HP Embedded Firewall manual Enabling Offloads, Value Offload Function Enables

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Enabling Offloads

IP and TCP Checksum Offload—reduced CPU utilization by allowing the NIC to perform the checksum calculation of TCP/IP and UDP/IP packets.

802.1p Packet Priority Offload—reduces CPU utilization by allowing the NIC to perform the insertion of the 802.1Q tag header into the packet.

Enabling Offloads

Windows 2003 and Windows 2000 provide 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 2003 or Windows 2000:

1Right-click the My Network Places desktop icon and select Properties. The Network and Dial-up Connections screen appears.

2Right-click the Local Area Connection icon and select Properties. The Local Area Connection Properties screen appears.

3Click Configure.

The 3Com 10/100 Mbps Secure NIC screen appears.

4Click the Advanced tab.

5Select Enable Offloads in the Property list box.

6Select the appropriate value in the Value entry box (shown in the following table) for the desired offload state.

7Close all open windows.

The following table describes values for the offload functions:

Value

Offload Function Enables

 

 

All Offloads Disabled

No offloads

cksum

TCP Checksum

cksum-ipsec

TCP Checksum and IPSec

cksum-tcpseg

TCP Checksum and TCP Segmentation

cksum-tcpseg-ipsec

TCP Checksum and TCP Segmentation and IPSec

ipsec

IP Sec

tcpseg

TCP Segmentation

tcpseg-ipsec

TCP Segmentation and IPSec

802.1p

Packet Priority

802.1p-cksum

Packet Priority and TCP Checksum

802.1p-cksum-ipsec

Packet Priority and TCP Checksum and IPSec

802.1p-cksum-tcpseg

Packet Priority and TCP Checksum and TCP Segmentation

802.1p-cksum-tcpseg-ipsec

Packet Priority and TCP Checksum and TCP Segmentation and

 

IPSec

802.1p-ipsec

Packet Priority and IPSec

802.1p-tcpseg

Packet Priority and TCP Segmentation

802.1p-tcpseg-ipsec

Packet Priority and TCP Segmentation and IPSec

 

 

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Contents 10/100 Secure Network Interface Card User GuideUnited States Government Legend Contents Installing and Configuring Data Encryption Offloads Configuring the NIC Running NIC Diagnostics Installation Overview Installing and Connecting the NICMinimum Installation Requirements Network Environment Cable Required Maximum Cable Length Safety PrecautionsPreparing the NIC and the Computer Installing and Connecting the NIC 3CR990B-97 NIC Double click Network Connections Installing the Network DriverVerifying the Network Driver Installation Install without Diagnostic Program-installs the driver onlyWindows 2003 Server Driver Installation Windows XP Driver Installation Windows XP Driver Installation Windows 2000 Driver Installation Windows 2000 Driver Installation Click Have Disk Windows NT 4.0 Driver InstallationVerifying the Network Driver Installation Windows 98 SE Driver Installation Windows 98 SE Driver Installation Installation During Novell OS Installation Novell NetWare Driver InstallationInstalling the Driver in Novell NetWare Server 5.1 Select Save parameters and load driver Installation with Novell Already InstalledIdentifying the Slot Number Choose Select a driverLoad ODINEB.NLM Verifying or Modifying NIC ParametersRemoving Drivers from Autoexec.ncf Installing the Driver in Novell NetWare Server Page Cd /tmp/3c990/3c990 make Linux 2.4 Driver InstallationLinux 2.4 Driver Installation Selecting Basic or Strong Encryption Processing OverviewOffloading Encryption Processing Encryption Type Level Description Configuring IPSec in Windows 2003, Windows XP, and WindowsCreating a Security Policy Select IP Security Policy Management, and then click Add Clear the Activate the default response rule check boxDefining the Console Creating the PolicyCreating the Filter Action Creating a FilterBinding the Filter Select Un-assign Binding the Filter ActionEnabling Encryption Disabling EncryptionInstalling and Configuring Data Encryption Offloads 3Com DynamicAccess Advanced Server Features Installing 3Com Advanced Server Features for WindowsAbout the Advanced Server Features Failover Load BalancingVLANs Server Features Using Other NICsVerifying the Installation Installing 3Com Advanced Server SoftwarePlanning the Configuration Configuring Groups and VLANsNumber of VLANs Working With Server FeaturesWindows NT Creating a GroupWindows 2003, Windows XP, and Windows Specifying a Dedicated IP Address Adding NICs to a GroupSpecifying Traffic Priorities Click ConfigureCreating a Vlan Changing an IP AddressRemoving a NIC from a Group Saving the ConfigurationDisabling Load Balancing for a Group Changing the Primary NICDisplaying Group Properties Troubleshooting a Load Balancing ConfigurationSymptomTip Displaying NIC PropertiesDouble-clickNetwork Adapters Enabling Offloads Value Offload Function EnablesConfiguring Offloads for a Group of Different NICs Disabled Configuring the NICDefault NIC Settings Option Description SettingsAll Configuring the NICMethod Description Requirements Configuration MethodsInstalling the 3Com NIC Diagnostics Program Changing General NIC Configuration SettingsUsing the 3Com NIC Diagnostics Program Starting the 3Com NIC Diagnostics ProgramUsing the 3Com DOS Configuration Program BBS BIOS-Compatible PCs Configuring the Managed PC Boot Agent MBAEnabling or Disabling the Boot ROM Setting Booting From the NetworkDisabling the 3Com Logo Non-BBS BIOS-Compatible PCsState Meaning Troubleshooting the NICInterpreting the NIC LEDs 3CR990B-97 NIC3CR990B-FX-97 NIC Viewing the NIC LEDs in the Diagnostics ProgramTroubleshooting Problems with the LEDs Accessing Release Notes and Frequently Asked Questions Accessing 3Com Support DatabasesAccessing the 3Com Knowledgebase Accessing the 3Com NIC Help SystemCleaning Up a Failed Installation Troubleshooting the NIC InstallationProblems or Error Messages Tip Description Troubleshooting the Network ConnectionTroubleshooting a Network Connection Troubleshooting Remote Wake-UpRJ-45 Cabling Pinouts Copper NIC Only Troubleshooting HubsWindows NT Removing the Network DriverWindows 2003, Windows XP, and Windows Windows 98 SE NetWare Removing 3Com DynamicAccess Advanced Server FeaturesFrom the Start menu, select Settings/Control Panel Running the 3Com DOS Diagnostics Program Running NIC DiagnosticsTab Description Running the NIC Diagnostics TestsClick Perform NIC Test Running the Network TestRunning the NIC Test Viewing Network Statistics Viewing the NIC LEDs in the 3Com Diagnostics ProgramUsing the 3Com Icon in the Windows System Tray Displaying Network Statistics Removing the 3Com NIC Diagnostics ProgramEnabling the Icon Running NIC Diagnostics Standards Conformance 3CR990B-97 NIC SpecificationsHardware Network Interface3CR990B-FX-97 NIC Specifications Cabling Requirements RJ-45 Connector Pin Assignments About the 3Com DMI Agent Installing the 3Com DMI AgentNetwork Management Requirements Installing the 3Com DMI AgentClick NIC Software Click Install 3Com DMI Agent Now System RequirementsPage Installing the 3Com DMI Agent Obtaining Support for your Product Country Telephone Number Asia, Pacific Rim Contact UsTelephone Technical Support and Repair Latin America Country Telephone NumberEurope, Middle East, and Africa North America Telephone Support and Repair 1 CountryInterference Handbook FCC Class B StatementFCC Declaration of Conformity MIC Class B Compliance Korea Safety Compliance Statement