25GbE SFP28 Specifications

• Ethernet

   - 25GbE / 10GbE / 1GbE

   - IEEE 802.3ad, 802.1AX Link Aggregation

   - IEEE 802.1Q, 802.1P VLAN tags and priority

   - IEEE 1588v2

   - Jumbo frames support (9.6KB)

• Enhanced Features:

   - Hardware-based reliable transport

   - Collective operations offloads

   - Vector collective operations offloads

   - 64/66 encoding

   - Dynamically Connected transport (DCT)

   - Enhanced Atomic operations

   - Support for MSI/MSI-X mechanisms

• Storage Offloads:

   - RAID offload - erasure coding (Reed-Solomon) offload

• CPU Offload Features:

   - RDMA over Converged Ethernet (RoCE)

   - TCP/UDP/IP stateless offload

   - LSO, LRO, checksum offload

   - RSS (can be done on encapsulated packet), TSS,

     HDS, VLAN insertion/stripping, Receive flow

     steering

   - Intelligent interrupt coalescence

• 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

   - Multiple queues per virtual machine

   - VMware NetQueue support

• Virtualization:

   - SR-IOV: Up to 256 Virtual Functions

   - SR-IOV: Up to 16 Physical Functions per port

• Management Features:

   - Remote boot over iSCSI

   - PXE and UEFI

• OS Support:

   - RHEL/CentOS

   - Windows

   - FreeBSD

   - VMware