Communication system, node, statistical information collection device, statistical information collection method and program

摘要

For use in a communication system where communication is carried out by setting a packet handling operation (flow entry) in the nodes by a control device, the present invention provides a configuration in which statistical information may be collected at a desired information granularity level without increasing the control load of the control device. A node of the communication system includes a packet processing unit that processes a received packet according to a packet handling operation defining a matching rule and processing of a packet that matches the matching rule; and a statistical information recording unit that records statistical information on a packet according to a division different from the matching rule, and a statistical information collection device is provided that issues an instruction on a division, according to which the statistical information is to be recorded, to the node and collects the statistical information.

主权项

1. A communication system comprising:
a node comprising: a packet processing unit that processes a received packet according to a packet handling operation, the packet handling operation defining a matching rule and processing of a packet that matches the matching rule; and a statistical information recording unit that records first statistical information on a packet according to a first division, which is similar with the matching rule; and a statistical information collection device that issues an instruction on a second division, different from the matching rule to said node and collects second statistical information according to the second division, wherein said statistical information collection device issues an instruction to the statistical information recording unit of said node separately from the packet handling operation, said statistical information recording unit records the second statistical information according to said instruction, and said statistical information recording unit sends, to a statistical information collection device, end notification indicating said recording of said first and second statistical information ends if said received packet is not received for a predetermined time.