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System specifications
The following table lists the NE2572 RackSwitch system specifications.
Note: The supported hardware options and software features listed in this product guide are based on the
Lenovo Cloud Networking Operating System (CNOS) version 10.6.2. For details about specific CNOS
software releases that introduced support for certain hardware options and software features, refer to the
Release Notes for the particular software release that can be found at:
http://datacentersupport.lenovo.com/us/en/products/networking/rackswitch/NE2572/7159/downloads
Table 1. NE2572 RackSwitch system specifications
Component
Specification
Form factor
1U rack mount
Ports
Media types
10 Gb Ethernet SFP+:
25 Gb Ethernet SFP28:
40 Gb Ethernet QSFP+:
100 Gb Ethernet QSFP28:
Port speeds
Note: SFP28/SFP+ ports are combined into 12 consecutive 4-port groups: Ports 1-4, 5-8,
9-12, 13-16, 17-20, 21-24, 25-28, 29-32, 33-36, 37-40, 41-44, and 45-48. The SFP28/SFP+
port speed should be the same (10 Gbps or 25 Gbps) across all ports in the 4-port group.
Switching method Cut-through.
Lenovo ThinkSystem NE2572 RackSwitch
48x SFP28/SFP+ ports
6x QSFP28/QSFP+ ports
10 GbE short-range (SR) SFP+ transceivers
10 GbE long-range (LR) SFP+ transceivers
10 GbE extended-range (ER) SFP+ transceivers
10 GbE RJ-45 SFP+ transceivers
10 GbE SFP+ active optical cables
10 GbE SFP+ DAC cables
25 GbE SR SFP+ transceivers
25 GbE SFP+ active optical cables
25 GbE SFP+ DAC cables
40 GbE SR QSFP+ bi-directional (BiDi) transceivers
40 GbE short-range (SR4/iSR4/eSR4) QSFP+ transceivers
40 GbE long-range (LR4) QSFP+ transceivers
40 GbE QSFP+ to QSFP+ active optical cables
40 GbE QSFP+ to 4x 10 GbE SFP+ active optical breakout cables
40 GbE QSFP+ to QSFP+ DAC cables
40 GbE QSFP+ to 4x 10 GbE SFP+ DAC breakout cables
100 GbE short-range (SR4) QSFP28 transceivers
100 GbE long-range (LR4) QSFP28 transceivers
100 GbE QSFP28 to QSFP28 active optical cables
100 GbE QSFP28 to 4x 25 GbE SFP28 active optical breakout cables
100 GbE QSFP28 to QSFP28 DAC cables
100 GbE QSFP28 to 4x 25 GbE SFP28 DAC breakout cables
10 GbE SFP+ transceivers, DAC cables, and AOCs: 10 Gbps
25 GbE SFP+ transceivers, DAC cables, and AOCs: 25 Gbps
40 GbE QSFP+ SR BiDi/SR4/LR4 transceivers: 40 GbE
40 GbE QSFP+ iSR4/eSR4 transceivers, DAC cables, and AOCs: 40 GbE or 4x 10 GbE
100 GbE QSFP28 SR4 transceivers, DAC cables, and AOCs: 100 GbE or 4x 25 GbE
100 GbE QSFP28 LR4 transceivers: 100 GbE
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