User Guide
Table Of Contents
- Intel® Ethernet Adapters and Devices User Guide
- Overview
- Installing the Adapter
- Microsoft* Windows* Installation and Configuration
- Intel Network Drivers for DOS
- Data Center Bridging (DCB) for Intel® Network Connections
- Remote Boot
- Troubleshooting
- Known Issues
- Regulatory Compliance Statements
- FCC Class A Products
- FCC Class B Products
- Safety Compliance
- EMC Compliance – The following standards may apply:
- Regulatory Compliance Markings
- FCC Class A User Information
- FCC Class B User Information
- EU WEEE Logo
- Manufacturer Declaration European Community
- China RoHS Declaration
- Class 1 Laser Products
- End-of-Life / Product Recycling
- Customer Support
- Legal Disclaimers
l Medium
l Low
l Minimal
l Off
IPv4 Checksum Offload
This allows the adapter to compute the IPv4 checksum of incoming and outgoing packets. This feature
enhances IPv4 receive and transmit performance and reduces CPU utilization.
With Offloading off, the operating system verifies the IPv4 checksum.
With Offloading on, the adapter completes the verification for the operating system.
Default RX & TX Enabled
Range l Disabled
l RX Enabled
l TX Enabled
l RX & TX Enabled
Jumbo Frames
Enables or disables Jumbo Packet capability. The standard Ethernet frame size about 1514 bytes, while
Jumbo Packets are larger than this. Jumbo Packets can increase throughput and decrease CPU utilization.
However, additional latency may be introduced.
Enable Jumbo Packets only if ALL devices across the network support them and are configured to use the
same frame size. When setting up Jumbo Packets on other network devices, be aware that network devices
calculate Jumbo Packet sizes differently. Some devices include the frame size in the header information
while others do not. Intel adapters do not include frame size in the header information.
Jumbo Packets can be implemented simultaneously with VLANs and teaming. If a team contains one or more
non-Intel adapters, the Jumbo Packets feature for the team is not supported. Before adding a non-Intel adapter
to a team, make sure that you disable Jumbo Packets for all non-Intel adapters using the software shipped
with the adapter.
Restrictions
l Jumbo frames are not supported in multi-vendor team configurations.
l Supported protocols are limited to IP (TCP, UDP).
l Jumbo frames require compatible switch connections that forward Jumbo Frames. Contact your
switch vendor for more information.
l When standard-sized Ethernet frames (64 to 1518 bytes) are used, there is no benefit to configuring
Jumbo Frames.
l The Jumbo Packets setting on the switch must be set to at least 8 bytes larger than the adapter setting
for Microsoft Windows operating systems, and at least 22 bytes larger for all other operating systems.