Nvidia Mellanox ConnectX-6 Dx Series - Page 12

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Feature Description
Mellanox adapters comply with the following IEEE 802.3 standards:
200GbE / 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 802.3by 25 Gigabit Ethernet
– IEEE 802.3ae 10 Gigabit Ethernet
– IEEE 802.3ap based auto-negotiation and KR startup
– 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 PCI Express - stores and accesses Ethernet fabric connection information and packet data.
SPI Quad - includes 256Mbit SPI Quad Flash device (MX25L25645GXDI-08G device by
Macronix)
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(Available
only in QSFP cards).
Overlay
Networks
In order to better scale their networks, data center operators often create overlay networks that
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. Mellanox ConnectX-6 Dx
effectively addresses this by providing advanced NVGRE and VXLAN hardware offloading engines
that encapsulate and de-capsulate the overlay protocol.
RDMA
overConve
rged
Ethernet
(RoCE)
Mellanox ConnectX-6 Dx, utilizing RoCE (RDMA over Converged Ethernet) technology, delivers
low-latency and high-performance over Band and Ethernet networks. Leveraging data center
bridging (DCB) capabilities as well as Mellanox ConnectX-6 Dx advanced congestion control
hardware mechanisms, RoCE provides efficient low-latency RDMA services over Layer 2 and
Layer 3 networks.
Mellanox
PeerDirect
®
Mellanox PeerDirect® communication provides high-efficiency RDMA access by eliminating
unnecessary internal data copies between components on the PCIe bus (for example, from GPU to
CPU), and therefore significantly reduces application run time. Mellanox ConnectX-6 Dx advanced
acceleration technology enables higher cluster efficiency and scalability to tens of thousands of
nodes.
CPU
Offload
Adapter functionality enabling reduced CPU overhead allowing more available CPU for
computation tasks.
Open vSwitch (OVS) offload using ASAP
2
- Accelerated Switch and Packet
• Flexible match-action flow tables
• Tunnelingencapsulation / decapsulation
Quality of
Service
(QoS)
Support for port-based Quality of Service enabling various application requirements for latency
and SLA.
Hardware-
based I/
OVirtualiza
tion
Mellanox ConnectX-6 Dx provides dedicated adapter resources and guaranteed isolation and
protection for virtual machines within the server.