摘要:
A packet relay method and device in which even in the presence of a relay device between transmitting and receiving devices, a normality of a protection route can be surely confirmed is provided; A specific source address or destination address are registered, and when a route normality confirmation packet having the source address or destination address is received, the packet is transmitted to a protection route regardless of a hash operation; The registering can include link aggregation information in addition to the source address or destination address and the transmitting is made when the route normality confirmation packet consistent with both of the source address or destination address and the link aggregation information is received.
摘要:
A packet relay method and device in which even in the presence of a relay device between transmitting and receiving devices, a normality of a protection route can be surely confirmed is provided; A specific source address or destination address are registered, and when a route normality confirmation packet having the source address or destination address is received, the packet is transmitted to a protection route regardless of a hash operation; The registering can include link aggregation information in addition to the source address or destination address and the transmitting is made when the route normality confirmation packet consistent with both of the source address or destination address and the link aggregation information is received.
摘要:
Path changeover method and device are provide in which a communication interruption time caused by occurrence of a transmission failure is shortened. On a frame receiving side, address information of a frame received from a first physical port is stored in a table in association with the first physical port. When detecting that a frame stored with the same address information as the address information stored in the table is received at a second physical port, the frame received at the second physical port is captured and following frames received at the first physical port are discarded.
摘要:
A wide area network is constructed by connecting a plurality of bases to a multipoint switching apparatus. Each base has a certain contracted communication band. If a packet is received from a first base having a higher contracted communication band and the packet is directed to a second base having a lower contracted communication band, the traffic from the first base is limited to the contracted communication band of the second base.
摘要:
A best-effort bandwidth allocating method, includes the steps of: measuring sending amounts of packet data that are input from each of ports providing minimum bandwidth guarantee type and best-effort type communication service; calculating statistical information corresponding to an accounting subject time period of the sending amounts of the packet data of the best-effort bandwidth of each of the ports, based on the result of the measurement; changing a value of a peak information rate of a port sending out more of the packet data at a contracted communication rate to be low based on the statistical information; and impartially allocating the best-effort bandwidth to each of the ports based on the value of the peak information rate and a minimum bandwidth guarantee rate.
摘要:
A network switch apparatus which receives data at physical input ports and outputs the data from a plurality of link-aggregated physical output ports includes a distribution processing unit configured to receive data input at one of the physical input ports and to assign the input data to one of the physical output ports for outputting therefrom such that the one of the physical output ports is determined according to part of the input data, and a queue utilization monitoring unit configured to monitor a utilization rate of a queue provided separately for each of the physical output ports and to send an alarm to the distribution processing unit in response to the utilization rate of the queue exceeding a predetermined threshold, wherein the distribution processing unit is configured to assign the input data to the one of the physical output ports for which the alarm is not reported.
摘要:
A wide area network is constructed by connecting a plurality of bases to a multipoint switching apparatus. Each base has a certain contracted communication band. If a packet is received from a first base having a higher contracted communication band and the packet is directed to a second base having a lower contracted communication band, the traffic from the first base is limited to the contracted communication band of the second base.
摘要:
A communication apparatus includes a setting information storage section for storing band information set on each port, a continuity test signal transmitting section for receiving a continuity test request for testing a connection state of a connected network, and transmitting a continuity test signal to a destination port on the transmission path, a setting information obtaining section for obtaining the band information set on a port receiving the continuity test signal from the setting information storage section, a continuity response signal transmitting section for responding a continuity response signal added the band information obtained from the setting information obtaining section to the continuity test signal, to the port having transmitted the continuity test signal, and a setting information notification section for notifying the band information added to the continuity response signal to a node for managing the network.
摘要:
A method is disclosed including: measuring sending amounts of packet data that are input from each of ports providing minimum bandwidth guarantee type and best-effort type communication service; calculating statistical information corresponding to an accounting subject time period of the sending amounts of the packet data of the best-effort bandwidth of each of the ports, based on the result of the measurement; changing a value of a peak information rate of a port sending out more of the packet data at a contracted communication rate to be low based on the statistical information; and impartially allocating the best-effort bandwidth to each of the ports based on the value of the peak information rate and a minimum bandwidth guarantee rate.
摘要:
A large scale network comprising a network management system (11) being provided with a timer (8), wherein a network element directs a link up or link down to one port of the network element (12, 13) from the network management system and, after that, if a message indicating that the link up or link down is complete is received from a different port from a port from which the link up or link down has been directed within a predetermined time by the timer after an issuance of the link up or link down directions, the maintainer (7) of the network management system recognizes a physical connection between the port from which the link up or link down has been directed and a port from which the message has been sent to the network management system, whereby large scale network can be provided in which a maintainer of a network management system can easily confirm a link connection between network elements.