HP Embedded Firewall Series Instrukcja Użytkownika Strona 47
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Enabling Offloads
41
• 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:
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 Secure NIC 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 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
- User Guide 1
- Contents 3
- Installation Overview 7
- Safety Precautions 8
- Windows 2003 Server 11
- Driver Installation 11
- Installing the Network Driver 13
- Identifying the Slot Number 22
- Linux 2.4 Driver Installation 27
- Installing and Configuring 29
- Data Encryption Offloads 29
- Windows 2000 30
- Defining the Console 31
- Creating the Policy 31
- Creating a Filter 32
- Binding the Filter 32
- Creating the Filter Action 32
- Binding the Filter Action 33
- Enabling Encryption 33
- Disabling Encryption 33
- Features for Windows 35
- Load Balancing 36
- Failover 36
- Verifying the Installation 38
- Configuring Groups and VLANs 39
- Working With Server Features 40
- Creating a Group 41
- Adding NICs to a Group 42
- Creating a VLAN 43
- Saving the Configuration 44
- Changing the Primary NIC 44
- Removing a NIC from a Group 44
- Deleting or Editing a VLAN 44
- Displaying NIC Properties 45
- Displaying Group Properties 45
- Enabling Offloads 47
- 11 Configuring the NIC 49
- Configuration Methods 51
- Booting From the Network 55
- Disabling the 3Com Logo 56
- Troubleshooting the NIC 57
- 3CR990B-FX-97 NIC 58
- Problems or Error Messages 60
- 3CR990B-97 NIC 62
- Troubleshooting Hubs 63
- Removing the Network Driver 64
- Windows 98 SE 65
- Features 66
- Running NIC Diagnostics 67
- Running the Network Test 69
- Running the NIC Test 69
- Viewing Network Statistics 70
- Enabling the Icon 71
- Displaying Network Statistics 71
- Specifications and 73
- Cabling Requirements 73
- Installing the 3Com DMI Agent 77
- System Requirements 78
- Obtaining Support for your 81
- Contact Us 82
- : +44 (0)1442 435529 83
- Regulatory Compliance 85
- Information 85
- FCC Declaration of Conformity 86
- Safety Compliance Statement 86
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