摘要:
A controller removes a node to be bypassed from topology information that prescribes the network configuration and calculates a new path not passing the bypass node. For the nodes that form the path, the controller creates flow information that prescribes operation on the flow at nodes to set the flow information at the nodes on the path.
摘要:
In shifting a flow that passes through a node onto a different alternative path which does not pass through the node passed through by the flow, a controller that controls a flow of each node under control determines alternative candidate paths, each of which has a same source and a same destination as a path associated with the flow to be shifted and does not pass through the node passed through by the flow to be shifted, determines the alternative path from the alternative candidate paths according to a predetermined criterion, and aggregates flows of each node on the alternative path.
摘要:
A control apparatus comprises: a switch extraction unit extracting a second switch adjacent to a first switch that stops in a communication system including a plurality of switches having a predetermined topology; a flow extraction unit extracting a flow transferred to the first switch after the second switch from a plurality of flows passing through the communication system; a path determination unit determining, assuming that, among the plurality of switches, switches located at start and end nodes of the flow are third and fourth switches, respectively, a path from the second switch to the fourth switch, based on a topology obtained by excluding the first switch from the predetermined topology; and a path generation unit connecting a path from the third switch to the second switch in an initial path of the flow and a path determined by the path determination unit to generate a new path of the flow.
摘要:
In shifting a flow that passes through a node onto a different alternative path which does not pass through the node passed through by the flow, a controller that controls a flow of each node under control determines alternative candidate paths, each of which has a same source and a same destination as a path associated with the flow to be shifted and does not pass through the node passed through by the flow to be shifted, determines the alternative path from the alternative candidate paths according to a predetermined criterion, and aggregates flows of each node on the alternative path.
摘要:
A controller removes a node to be bypassed from topology information that prescribes the network configuration and calculates a new path not passing the bypass node. For the nodes that form the path, the controller creates flow information that prescribes operation on the flow at nodes to set the flow information at the nodes on the path.
摘要:
A computer system of the present invention is provided with an open flow controller 3, and a switch 4i. The switch 4i notifies a MAC address contained in packet data to the open flow controller 3 when the packet data from the virtual machine that the migration has completed does not fit with a rule shown by the flow set to the switch itself. The open flow controller 3 sets a communication flow for a migration destination VM generated according to the notified MAC address to the switch 4i. The switch 4i transfers the packet data for said virtual machine which follows a rule 444 shown by the communication flow for said migration destination VM, to the migration destination virtual machine based on an action 445 shown by the communication flow for said migration destination VM.
摘要:
A control server is connected to a plurality of physical nodes that keep control information defining an operation to be taken in accordance with input/output packet characteristics and process the input/output packets according to the control information. The control server includes a first storage unit that stores configuration information about a virtual network configured to include virtual nodes that are virtualized versions of the physical nodes, and a second storage unit that stores virtual network identifying information identifying the virtual network from characteristics of an input packet, and the control server identifies a physical node that configures a virtual network that handles a packet having a characteristic in common with the packet received by the physical node based on a request from the physical node and updates control information for each physical node.
摘要:
Disclosed is a disk array system which includes a plurality of disks constituting a disk array and a backup storage for backing up data in the disk array and performs control so that when a failed disk among the disks constituting the disk array is replaced with the replacement disk, restoration of data in the replacement disk is performed using the backup device.
摘要:
A method of distributing contents including steps of: calculating feature quantities of contents written in a plurality of files by using a common calculation operation; allotting a common ID to feature quantities which are equivalent to each other among the calculated feature quantities; associating the plurality of files with the IDs corresponding to said files, and storing the associated files and IDs into a node of a network; gathering, when obtaining the stored file from the node, information on ID of said file and said node through the network; requesting the node shown in the gathered information to transmit the file corresponding to the ID shown in said information; and transmitting the requested file from the node.
摘要:
Replication between master storage and replica storage is performed via an arbitration apparatus. The arbitration apparatus controls transmission of update information from the master storage to the replica storage to thereby rationalize the updating sequence of replica storage.