Abstract: In a motorcycle including a screen, a meter panel is arranged at the vehicle front of a rider, and a visor is arranged at the vehicle front of the meter panel. The visor is higher than the meter panel to form an air intake for taking in traveling wind between the visor and the meter panel. A duct extends to a rear side of the screen from the air intake at the vehicle rear of the visor, so that the duct can introduce traveling wind to the rear side of the screen.

Abstract: A transmission device includes: a signal receiving part configured to receive a time division multiplexing signal in which a plurality of packets are stored; a separating part configured to separate the plurality of packets from the time division multiplexing signal; an assigning part configured to assign an identifier corresponding to a stored position in the time division multiplexing signal to each of the plurality of packets; and a packet transmitting part configured to transmit at least two packets having different identifiers out of the plurality of packets through a common transmission path.

Abstract: When time synchronization between communication apparatuses is performed with PTP, a PTP packet storing a time stamp is transmitted/received. At that time, an RTC is provided in a PTP packet generation unit within the communication apparatus. An RTC is also provided in a PTP packet transmission unit. These RTCs are time-synchronized by a hardware operation based on PPS/System CLK. The RTCs of the PTP packet generation unit and the PTP packet transmission unit are time-synchronized, whereby a highly precise time stamp and correction value for a time can be obtained.

Abstract: A semiconductor device includes a monitor including a first element coupled between a first power supply line and a second power supply line, and a load for increasing a load value between the first element and the first power supply line or the second power supply line, and a determination unit which determines an operating state of the first element based on an output of the monitor.

Abstract: A packet transmission device includes first and second clocks, a communication unit, and first and second synchronization processing units. The communication unit transmits and receives a synchronization packet to and from an external time source device. The first synchronization processing unit synchronizes the first clock with the external time source device in accordance with time information of the synchronization packet. The second synchronization processing unit synchronizes the second clock with the first clock.

Abstract: An interface board includes a synchronizer that synchronizes a first time that is a time of the interface board to a base time based on a master synchronization signal that is supplied by an external master time source and that defines the base time. The interface board also includes a comparator that compares a phase of a first synchronization signal that synchronizes to the first time with a phase of a shared synchronization signal sent by an interface controller that controls the interface board, and a notifier that notifies another interface board of a comparison result of the comparator.

Abstract: A frame loss measurement device including a receiving unit which receives a measurement frame for measuring a communication path, a measurement unit which, based on the measurement frame received, measures performance of the communication path where the measurement frame is transmitted, and an allocation unit which secures resources of the frame loss measurement device to allocate to the measurement frame to be received.

Abstract: A packet switching system includes a forwarding processing unit determining a destination of an input packet by analyzing the input packet and outputting it as an output packet, the forwarding processing unit comprises an ingress interface card checking if the input packet has a sequential cyclic number and an egress interface card creating a sequential cyclic number and assigning it to the output packet.

Abstract: A routing apparatus couples to another routing apparatus using a trunk formed by a plurality of channels, and has a plurality of input and output cards to input and output frames. Each input and output card includes a management table registering a transmitting source address, destination information, and a trunk attribute indicating whether a channel used for a transmission has a trunk structure, a learning request part searching the management table using a transmitting source address within a frame that is transmitted via the channel, and generating and supplying learning request information having information that is obtained by searching the management table to another input and output card, if the channel used for the transmission has the trunk structure, and a registering part registering learning request information supplied thereto in the management table.

Abstract: A packet processing apparatus includes a plurality of communication connecting unit each connected with a communication partner apparatus using one of a work path and a protection path, connecting unit for connecting, using a data bus, the plurality of communication connecting unit with one another; determination unit for, when a packet sent from the communication partner apparatus is received by one of the communication connecting unit, determining whether the packet is a maintenance packet that is used for monitoring a connection state with the communication partner apparatus; and transmitting unit for, when it is determined that the packet is a maintenance packet by the determination unit, transmitting the maintenance packet to the plurality of communication connecting unit using the data bus via the connecting unit.

Abstract: A router controlling a route of packets. The router includes a counter counting an amount of received control packets on a user-identifier-by-user-identifier basis, the control packets being used for managing a network, a discard determining unit comparing a counter value of the counter with a threshold value, and a control packet discarding unit discarding a control packet including a user identifier for which the discard determining unit determines that the counter value exceeds the threshold value.

Abstract: In a communication apparatus, a collector collects a plurality of statistical data values describing communication activities, based on given user data frames, and produces statistics transmission data including the collected statistical data values and management data tags added thereto. A controller transfers, by using a direct memory access technique, the statistics transmission data produced by the collector. A memory stores the statistics transmission data transferred by the controller.

Abstract: When a data word is designated through a network search engine, a FIFO unit, and the like, a relay apparatus according to the invention searches for an associative memory address corresponding to the data word. Even when the associative memory address is internally converted to a contents memory address, the relay apparatus stores the contents memory address by causing it to correspond to a search result corresponding to the contents memory address as well as outputs the associative memory address together with the search result.

Abstract: An interface board includes a synchronizer that synchronizes a first time that is a time of the interface board to a base time based on a master synchronization signal that is supplied by an external master time source and that defines the base time. The interface board also includes a comparator that compares a phase of a first synchronization signal that synchronizes to the first time with a phase of a shared synchronization signal sent by an interface controller that controls the interface board, and a notifier that notifies another interface board of a comparison result of the comparator.

Abstract: A communication system that enhances the efficiency of network operations in response to a request for a transfer bandwidth increased locally. A physical links are installed at a span where a transfer bandwidth is locally increased in a network, and the physical links can cover the increased transfer bandwidth. A load sharing section regards the physical links as one virtual link called a link aggregation, and performs load sharing and outputs data to the plurality of physical links. A collecting section collects data transmitted through the plurality of physical links and outputs the data according to the destination of the data. Any nodes are connected by a link aggregation to configure an RPR ring network having non-uniform transfer bandwidth.

Abstract: A packet processing apparatus includes a plurality of communication connecting unit each connected with a communication partner apparatus using one of a work path and a protection path, connecting unit for connecting, using a data bus, the plurality of communication connecting unit with one another; determination unit for, when a packet sent from the communication partner apparatus is received by one of the communication connecting unit, determining whether the packet is a maintenance packet that is used for monitoring a connection state with the communication partner apparatus; and transmitting unit for, when it is determined that the packet is a maintenance packet by the determination unit, transmitting the maintenance packet to the plurality of communication connecting unit using the data bus via the connecting unit.

Abstract: A routing apparatus couples to another routing apparatus using a trunk formed by a plurality of channels, and has a plurality of input and output cards to input and output frames. Each input and output card includes a management table registering a transmitting source address, destination information, and a trunk attribute indicating whether a channel used for a transmission has a trunk structure, a learning request part searching the management table using a transmitting source address within a frame that is transmitted via the channel, and generating and supplying learning request information having information that is obtained by searching the management table to another input and output card, if the channel used for the transmission has the trunk structure, and a registering part registering learning request information supplied thereto in the management table.

Abstract: When a data word is designated through a network search engine, a FIFO unit, and the like, a relay apparatus according to the invention searches for an associative memory address corresponding to the data word. Even when the associative memory address is internally converted to a contents memory address, the relay apparatus stores the contents memory address by causing it to correspond to a search result corresponding to the contents memory address as well as outputs the associative memory address together with the search result.

Abstract: A packet switching system includes a forwarding processing unit determining a destination of an input packet by analyzing the input packet and outputting it as an output packet, the forwarding processing unit comprises an ingress interface card checking if the input packet has a sequential cyclic number and an egress interface card creating a sequential cyclic number and assigning it to the output packet.

Abstract: A router controlling a route of packets. The router includes a counter counting an amount of received control packets on a user-identifier-by-user-identifier basis, the control packets being used for managing a network, a discard determining unit comparing a counter value of the counter with a threshold value, and a control packet discarding unit discarding a control packet including a user identifier for which the discard determining unit determines that the counter value exceeds the threshold value.