Recommended HPE Ethernet Switches for RDMA-enabled Fabrics
■The use of remote direct memory access (RDMA) in networks is becoming more common in the data center for low-latency connectivity. Customers have a choice of deploying either RDMA over Converged Ethernet (RoCE) or Internet wide area RDMA protocol (iWARP) RDMA protocols across the network.
■While all the adapters listed in the Products Affected table support both RoCE and iWARP, customers often ask which switches support RDMA. This is a valid question. To get the benefit of low-latency RDMA, enterprise-class switches are required in the network. This application note outlines the recommended Products AffectedHPE® ModelHPE Part NumberHPE Ethernet 10Gb 521T Adapter867707-B21HPE Ethernet 10Gb 524SFP+ AdapterP08446-B21HPE Ethernet 10/25Gb 621SFP28 Adapter867328-B21HPE Ethernet 10/25Gb 622FLR-SFP28 Adapter867334-B21HPE CN1200R-T 10GBase-T CNAQ0F26AHPE CN1300R 10/25GbE CNAQ0F09AHPE Synergy 4820C 10/20/25Gb CNA876449-B21HPE Synergy 6820C 25/50Gb CNAP02054-B21HPE Synergy 6810C 25/50Gb Ethernet Adapter867322-B21HPE Ethernet 10Gb 2-port Base-T QL41132HLRJ AdapterP08437-B21HPE Ethernet 10Gb 2-port BASE-T QL41132HQRJ OCP3 AdapterP10103-B21HPE Ethernet 10Gb 2-port SFP+ QL41132HLCU AdapterP21933-B21HPE Ethernet 10Gb 2-port SFP+ QL41132HQCU OCP3 AdapterP08452-B21HPE Ethernet 10GbE 4-port SFP+ QL41134HLCU AdapterP10094-B21HPE Ethernet 10/25Gb 2-port SFP28 QL41232HLCU AdapterP22702-B21HPE Ethernet 10/25Gb 2-port SFP28 QL41232HQCU OCP3 AdapterP10118-B21
TD-000130 Rev. 32enterprise-class switches from HPE that provide the best performance for an RDMA fabric running either 10-Gigabit Ethernet (GbE), 25GbE, or 50GbE bandwidths and either RoCE or iWARP RDMA protocols.
■RoCE needs a lossless network, which can require extra switch features, such as data center bridging (DCB) priority flow control (PFC)/enhanced transmission selection (ETS)/congestion notification (CN) to function properly over lossy Ethernet networks. The iWARP protocol does not need DCB and can function on most 10GBASE-T and 10G SFP+/25G SFP28/100G QSFP28 switches using just the TCP protocol stack.
867707-B21 、 P08446-B21 、 867328-B21 、 867334-B21 、 Q0F26A 、 Q0F09A 、 876449-B21 、 P02054-B21 、 867322-B21 、 P08437-B21 、 P10103-B21 、 P21933-B21 、 P08452-B21 、 P10094-B21 、 P22702-B21 、 P10118-B21 、 3810M 、 CX8320 、 CX8325 、 CX8360 、 CX8400 、 5700 、 5710 、 5800 、 5820 、 5920 、 5930 、 5950 、 11900 、 12900E 、 5900 、 5940 、 5945 、 5980 、 1950 12XGT 、 SN8500C 、 SN2010M 、 SN2100M 、 SN2410M 、 SN2700M 、 SN3700M 、 SN3800M |
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Application note & Design Guide |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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December 4, 2020 |
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Rev. 3 |
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TD-000130 |
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198 KB |
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