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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.
1U rack mount
•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
•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.
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.
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
•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
Three 2+1 redundant fixed fans. Rear (non-port side) to front (port side) airflow.
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).
SFP/SFP+ transceivers, SFP+ DAC cables.
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).
Industry standard command line interface (isCLI); SNMP v1 and v3. Optional Lenovo XClarity for discovery, inventory, monitoring and events.
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).
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).
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
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).
Lenovo Press - https://lenovopress.com/tips1268-lenovo-rackswitch-g7028