Enabling Offloads - 3Com 3C990B-TX-M User Manual

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.)
To enable or disable individual offload settings in Windows 2000:
1 Right-click the My Network Places desktop icon and select Properties.
The Network and Dial-up Connections screen appears.
2 Right-click the Local Area Connection icon and select Properties.
The Local Area Connection Properties screen appears.
3 Click Configure.
The 3Com 10/100 Mbps PCI NIC with 3XP Processor screen appears.
4 Click the Advanced tab.
5 Select Enable Offloads in the Property list box.
6 Select the appropriate value in the Value entry box (shown in the following table) for
the desired offload state.
7 Close all open windows.
The following table describes values for the offload functions:
Value
All Offloads Disabled
cksum
cksum-ipsec
cksum-tcpseg
cksum-tcpseg-ipsec
ipsec
tcpseg
tcpseg-ipsec
802.1p
802.1p-cksum
802.1p-cksum-ipsec
802.1p-cksum-tcpseg
802.1p-cksum-tcpseg-ipsec
802.1p-ipsec
802.1p-tcpseg
802.1p-tcpseg-ipsec
Using Windows 2000 Offload Features
Offload Function Enabled
No offloads
TCP Checksum
TCP Checksum and IPSec
TCP Checksum and TCP Segmentation
TCP Checksum and TCP Segmentation and IPSec
IPSec
TCP Segmentation
TCP Segmentation and IPSec
Packet Priority
Packet Priority and TCP Checksum
Packet Priority and TCP Checksum and IPSec
Packet Priority and TCP Checksum and TCP Segmentation
Packet Priority and TCP Checksum and TCP Segmentation and IPSec
Packet Priority and IPSec
Packet Priority and TCP Segmentation
Packet Priority and TCP Segmentation and IPSec
53