Nvidia ConnectX-5 User Manual page 8

Feature
Up to 100
Gigabit NVIDIA adapters comply with the following IEEE 802.3 standards:
Ethernet • 100GbE/ 50GbE / 40GbE / 25GbE / 10GbE / 1GbE
• IEEE 802.3bj, 802.3bm 100 Gigabit Ethernet
• IEEE 802.3by, Ethernet Consortium25, 50 Gigabit Ethernet, supporting all FEC modes
• IEEE 802.3ba 40 Gigabit Ethernet
• IEEE 802.3ae 10 Gigabit 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 802.1Qau (QCN)
• Congestion Notification
• IEEE 802.1Qaz (ETS)
• IEEE 802.1Qbb (PFC)
• IEEE 802.1Qbg
• IEEE 1588v2
• Jumbo frame support (9.6KB)
Memory • SPI Quad - includes 128Mbit SPI Quad Flash device (W25Q128FVSIG device by ST
Microelectronics).
• FRU EEPROM - Stores the parameters and personality of the card. The EEPROM capacity is
128Kbit. FRU I2C address is (0x50) and is accessible through the PCIe SMBus.
Address 0x58 is reserved.)
Overlay In order to better scale their networks, data center operators often create overlay networks that
Networks carry traffic from individual virtual machines over logical tunnels in encapsulated formats such
as NVGRE and VXLAN. While this solves network scalability issues, it hides the TCP packet from
the hardware offloading engines, placing higher loads on the host CPU. ConnectX-5 effectively
addresses this by providing advanced NVGRE and VXLAN hardware offloading engines that
encapsulate and de-capsulate the overlay protocol.
RDMA and ConnectX-5, utilizing IBTA RDMA (Remote Data Memory Access) and RoCE (RDMA over Converged
RDMA over Ethernet) technology, delivers low-latency and high performance over Band and Ethernet
Converged networks. Leveraging data center bridging (DCB) capabilities as well as ConnectX-5 advanced
Ethernet congestion control hardware mechanisms, RoCE provides efficient low-latency RDMA services
(RoCE) over Layer 2 and Layer 3 networks.
NVIDIA PeerDirect™ communication provides high-efficiency RDMA access by eliminating unnecessary
PeerDirect internal data copies between components on the PCIe bus (for example, from GPU to CPU), and
™ therefore significantly reduces application run time. ConnectX-5 advanced acceleration
technology enables higher cluster efficiency and scalability to tens of thousands of nodes.
CPU Adapter functionality enabling reduced CPU overhead allowing more available CPU for
Offload computation tasks.
Open • Flexible match-action flow tables
VSwitch • Tunneling encapsulation/decapsulation
(OVS)
offload
using
ASAP2
Quality of Support for port-based Quality of Service enabling various application requirements for latency
Service and SLA.
(QoS)
Description
Note:
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