High Performance; Jumbo Frames; Tcp, Udp, And Ip Checksum Calculation; Dynamic Interrupt Moderation - Allied Telesis AT-2400 Series Installation Manual

AT-2916T and AT-297x Advanced Features

High Performance

Jumbo Frames

TCP, UDP, and
IP Checksum
Calculation
Dynamic
Interrupt
Moderation
130
The Allied Telesyn AT-2916T and AT-297x Series Gigabit Ethernet
Adapters are high performance and highly reliable adapters. Best
performance is reached with an AT-297x 64-bit/66 MHz bus. In full-
duplex mode, wire speed can be achieved.
The Allied Telesyn AT-2916T and AT-297x Series Gigabit Ethernet
Adapters support 9 KB Jumbo frames. They are tested according to the
prevailing standard and switches on the market.
The adapter supports the calculation of TCP, UDP, and IP checksums.
These calculation are integrated in the hardware of the Gigabit Ethernet
adapters. The checksums are calculated without time loss by the MAC
controller for both the receive and the transmit path. This improves the
overall performance of the system and shifts these CPU-intensive tasks
away from the host CPU.
If the network is running at gigabit speeds and the small packets are
being transferred, there may in extreme cases be more than 100,00
interrupts per second. To reduce the load on the CPU, the Gigabit
Ethernet adapters can use interrupt moderation to group these
interrupts so that several data packets can be handled per interrupt.