10 Gigabit Ethernet-SR PCI-X 2.0 DDR Adapter (1410eb02) and 10 Gigabit Ethernet-LR PCI-X 2.0 DDR Adapter (1410ec02)

The 10 Gigabit Ethernet-SR PCI-X 2.0 DDR Adapter (1410eb02) and the 10 Gigabit Ethernet-SR PCI-X 2.0 DDR Adapter (1410ec02) support the following configuration parameters:

Transmit Jumbo Frames

When you set the attribute value to Yes, frames up to 9018 bytes in length can be transmitted on this adapter. The TCP/IP settings for the interface associated with the adapter are automatically initialized to maximum transmission unit MTU 9000 when the Yes value is selected. When you set the attribute value to No, the maximum size of frames transmitted is 1518 bytes and the MTU is 1500. When the jumbo frame setting is enabled, it might be possible to communicate only with other network nodes that are also jumbo-enabled and that have the same MTU. This feature can result in a considerable performance improvement. Frames up to 9018 bytes in length can always be received on this adapter.

Enable Hardware Transmit TCP Resegmentation

Permits the adapter to perform resegmentation of transmitted TCP packets that are transmitted over IPv4 and IPv6 in hardware. With this capability, the host can create TCP segments that are larger than the actual MTU size of the Ethernet link (packet sizes of up to 64 KB can be created). The adapter then subdivides these very large packets into multiple MTU-size packets. This offloading of packet creation is recommended for increased system performance. You can specify the values of Yes and No.

Enable Hardware Transmit and Receive Checksum Offload

When you set this attribute to Yes, the adapter calculates the checksum for TCP frames transmitted and received over IPv4 and IPv6. This setting is suggested for improved system performance. When you specify the No value, the checksum is calculated by the appropriate system software.

Note: The mbuf structure, which describes a transmitted frame, contains a flag that indicates whether the adapter must calculate the checksum for the frame.

Enable Hardware Receive UDP Checksum Offload

Setting this attribute to the Yes value indicates that the adapter calculates the checksum for UDP standard and fragmented frames received over IPv4 and IPv6. This setting is suggested for improved system performance. If you specify the No value, the checksum is calculated by the appropriate system software.

Note: The mbuf structure that describes a received frame contains a flag that indicates whether the adapter calculated the checksum for the frame.