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    • 9. 发明授权
    • Flexible packet modification engine for a network device
    • 针对网络设备的灵活数据包修改引擎
    • US07983291B2
    • 2011-07-19
    • US11214990
    • 2005-08-31
    • Eric Ng
    • Eric Ng
    • H04L12/54
    • H04L49/351H04L49/103H04L49/205H04L49/254H04L49/3009H04L49/3036H04L49/3072H04L49/352H04L49/602H04L69/22
    • A network device for processing data on a data network includes a port interface, in communication with a plurality of ports, configured to receive data packets from a data network and to send processed data packets to the data network, a memory management unit, in communication with and controlling memory, configured store data on and retrieve data from the memory and a parser, in communication with the port interface and the memory management unit, configured to parse the received data packets to determine attributes of the data packets and to modify data packets retrieved from the memory, based on the determined attributes, to produce the processed data packets. The parser is configured to modify the data packet on a cell basis, through addition, subtraction and substitution of cells of the data packets, where each cell of the cells has a predetermined bit-length.
    • 一种用于在数据网络上处理数据的网络设备包括:与多个端口通信的端口接口,被配置为从数据网络接收数据分组,并将经处理的数据分组发送到数据网络;通信中的存储器管理单元 配置和控制存储器,配置在与端口接口和存储器管理单元通信的存储器和与存储器管理单元通信的解析器之间存储数据和从存储器检索数据,以及解析器,用于解析所接收的数据分组以确定数据分组的属性并修改数据分组 基于确定的属性从存储器检索以产生处理的数据分组。 解析器被配置为通过对数据分组的小区的加法,减法和替换来修改基于小区的数据分组,其中小区的每个小区具有预定的比特长度。