Users Guide
1–Product Overview
Features
2 AH0054602-00 M
 Generic segment offload (GSO)
 Large receive offload (LRO)
 Receive segment coalescing (RSC)
 Microsoft
®
 dynamic virtual machine queue (VMQ), and Linux 
Multiqueue
 Adaptive interrupts: 
 Transmit/receive side scaling (TSS/RSS)
 Stateless offloads for Network Virtualization using Generic Routing 
Encapsulation (NVGRE) and virtual LAN (VXLAN) L2/L3 GRE 
tunneled traffic
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 Manageability:
 System management bus (SMB) controller 
 Advanced Configuration and Power Interface (ACPI) 1.1a compliant 
(multiple power modes)
 Network controller-sideband interface (NC-SI) support
 Advanced network features:
 Jumbo frames (up to 9,600 bytes). The OS and the link partner must 
support jumbo frames. 
 Virtual LANs (VLANs)
 Flow control (IEEE Std 802.3x) 
 Logical link control (IEEE Std 802.2) 
 High-speed on-chip reduced instruction set computer (RISC) processor 
 Integrated 96KB frame buffer memory (not applicable to all models)
 1,024 classification filters (not applicable to all models)
 Support for multicast addresses through 128-bit hashing hardware function 
 Support for VMDirectPath I/O
FastLinQ 41xxx Series Adapters support VMDirectPath I/O in Linux and 
ESX environments. VMDirectPath I/O is not supported in Windows 
environments.
FastLinQ 41xxx Series Adapters can be assigned to virtual machines for 
PCI pass-through operation. However, due to function level dependencies, 
all PCIe functions associated with an adapter must be assigned to the same 
virtual machine. Sharing PCIe functions across the hypervisor and/or one or 
more virtual machines is not supported.
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This feature requires OS or Hypervisor support to use the offloads.










