Allied Telesis AT-2911 Series Adapters - Manual (Page 54)

Chapter 3: Modifying Advanced Properties
54
IPv4 Checksum Offload
The IPv4 Checksum Offload feature allows the adapter to verify the IPv4
checksum to enhance IPv4 receive and transmit performance and reduce
CPU utilization.
To enable or disable the IPv4 Checksum Offload feature, do the following:
1. Access the Advanced Properties.
See “Accessing Advanced Properties” on page 43.
2. Select IPv4 Checksum Offload in the Property box.
The IPv4 Checksum Offload page is displayed as shown in Figure 23.
Figure 23. IPv4 Checksum Offload Page
3. Select one of the following options:
 Rx & Tx Enabled— The adapter verifies IPv4 Checksum for both
receiving and transmitting packets. This is the default setting.
 Disabled— The CPU verifies IPv4 checksum.
 Rx Enabled— The adapter verifies IPv4 Checksum only for
receiving packets.
 Tx Enabled— The adapter verifies IPv4 Checksum only for
transmitting packets.