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Mellanox ConnectX-4 Lx EN Network Adapter MCX4121A-ACAT
| FEATURES | |
| Ethernet | Enhanced Features |
| – 25GbE / 10GbE – 25G Ethernet Consortium 25 Gigabit Ethernet – IEEE 802.3ae 10 Gigabit Ethernet – IEEE 802.3az Energy Efficient Ethernet – IEEE 802.3ap based auto-negotiation and KR startup – Proprietary Ethernet protocols (20/40GBASE-R2, 50GBASE-R4) – EEE 802.3ad, 802.1AX Link Aggregation – IEEE 802.1Q, 802.1P VLAN tags and priority – EEE 802.1Qaz (ETS) – IEEE 802.1Qbb (PFC) – IEEE 802.1Qbg – IEEE 1588v2 – Jumbo frame support (9.6KB) |
– Hardware-based reliable transport – Collective operations offloads – Vector collective operations offloads – PeerDirect RDMA (aka GPUDirect® communication acceleration – 64/66 encoding – Extended Reliable Connected transport (XRC) – Dynamically Connected transport (DCT) – Enhanced Atomic operations – Advanced memory mapping support, allowing user mode registration and remapping of memory (UMR) – On demand paging (ODP) – registration free RDMA memory access |
| CPU Offloads | Virtualization |
| – RDMA over Converged Ethernet (RoCE) – TCP/UDP/IP stateless offload – LSO, LRO, checksum offload – RSS (can be done on encapsulated packet), TSS, VLAN insertion/stripping, Receive flow steering – Intelligent interrupt coalescence |
– SR-IOV: Up to 256 Virtual Functions – SR-IOV: Up to 16 Physical Functions per port – Virtualization hierarchies (e.g. NPAR) • Virtualizing Physical Functions on a physical port • SR-IOV on every Physical Function – 1K ingress and egress QoS levels – Guaranteed QoS for VMs |
| Storage Offloads | Remote Boot |
| – RAID offload – erasure coding (ReedSolomon) offload | – Remote boot over Ethernet – Remote boot over iSCSI – PXE and UEFI |
| Protocol Support | Overlay Networks |
| – OpenMPI, IBM PE, OSU MPI (MVAPICH/2), Intel MPI – Platform MPI, UPC, Open SHMEM – TCP/UDP, MPLS, VxLAN, NVGRE, GENEVE – iSER, NFS RDMA, SMB Direct – uDAPL |
– Stateless offloads for overlay networks and tunneling protocols – Hardware offload of encapsulation and decapsulation of NVGRE and VXLAN overlay networks |
| Management and Control Interfaces | Hardware-Based I/O Virtualization |
| – NC-SI over MCTP over SMBus and NC-SI over MCTP over PCIe – Baseboard Management Controller interface – SDN management interface for managing the eSwitch – I2C interface for device control and configuration – General Purpose I/O pins – SPI interface to Flash – JTAG IEEE 1149.1 and IEEE 1149.6 |
– Single Root IOV – Multi-function per port – Address translation and protection – Multiple queues per virtual machine – Enhanced QoS for vNICs – VMware NetQueue support |
| Compatibility | |
| PCI Express Interface | Connectivity |
| – PCIe Gen 3.0 compliant, 1.1 and 2.0 compatible – 2.5, 5.0, or 8.0GT/s link rate x8 – Auto-negotiates to x8, x4, x2, or x1 – Support for MSI/MSI-X mechanisms |
– Interoperable with 10/25Gb Ethernet switches – Passive copper cable with ESD protection – Powered connectors fo |
| Tested Modules & Cables | Operating Systems/Distributions |
| – Cisco Optical Module SFP-25G-SR-S – Cisco Optical Module SFP-10G-SR – Cisco Optical Module SFP-10G-LR Mellanox recommends Mellanox cables & modules. For additional information on tested modules, go to: http://www.mellanox.com/page/firmware_table_ConnectX4LxEN a. Select OPN MCX4121A-ACAT b. Select PSID c. Select “Release Notes” under Download/Documentation |
RHEL/CentOS – Windows – FreeBSD – VMware – OpenFabrics Enterprise Distribution (OFED) – OpenFabrics Windows Distribution (WinOF-2) |
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