3Com 3CR990 manual Click the Local Area Connection icon, Click Configure

Windows 2000 Offload Features 19

Enabling Offloads Windows 2000 provides the capability to individually enable or disable each of the four offload features. (The default setting for these features is enabled.)

NOTE: For users running the Beta 3 version of Microsoft Windows 2000, the Offload function must be globally enabled in Windows 2000 before individual offload features can be enabled or disabled.

See the readme.txt file in the root of the EtherCD for the latest information about enabling and disabling offload features in the Beta 3 version of Windows 2000.

To enable or disable individual Offload settings in Windows 2000:

1Click the My Network Places desktop icon.

The Network and Dial-up Connections screen appears.

2Click the Local Area Connection icon.

The Local Area Connection Properties screen appears.

3Click Configure.

The 3Com EtherLink 10/100 NIC with 3XP processor (3CR990-TX-9x) screen appears.

4Click the Advanced tab.

5Select Enable Offloads in the Property list box.

6Enter the hex number below for the desired offload state in the Value entry box.

7Close all open windows.

The following table shows the hex values for the offload functions:

NOTE: The default hex value is F: all offloads enabled.

Hex Value	Offload Function Enabled	Hex Value	Offload Function Enabled
0	Offloads disabled	8	802.1P Packet Priority
1	IPSec	9	802.1P Packet Priority
			IPSec
2	TCP Segmentation	A	802.1P Packet Priority
			TCP Segmentation
3	TCP Segmentation	B	802.1P Packet Priority
	IPSec		TCP Segmentation
			IPSec
4	IP and TCP Checksum	C	802.1P Packet Priority
			IP and TCP Checksum
5	IP and TCP Checksum	D	802.1P Packet Priority
	IPSec		IP and TCP Checksum
			IPSec
(continued)

6IP and TCP Checksum TCP Segmentation

E802.1P Packet Priority IP and TCP Checksum TCP Segmentation