Суич Lenovo RackSwitch G7028, 24x Gigabit Ethernet RJ-45, 4x SFP/SFP+

Attribute Specification
Form factor:
• 1U rack mount

Ports
• 24x Gigabit Ethernet (GbE) RJ-45 fixed ports
• 4x SFP/SFP+ ports

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), IPv4/IPv6 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

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).

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).



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