Lenovo RackSwitch G7028 Bedienungsanleitung

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.

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

Lenovo RackSwitch G7028 2

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

Lenovo RackSwitch G7028 3

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 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: 10 Gbps

1/10 GbE SFP+ transceivers: 1 Gbps or 10 Gbps

1 GbE SFP transceivers: 1 Gbps

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).

Management

interfaces

Industry standard command line interface (isCLI); SNMP v1 and v3. Optional Lenovo XClarity

for discovery, inventory, monitoring and events.

Lenovo RackSwitch G7028 4

Security features Secure Shell (SSH); Secure Copy (SCP); user level security, Role-based Access Control

(RBAC); LDAP, 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, 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

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).

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).

Lenovo RackSwitch G7028 5

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. These DAC cables have SFP+

connectors on each end, and they do not need separate transceivers.

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

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+ 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

Lenovo RackSwitch G7028 6

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

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

Direct attach 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

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

Software features

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

Private VLANs

Lenovo RackSwitch G7028 7

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 authentication and authorization

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)

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

Ethernet standards

Lenovo RackSwitch G7028 8

Ethernet standards

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

Power supplies and cables

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.

Table 5. G7000 RPS and DC cable options

Description

Part

number

Feature

code

Lenovo RackSwitch G7000 Redundant Power Supply 00AY123 A4BZ

Lenovo RackSwitch G7000 1.8m DC to DC RPS Power Cable 00AY121 A4C0

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

Warranty Flyer

Important Notices Flyer

Documentation CD-ROM

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.

Lenovo RackSwitch G7028 9

The G7028 switch and G7000 RPS option ship standard without any AC power cables. The part numbers

and feature codes to order the AC power cables 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.

Lenovo RackSwitch G7028 10

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