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    • 2. 发明公开
    • Hardware-based granular traffic storm protection
    • 五金商品Verkehrssturmschutz
    • EP2720412A1
    • 2014-04-16
    • EP13188554.3
    • 2013-10-14
    • Rockwell Automation Technologies, Inc.
    • Batke, Brian A.Balasubramanian, Sivaram
    • H04L12/28G05B19/418H04L12/40H04L29/06
    • H04L63/1458H04L47/24H04L47/32H04L63/0227
    • Aspects of the present invention provide a device, method and system which utilize hardware-based granular evaluation of industrial control protocol packets to withstand traffic storms. In an embodiment, packet evaluation circuitry coupled to a port may be adapted to evaluate one or more protocol fields contained in each inbound packet before switching circuitry can send the unbound packet to the proper destination. The inbound packet may be sent by the switching circuitry if it is a particular message, or may be selectively inhibited from being sent by the switching circuitry if the inbound packet does not contain the particular message for being sent and if the total number of bytes of the inbound packet type exceeds a threshold for the outbound port during a given period of time. As such, critical industrial applicatians may continue to operate in the presence or a traffic storm.
    • 本发明的方面提供一种利用工业控制协议分组的基于硬件的粒度评估来抵御交通风暴的装置,方法和系统。 在一个实施例中,耦合到端口的分组评估电路可以适于在切换电路可以将未绑定分组发送到适当目的地之前评估每个入站分组中包含的一个或多个协议字段。 如果入口分组是特定消息,则可以由切换电路发送入站分组,或者如果入站分组不包含用于发送的特定消息,则可以选择性地禁止由切换电路发送入局分组,并且如果总共的字节数 入站分组类型在给定时间段内超出了出站端口的阈值。 因此,关键的工业应用程序可能会在存在或交通风暴中继续运作。