System Specifications - Lenovo G7028 Product Manual

System specifications

The following table lists the RackSwitch G7028 system specifications.
Table 1. System specifications
Component Specification
Form factor 1U rack mount
Ports
SFP/SFP+ media 10 Gb Ethernet SFP+:
types
1/10 Gb Ethernet SFP+:
1 Gb Ethernet SFP:
Port speeds
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:
Scalability
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 1x 10/100/1000 Mb Ethernet port (RJ-45); 1x RS-232 port (RJ-45); 1x USB port (for additional
ports firmware, log, and configuration files storage).
Management Industry standard command line interface (isCLI); SNMP v1 and v3. Optional Lenovo XClarity
interfaces for discovery, inventory, monitoring and events.
Lenovo RackSwitch G7028
24x Gigabit Ethernet (GbE) RJ-45 fixed ports
4x SFP/SFP+ ports
10 GbE short-range (SR) SFP+ transceivers
10 GbE long-range (LR) SFP+ transceivers
10 GbE SFP+ direct attach copper (DAC) cables
1/10 GbE SX/SR SFP+ transceivers
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
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
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