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AT-2900 Series Gigabit Ethernet Network Adapters Installation Guide
63
Large Send Offload Property
Normally, the protocol stack performs TCP segmentation. When you
enable the Large Send Offload property, the network adapter does the
TCP segmentation. There are several Large Send Offload properties to
choose from, depending on the TCP/IP version you are using on your PC.
You can select IPV4, IPV4 version 2, or IPv6 version 2. By default, the
Large Send Offload Property is disabled.
To change the Large Send Offload property, 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 45.
2. Click the Advanced tab.
The Advanced tab is shown in Figure 21 on page 56.
3. From the P
roperty list on the Advanced tab, select one of the following:
Large Send Offload (IPv4)
Large Send Offload v2 (IPv4)
Large Send Offload v2 (IPv6)
4. From the V
alue list on the Advanced tab, select one of the following:
Enable - Enables the Large Send Offload property.
Disable - Disables the Large Send Offload property. This is the
default.
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 16.