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Chapter 5: Setting Advanced Properties
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5. Click OK.
6. If prompted to restart your computer, click Yes.
Although it is not necessary to reboot the system for new adapter
properties to take effect, rebooting is recommended to reinitialize all
registers.
7. Verify that the port LED operates as described in “LEDs” on page 18.
Checksum
Offload
Usually, the Checksum Offload function is computed by the protocol stack.
By selecting one of the Checksum Offload properties, the adapter can
compute the checksum.
To change the Checksum Offload setting, do the following:
1. For Windows Server 2003 and Windows XP systems, access the
System Properties Dialog Box. See “Modifying Configuration
Properties” on page 39.
For Windows 2008 R2, Windows 7, and Windows Vista systems,
access the Device Manger for your operating system:
To access the Device Manager window in Windows 2008 R2 or
Windows 7, see “Selecting the Device Manager in Windows 2008
R2 and Windows 7” on page 44.
To access the Windows Vista Device Manager, see “Selecting the
Device Manager in Windows Vista” on page 46.
2. Click the Advanced tab.
The Advanced tab is shown in Figure 21 on page 56.
3. From the P
roperty list under the Advanced tab, select TCP/UDP
Checksum Offload v4 or TCP/UDP Checksum Offload v6.
4. From the V
alue list on the Advanced tab, select one of the following:
None - Disables checksum offloading.
Rx TCP/IP Checksum - Enables receive TCP, IP, and UDP
checksum offloading.
Tx TCP/IP Checksum - Enables transmit TCP, IP, and UDP
checksum offloading.
Tx/Rx TCP/IP Checksum (default) - Enables transmit and receive
TCP, IP, and UDP checksum offloading.