Communication system, control device, node, processing rule setting method and program

摘要

A communication system includes a plurality of nodes each including a packet processor that processes a packet in accordance with a packet handling operation(s) when the packet is received, the packet handling operation(s) correlating a processing to be applied to the packet with a matching rule that identifies the packet to which the processing is to be applied, and a control device that calculates a packet forwarding path in response to a request to set the packet handling operation from any one of the nodes; the control device setting a plurality of the packet handling operations that implement the packet forwarding path for the node(s) on the packet forwarding path and recording the packet handling operations in correlation with one another, the control device inquiring at the node(s) on the packet forwarding path about a setting state(s) of the packet handling operation(s).

主权项

1. A control apparatus comprising:
a memory configured to store program instructions; and a processor configured to execute the program instructions to: send a first instruction to set a first packet processing rule to a first switch apparatus which has a second processing rule; detect a failure of setting the first packet processing rule to the first switch apparatus; identify, in response to detecting the failure, a flow corresponding to the second processing rule; identify a second switch apparatus based on the flow; send a second instruction to set the second switch apparatus to a previous state corresponding to the second processing rule; wherein the processor is further configured to execute the program instructions to: identify, in response to detecting the failure, a flow identifier and a transaction identifier; and identify, based on the flow identifier and the transaction identifier, the second switch apparatus.