Chapter 5: Setting Advanced Properties

Checksum Offload

Usually, the Checksum Offload function is computed by the protocol stack. By selecting one of the Checksum Offload properties, the adapter can compute the checksum.

To change the Checksum Offload setting, do the following:

1.For Windows Server 2003 and Windows XP systems, access the System Properties Dialog Box. See “Modifying Configuration Properties” on page 39.

For Windows 2008 R2, Windows 7, and Windows Vista systems, access the Device Manger for your operating system:

To access the Device Manager window in Windows 2008 R2 or Windows 7, see “Selecting the Device Manager in Windows 2008 R2 and Windows 7” on page 44.

To access the Windows Vista Device Manager, see “Selecting the Device Manager in Windows Vista” on page 45.

2.Click the Advanced tab.

The Advanced tab is shown in Figure 21 on page 56.

3.From the Property list under the Advanced tab, select TCP/UDP Checksum Offload v4 or TCP/UDP Checksum Offload v6.

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

None - Disables checksum offloading.

Rx TCP/IP Checksum - Enables receive TCP, IP, and UDP checksum offloading.

Tx TCP/IP Checksum - Enables transmit TCP, IP, and UDP checksum offloading.

Tx/Rx TCP/IP Checksum (default) - Enables transmit and receive TCP, IP, and UDP checksum offloading.

5.Click OK.

6.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.

7.Verify that the port LED operates as described in “LEDs” on page 16.

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Allied Telesis AT-2916LX10/LC, AT-2972LX10/LC manual Checksum Offload

AT-2916LX10/LC, AT-2972LX10/LC specifications

Allied Telesis has long been recognized for its commitment to delivering high-performance networking solutions, and the AT-2972LX10/LC and AT-2916LX10/LC models exemplify this tradition of excellence. These products are designed to meet the demanding requirements of modern businesses looking to enhance their network infrastructure with reliable and efficient connectivity options.

The AT-2972LX10/LC is a media converter that features two SFP (Small Form-factor Pluggable) slots, enabling users to connect to a variety of fiber optic networks. It supports a range of optical transceivers, providing flexibility in network design to suit different distance and bandwidth requirements. This media converter is particularly effective in extending the reach of Ethernet networks, capable of transmitting data up to 80 kilometers through single-mode fiber. This makes it an ideal choice for organizations with geographically dispersed locations needing robust connectivity.

On the other hand, the AT-2916LX10/LC is a layer 2 switch tailored for small to medium-sized businesses. It is equipped with 16 10/100/1000Mbps Gigabit Ethernet ports, ensuring that high-speed data transfer and efficient bandwidth utilization can be achieved. Additionally, it features advanced quality of service (QoS) capabilities that prioritize critical data traffic, ensuring that high-priority applications function smoothly without disruption.

Both models utilize advanced technologies that enhance performance and reliability. With support for MAC address learning, auto-negotiation, and full-duplex transmission, these devices adapt seamlessly to various network conditions. They are compliant with IEEE standards, ensuring interoperability with a wide range of networking equipment. Moreover, they offer extensive management features, including SNMP support for proactive monitoring and diagnostics, enabling network administrators to maintain optimal performance and swiftly address any potential issues.

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In summary, the Allied Telesis AT-2972LX10/LC and AT-2916LX10/LC are highly effective networking solutions that cater to businesses looking to optimize their connectivity. With their comprehensive features, support for advanced technologies, and commitment to reliable performance, these devices are well-equipped to meet the challenges of today’s networking landscape. They represent a strategic investment for any organization aiming for enhanced communications and operational efficiency.