Connettività di rete
Schede di rete Intel® per server
Advanced Driver Settings for Intel® Ethernet 10 Gigabit Server Adapters

The settings listed in the "Advanced" tab enable you to customize how the adapter handles QoS packet tagging, Jumbo Frames, Offloading, and other capabilities.

This page does not apply to adapters that have PRO/10GbE in their name. For those adapters see Advanced Settings for Intel® PRO/10GbE Server Adapters.

Note
  • Some features might not be available depending on the operating system and the specific adapters installed.
  • Advanced tab layout and feature availability is different when Intel® PROSet for Windows Device Manager* is installed.
  • On screen help is available when Intel® PROSet for Windows Device Manager is installed.

Available settings :
Flow Control
Header Data Split
Interrupt Moderation
Interrupt Moderation Rate
IPv4 Checksum Offload
Jumbo Packet
Large Receive Offload
Large Send Offload (IPv4)
Large Send Offload (IPv6)
Locally Administered Address
Log Link State Event
Low Latency Interrupts
Offload TCP Segmentation
Priority & VLAN
Receive Buffers
Receive Side Scaling
Receive Side Scaling Queues
TCP Checksum Offload(IPv4)
TCP Checksum Offload(IPv6)
Transmit Buffers
UDP Checksum Offload (IPv4)
UDP Checksum Offload (IPv6)

Flow Control enables adapters to generate or respond to flow control frames, which help regulate network traffic. Flow control is configured under Performance Options Properties when Intel® PROSet for Windows Device Manager is installed.

A link partner can become overloaded if incoming frames arrive faster than the device can process them. Frames will be discarded until the overload condition passes. The flow control mechanism overcomes this problem and eliminates the risk of lost frames.

If an overload situation occurs, the device generates a flow control frame. This forces the transmitting link partner to stop transmitting before trying to retransmit.
Note For adapters to benefit from this feature, link partners must support flow control frames.
Default Rx & Tx Enabled
Range Disabled : No flow control.
Rx & Tx Enabled : The adapter generates and responds to flow control frames.
Rx Enabled : The adapter pauses transmission when it receives a flow control frame from a link partner.
Tx Enabled : The adapter generates a flow control frame when its receive queue reaches a predefined limit.

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Header Data Split enables the adapter to split the header information from an incoming packet so the CPU does not have to process the whole packet. This splitting action reduces CPU utilization.

OS

Windows Server 2008*

Default

Enabled

Range

Disabled, Enabled

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Interrupt Moderation allows the adapter to moderate interrupts.

When a packet arrives the adapter generates an interrupt, allowing the driver to handle the packet. At greater link speeds, more interrupts are created, and CPU utilization also increases. This results in poor system performance. When you enable Interrupt Moderation, the interrupt rate is lower, and the result is better system performance.

OS

Windows Server 2008

Default

Enabled

Range

Disabled, Enabled

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Interrupt Moderation Rate sets the rate at which the controller moderates or delays the generation of interrupts to optimize network throughput and CPU utilization. The default setting (Adaptive) adjusts the interrupt rates dynamically depending on traffic type and network usage. Choosing a different setting can improve network and system performance in certain configurations. Interrupt Moderation Rate is configured under Performance Options Properties when Intel® PROSet for Windows Device Manager is installed.

Without interrupt moderation, CPU utilization increases at higher data rates because the system must handle a larger number of interrupts. Interrupt moderation causes the network driver to accumulate interrupts and send one interrupt rather than a series of interrupts. At higher data rates, a high interrupt moderation setting may improve system performance. At low data rates, a lower interrupt moderation setting is preferred as delayed interrupts cause latency.

Default

Adaptive

Range

Adaptive, High, Low, Medium, Off

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IPv4 Checksum Offload enables the adapter to verify the TCP/IP checksum on received packets (Rx) and compute checksum on transmitted packets (Tx). IPv4 Checksum Offload is configured under TCP/IP Offloading Options properties when Intel® PROSet for Windows Device Manager is installed. Enabling this feature can improve TCP/IP performance and reduce CPU utilization. With Offloading disabled, the operating system calculates and verifies the TCP/IP checksum.

Default

RX & Tx Enabled

Range

Disabled, Rx & Tx Enabled, Rx Enabled, Tx Enabled

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Jumbo Packet enables Jumbo Packet capability for TCP/IP packets. When large packets make up the majority of traffic and more latency can be tolerated, Jumbo Packets can reduce CPU utilization and improve wire efficiency. The standard Ethernet frame size is 1514 bytes, while Jumbo frames can contain 4088 or 9014 bytes. Available settings vary depending on the specific adapter.

Enable Jumbo Packets only if devices across the network support them and are configured to use the same frame size. When setting up Jumbo Frames on other network devices, be aware that network devices calculate Jumbo Frame sizes differently. Some devices include the header information in the frame size while others do not.
Note Intel adapters do not include header information in the frame size.
Default Disabled
Range Disabled (1514), 4088, and 9014 bytes. (Set the switch 4 bytes higher for CRC, plus 4 bytes if using VLANs.or QoS packet tagging.)

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Large Receive Offload (IPv4) sets the adapter to offload the task of segmenting TCP messages into valid Ethernet frames. Large Receive Offload is configured under TCP/IP Offloading Options properties when Intel® PROSet for Windows Device Manager is installed.

Because the adapter hardware can complete data segmentation much faster than operating system software, this feature cam improve transmission performance. The adapter also uses fewer CPU resources.

OS

Windows Server 2008

Default

Enabled

Range

Disabled, Enabled

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Large Send Offload (IPv4) and Large Send Offload (IPv6) enable the adapter to offload the task of segmenting TCP messages into valid Ethernet frames.

Because the adapter hardware can complete data segmentation much faster than operating system software, this feature can improve transmission performance. The adapter also uses fewer CPU resources.

OS

Windows Server 2008

Default

Enabled

Range

Disabled, Enabled

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Locally Administered Address overrides the virtual, user-assigned MAC address of the adapter. This setting does not override the adapter's physical MAC address. To enter a new network address, type a 12-digit hexadecimal number in this box.

Default None
Range 0000 0000 0001 - FFFF FFFF FFFD
Exceptions:
  • Do not use a multicast address (Least Significant Bit of the high byte = 1).
  • Do not use all zeros or all Fs.
Note Present Setting: Reverts to original network address of the adapter.
Note

In a team, Intel® PROSet uses either:

  • The team LAA if the team has an LAA configured, or
  • The permanent MAC address of the main adapter, if the team does not have an LAA configure
  • Intel PROSet does not use the adapter LAA if the adapter is the main adapter in a team and the team has an LAA.

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Log Link State Event enables the logging of the following link state changes to the system event log.

  • LINK_UP_CHANGE
    Indicates that the adapter has established link.
  • LINK_DOWN_CHANGE
    Indicates that the adapter has lost link.
  • LINK_DUPLEX_MISMATCH
    Indicates a mismatch in duplex between the adapter and the link partner
Troubleshooting Tip : To investigate connection problems, click the Link Speed tab and run diagnostics. The Link Speed tab and diagnostics are only available when Intel® PROSet for Windows Device Manager is installed.

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Low Latency Interrupts option enables adapters to bypass interrupt moderation and generate an interrupt when certain TCP packets arrive. The system can then handle the packet faster. Certain applications have faster access to network data because of the reduced data latency.

Intel PROSet for Windows Device Manager must be installed to enable configuration of Low Latency Interrupts. Low Latency Interrupt properties are configurable in the Performance Options properties. To use Low Latency Interrupts select the Use Low Latency Interrupts checkbox and choose one of these options:
  • Use for packets with TCP PSH flag: Any incoming packet with the TCP PSH flag triggers an immediate interrupt. The sending device sets the PSH flag.
  • Use for these TCP ports: Every packet received on the specified ports triggers an immediate interrupt. Up to 8 ports can be specified.
Note If Low Latency Interrupts option is enabled, system CPU utilization can increase.

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Offload TCP Segmentation enables the adapter to offload the task of segmenting TCP messages into valid Ethernet frames. Offload TCP Segmentation is configured under TCP/IP Offloading Options properties when Intel® PROSet for Windows Device Manager is installed.

Because the adapter hardware completes data segmentation much faster than operating system software, this feature can improve transmission performance. The adapter also uses fewer CPU resources.
Default On
Range Off, On

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Priority & VLAN enables sending and receiving of IEEE 802.3ac tagged frames, which include:

  • 802.1p QoS (Quality of Service) tags for priority-tagged packets
  • 802.1Q tags for VLANs
When this feature is enabled, tagged packets use the queue settings defined by the operating system Priority Level Definition. Priority & VLAN is automatically enabled when you set up a VLAN on the VLAN tab. You cannot disable tagging because tagging is required for VLANs.
Note Intel® PROSet for Windows Device Manager and Advanced Networking Services (ANS) must be installed to configure VLANs on Intel® network adapters.

Default

Priority & VLAN Enabled

Range

Priority & VLAN Disabled, Priority & VLAN Enabled, Priority Enabled, VLAN Enabled

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Receive Buffers sets the number of Receive Buffers used by the adapter when copying data to memory. Increasing this value can enhance receive performance, but consumes system memory. Receive Buffers are configured under Performance Options Properties when Intel® PROSet for Windows Device Manager is installed.

You might choose to increase the number of Receive Buffers if you notice a significant decrease in the performance of received traffic. If receive performance is not an issue, use the default setting.

Default

512

Range

128 - 2048 in increments of 64
See Parameter Talk: TX and RX descriptors for more information.

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Receive Side Scaling (RSS) enables processing for a TCP connection across multiple processors or processor cores. If your adapter does not support RSS, or if your operating system does not support it, the RSS setting is not displayed.

Default

Enabled

Range

Disabled, Enabled

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Receive Side Scaling Queues allocates queue space to buffer transactions between the network adapter and processors. Configuration of queues is not supported on all adapters that support RSS. The number of queues supported varies depending on the adapter and operating system. Only settings allowed for your adapter and operating system are displayed.

Default 2 Queues
Range 1, 2, or 4 Queues
See the User Guide for more information on Receive Side Scaling.

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TCP Checksum Offload(IPv4) and TCP Checksum Offload(IPv6) enable the adapter to compute (Tx) or verify (Rx) the TCP checksum of packets. TCP Checksum Offload is configured under TCP/IP Offloading Options properties when Intel® PROSet for Windows Device Manager is installed. This feature can improve performance and reduce CPU utilization. With Offloading enabled, the adapter computes or verifies the checksum for the operating system.

OS

All for IPv4, Windows Server 2008 for IPv6

Default

Rx & Tx Enabled

Range

Disabled, Rx & Tx Enabled, Rx Enabled, Tx Enabled

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Transmit Buffers sets the number of Transmit Buffers used by the adapter when copying data to memory. Increasing this value can enhance transmission performance, but also consumes system memory. Transmit Buffers are configured under Performance Options properties when Intel® PROSet for Windows Device Manager is installed.

You can choose to increase the number of Transmit Buffers if you notice a significant decrease in the performance of transmitted traffic. If transmission performance is not an issue, use the default setting.

Default

512

Range

128 - 16384 in increments of 64
See Parameter Talk: TX and RX descriptors for more information.

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UDP Checksum Offload (IPv4) and UDP Checksum Offload (IPv6) enable the adapter to compute (Tx) or verify (Rx) the UDP checksum of packets. UDP Checksum Offload is configured under TCP/IP Offloading Options properties when Intel® PROSet for Windows Device Manager is installed. This feature can improve performance and reduce CPU utilization. With Offloading enabled, the adapter computes or verifies the checksum for the operating system.

Default

Rx & Tx Enabled

Range

Disabled, Rx & Tx Enabled, Rx Enabled, Tx Enabled

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Related topics
Jumbo Frames and Jumbo Packets Notes
Parameter Talk: TX and RX descriptors

This applies to:

Intel® 10 Gigabit AF DA Dual Port Server Adapter
Scheda di rete Intel® 10 Gigabit AT Server
Scheda di rete Intel® 10 Gigabit AT2 Server
Intel® 10 Gigabit CX4 Dual Port Server Adapter
Intel® 10 Gigabit XF LR Server Adapter
Intel® 10 Gigabit XF SR Dual Port Server Adapter
Intel® 10 Gigabit XF SR Server Adapter
Intel® Ethernet Converged Network Adapter X520 Series
Scheda di rete CNA (Converged Network Adapter) Intel® Ethernet X540-T1
Scheda di rete CNA (Converged Network Adapter) Intel® Ethernet X540-T2
Intel® Ethernet Converged Network Adapter X710 Series
Intel® Ethernet Converged Network Adapter XL710 Series
Scheda di rete Intel® Ethernet Server Serie X520
Scheda di rete Ethernet Intel® X520-DA2 per server
Scheda di rete Ethernet Intel® X520-LR1 per server
Scheda di rete Ethernet Intel® X520-SR1 per server
Scheda di rete Ethernet Intel® X520-SR2 per server
Scheda di rete Intel® Ethernet Server X520-T2
Solution ID: CS-029402
Last Modified: 17-Nov-2014
Date Created: 08-Jun-2008
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