Method and apparatus for determining a protocol type on a network connection using error detection values stored within internetworking devices
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United States of America Patent
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Aug 15, 2000
Grant Date -
N/A
app pub date -
Feb 10, 1998
filing date -
Feb 10, 1998
priority date (Note) -
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Abstract
A method and apparatus for determining a network protocol type as the protocol is received on a network connection is presented. A network protocol being used on a communication link is determined by receiving N-number of data frames over the communication link, where N is a small number (e.g., 1 data frame). Error detection codes are calculated on the N-number of data frames with a selected error detection process. The calculated error detection codes are used to determine the type network protocol being used on the communication link. A protocol stack with multiple network protocol layers used on a communication link can also be determined by identifying individual protocol types in the protocol stack using error detection codes. Identifying a network protocol as it is received reduces the complexity of identifying network protocols and prevents multiple network protocol interpreters from being invoked to determine what network protocol is being used.
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