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Network + Systems Infrastructure
B U Y E R ' S   G U I D E  
Gigabit Ethernet NICs Toe the Line

  September 2, 2002
  By Sean Doherty


>> continued from previous page

Full Range of Off-Load Processes

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 Full Range of Off-Load Processes
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The TCP/IP off-load process generally refers to the capability of engaging protocol processing at OSI Layers 3 and 4. Many of the NICs in our survey use Gigabit Ethernet controllers and hardware acceleration to process TCP, IP and UDP checksums and TCP segmentation at the MAC (Media Access Control) and physical (PHY) layer. But the full range of TCP/IP protocol processing can be separated into four processes: connection establishment, data transmission/reception, connection termination and error handling.

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