Patent application number | Description | Published |
20110307628 | Communication system, node, control server, communication method and program - A communication system comprises a node that receives a packet with a process rule sequence including a plurality of process rules that should be set in a process rule storage unit of a node on a data transfer network, and sets a process rule in the process rule storage unit of own node according to the process rule sequence. | 12-15-2011 |
20120008629 | COMMUNICATION SYSTEM, NODE, CONTROL SERVER,COMMUNICATION METHOD AND PROGRAM - A packet contains an array of processing operations that are to be performed by a node of a data forwarding network. Each node in a data forwarding network receiving performs the processing it has to the packet and perform in accordance with the array of the processing operations contained in the packet. | 01-12-2012 |
20120014388 | Path selection method, information processor, network system, and path selection program - A path selection method, an information processor, a network system, and a path selection program are provided which rapidly determine a path that has no loop when determining the path by using a control server to probabilistically select a pass node. A network having a plurality of paths from a source to a destination is controlled. A node forming the path is selected on the basis of a node-to-node transfer probability, and in the case where the selected node is a node that has already been passed through on the path, the transfer probability is reset such that the selection of the node is suppressed. | 01-19-2012 |
20120044935 | Relay control unit, relay control system, relay control method, and relay control program - Communication allowance determination means determines, using information of a packet received by a packet relay unit and based on a policy which is information associating a match condition with communicability information, whether to allow or not to allow communication to a destination unit for the packet that meets the match condition, the match condition being information identifying the packet, and the communicability information indicating whether to allow or not to allow the communication to the destination unit for the packet that meets the match condition. Rule setting means sets, at least in the packet relay unit receiving the packet, a rule of executing a process for suppressing forwarding of the packet to the destination unit, on condition that the communication allowance determination means determines not to allow the communication to the destination unit for the packet that meets the match condition. | 02-23-2012 |
20120093158 | COMMUNICATION SYSTEM, NODE, CONTROL DEVICE, COMMUNICATION METHOD, AND PORGRAM - A communication system includes a node that processes a received packet; and a control device that sets a processing rule, which defines a matching rule and processing for a packet that conforms to the matching rule, in the node. The node holds an identifier in association with a processing rule and determines whether or not to perform processing for a received packet depending upon whether or not an identifier of the received packet corresponds to an identifier associated with a processing rule corresponding to a matching rule that conforms to the received packet, wherein the processing is performed according to the processing rule corresponding to the matching rule that conforms to the received packet. | 04-19-2012 |
20130301658 | COMMUNICATION SYSTEM, CONTROL DEVICE, FORWARDING NODE, COMMUNICATION CONTROL METHOD, AND PROGRAM - A communication system includes a control device that deteitnines packet processing rules; a forwarding node that processes a received packet using a processing rule that includes one of a plurality of processing rules transmitted from the control device and that corresponds to the received packet; a comparison unit that compares a first value with a second value wherein the first value is calculated from a first processing rule group held in the forwarding node and the second value is calculated from a second processing rule group determined by the control device for transmission to the forwarding node; and a confirmation unit that confirms if the forwarding node and the control device are synchronized based on the comparison result. | 11-14-2013 |
20130308463 | PATH SELECTION METHOD AND CONTROL SERVER - A path selection method includes: calculating an inter-node traffic forwarding probability from a parameter value relating to path selection; calculating a link cost when the parameter value is used by using the inter-node traffic forwarding probability and a communication amount; calculating a cost that a traffic flow experiences end-to-end by using the inter-node traffic forwarding probability and the link cost; and using an inter-node traffic forwarding probability with which the cost reaches a minimum value. | 11-21-2013 |
20130308650 | COMMUNICATION SYSTEM, NODE, CONTROL SERVER, COMMUNICATION METHOD AND PROGRAM - A packet contains an array of processing operations that are to be performed by a node. Each node in a data forwarding network performs the processing it has to perform in accordance with the array of the processing operations contained in the packet (FIG. | 11-21-2013 |
20130322440 | COMMUNICATION SYSTEM, FORWARDING NODE, CONTROL DEVICE, COMMUNICATION CONTROL METHOD, AND PROGRAM - A communication system includes a control device that sets a forwarding path of a packet and determines processing rules corresponding to the forwarding path; a forwarding node that includes a processing unit that processes a received packet by a processing rule transmitted from the control device, and a matching information processing unit that adds matching information, which represents information on processing for the received packet, to the received packet and forwards the received packet; and a confirmation unit that confirms if the forwarding node and the control device are synchronized according to whether the matching information added to the received packet matches pre-calculated matching information. | 12-05-2013 |
20140211795 | COMMUNICATION SYSTEM, CONTROL DEVICE, NODE, NODE CONTROL METHOD, AND PROGRAM - A control device is connected to a node and to a packet processing unit. The node operates according to a processing rule that includes a matching rule, against which a received packet is matched, and processing content applied to a packet that matches the matching rule. The packet processing unit performs packet processing according to a predetermined specification. The control device inputs a packet, received from the node to request to create a processing rule, to the packet processing unit in response to a request from the node. The control device creates a processing rule corresponding to a packet processing result of the packet processing unit obtained as a result of the input and sets the created processing rule in the node. | 07-31-2014 |