Lenovo 7309BAX, 7159-HCP User Manual

Lenovo RackSwitch G7028

Product Guide

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

Did you know?

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.

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Lenovo RackSwitch G7028 1

Key features

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

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Components and connectors

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

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System specifications

The following table lists the RackSwitch G7028 system specifications.

Table 1. System specifications

Component Specification

Form factor 1U rack mount

Ports 24x Gigabit Ethernet (GbE) RJ-45 fixed ports

4x SFP/SFP+ ports

SFP/SFP+ media
types

10 Gb Ethernet SFP+:

10 GbE short-range (SR) SFP+ transceivers
10 GbE long-range (LR) SFP+ transceivers
10 GbE RJ-45 SFP+ transceivers
10 GbE SFP+ active optical cables (AOCs)
10 GbE SFP+ direct attach copper (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 1 GbE RJ-45 fixed ports: 10/100/1000 Mbps autosensing

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.

Software features Lenovo Networking OS:

Layer 2 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), IP v4 management, IP v6 management.

Performance Non-blocking architecture with wire-speed forwarding of traffic:

Up to 128 Gbps aggregated throughput
As low as 3.3 microseconds switching latency
Up to 96 Million packets per second (Mpps)
Up to 12,288-byte jumbo frames

Scalability MAC address forwarding database entries: 8,000

VLANs: 4,095 (512 active VLANs)
Per VLAN Rapid Spanning Tree (PVRST) instances: 128
Multiple STP (MSTP) instances: 32
Link aggregation groups: 16
Ports in a link aggregation group: 8

Cooling Three 2+1 redundant fixed fans. Rear (non-port side) to front (port side) airflow.

Power supply One fixed 90 W AC (100 - 240 V) power supply (IEC 320-C14 connector). Optional external

power supply unit (PSU) is available for redundancy (one PSU with 4x 90 W DC output for up
to four G7028 or G7052 switches).

Hot-swap parts SFP/SFP+ transceivers, SFP+ DAC cables.

Management
ports

1x 10/100/1000 Mb Ethernet port (RJ-45); 1x RS-232 port (RJ-45); 1x USB port (for additional
firmware, log, and configuration files storage).

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Management
interfaces

Industry standard command line interface (isCLI); SNMP v1 and v3. Optional Lenovo XClarity
for discovery, inventory, monitoring and events.

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); port-based network access control (IEEE 802.1x).

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, 2­hour 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 1­year and 2-year warranty extensions include software support and subscription.

Mean Time
Between Failures

128,407 hours with ambient operating temperature of 40° C

Dimensions Height: 44 mm (1.7 in.); width: 439 mm (17.3 in.); depth: 382 mm (15.0 in.)

Weight 5.3 kg (11.7 lb).

Component Specification

Models

The following table lists the G7028 switch models.

Table 2. G7028 switch models

Description

Part
number

Machine
Type-Model

Feature
code

Lenovo RackSwitch G7028 (Rear-to-Front) 7159BAX 7159-HCP AT09

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
Warranty Flyer
Important Notices Flyer
Documentation CD-ROM

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).

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Transceivers and cables

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.

Table 3. 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 4

Lenovo 1000BASE-SX SFP Transceiver 81Y1622 3269 4

Lenovo 1000BASE-LX SFP Transceiver 90Y9424 A1PN 4

SFP+ transceivers - 10 GbE

Lenovo Dual Rate 1/10Gb SX/SR SFP+ Transceiver 00MY034 ATTJ 4

Lenovo 10GBASE-SR SFP+ Transceiver 46C3447 5053 4

Lenovo 10GBASE-LR SFP+ Transceiver 90Y9412 A1PM 4

Lenovo 10GBASE-T SFP+ Transceiver 7G17A03130 AVV1 4

Optical cables for 1 GbE SFP SX and 10 GbE SFP+ SR transceivers

Lenovo 0.5m LC-LC OM3 MMF Cable 00MN499 ASR5 4

Lenovo 1m LC-LC OM3 MMF Cable 00MN502 ASR6 4

Lenovo 3m LC-LC OM3 MMF Cable 00MN505 ASR7 4

Lenovo 5m LC-LC OM3 MMF Cable 00MN508 ASR8 4

Lenovo 10m LC-LC OM3 MMF Cable 00MN511 ASR9 4

Lenovo 15m LC-LC OM3 MMF Cable 00MN514 ASRA 4

Lenovo 25m LC-LC OM3 MMF Cable 00MN517 ASRB 4

Lenovo 30m LC-LC OM3 MMF Cable 00MN520 ASRC 4

SFP+ active optical cables - 10 GbE

Lenovo 1m SFP+ to SFP+ Active Optical Cable 00YL634 ATYX 4

Lenovo 3m SFP+ to SFP+ Active Optical Cable 00YL637 ATYY 4

Lenovo 5m SFP+ to SFP+ Active Optical Cable 00YL640 ATYZ 4

Lenovo 7m SFP+ to SFP+ Active Optical Cable 00YL643 ATZ0 4

Lenovo RackSwitch G7028 6

Lenovo 15m SFP+ to SFP+ Active Optical Cable 00YL646 ATZ1 4

Lenovo 20m SFP+ to SFP+ Active Optical Cable 00YL649 ATZ2 4

SFP+ passive direct-attach cables - 10 GbE

Lenovo 0.5m Passive SFP+ DAC Cable 00D6288 A3RG 4

Lenovo 1m Passive SFP+ DAC Cable 90Y9427 A1PH 4

Lenovo 1.5m Passive SFP+ DAC Cable 00AY764 A51N 4

Lenovo 2m Passive SFP+ DAC Cable 00AY765 A51P 4

Lenovo 3m Passive SFP+ DAC Cable 90Y9430 A1PJ 4

Lenovo 5m Passive SFP+ DAC Cable 90Y9433 A1PK 4

Lenovo 7m Passive SFP+ DAC Cable 00D6151 A3RH 4

SFP+ active direct-attach cables - 10 GbE

Lenovo 1m Active DAC SFP+ Cable 00VX111 AT2R 4

Lenovo 3m Active DAC SFP+ Cable 00VX114 AT2S 4

Lenovo 5m Active DAC SFP+ Cable 00VX117 AT2T 4

Spare console cables

Console Cable Kit Spare (RJ45/DB9) 90Y9462 A2MG 1

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 4. G7028 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 3); up to 300 m with OM3 multimode fiber or
up to 400 m with OM4 multimode fiber

LC

10Gb LR SFP+ (90Y9412) 10GBASE-LR 1310 nm single-mode fiber cable up to 10 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

RJ-45 ports (fixed) 1000BASE-T UTP Category 5, 5E, and 6 up to 100 meters RJ-45

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 cable up to 10 km LC

Management ports

Ethernet management port 1000BASE-T UTP Category 5, 5E, and 6 up to 100 meters RJ-45

RS-232 serial console port RS-232 DB-9/RJ-45-to-RJ-45 (comes with the switch) RJ-45

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