Intel 10 Gigabit AT Ethernet Server Adapter, Руководство пользователя, Страница: 38 / 165

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
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Jumbo frames are not supported in multi-vendor team configurations.
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Supported protocols are limited to IP (TCP, UDP).
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Jumbo frames require compatible switch connections that forward Jumbo Frames. Contact your
switch vendor for more information.
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When standard-sized Ethernet frames (64 to 1518 bytes) are used, there is no benefit to configuring
Jumbo Frames.
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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.
Default Disabled
Range Disabled (1514), 4088, or 9014 bytes. (Set the switch 4 bytes higher for CRC, plus 4 bytes if
using VLANs.)
NOTES:
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Jumbo Packets are supported at 10 Gbps and 1 Gbps only. Using Jumbo Packets at 10 or
100 Mbps may result in poor performance or loss of link.
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End-to-end hardware must support this capability; otherwise, packets will be dropped.
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Intel adapters that support Jumbo Packets have a frame size limit of 9238 bytes, with a
corresponding MTU size limit of 9216 bytes.
Large Send Offload (IPv4 and IPv6)
Sets the adapter to offload the task of segmenting TCP messages into valid Ethernet frames. The maximum
frame size limit for large send offload is set to 64,000 bytes.
Since the adapter hardware is able to complete data segmentation much faster than operating system
software, this feature may improve transmission performance. In addition, the adapter uses fewer CPU
resources.
Default Enabled
Range
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Enabled
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Disabled