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Adapter configurations 32
Windows Server 2003 and Windows Server 2003 x64
configurations
Although the default values should be appropriate in most cases, you may change any of the available
options to meet the requirements of your specific system. It is recommended that you use the HP Network
Configuration Utility to update HP NC-Series adapter properties. However, if you choose to update the
properties using the operating system's Device Manager, the following lists the properties that are
available for your HP adapter. The properties that are available through the HP NCU will differ. See the
online help file for NCU adapter property information.
HP NC-Series Broadcom and Multifunction adapter properties
• 802.1p QoS Packet Tagging. The 802.1p QoS parameter is a standard that enables Quality of
Service. This property is disabled by default. To change this property, select Enable or Disable.
• Checksum Offload. Normally the Checksum Offload function is computed by the protocol stack. By
selecting one of the Checksum Offload properties, the checksum can be computed by the Gigabit
Ethernet Adapter.
To enable one of the Checksum Offload properties select the property from the Value list on the
Advanced tab.
o None. Disables checksum offloading
o Rx TCP/IP Checksum. Enables receive TCP, IP, and UDP checksum offloading
o Tx TCP/IP Checksum. Enables transmit TCP, IP, and UDP checksum offloading
o Tx/Rx TCP/IP Checksum. (Default) Enables transmit and receive TCP, IP, and UDP checksum
offloading
• 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.
o Auto. (Default) Auto detect flow control
o Disable. PAUSE frame receipt and transmission is disabled
o Tx PAUSE. PAUSE frame transmission is enabled
o Rx PAUSE. PAUSE frame receipt is enabled
o Rx/Tx PAUSE. PAUSE frame receipt and transmission is enabled
• Large Send Offload. Normally, the TCP segmentation is performed by the protocol stack. By
enabling the Large Send Offload property, the TCP segmentation can be performed by the Gigabit
Ethernet Adapter. To enable the Large Send Offload property, select Enable from the Value drop-
down menu on the Advanced tab.
o Disable. Disables large send offloading
o Enable. Enables large send offloading
• Locally Administered Address. Specifies the user-defined MAC Address of the adapter, which
overrides the burned-in MAC Address. This box is disabled if the selected adapter has been teamed.
o Default = Not Present
o Range = Value; Not Present