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Interrupt moderation, Ipsec offload, Interrupt moderation ipsec offload – Allied Telesis AT-2812FX User Manual

Page 65

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AT-2812FX ExpressCard Fast Ethernet Fiber (SC) Module Installation and User’s Guide

65

Interrupt

Moderation

Interrupt moderation enables adaptive interrupt coalescing, which limits
the rate of interrupt to the CPU during packet transmission and packet
reception. The disabled option allows one interrupt for every packet
transmission and packet reception. The default value is Enabled.

To change the Interrupt Moderation setting, do the following:

1. Access the Device Manger for your operating system.

To access the Windows XP Device Manager, see “Selecting the
Device Manager Window” on page 47
.

To access the Windows Vista Device Manager, see “Selecting the
Device Manager” on page 39.

To access the Windows 7 Device Manager, see “Selecting the
Device Manager Window” on page 54
.

2. From the Advanced tab under Property, select Interrupt Moderation.

For an example of the Advanced tab, see Figure 31 on page 64.

3. From the Value list on the Advanced tab, select one of the following:

Enabled

Disabled

4. Click OK.

5. 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.

6. Verify that the port LED operates as described in “Physical

Description” on page 20.

IPSec Offload

Traditionally, IPSec has been used for remote connections, but this
feature has moved into the Local Area Network (LAN) to secure local
network traffic against eavesdropping.

Vista’s Next Generation TCP/IP stack provides APIs for accessing
brackets to allow advanced granularity to filter both inbound and outbound
traffic.This was not possible with Microsoft’s XP Operating system. In
addition, Vista’s security management now closely ties the firewall and
IPSec features together by using a snap-in called Windows Firewall with
Advanced Security. The onboard encryption engine on the AT-2812FX
module off-loads this task to the network controller instead of the host
CPU, thereby freeing the host CPU for other important tasks. The off-
loading feature is unique in the industry and enables you to set tight
security efficiently within your network at a minimal cost.