC power connector (IEC 320-C14)
• Three fans with N+1 redundancy
• One DC power connector for power supply redundancy

The rear panel of the RackSwitch G7000 RPS option is shown in the following figure.

Figure 5. Rear panel of the RackSwitch G7000 RPS option

The rear panel of the G7000 RPS option contains the following components:

• One AC power connector (IEC-320 C14)
• Four DC power connectors

The following table lists the RackSwitch G7028 system specifications.

The following table lists the G7028 switch models.

The part number for the G7028 switch includes the following items:

• One Lenovo RackSwitch G7028
• Generic Rack Mount Kit (2-post)
• Power Cord Retention Clip
• Console Cable Kit:
  • RJ-45 (plug) to RJ-45 (plug) cable (1 m)
  • Mini-USB to RJ-45 (jack) cable (0.2 m)
  • 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).
• SFP/SFP+ transceivers and cables are not included and should be ordered together with the switch, if required (see "Transceivers and cables" for details).

With the flexibility of the G7028 switch, customers can choose the following connectivity technologies:

• For 1 GbE links, customers can use RJ-45 UTP cables up to 100 meters. Customers that need longer distances can use the 1000BASE-SX transceivers in the SFP/SFP+ ports, which can drive distances up to 220 meters with 62.5 µ multi-mode fiber (OM1) and up to 550 meters with 50 µ multi-mode fiber (OM2), or the 1000BASE-LX transceivers that support distances up to 10 kilometers with single-mode fiber (1310 nm).

• For 10 GbE links (supported on SFP+ ports), customers can use direct-attached copper (DAC) SFP+ 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 can support 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.

The supported SFP/SFP+ and DAC cable options are listed in the following table.

Note: The features and specifications that are listed in this section are based on Networking OS 8.4.

The G7028 switch has the following software features:

• Scalability and performance:
  • Media access control (MAC) address learning with automatic updates
  • Static and LACP (IEEE 802.3ad) link aggregation (trunks)
  • Broadcast/multicast storm control
  • IGMP snooping for 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/destination IP or MAC addresses, or both
  • Fast port forwarding 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 network adapter 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:
  • Port-based and protocol-based VLANs
  • Up to 4095 VLANs supported per switch (512 active VLANs), with VLAN numbers 1 - 4095 (4095 is used for management connection only)
  • 802.1Q VLAN tagging support on all ports
  • 802.1x with Dynamic VLAN assignment
  • Full private VLANs
• Virtualization: Virtual Link Aggregation support
• 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
  • 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, VLANs) traffic classification and processing
  • Traffic shaping and re-marking based on defined policies
  • Eight priority queues per port for processing qualified traffic
  • Weighted random early detection with explicit congestion notification (WRED/ECN)
  • CPU priority policies (CoPP)
  • IPv4/IPv6 ACL metering
• IP v4 Layer 3 functions:
  • Host management
  • IP filtering with ACLs
  • Support for DHCP client
  • Support for IGMP snooping and IGMP relay
• IP v6 Layer 3 functions:
  • IPv6 host management
  • IPv6 filtering with ACLs
• Manageability:
  • Industry-standard CLI (isCLI)
  • Simple Network Management Protocol (SNMP V1 and V3)
  • Telnet interface for CLI
  • SSH and SSH v2
  • Secure Copy (SCP)
  • Secure FTP (sFTP)
  • Serial interface for CLI
  • Firmware image update (TFTP, FTP, or USB storage)
  • Lenovo XClarity (optional; sold separately) for discovery, inventory, monitoring and events
• Monitoring:
  • Switch LEDs for port status and switch module status indication
  • Remote Monitoring (RMON) agent to collect statistics and proactively monitor switch performance
  • Port mirroring for analyzing network traffic passing through the switch
  • Change tracking and remote logging with the syslog feature

The G7028 switch supports the following Ethernet standards:

• IEEE 802.1D Spanning Tree Protocol (STP)
• IEEE 802.1s Multiple STP (MSTP)
• IEEE 802.1w Rapid STP (RSTP)
• IEEE 802.1p Class of Service (CoS) prioritization
• IEEE 802.1Q Tagged VLAN (frame tagging on all ports when VLANs are enabled)
• IEEE 802.1x port-based authentication
• IEEE 802.3 10BASE-T Ethernet
• IEEE 802.3u 100BASE-TX Fast Ethernet
• IEEE 802.3ab 1000BASE-T copper twisted-pair Gigabit Ethernet
• IEEE 802.3z 1000BASE-SX short range fiber optics Gigabit Ethernet
• IEEE 802.3z 1000BASE-LX long range fiber optics Gigabit Ethernet
• IEEE 802.3ad Link Aggregation Control Protocol
• IEEE 802.3x Full-duplex Flow Control
• IEEE 802.3ae 10GBASE-SR short range fiber optics 10 Gb Ethernet
• IEEE 802.3ae 10GBASE-LR long range fiber optics 10 Gb Ethernet
• 10GSFP+Cu SFP+ Direct Attach Copper

The RackSwitch G7028 has one fixed 90 W AC (100 - 240 V) power supply with an IEC 320-C14 connector. 

Lenovo offers the optional Lenovo RackSwitch G7000 Redundant Power Supply for those customers who require redundant power. The optional power supply can support up to four Lenovo RackSwitch G7028 or G7052 switches.

The part numbers to order the G7000 Redundant Power Supply (RPS) and additional DC cables are listed in the following table.

The part number for the G7000 Redundant Power Supply (00AY123) includes the following items:

• One Lenovo RackSwitch G7000 Redundant Power Supply (rear-to-front airflow)
• Two 1.8 m DC to DC power cables
• Generic Rack Mount Kit (2-post)
• Power Cord Retention Kit
• Documentation package

The G7000 RPS option comes standard with two 1.8 m DC to DC power cables. More DC-to-DC power cables (part number 00AY121; each part number contains one cable) can be ordered, if needed.

The G7028 switch and G7000 RPS option include a 2-post rack mount kit.

For 4-post rack installations, the G7028 switch and G7000 RPS support the optional adjustable 19-inch, 4-post rail kit and the air inlet duct (optional for the 4-post rail kit) that are listed in the following table.

The G7028 switch features the following approximate dimensions and weight:

• Height: 44 mm (1.7 in.)
• Width: 440 mm (17.3 in.)
• Depth: 382 mm (15.0 in.)
• Weight: 5.3 kg (11.7 lb)

The G7000 RPS option features the following approximate dimensions and weight:

• Height: 44 mm (1.7 in.)
• Width: 444 mm (17.3 in.)
• Depth: 382 mm (15.0 in.)
• Weight: 5.4 kg (11.9 lb)

The G7028 switch is supported in the following operating environment:

• Temperature: 0 - 40 ºC.
• Relative humidity: Non-condensing, 10 - 90%
• Altitude: 2,000 m (6,561 feet)
• Acoustic noise: Less than 65 dB
• Input volt-amperes (VA)
  • Typical: 45 VA
  • Maximum: 58 VA
• Heat dissipation
  • Typical: 165 BTU/hour
  • Maximum: 200 BTU/hour

The G7000 RPS option is supported in the following operating environment:

• Temperature: 0 - 40 ºC.
• Relative humidity: Non-condensing, 10 - 90%
• Altitude: 2,000 m (6,561 feet)
• Acoustic noise: Less than 65 dB
• Input volt-amperes (VA)
  • Typical: 245 VA
  • Maximum: 413 VA
• Heat dissipation: 1,239 BTU/hour (maximum)

The RackSwitch G7028 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 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.

Some regions might have different warranty terms and conditions than the standard warranty. This is due to local business practices or laws in the specific region. Local service teams can assist in explaining region-specific terms when needed. Examples of region-specific warranty terms are second or longer business day parts delivery or parts-only 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 region-specific. Not all warranty service upgrades are available in every region. For information about Lenovo warranty service upgrade offerings that are available in your region, refer to the following resources:

• Service part numbers in Lenovo Data Center Solutions Configurator (DCSC):
  http://dcsc.lenovo.com/#/services
• Lenovo Services Availability Locator
  https://lenovolocator.com/

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 regions)
  • Advanced Service: 24x7 service coverage with 2-hour onsite response or 6-hour committed repair (available only in select regions)
• Premier Support

  Premier Support service offers direct access to Lenovo’s most advanced technicians for faster troubleshooting with single point of contact for end-to-end problem resolution and collaborative third-party software support.

• 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, region-specific details, and service limitations, please refer to the following documents:

• Lenovo Statement of Limited Warranty for Infrastructure Solutions Group (ISG) 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

The switch conforms to the following regulations:

• Safety certifications:
  • UL60950-1
  • CAN/CSA 22.2 No.60950-1
  • TUV/GS to EN 60950-1
  • IEC 60950-1, all country deviations
  • CNS 14336-1
  • Argentina Smark to IEC 60950-1
  • GB4943.1-2011
  • EAC
  • NOM-019
• Electromagnetic compatibility certifications:
  • FCC 47CFR Part 15 Class A
  • EN 55022 Class A
  • ICES-003 Class A
  • VCCI Class A
  • AS/NZS CISPR 22 Class A
  • CISPR 22 Class A
  • EN 55024
  • KCC Class A
  • CE
• Environmental: Reduction of Hazardous Substances (ROHS) Directive 2011/65/EU

The following table lists the network switches that are offered by Lenovo that can be used in RackSwitch G7028 network connectivity solutions.

For more information, see the list of Product Guides in the Top-of-rack Switches category:
http://lenovopress.com/servers/options/switches

The following table lists the external storage systems that are currently offered by Lenovo that can be used with the RackSwitch G7028 for external NAS or iSCSI SAN storage connectivity.

* Available only in EMEA.

^ Available only in PRC.
† Available worldwide except Latin America.
‡ Available only in Latin America.

The following table lists the rack cabinets that are offered by Lenovo that can be used in RackSwitch G7028 solutions.

For more information, see the list of Product Guides in the Rack cabinets category:
http://lenovopress.com/servers/options/racks

The following table lists the power distribution units (PDUs) that are offered by Lenovo that can be used in RackSwitch G7028 solutions.

For more information, see the list of Product Guides in the Power Distribution Units category:
http://lenovopress.com/servers/options/pdu

The following table lists the uninterruptible power supply (UPS) units that are offered by Lenovo that can be used in RackSwitch G7028 solutions.

For more information, see the list of Product Guides in the Uninterruptible Power Supply Units category:
http://lenovopress.com/servers/options/ups#rt=product-guide

Lenovo Financial Services reinforces Lenovo’s commitment to deliver pioneering products and services that are recognized for their quality, excellence, and trustworthiness. Lenovo Financial Services offers financing solutions and services that complement your technology solution anywhere in the world.

We are dedicated to delivering a positive finance experience for customers like you who want to maximize your purchase power by obtaining the technology you need today, protect against technology obsolescence, and preserve your capital for other uses.

We work with businesses, non-profit organizations, governments and educational institutions to finance their entire technology solution. We focus on making it easy to do business with us. Our highly experienced team of finance professionals operates in a work culture that emphasizes the importance of providing outstanding customer service. Our systems, processes and flexible policies support our goal of providing customers with a positive experience.

We finance your entire solution. Unlike others, we allow you to bundle everything you need from hardware and software to service contracts, installation costs, training fees, and sales tax. If you decide weeks or months later to add to your solution, we can consolidate everything into a single invoice.

Our Premier Client services provide large accounts with special handling services to ensure these complex transactions are serviced properly. As a premier client, you have a dedicated finance specialist who manages your account through its life, from first invoice through asset return or purchase. This specialist develops an in-depth understanding of your invoice and payment requirements. For you, this dedication provides a high-quality, easy, and positive financing experience.

For your region specific offers please ask your Lenovo sales representative or your technology provider about the use of Lenovo Financial Services. For more information, see the following Lenovo website:
http://www.lenovofs.com

For more information about the RackSwitch G7028, see the following publications that are available at the RackSwitch G7028/G7052 InfoCenter:
http://systemx.lenovofiles.com/help/topic/com.lenovo.rackswitch.g7052.doc/rs_g7052.html

• RackSwitch G7028 Installation Guide
• RackSwitch G7028/G7052 Application Guide
• RackSwitch G7028/G7052 Industry Standard CLI Command Reference

For discussions on various Lenovo networking topics, visit the Data Center Networking Community Forum:
http://forums.lenovo.com/t5/Datacenter-Networking/ct-p/nh_eg