Advanced settings for HP NC-Series Broadcom 1 GbE adapters

These advanced properties are available for HP NC-Series Broadcom 1 Gigabit Server Adapters running Windows Server 2003 and Windows Server 2003 x64. Each adapter property displays only if the property is supported by the selected adapter.

• 802.1p QoS Packet Tagging. Enables or disables IEEE 802.1p tagging to send network traffic with different priority levels.
  • Default = Disabled
  • Range = Disabled; Enabled
• Wake Up Capabilities. Determines the type of packets that will cause the adapter to wake up the system.
  • Default = Both
  • Range = None; Magic Packet; Wake Up Frame; Both
• Flow Control. The Flow Control property allows the user to enable or disable the receipt or transmission of PAUSE frames. PAUSE frames enable the adapter and the switch to control the transmit rate. The side that is receiving the PAUSE frame will momentarily stop transmitting. The recommended selection is Auto and it is the default setting. To disable Flow Control, select Disable from the Value list on the Advanced tab.
  • Auto. (Default) Auto detect flow control
  • Disable. PAUSE frame receipt and transmission is disabled
  • Tx PAUSE. PAUSE frame transmission is enabled
  • Rx PAUSE. PAUSE frame receipt is enabled
  • Rx/Tx PAUSE. PAUSE frame receipt and transmission is enabled
• Maximum Frame Size. Specifies the maximum number of bytes in a single packet. Larger frames can increase throughput and decrease CPU use by putting more data in each packet, thereby sending out fewer packets. This is equivalent to Jumbo Frames and must comply with switch limitations.
  • Default = 1514
  • Range = 1324, 1514, 4088, and 9014
• Tx IP Checksum Offload. Offloads the task of computing the checksum for outgoing IP packets, thereby improving performance.
  • Default = Enabled
  • Range = Disabled; Enabled
• Rx IP Checksum Offload. Offloads the task of computing the checksum for incoming IP packets, thereby improving performance.
  • Default = Enabled
  • Range = Disabled; Enabled
• Tx TCP Checksum Offload. Offloads the task of computing the checksum for outgoing TCP or UDP packets, thereby improving performance.
  • Default = Enabled
  • Range = Disabled; Enabled
• Rx TCP Checksum Offload. Offloads the task of computing the checksum for incoming TCP or UDP packets, thereby improving performance.
  • Default = Enabled
  • Range = Disabled; Enabled
• Large Send Offload. Enables offloading of large TCP packets.
  • Default = Enabled
  • Range = Disabled; Enabled
• WOL Speed. Specifies the speed at which the adapter connects to the network during Wake-on-LAN mode.
  • Default = Auto
  • Range = Auto; 10 Mb; 100 Mb
• Ethernet@WireSpeed. Enables linking at 100 Mbps when using a cable that does not support Gigabit speed.
  • Default = Enabled
  • Range = Disabled; Enabled
• Number of Tx Descriptors. Determines how many resources are allocated to transmit packets.
  • Default = 750
  • Range = 50-5000
• Number of RX Descriptors. Determines how many resources are allocated to receive packets. Increasing receive descriptors can increase performance, which also increases the amount of system memory used by the driver. So, if too few receive descriptors are used, performance suffers and if too many receive descriptors are used the driver unnecessarily consumes memory resources.
  • Default = 200
  • Range = 100-512

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