Method and apparatus for packet classification using bloom filter

Abstract

The present disclosure provides an apparatus and method for packet classification using a Bloom filter and includes determining a matching length of how long each field value of one or more fields in an input packet coincides with a field value of the corresponding field stored in a rule set by performing a field-by-field search on the fields in the input packet, and generating a tuple list made up of a combination of one or more of the matching length for the respective fields; selecting particular tuples existing in the rule set from the tuple list; filtering each of the selected tuples by using the Bloom filter; and searching for a best matching rule as a search pool exclusively within the tuples with the positive result of the filtering. According to the present disclosure, the object tuples to search can be substantially relieved to improve the searching performance.

Dependencies are inferred from the claim text.