Features And Benefits - Nvidia MCX545B-CCUN User Manual

Features and Benefits


This section describes hardware features and capabilities. Please refer to the relevant driver
and/or firmware release notes for feature availability.
Feature
PCI Express (PCIe)
Up to 25 Gigabit Ethernet
Memory
Overlay Networks
Uses PCIe Gen 3.0 (8GT/s) and Gen 4.0 (16GT/s) through an x8 or x16
edge connector. Gen 1.1 and 2.0 compatible.
Mellanox adapters comply with the following IEEE 802.3 standards:
• 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
• 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)
• SPI Quad - includes 128Mbit SPI Quad Flash device
(W25Q128FVSIG device by ST Microelectronics).
• VPD EEPROM - The EEPROM capacity is 128Kbit.
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. ConnectX-5 effectively addresses this
by providing advanced NVGRE and VXLAN hardware offloading
engines that encapsulate and de-capsulate the overlay protocol.
Description
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