Specifications

• Mfr Part Number: MCX4121A-ACAT
  
• Features:
  • 1/10/25/40/50Gb/s speeds
    
  • Single and dual-port options
  • Erasure Coding offload
  • Virtualization
  • Low latency RDMA over Converged Ethernet (RoCE)
    
  • CPU offloading of transport operations
    
  • Application offloading
  • Mellanox PeerDirect communication acceleration
    
  • Hardware offloads for NVGRE, VXLAN and GENEVE encapsulated traffic
    
  • End-to-end QoS and congestion control
    
  • Hardware-based I/O virtualization
    
  • RoHS compliant
    
  • ODCC compatible
    
• Data Transfer Rates: Dual-Port 25GbE Ethernet
  
• Connector Type: SFP28/SFP+/SFP
  
• PCI: PCIe3.0 x8
  
• Enhanced Features:
  • 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
    
• Ethernet:
  • 50GbE / 40GbE / 25GbE / 10GbE / 1GbE
    
  • IEEE 802.3bj, 802.3bm 100 Gigabit Ethernet
    
  • 25G Ethernet Consortium 25, 50 Gigabit Ethernet
    
  • IEEE 802.3ba 40 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)
    
  • IEEE 802.3ad, 802.1AX Link Aggregation
  • IEEE 802.1Q, 802.1P VLAN tags and priority
  • IEEE 802.1Qaz (ETS)
  • IEEE 802.1Qbb (PFC)
  • IEEE 802.1Qbg
  • IEEE 1588v2
  • Jumbo frame support (9.6KB)
    
• Storage Offloads: RAID offload - erasure coding (ReedSolomon) offload
  
• Overlay Networks:
  • Stateless offloads for overlay networks and tunneling protocols
    
  • Hardware offload of encapsulation and decapsulation of NVGRE and VXLAN overlay networks
    
• Hardware-Based I/O Virtualization:
  • Single Root IOV
    
  • Multi-function per port
  • Address translation and protection
  • Multiple queues per virtual machine
    
  • Enhanced QoS for vNICs
    
  • VMware NetQueue support
    
• CPU Offloads:
  • 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
    
• Remote Boot:
  • Remote boot over Ethernet
    
  • Remote boot over iSCSI
  • PXE and UEFI
    
• Protocol Support:
  • 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
    
• PCI Express Interface:
  • 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
    
• Connectivity:
  • Interoperable with 1/10/25/40/50Gb Ethernet switches
    
  • Passive copper cable with ESD protection
    
  • Powered connectors for optical and active cable support
    
• Operating System:
  • RHEL/CentOS
    
  • Windows
  • FreeBSD
    
  • VMware
    
  • OpenFabrics Enterprise Distribution (OFED)
    
  • OpenFabrics Windows Distribution (WinOF-2)
    
• Dimensions: 14.2 x 6.9 cm (w/o Brackets)
  
• Low Profile Design
  
• Image is for Representation Only