®
IBM System Networking RackSwitch G7028
IBM Redbooks Product Guide
This IBM® Redbooks® Product Guide describes the IBM System Networking RackSwitch™ G7028. The
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 using 1 GbE networking switches
while 10 GbE continues to grow for customer solutions requiring greater I/O bandwidth. The RackSwitch
G7028 is an ideal solution for data center customers looking for an economical 1 Gb and 10 Gb
connectivity solution.
The RackSwitch G7028 (Figure 1) is a top-of-rack data center switch that delivers excellent non-blocking,
wire speed performance at an attractive price point. It supports twenty-four 10/100/1000BASE-T RJ45
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 that matches the IBM System x and Power
Systems rack servers and IBM BladeCenter and Flex System chassis for maximizing hot and cold aisle
data center designs. IBM offers the IBM System Networking RackSwitch G7000 Redundant Power Supply
(Figures 5 and 6) for those customers requiring redundant power; it can support up to four RackSwitch
G7028 switches.
Figure 1. IBM System Networking RackSwitch G7028 (Front)
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 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.
IBM Networking Operating System software features deliver seamless, standards-based integration
into existing upstream switches.
IBM System Networking RackSwitch G7028 1
Summary: IBM System Networking RackSwitch G 7028
The RackSwitch G7028 provides the following features:
Performance: The RackSwitch G7028 provides up to 128 Gbps of throughput and supports four
SFP+ 10 G 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 consumes just 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 L2 trunk failover,
advanced VLAN-based failover, HotLink, and Uplink Failure Detection (UFD).
Seamless interoperability : IBM switches interoperate seamlessly with other vendors' upstream
switches.
The RackSwitch G7028 comes with an IBM limited three-year hardware warranty, including three years of
software upgrades.
Figure 2 shows an example of data center airflow to maintain hot and cold aisles.
Figure 2. Data center airflow to maintain hot and cold aisles
Features and specifications
This section lists the features and specifications.
Performance
Here are the performance features and specifications:
Single switch ASIC design
Full line rate performance
IBM System Networking RackSwitch G7028 2
128 Gbps (full duplex) switching architecture
Low latency: 3.3 microseconds
96 million packets per second (mpps)
Hardware features
The front and rear views are shown in Figures 3 and 4.
Figure 3. Front view of the RackSwitch G7028
Figure 4. Rear view of the RackSwitch G7028
Here are the RackSwitch G7028 hardware features:
Ports in the rear of the rack to match System x®, Power Systems, IBM Flex System™, PureSystems™,
and IBM BladeCenter® designs
Interface options
o
Twenty-four 10/100/1000BASE-T ports (RJ-45).
o
Four 10 GbE SFP+ ports.
o
One USB port for external mass storage devices.
o
One out of band (OOB) Ethernet management port.
o
RS-232 serial console port
Dimensions: 17.3 in. wide, 15 in. deep, 1 RU high
Weight: 5.3 kg (11.68 lb)
Airflow: Rear-to-front cooling
Power:
o
Internal power supply.
o
External power supply (Optional) to help provide redundancy.
o
Typical power for the RackSwitch G7028 is approximately 45 W and varies depending upon
operation conditions.
Rack Installation Kit
o
Generic Rail Mount Kit (2-post).
o
Optional, flexible 4-post mounting options for both the server rack and the datacom rack.
IBM System Networking RackSwitch G7028 3
System LEDs indicate the status
Environmental specifications
o
Temperature: Ambient operating: 0 to 40 ºC.
o
Relative humidity: Non-condensing, operating 10 - 90%
o
Altitude: Operating 1,800 m (6,000 feet)
o
Acoustic noise: Less than 65 dB
o
Typical heat dissipation: 155 BTU/hour
Software features
Here are the RackSwitch G7028 software features:
Security
o
LDAP
o
802.1x with VLAN assignment (EAP)
o
RADIUS
o
TACACS+
o
Wire Speed Filtering: Allow and Deny
o
SSH v1 and v2
o
HTTPS Secure BBI
o
Secure Copy Protocol (SCP)
o
Secure Interface Login and Password
Management
o
MAC address move notification
o
Shift B Boot menu (Password Recovery/Factory Default)
o
Management ACLs
o
Netboot
VLANs
o
Port-based VLAN
o
4096 VLAN IDs are supported
o
512 Active VLANs (802.1Q)
o
802.1x with Dynamic VLAN assignment
o
Private VLAN
Trunking
o
LACP
o
Minimum links per LACP
o
Static trunks (Etherchannel)
o
Configurable trunk hash algorithm
o
Ingress-port-based hashing
o
Enhanced reporting of statistics
Virtual Link Aggregation (vLAG)
o
L2 environment and IGMP supported
o
IGMP Snooping
Spanning Tree
o
Multiple Spanning Tree (802.1 s)
o
Rapid Spanning Tree (802.1 w)
o
PVRST+
o
Auto assignment of VLANs to STG
o
BPDU Guard
o
Root Guard
o
Loop Guard
Quality of service
o
QoS 802.1p
o
DSCP remarking
IBM System Networking RackSwitch G7028 4
o
Metering
o
4 MB shared packet buffer
o
Weighted random early detection with explicit congestion notification (WRED/ECN)
o
CPU priority policies (CoPP)
High availability
o
HotLinks
o
Layer 2 Failover
Multicast
o
IGMP v1, v2, and v3 snooping with 256 IGMP groups
Monitoring
o
Port mirroring
o
ACL logging
o
CPU logging
Management features
Here are the RackSwitch G7028 management features for the clients:
ISCLI (Cisco-like)
Browser-based interface Telnet/ssh
Standard protocols
Here are the RackSwitch G7028 standard protocols:
SNMP v1, v2c, and v3
IPv6
RMON
Secondary NTP Support
DHCP Client
LLDP
8K MAC Table
12 K Jumbo Frames
802.3X Flow Control
You can upgrade the firmware through serial or TFTP.
Summary: IBM System Networking RackSwitch G 7000 Redundant Power Supply
The front and rear views of the IBM System Networking RackSwitch G7000 Redundant Power Supply are
shown in Figures 5 and 6.
Figure 5. Front view of the RackSwitch G7000 Redundant Power Supply
Figure 6. Rear view of the RackSwitch G7000 Redundant Power Supply
IBM System Networking RackSwitch G7028 5
Here are the RackSwitch G7000 Redundant Power Supply (RPS) hardware features:
Model: IBM RackSwitch G7000 RPS (Rear-to-Front cooling) connections in the rear of the rack to
match the RackSwitch G7028 switch.
Connections: Four DC connections to connect to the RackSwitch G7028 switch.
Dimensions: 17.3 in. wide, 15 in. deep, 1 RU high.
Weight: 11.9 lb (5.4 kg).
Airflow: Rear-to-front cooling.
Power:
o
Internal power supply
o
Typical power for the G7000 RPS is approximately 244 W and varies depending upon operating
conditions.
Rack Installation Kit:
o
Generic Rail Mount Kit (2-post)
o
Optional, flexible 4-post mounting options for both the server rack and the datacom rack
LEDs: System LEDs to indicate status.
Environmental specifications.
o
Temperature: Ambient operating: 0 to 40 ºC
o
Relative humidity: Non-condensing, operating 10 - 90%
o
Altitude: Operating 1,800 m (6,000 feet)
o
Acoustic noise: Less than 65 dB
Popular configurations
This section describes popular configurations of the RackSwitch G7028.
Rack-optimized server aggregation of 1 GbE attached rack servers
Some of the typical deployments for the RackSwitch G7028 include Data Center Top of Rack, Low Cost
L2 connection, and remote offices for various workloads, such as email, file and print services,
collaborative, web serving, and cloud.
Here are examples of possible high-concentration configurations for rack or blade server
implementations:
Power Systems or System x 1U or 2U servers with a 1 GbE adapter installed
Power Systems or System x 4U servers with multiple 1 GbE adapters per server
IBM BladeCenter or IBM Flex System using any of the following modules in the chassis:
o
IBM BladeCenter Layer 2/3 Copper and Fiber Gigabit Ethernet Switch Modules
o
IBM BladeCenter Layer 2-7 Gigabit Ethernet Switch Module
o
IBM BladeCenter 1/10 Gb Uplink Ethernet Switch Module
o
Intelligent Copper Pass-Thru Module for IBM BladeCenter
o
Server Connectivity Module for IBM BladeCenter
o
IBM Flex System using EN2092 Ethernet modules in the chassis
IBM System Networking RackSwitch G7028 6
Table 1 lists the features and benefits of the RackSwitch G7028 for server aggregation.
Table 1. Features and benefits of the RackSwitch G7028 for server aggregation
Features Benefits
Line-rate, non-blocking, all
24 ports
3.3 microseconds latency Fast application response times
Four 10 GbE uplink ports
(40 Gb bandwidth to the
core or upstream switch)
Standards-based Layer 2
protocols, industry standard
CLI
Supports compute and virtualization workloads
No oversubscription, full upstream throughput
Interoperates with existing network with no learning curve
Figure 7 shows rack-optimized server aggregation for 1 GbE attached rack servers or a Flex System
chassis.
Figure 7. Rack-optimized server aggregation for 1GbE attached rack servers or a Flex System chassis
Here are the features of the Server 1 GbE aggregation and connection to IBM System Storage:
A good price/performance point for a data center environment with 1 Gigabit performance and
investment protection for 10 GbE
Good for connectivity to network-attached storage
o
IBM Real-time Compression Appliance
o
IBM Scale Out Network Attached Storage
o
IBM System Storage N Series Gateway for SAN Storage Environments
o
IBM Storwize® V7000 Unified Disk System
IBM System Networking RackSwitch G7028 7
Ideal for connectivity to iSCSI
o
IBM Storwize® V3700 or Storwize V7000 Midrange Disk System
o
IBM System Storage SAN Volume Controller
o
IBM System Storage DS3500 or 5000
Figure 8 shows the RackSwitch G7028 with Storwize V7000 or Storwize V3700.
Figure 8. RackSwitch G7028 with Storwize V7000 or Storwize V3700
IBM System Networking RackSwitch G7028 8
Ordering information
Table 2 shows the IBM System x® part numbers and IBM Power Systems™ MTMs and Feature Codes for
ordering the RackSwitch G7028 and additional options.
Table 2. IBM part numbers and feature codes for ordering (part 1 of 2)
Description System x Power Systems MTM/FC
IBM System Networking RackSwitch G7028 (Rear-to-Front) 7309BAX 1455-24L
1 GbE options
IBM SFP RJ45 Transceiver 81Y1618 EB29
IBM SFP SX Transceiver 81Y1622 EB2A
IBM SFP LX Transceiver 90Y9424 ECB8
0.6 m Blue Cat5e Cable 40K5679 ECB0
1.5 m Blue Cat5e Cable 40K8785 ECB2
3 m Blue Cat5e Cable 40K5581 1111
10 m Blue Cat5e Cable 40K8927 1112
10 GbE options
IBM SFP+ SR Transceiver 46C3447 EB28
IBM SFP+ LR Transceiver 90Y9412 ECB9
0.5 m IBM Passive DAC SFP+ Cable 00D6288 ECBG
1 m IBM Passive DAC SFP+ Cable* 90Y9427 ECB4
1.5 m IBM Passive DAC SFP+ Cable 00AY764
2 m IBM Passive DAC SFP+ Cable 00AY765
3 m IBM Passive DAC SFP+ Cable* 90Y9430 ECB5
5 m IBM Passive DAC SFP+ Cable* 90Y9433 ECB6
7 m IBM Passive DAC SFP+ Cable* 00D6151 ECBH
1 m IBM Active DAC SFP+ Cable 95Y0323 EN01
3 m IBM Active DAC SFP+ Cable 95Y0326 EN02
5 m IBM Active DAC SFP+ Cable 95Y0329 EN03
*Passive cables are not supported for Power Systems 10 Gb NICs. They are used for switch to switch connectivity
only.
IBM System Networking RackSwitch G7028 9
Table 2. IBM part numbers and feature codes for ordering (part 2 of 2)
Description System x Power Systems MTM /FC
Miscellaneous options
IBM System Networking Adjustable 19" 4 Post Rail Kit 00D6185 EU27
Power Supply (comes with two DC to DC cables) 00AY123 EB2P
IBM System Networking RackSwitch G7000 1.8m DC to DC RPS
Power Cable
Console Cable Kit Spare 90Y9462 EUC4
1 m LC-LC Fiber Cable (networking) - Optical 88Y6851 ECBC
5 m LC-LC Fiber Cable (networking) - Optical 88Y6854 ECBD
25 m LC-LC Fiber Cable (networking) - Optical 88Y6857 ECBE
IBM ServicePac offerings (available in select countries )
3-year onsite repair 9x5 four-hour response 67586A7
3-year onsite repair 24x7 four-hour response 67586A8
4-year onsite repair 9x5 four-hour response 67586A9
4-year onsite repair 24x7 four-hour response 67586AA
5-year onsite repair 9x5 four-hour response 67586AB
5-year onsite repair 24x7 four-hour response 67586AC
00AY121 ELC4
Figure 9 shows examples of transceivers and DAC cables.
Figure 9. Examples of transceivers and DAC cables
IBM System Networking RackSwitch G7028 10
Figure 10 shows a 2-post Rack Mount Kit.
Figure 10. The 2-post Rack Mount Kit
The Switch module (Figure 1) part number/MTM includes the following items:
One RackSwitch G7028 (Rear-to-Front).
Generic Rack Mount Kit (2-post).
Power Cord Retention Clip.
RJ45 to DB9 serial cable (1.8 m).
Comes with an IBM limited 3-year hardware warranty with Next Business Day (NBD), 9x5, Customer
Replaceable Unit (CRU) warranty service and includes a 3-year software license, providing
entitlement to upgrades over that period.
Country-specific AC power cords, which are plugged into the power source (wall or PDU), must be
ordered separately. For more information about the available power cords for the RackSwitch G7028,
see Tables 3 and 4.
The Redundant Power Supply module (see Figures 5 and 6) part number/Feature Code includes the
following items:
One IBM RackSwitch G7000 Redundant Power Supply.
Two DC cables come standard for connectivity of two RackSwitch G7028 switches. Clients can order
additional DC cables (to connect up to four RackSwitch G7028 switches).
Power Cord Retention Clip.
Generic Rack Mount Kit (2-post).
Comes with an IBM limited 1-year hardware warranty or the remaining warranty of the RackSwitch
G7028 switch (whichever is longer).
Country-specific AC power cords, which are plugged into the power source (wall or PDU), must be
ordered separately. For more information about the available power cords for the RackSwitch G7028,
see Tables 3 and 4.
Note: Make sure that you include power cords that are relevant to your country of purchase. Small
form-factor pluggable plus (SFP+) transceivers are not included.
IBM System Networking RackSwitch G7028 11
Table 3 lists the part numbers and descriptions for IBM System x.
Table 3. IBM System x part numbers and descriptions
Part number Description
39Y7917 Power Cord Europe AC plug 10A/250 V; OPT
39Y7918 Power Cord Europe (Denmark) 10A/250 V; OPT
39Y7919 Power Cord Europe (Switzerland) 10A/250 V; OPT
39Y7920 Power Cord Europe (Israel) 10A/250 V; OPT
39Y7922 Power Cord Europe (South Africa) 10A/250 V; OPT
39Y7923 Power Cord UK 13A/250 V; OPT
39Y7924 Power Cord Australia/New Zealand 10A/250 V; OPT
39Y7925 Power Cord Korea 10A/250 V; OPT
46M2593 Power Cord Japan 2.8M AC plug 12A/125V; OPT
39Y7927 Power Cord India 10A/250 V; OPT
39Y7928 Power Cord China 16A/250 V; OPT
39Y7929 Power Cord Brazil 16A/250 V; OPT
39Y7930 Power Cord Uruguay/Argentina 16A/250 V; OPT
00CG265 Power Cord Taiwan AC plug 10A/250V, 2.8M; OPT
00CG267 Power Cord Taiwan AC plug 15A/125V; 2.8M; OPT
46M2592 2.8 m, 10A/250 V, C13 to NEMA 6-15P (US/Canada)
39Y7932 4.3 m, 10A/100-250V, C13 to IEC 320-C14 Rack Power Cable
39Y7937 1.5 m, 10A/100-250V, C13 to IEC 320-C14 Rack Power Cable
39Y7938 2.8 m, 10A/100-250V, C13 to IEC 320-C20 Rack Power Cable
IBM System Networking RackSwitch G7028 12
Table 4 shows the power cord descriptions and their IBM Power Systems and IBM System Storage®
Feature Codes.
Table 4. Power cord descriptions and IBM Power Systems and IBM System Storage Feature Codes
Description Feature code
Power Cord 4.3m (14-ft), Drawer to Wall/IBM PDU (250V/10A) 6458
Power Cord 4.3m (14-ft), Drawer to Wall/OEM PDU (250V/15A) U. S. 6469
Power Cord 1.8m (6-ft), Drawer to Wall (125V/15A) 6470
Power Cord 2.7m (9-ft), Drawer to Wall/OEM PDU (125V/15A) 6471
Power Cord 2.7m (9-ft), Drawer to Wall/OEM PDU (250V/16A) 6472
Power Cord 2.7m (9-ft), Drawer to Wall/OEM PDU (250V/10A) 6473
Power Cord 2.7m (9-ft), Drawer to Wall/OEM PDU, (250V/13A) 6474
Power Cord 2.7m (9-ft), Drawer to Wall/OEM PDU, (250V/16A) 6475
Power Cord 2.7m (9-ft), Drawer to Wall/OEM PDU, (250V/10A) 6476
Power Cord 2.7m (9-ft), Drawer to Wall/OEM PDU, (250V/16A) 6477
Power Cord 2.7m (9-ft), Drawer to Wall/OEM PDU, (125V/15A or 250V/10A) 6488
Power Cord 2.7m (9-ft), Drawer to Wall/OEM PDU, (250V/10A) 6493
Power Cord 2.7m (9-ft), Drawer to Wall/OEM PDU, (250V/10A) 6494
Power Cord 4.3m (14-ft), Drawer to Wall/OEM PDU (125V/15A) 6660
Power Cord 2.8m (9.2-ft), Drawer to Wall/IBM PDU, (250V/ 10A) 6665
Power Cord 2.7m (9-ft), Drawer to Wall/OEM PDU, (250V/10A) 6680
Power Cord 2.7m (9-ft), Drawer to Wall/OEM PDU, (250V/10A) 6671
Power Cord 1.5m (5-ft), Drawer to Wall/OEM PDU, (250V/10A) 6672
Related resources
For more information about the RackSwitch G7028, go to ibm.com/support/entry/portal/Documentation
and see the following RackSwitch G7028 product resources:
IBM RackSwitch G7028 Installation Guide
IBM RackSwitch G7028 isCLI Command Reference
IBM RackSwitch G7028 Application Guide
IBM RackSwitch G7028 Browser-Based Interface Quick Guide
IBM System Networking RackSwitch G7028 13
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IBM System Networking RackSwitch G7028 14
This document was created or updated on January 16, 2014.
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IBM System Networking RackSwitch G7028 15
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