Hardware-based granular traffic storm protection

摘要

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.