| 摘要 |
A method for processing frames transmitted in a network including nodes and network segments connecting the nodes. Frames transmitted over network segments are detected. Frame information from each detected frame is stored in a frame information repository. A stored hierarchical data structure includes vectors specifying frame information defining frames permitted in the network, classes including vectors with constraints on the vectors, and patterns including classes with constraints on the classes. The frame information in the detected frames may not match the frame information specified in the vectors. The vectors, if matched by the frame information in the detected frames, may not satisfy the constraints in the classes. The vectors, if matched by the frame information in the detected frames, may satisfy the constraints in the classes, and the classes whose constraints are satisfied by the matched vectors may not satisfy the constraints in the patterns.
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