Chapter 5: Setting Advanced Properties

Checksum Offload

ˆ100 Mb Full

ˆ100 Mb Half

ˆAuto

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.

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:

ˆTo 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.

ˆTo 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 Property list under the Advanced tab, select TCP/UDP Checksum Offload v4 or TCP/UDP Checksum Offload v6.

4.From the Value list on the Advanced tab, select one of the following:

ˆNone - Disables checksum offloading.

ˆRx TCP/IP Checksum - Enables receive TCP, IP, and UDP checksum offloading.

ˆTx TCP/IP Checksum - Enables transmit TCP, IP, and UDP checksum offloading.

ˆTx/Rx TCP/IP Checksum (default) - Enables transmit and receive TCP, IP, and UDP checksum offloading.

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Allied Telesis AT-2972T/2, AT-2916LX10/LC-901, AT-2916SX, AT-2931SX, AT-2972SX/2, AT-2972LX10/LC-901 manual Checksum Offload

AT-2916LX10/LC-901, AT-2972SX, AT-2972SX/2, AT-2972LX10/LC-901, AT-2916SX specifications

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