Method for generating input parameter and device

Abstract

The present invention provides a method for generating an input parameter and a device. A first network device receives a packet; determines, according to an identifier of a first packet header in a rule set, whether the packet includes the first packet header, where the rule set includes a first rule, the first rule includes the identifier of the first packet header and first operation information, and the first operation information includes extracting a first parameter from the first packet header. The first network device extract the first parameter from the first packet header when the packet includes the first packet header; and determines an input parameter according to the first parameter. In this way, an input parameter of a packet is flexibly extracted, adapting to different packet formats.

Dependencies are inferred from the claim text.