Abstract: A communication apparatus connected to an adjacent communication apparatus through a first path and a second path to receive a frame with a path identifier through the first path or the second path, the apparatus including: a first network interface configured for communicating via the first path; a second network interface configured for communicating via the second path; and a processor configured for extracting a first monitoring frame and a second monitoring frame, which are failure monitoring frames, from frames received on the first network interface and the second network interface; detecting a failure, based on input monitoring frames; and converting the path identifier of the first monitoring frame or the path identifier of the second monitoring frame, which are extracted, to make the path identifiers equal to each other.

Abstract: A transfer device that is installed in a unit network that includes a gateway includes a sending/receiving unit that sends/receives a frame to/from a transfer device that is installed in another unit network in a network that includes the unit network, a determining unit that determines, based on destination address or source address in a packet in the frame sent/received by the sending/receiving unit, whether the packet is related to communication between an internal device that is installed in the network and an external device that is installed outside the network, and a notifying unit that notifies, when the determining unit determines that the packet is related to the communication between the internal device and the external device, the external device of an instruction to switch a gateway.

Abstract: [Object] To invalidate position information multiplexed into a moving image at high speed. [Solving Means] An imaging unit captures a moving image containing a plurality of images in a time-series order. A position acquisition unit acquires positions at which the plurality of images are captured. An offset calculation unit calculates, as an offset, a difference between a reference value that is any of the positions at which the plurality of images are captured and each of the positions to associate the offset with the image whose position is acquired. A metadata generation unit generates, as moving image metadata that accompanies the moving image, metadata containing the reference value and generates, as image metadata that accompanies the image corresponding to the offset, metadata containing the offset, for each of the acquired positions.

Abstract: A resource reservation apparatus reserving a resource on a second and third route connecting a start with end node of the first route over a network having a resource on a first route, includes a resource controller for defining a fourth route including a link obtained by excluding a common link between the first and second route and between the first and third route from a link included in the first, second or third route, a message generator for generating a message used for reserving a resource of the link included in the fourth route and transmitting the message to a node on the fourth route, and a message processor for transmitting a message used for generating the second and third route from the resource on the first route and on the fourth route reserved by the message generator to a node included in the second or third route.

Abstract: When a first transfer-device in a first network receives, from a first communication-device in the first network, a packet addressed to a second communication-device in a second network, the first transfer-device requests a location management server to provide first information identifying a second transfer-device that is included in the second network and operable to transfer the packet to the second communication-device. The location management server notifies at least one of transfer-devices in the first network of the first information. After the transfer-devices in the first network have been notified of second information identifying a third transfer-device that is included in the first network and coupled to the second transfer-device via a route whose state is relatively favorable, the third transfer-device transfers the packet to the second transfer-device via a communication tunnel coupling the third transfer-device with the second transfer-device.

Abstract: A router apparatus connecting a first network and a second network including a storage unit which stores association information associating an address of one of a plurality of second router apparatuses with an address of a corresponding one of a plurality of server apparatuses with an identical address, each of the plurality of second router apparatus connecting the first network to each of a plurality of third networks to which the respective plurality of server apparatuses is connected, a receiving unit which receives a packet transmitted from a terminal apparatus and transferred via the second network, an encapsulating unit which encapsulates the packet received into a packet with a destination address corresponding to the address of the second router apparatus associated with an address of the packet based on the association information, and a transmitting unit which transmits the packet encapsulated by the encapsulating unit to the first network.

Abstract: Provided is a relay system having a first node and a second node, and a third node and a fourth node provided opposing thereto with connected by VLAN paths, in which the first node notifies, via a second VLAN path, the fourth node of the APS packet in which a state of a first group is stored. The third node notifies, via a third VLAN path, the second node of the APS packet in which a state of a second group is stored. The second node and the fourth node use a fourth VLAN path and exchange the state of the first group and the state of the second group, and, when the states of the first group and the second group are SF-W of a first VLAN path and the self apparatus is master, switch the first VLAN path to the second VLAN path or the third VLAN path.

Abstract: A communication apparatus that couples to a core network in a network system including a first access network coupled to the core network via a first relay, and a second access network coupled to the core network via a second relay, the communication apparatus including: a processor to store, when a first packet is transmitted to a first destination address included in a first address range and not included in a second address range, cache information regarding the second address range to a memory, the first address range being assigned to the first access network and the second address range being assigned to the second access network and being included in the first address range, and a transmitter to transmit, when a second packet for a second address included in the second address range is generated, the second packer to the second apparatus based on the cache information.

Abstract: A video recording apparatus optimally records partial images made up of a partial area from an original image and containing a feature point such as person's face. An imaging unit acquires the original image by imaging at a resolution higher than the pixel count used for video recording. A feature point detector detects one or more feature points from the original image. A partial image clipper clips, from the original image, a partial image containing a feature point selected by the user. An encoder encodes the clipped partial image. A recording unit then records the encoded partial image to a recording medium. In so doing, the user is able to select a recording subject from a summary of detected feature points before or during video recording, and thus record a desired face.

Abstract: A communication control method of a communication system including a first communication device, a first relay device coupled to the first communication device via a first network which is a network domain where a message broadcast from the first communication device reaches and where communication based on physical addresses is performed, and a second communication device belonging to the same logical network to which the first communication device belongs, the communication control method including: broadcasting, by the first communication device, a first request including a logical address assigned to the second communication device and requesting a physical address assigned to the second communication device, transmitting, by the first relay device, in the event that the second communication device is not coupled to the first network, a first response which is a response to the first request and includes a predetermined physical address, to the first communication device.

Abstract: A ROADM device generates link information including a virtual link in which a first link that is used by a node apparatus for transmitting a signal and a second link of a ROADM device that is capable of branching a signal transmitted via the first link when the signal is transmitted via a WDM network are virtually connected each other, and transmits the generated link information.

Abstract: A communication apparatus stores therein link information indicating a network connection status of an entire hierarchical network, collects link information indicating a network connection status in its own area in predetermined cycles, and transmits the collected link information to another area assigned a level different from a level assigned to its own area. When receiving link information from another area assigned a different level, the communication apparatus determines whether the received link information is new link information newer than link information stored in a predetermined storage unit; when it is determined that the received link information is new link-information, the communication apparatus stores the new link information into the predetermined storage unit and advertises it in its own area; by contrast, when it is determined that the received link information is not new link-information, the communication apparatus discards the received link information without storing and advertising.

Abstract: A node apparatus in a ring network in which a protection path is provided that cycles around the ring network and transports a signal in a direction opposite to a signal transporting direction of the working path and in the event of a failure of the working path, a node apparatus adjacent to the failure loops back the signal flowing on the working path onto the protection path, the node apparatus comprising: allowable bandwidth storing unit which stores a maximum total bandwidth value, which represents the largest value among per-link total values of bandwidths that a plurality of working paths use on respective links connecting between the node apparatuses, as an allowable bandwidth for a shared path; and bandwidth control unit which controls the bandwidth of traffic flowing on the protection path, in accordance with the allowable bandwidth.

Abstract: A highly efficient protection path bandwidth management method is provided. When a protection path is set up in a loop with a node A as the starting point and endpoint in order to protect a working path, the bandwidth of the protection path is changed by transferring a bandwidth change request message, containing the identifier of the protection path as well as the value of the bandwidth after the change, so as to cycle once around the protection path set up in a loop starting from a node B that first received a PATH message for a working path.

Abstract: Tunnels are established between nodes along a packet transfer route in a communication network so that a packet is transferred from a first relay node to a second relay node via one or more intermediate relay nodes using the established tunnels. An intermediate relay node receives, from an adjacent downstream relay node, a reply message storing relay-node addresses identifying the downstream relay node and at least one intermediate relay node between the downstream relay node and the first relay node. The intermediate relay node establishes a tunnel to the downstream relay node in association with the relay-node address of the downstream relay node, updates the reply message by removing the relay-node address of the down stream relay node from the reply message, and transfers the updated reply message to an adjacent upstream relay node along the packet transfer route.

Abstract: An apparatus translates a destination address of a first packet that is transferred from an external communication device in an external network to an internal communication device in an internal network through the external network, from an external-network address that has been assigned to the internal communication device using an addressing scheme for the external network, to an internal address that has been assigned to the internal communication device using an addressing scheme for the internal network. The apparatus transmits, to another apparatus, address information including the external-network address and identifier information for identifying the external communication device where the another apparatus is configured to translate a source address of a second packet that is transferred from the internal communication device to the external communication device, from the internal address to the external address.

Abstract: When opposed communication transmitting apparatuses A and C are connected in a physical configuration thorough a communication transmitting apparatus B, if an interface configuration changing command is input to the communication transmitting apparatus B, the interface configuration is changed in the communication transmitting apparatus B and virtual connection is achieved such that the opposed communication transmitting apparatuses A and C pass through the communication transmitting apparatus B to directly connect an interface A1 and an interface C1. In this situation, since the GMPLS operation target apparatuses are only the communication transmitting apparatus A and the communication transmitting apparatus C and the communication transmitting apparatus B is a non-target apparatus of the GMPLS operation, the GMPLS scalability problem is solved and optical signals may be transferred at higher speed.

Abstract: A method for processing a control frame for controlling path protection switching between redundant paths including a working path and a protection path, which is executed at one of two node apparatuses coupled mutually via the redundant paths, the method comprising: at the time of switching of the redundant paths, stopping monitoring whether the control frame has been received via a previous working path which is the path used as the working path until the switching is completed; determining whether the other of the two node apparatuses has stopped transmitting the control frame via a new working path which is the path used as the working path after the switching is completed; and starting monitoring whether the control frame has been received via the new working path, when it is determined that the second apparatus has stopped transmitting the control frame via the new working path.

Abstract: An address translation device includes an address translation part containing information on correspondence between pseudo addresses and real addresses of a first network and a second network having respective address spaces independent of each other, the first network and the second network being connected by multiple address translation devices including the address translation device; an address translation request reception part configured to receive an address translation request with respect to a pseudo IP address contained in the address translation part; an address resolution response determination part configured to determine whether to respond to the address translation request in accordance with a predetermined rule based on the source address of the received address translation request; and a response part configured to respond to the address translation request based on the determination by the address resolution response determination part.

Abstract: An information processing apparatus retains topology information indicating how all nodes are connected in a predetermined target area within a network divided into plural areas. The information processing apparatus includes an ingress/egress determining unit that determines, by referring to connected area information indicative of which area an area border node is connected to, an ingress-node group and an egress-node group, a disjoint determining unit that determines, by referring to the topology information, whether two or more disjoint routes from a node(s) of the ingress-node group to reach a node(s) of the egress-node group are present, a summarized-information generating unit that generates summarized information indicating a route from the adjacent area through the target area to the other adjacent area according to determination result by the disjoint determining unit, and a summarized-information reporting unit that reports the summarized information to another area.