77results about How to "Accurate forwarding" patented technology

The invention discloses a multi-process communication system and an establishment and communication method thereof. The multi-process communication system comprises a central process and multiple processes. The processes are connected to the central process in an IPC (internet process connection) manner. The central process writes communication connecting identifiers and process identifiers of the processes into a correspondence table. When one optional process of the processes serves as a sending process, sends data to another process, serving as a receiving process, and is different with the sending process, of the processes; the central process receives the data, finds out the communication connecting identifier of the receiving process from the correspondence table according to the process identifier of the receiving process and sends the data to the receiving process according to the communication connecting identifier of the receiving process. An emanative communication connecting structure is established among the multiple processes, so that data communication among the processes can be implemented without establishing a large amount of IPC instances among the processes.

The disclosure describes method and system for forwarding frames of a flow via a layer 2 forwarder and manipulator (L2FM) for improving network utilization and improving users experience by reducing the latency associated with the flow. When a new flow is identified, forward control information for frames of the new flow is obtained. The forward control information can include re-writing of at least one field in an original header of the frames of the new flow. At least one field in an original header of the frames of the new flow is manipulated according to the obtained forward control information, and the manipulated frames of the new flow are forwarded accordingly.

A method for forwarding multicast packets in a virtual private LAN includes: the VPLS VSI monitors PIM messages received by the interfaces and configures the L2 multicast route according to the messages; then the VPLS VSI forwards multicast packets according to the L2 multicast route configured. With the PIM Snooping function, the VSI may forward multicast packets precisely so that the bandwidth of an MPLS or IP network can be effectively saved and that the multicast replication pressure between PEs in the VPLS network and VC pseudowires in the VSI can be reduced.

A method and apparatus capable of forwarding notification or information related to a function, generated from a given device, to a user through a device near (or in proximity to) the user by interworking a plurality of electronic devices, are provided. An electronic device includes a communication interface and a processor. The processor is configured to obtain a first message related to notification from an external device, identify a target electronic device for notification output based on the location of a user and notification output performance of each of a plurality of electronic devices capable of communication with the electronic device, and transmit a second message related to the notification to the target electronic device so that the identified target electronic device outputs the notification.

The invention discloses a method for forming fine gathering gradient in the sensor network, which includes: A. It gathers node broadcasting and sends the clustering gradient broadcasting order packets. B. It receives the node i, analyzes the packet head, gets the sending node address ID, sends the node hop n, and records the sending node address ID and the node hop n in its neighbor list. C. The node i sets or updates their own hops, according to the existing neighbor information and their own hops, calculates gathering gradient, and transmits the broadcasting order packets. D. The node i continue to monitor channel, and repeats executing step B and C, until getting the local stabilization time Ts, stops monitoring, and forms finegathering gradient. The invention solves the problems of gradient without the regularity and the imbalance between the difference of node data transference form and data load.

The invention provides a multicast flow forwarding method and device. The method is applied to a two-layer switching device located at a multicast source end, and the method comprises the following steps: receiving unknown multicast flow sent by a forwarding chip; obtaining an exit port corresponding to a multicast group media access control layer MAC address of the unknown multicast flow; and establishing a two-layer multicast forwarding entry according to a corresponding relation of the multicast group MAC address and the exit port; issuing the two-layer multicast forwarding entry to the forwarding chip, so that the forwarding chip carries out two-layer forwarding on the unknown multicast flow according to the two-layer multicast forwarding entry. Therefore, by adopting the multicast flow forwarding method and device provided by the invention, the two-layer switching device located at the multicast source end obtains the multicast group MAC address and the exit port corresponding to the multicast flow, and the two-layer multicast forwarding entry is established according to the corresponding relation of the multicast group MAC address and the exit port and is issued to the forwarding chip, so that the multicast flow can be accurately forwarded to avoid flooding of the multicast flow in VLAN.

The invention provides a heterogeneous medium intercommunication system and method based on two-layer VPN, and its kernel: local PE is connected through two-layer switching device with at least a local CE, ARP agent in the local PE terminates ARP request of remote CE, does not sends any ARP response to the ARP request and learns ARP according to the ARP request; message transmission module in the local PE packs IP message in local CE message into MPLS message and transmits the MPLS message to remote PE, packs IP message in remote CE message transmitted by the remote PE into two-layer Ethernet message, and transmits the two-layer Ethernet message to the local CE according to the ARP information learnt by the ARP agent. And the invention implements enterprise network remote interconnection for medium-sized and small enterprises, especially applied to hub-spoke-like point-to-point heterogeneous medium intercommunication, achieving the purpose of point-to-point two-layer VPN-based heterogeneous medium intercommunication of two-layer broadcasting networks.

The invention discloses a stack system and a message forwarding method thereof. In each stack equipment, a multicast table entry of a corresponding interface board is arranged for each stack port of all stack equipment respectively, an index which indicates the stack port and can be carried in a stack protocol message is arranged in the multicast table entry of the corresponding interface board; wherein the multicast table entry of the interface board corresponding to the stack port on each side of the equipment is used for transmitting the stack protocol message through the stack port of the equipment; multicast table entries of interface boards corresponding to each stack port of other equipment are used for reporting the received stack message to CPU, or duplicating and forwarding the stack message while reporting to the CPU. Therefore, the interface board of each stack equipment can use the corresponding multicast table entry of the interface board from the corresponding stack port to correctly transmit the stack protocol message according to the index indicating the stack port of the equipment in the stack protocol message; the corresponding multicast table entry of the interface board can be used for correctly reporting and continuously forwarding according to the indexes indicating the stack ports of other equipment in the received stack protocol message.

The invention provides an EPON (Ethernet passive optical network) device containing a power carrier module, which comprises an optical transceiver, an EPON ONU (optical network unit), a multi-port Ethernet switch unit, RJ-45 Ethernet ports and a power carrier module, wherein the device ensures network access equipment to access the internet via a power cable in the same ammeter range. The invention also discloses a signal transmission method of the EPON device containing a power carrier module. The device and the method have the beneficial effects of facilitating broadband access and use of users and having convenience by adopting the power cable for power supply to transmit Ethernet data.

A network element of a software-defined networking (SDN) system forwards IP packet fragments without reassembly is disclosed. The network element receives an IP packet fragment and determines whether the fragment is the first fragment of an original IP packet. If the fragment is the first fragment, then fields in the first fragment that are associated with open systems interconnection layers (OSI) 4-7 are retrieved and placed in an entry in a fragment information table so that the entry is associated with the original IP packet. If the received fragment is not the first fragment, then a matching entry in the fragment information table is to be identified and the associated OSI layers 4-7 information is retrieved for processing the non-first fragment.

The invention provides a stack splitting processing method and a switch. The method comprises steps: when splitting happens to stack, a first switch sends first configuration information of the first switch to a second switch via a third switch outside the stack, wherein the first configuration information at least comprises a first field identifier of the first switch and a first stack identifier of the first switch; the first switch receives second configuration information of a second switch via the second switch, wherein the second configuration information at least comprises a second field identifier of the second switch and a second stack identifier of the second switch; and when the first field identifier and the second field identifier are the same, and the first stack identifier and the second stack identifier meet preset conditions, service ports on the first switch are closed. A routing calculation chaos problem after stack splitting can be solved.

The method comprises: using the character string whose adjacent bit is different as the resource object ID and the node ID; using the 'ID left shifting' and topological relation invariant to construct regular organization neighboring relation; when node is added or quits, using a 'locally optimizing' dynamical balance mechanism to release the resource object to the node whose node ID is its prefix; when the resource location message is replayed, it is executed according the ' ID left shifting' and 'postfix matching' rule.

The invention discloses a message forwarding method, a service chain agent apparatus and an agent device. The service chain agent apparatus, upon receiving a message containing service chain path information, processes the message of a user, adds check information to a user message for checking a next-hop path, transmits the check information to a current object service capacity node; receives the user message processed by the object service capacity node, acquires the check information added previously from the user message, based on the check message, finds a next-hop path, and based on the next-hop path, continuously forwards the user message. According to the invention, the service chain agent apparatus transmits the user message to a corresponding service function node only after adding the check information for finding the next-hop path to the user message, such that the service chain agent apparatus can accurately acquire the next-hop path information based on the check information of the user message even when the original IP and port of the user message are modified by the service function node, and accurately forwards the user message.

The invention discloses a message forwarding method of VSDs (virtual switch devices) in a VSU (virtual switch unit) and member devices of the VSU. Stack links are arranged among interface boards distributed on different member devices of at least one VSD in the VSU, after the interface boards connected with the stack links receive unicast messages of the interface boards disconnected from the stack links and belonging to different VSDs from the same member device, the unicast messages are transmitted by the stack links when the destination addresses of the unicast messages are the interface boards disconnected from the stack links and belonging to the different VSDs in another member device, and after the interface boards connected with the stack links receive the unicast messages through the stack links, the unicast messages are transmitted according to the destination addresses of the unicast messages when the destination addresses of the unicast messages are the interface boards disconnected from the stack links and belonging to the different VSDs in the same member device.

The invention discloses a message forwarding method and device in a virtual switching unit (VSU) system and network equipment. According to the method, a single-cast route between any member equipment serving as inlet equipment and another member equipment serving as outlet equipment is set to be coincident with a multicast route; and when forwarding equipment forwards a single-cast message according to the multicast route, the message can be correctly forwarded, and the forwarded single-cast message cannot be lost in the VSU system; therefore, the problem that the single-cast message is lost because the forwarding equipment in the VSU system forwards the single-cast message according to the multicast route in the prior art can be solved.

The invention discloses a method and a device for improving the performance of data forwarding of the WAN Bridge. The invention comprises the processes that the corresponding address learning items are set in a forwarding table after the WAN bridge receives the data packets; when the WAN bridge forwards the data packets, the WAN bridge first judges the type of the data packets; if the data packets are uni-packets, the WAN bridge determines the forwarding path of the data packets to be sent by querying the address learning items in the forwarding table so as to further forward the data packets according to the forwarding path. Compared with the prior art, the data forwarding mechanism of the invention effectively improves the performance of data forwarding of the WAN bridge with a simpler principle for operation and an easier method for implementation. With respect to the processing of the data packets, the invention realizes the transition from forwarding all data packets blindingly to all link accesses in the prior art to precise forwarding via the forwarding path of data packets determined by the invention, and particularly shows obvious improvement in data forwarding performance of the WAN bridge when a large number of the shared-links exist.

The disclosure relates to a method and device for processing an incoming message of a multimode controller, and a multimode controller, wherein the method includes: a multimode controller receives the incoming message from an abutting network element, and parsing the incoming message to construct an N-primitive message; a service standard type of the incoming message is obtained according to the N-primitive message; and the N-primitive message is processed according to the service standard type. By adding a protocol enhancement module, which obtains a service standard type of a message, between an SCCP protocol module and standard RNSAP protocol modules, the disclosure assists the SCCP protocol module and the RNSAP protocol modules in correctly and quickly establishing a corresponding relationship, saves software maintenance cost, makes up shortages of current SCCP and RNSAP protocols when supporting the multimode controller, and realizes to a function of processing signalling according to standards. Furthermore, when being only configured as a single mode or presenting in the manner of multimode, the multimode controller needs not to be modified functionally, and can accurately forward a signalling to a corresponding standard of wireless network control service layer to process.

The embodiment of the invention discloses a method and a device for determining a forwarding path in a multi-topology structure. The method comprises the following steps: whether each broadcast network has ISs containing a topology supported by all ISs in the broadcast network is judged; if the broadcast network has ISs containing a topology supported by all the ISs in the broadcast network, an IS is optionally selected from the ISs supported by all the ISs in the broadcast network as a DIS, and the DIS separately sends IS accessibility TLVs of the topologies to all the topologies in the broadcast network; if the broadcast network does not have ISs containing a topology supported by all the ISs in the broadcast network, a DIS is selected for each topology in the broadcast network, and the DIS of each topology issues the IS accessibility TLV of the topology; and when the DIS sends a non-pseudo node LSP, each topology independently adds DIS information reaching the topology in the IS accessibility TLV thereof so as to determine a forwarding path of data in the topology according to the DIS information reaching the topology. According to the embodiment of the invention, the data in each topology is enabled to be correctly forwarded.

The invention discloses a message forwarding method and device, and the method comprises the steps: determining a fragmentation type corresponding to a fragmentation message for each fragmentation message; and if it is determined that the fragmented message is the first fragmented message, determining a storage address corresponding to the fragmented message according to the basic message data carried in the fragmented message and storing the storage address; if the fragmented message is determined to be a subsequent fragmented message, determining a storage address of a first fragmentation message corresponding to the fragmentation message as a target storage address according to the basic message data carried in the fragmentation message, and forwarding the fragmentation message according to a message destination port carried in the first fragmentation message corresponding to the fragmentation message inquired from the target storage address. Since the basic message data of the subsequent fragmented message is the same as the basic message data of the corresponding first fragmented message, the message destination port of the first fragmented message corresponding to the subsequent fragmented message can be queried according to the basic message data, so that the subsequent fragmented message can be correctly forwarded.

The invention provides a table entry generation method and device, and the method comprises the steps: forwarding a data message transmitted by opposite-end network equipment to a first host through an aggregation port when the data message is received through a first tunnel; adding a forwarding table entry in a forwarding table of a first distributed gateway, the destination address of the forwarding table entry being the address of a second host, and the egress port of the forwarding table entry being the tunnel identifier of the first tunnel; and sending a table entry synchronization message to a second distributed gateway, the table entry synchronization message comprising the address of the second host and the tunnel information of the first tunnel, so that the second distributed gateway adds the forwarding table entry to a forwarding table of the second distributed gateway according to the table entry synchronization message. According to the technical scheme of the embodiment ofthe invention, after the first distributed gateway or the second distributed gateway receives the data message through the aggregation port, the data message is sent based on the forwarding table entry, so that the data message is correctly forwarded.

The invention provides an unmanned aerial vehicle multi-target measurement and control device and method. The unmanned aerial vehicle multi-target measurement and control device comprises n unmanned aerial vehicle flight control machines, n airborne Beidou terminals with timing sending modules, a Beidou satellite, a Beidou satellite ground center station, a ground Beidou terminal with a card number port mapping module and n ground control tables. According to the invention, the timer module is added in the airborne Beidou terminal, and the last frame of telemetry information in the period is sent in a timing manner, so that the telemetry information can be transmitted with the highest efficiency and real-time performance in an SIM card level limiting range.

The invention provides a method for forwarding data. The method is applied to access layer switching equipment. In this method, first access layer switching equipment receives the first data packet through a target second port, wherein the first data packet carries a first identifier used for indicating second access layer switching equipment; wherein the second access layer switching equipment isconnected with a destination server of the first data packet; therefore, the first access layer switching equipment can determine a target first port connected with the second access layer switchingdevice through the core layer switching device according to the first identifier, furthermore, the first data packet can be sent to the second access layer switching equipment through the target firstport via the core layer switching equipment, so that the port for sending the first data packet does not need to be determined based on the indication of the centralized controller, and the data forwarding performance of the access layer switching equipment can be improved.