Method and device for resolving network data packet

Abstract

The invention discloses a method and a device for resolving a network data packet, and belongs to the field of network communication. The method comprises the following steps of: connecting required protocol resolving sub modules in series to form a data resolving link; 2) continuously processing the current data packet according to the set protocol type by the first protocol resolving sub module of the data resolving link, and extracting information such as protocol type of the current load and the like; and 3) continuously processing the input data by the protocol resolving sub modules, namely judging whether the input protocol type is consistent with the resolved protocol type of the current layer, if so, processing the received data packet and outputting the data packet to the next sub module, otherwise, directly outputting the received data to the next sub module. The device comprises the data resolving link which is formed by sequentially connecting a data link layer protocol resolving sub module, an MPLS (multi-protocol label switch) protocol resolving sub module, a network layer protocol resolving sub module and a transmission layer protocol resolving sub module in series. The method and the device can realize linear speed resolution, support the data packets of multiple types and realize seamless upgrade.

Description

technical field [0001] The invention relates to a novel method and device for analyzing network data packets, in particular to a method and device for analyzing complex data packets under large flow. Background technique [0002] Network protocols are usually developed in different layers, each layer responsible for different communication functions. Such as figure 1 As shown, according to the OSI architecture, the data packets on the network are divided into seven layers, the physical layer, the data link layer, the network layer, the transport layer, the session layer, the presentation layer, and the application layer. According to another architecture TCP / IP, the data packets on the network are divided into 4 layers, including data link layer, network layer, transport layer, and application layer. TCP / IP itself is also a combination of multiple protocols at different levels. Whether it is OSI, TCP / IP or other network models, the data packets on the network are layered....

AI Technical Summary

Problems solved by technology

Therefore, in the case of large-flow data packet access, it is easier to achieve line-speed parsing of data packets, but because multiple operations are performed synchronously, and all data packets will undergo the same operation, the deep analysis capability is poor and not flexible enough , there are fewer types of packets that can be parsed

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