Method and apparatus for a high-speed frame tagger

摘要

A method is described including extracting protocol information from a received packet within a framer, comparing the protocol information in a first pass to predetermined values to produce a first result, and tagging the packet based on the set of results.

主权项

1. A computer-implemented method comprising:
extracting protocol information from plural portions of a received packet within a framer; performing a hierarchical comparison of the extracted protocol information with expected protocol values, wherein the hierarchical comparison comprises:
performing a first-priority comparison of first extracted protocol information from a first portion of the packet; andperforming a second-priority comparison of second extracted protocol information from a second portion of the packet; and assigning a tag to the packet based on the hierarchical comparison, wherein the first-priority comparison indicates no match for the first extracted protocol information, and wherein the tag comprises a default tag.