142results about How to "Guaranteed normal forwarding" patented technology

The invention discloses a segment routing processing method, processing device and sending device capable of ensuring message sending when the length of a path is long. The method comprises the steps of calculating a strategic path from a source node to a destination node, assigning an unused ID to the strategic path, and sending mapping information of the strategic path and the ID to a forwarding node or sending mapping information of a strategic sub-path and the ID to the forwarding node. The segment routing processing device comprises a building module and a sending module. A segment routing message sending device comprises a receiving module and a forwarding module. Through carrying a part of the strategic path (i.e. the strategic sub-path) in a segment list and instructing forwarding of a subsequent node through the ID, the method ensures that a message can be forwarded to the destination node through segment routing when the length of the strategic path exceeds the stack processing capability of the forwarding node.

The invention provides a method and a device for issuing flow tables. The method and the device are applied to a software defined network (SDN) controller. The method includes setting corresponding first table item priority parameters for first flow table items after first flow table item issuing request messages submitted by switches are received; issuing first flow table items to the switches; comparing the priority of the first flow table items to the priority of second flow table items successfully issued to the switches when issued flow table overflow failure messages of the first flow table items transmitted by the switches are received, and acquiring the second flow table items with the priority inferior to the priority of the first flow table items; informing the switches of deleting the second flow table items and then issuing the first flow table items to the switches again. The method and the device have the advantages that the priority of service is set under the condition that hardware resources of the switches are used up, the service with the inferior priority is deleted, accordingly, the service with the superior priority can be assuredly normally forwarded, and the service transmission quality of an SDN can be improved.

Disclosed in the present application are a method and device for message forwarding. The method includes: an access device receives a first message which is an Ethernet message; the access device looks up a matched equal-cost path from equal-cost multi-path forwarding items, according to the destination MAC address of the Ethernet message, and the multi-path forwarding items include: the virtual MAC address corresponding to a gateway aggregation group, the identification of each gateway device in the gateway aggregation group and the out interface corresponding to the identification of each gateway device respectively; the identification is used for uniquely identifying the gateway device in a large layer 2 network; if N matched equal-cost paths are found, the first message is encapsulated as a second message according to the first path in the N matched equal-cost paths, and the second message which is a large layer 2 protocol message is forwarded according to the out interface of the first path; N is an integer larger than 1.

The invention discloses a data forwarding method, device and system which are used in a two-layer virtual private network system. The two-layer virtual private network system comprises provider edges (PEs) and a customer edge (CE), wherein the main PE and the backup PE form a cross-node redundancy group (RG). The method comprises the following steps: automatically establishing a data channel for link protection with the backup PE; monitoring a current data transmission link; and when the current data transmission link fails, performing data forwarding through the backup PE and the data channel for link protection. According to the invention, the link delay as well as the packet loss can be reduced.

The invention provides an industrial Ethernet in distributed control system, relating to the field of communication. The network comprises a plurality of nodes, and the nodes are subject to data packet transmission authority control by the token having data packet transmission authority. The system also realizes the functions of dual network redundancy, fast diagnosis and the like.

The invention relates to a routing protocol multi-instance parallel execution system and a parallel execution method thereof. The system includes a forwarding unit, protocol executing units and a central control unit. The forwarding unit is used for matching, modifying, forwarding, and counting and reporting IP data. The protocol executing units are used for routing protocol message processing and routing computation, and are used for sending routing computation results to the central control unit. The central control unit is used for managing the states of a plurality of the protocol executing units, distributing the data between the protocol executing units, maintaining the routing computation results in the protocol executing units, and carrying out selection on the routing computation results through strategy optimization and forwarding the selection result to the forwarding unit. In the invention, a system structure in which data forwarding is separated from the control is employed, and the plurality of routing protocol executing units are parallelly operated. A summary strategy is carried out on routing table information computed by the protocol executing units and is issued to a data forwarding surface. It is ensured that routing and forwarding functions are still normal when the single protocol executing unit is invalid or out of control.

The invention provides a method and device for sending messages and a communication system. The method comprises that a load sharing device obtains first mapping relation information, the first mapping relation information is used for indicating the mapping relation between a first MAC address and a second MAC address, the first MAC address is the MAC address of a communication device, the second MAC address is the MAC address of a first port, the first port is the port which is in a gateway device and is used for communicating with the load sharing device; when the received source MAC address field sent by the communication device carries the first data message of the first MAC address, the load sharing device changes the MAC address carried in the objective MAC address field of the first data message into the second MAC address according to the first mapping relation information, thus generating a second data message; and the load sharing device sends the second data message to the gateway device. The communication reliability can be improved.

The invention relates to a method for realizing IGMP snooping on a quadri-Ethernet port modem device. The method comprises configuring a control register in a switching module to add redundant information to a retransmitted Ethernet message, wherein the redundant information comprises a receiving port of the message, intercepting and analyzing whether the Ethernet message is an IGMP message or not, if the Ethernet message is the IGMP message, sending the IGMP message by a system to a network drive module which judges the type of the IGMP message, then adding retransmitted information to an IGMP Report message, and deleting retransmitted information to an IGMP Leave message. The IGMP snooping method realized on a quadri-Ethernet port modem device guarantees multicast messages to be retransmitted to an accurate port, thereby effectively avoiding the waste of the bandwidth of exchange chips, reducing the dependency of choosing the exchange chips, increasing the flexibility of selection on the exchange chips for Modem devices factories, and largely reducing the manufacturing cost, simultaneously the working property is stable and reliable, and the application range is relatively wide.

comprises the following steps of: receiving a first message including the business chain path information and the verification label information ; verifying whether the business path of the first message is tampered or not according to the verification label information and the business chain path information and obtaining a verification result; and processing the first message according to the verification result. By means of the scheme provided by the invention, the effect that the messages between the user equipment and the application platform can be transmitted according to the information of the business chain path which has not been tampered can be ensured, and the problem that the message is transmitted do not through a business driver of the selected business chain or through a business driver that is not in the selected business chain is avoided; therefore, the integrality of the business chain path can be ensured even though in an open cloud environment, the message is forwarded and processed according to the set business path is ensured, and the potential security risks are avoided.

The invention discloses a storage redundancy system of a high-speed Ethernet switching chip. The storage redundancy system comprises a plurality of transceiver modules, a GMAC module and a data caching module which are electrically connected in sequence, The plurality of GMAC modules are interacted with the control unit; The control unit is respectively interacted with the forwarding port judgmentmodule, the management unit and the frame analysis module; The frame analysis module interacts with the forwarding port judgment module through the address management module and the VLAN management module; According to the invention, the requirement of infinitely increasing the storage space of the chip is overcome, the risk of paralysis of the whole chip caused by port blocking is solved under the condition that the area of the chip is not obviously increased, the cost of the chip is reduced, and effective forwarding of exchange data is ensured. According to the storage redundancy design circuit structure, the risk of whole chip paralysis caused by port blocking is effectively solved, and effective forwarding of exchange data is guaranteed.

The embodiment of the invention discloses a routing method and device based on a satellite network. The method comprises the following steps: determining a main direction between a current node and a destination node by the current node according to a logic address relationship between the current node and the destination node; determining a next hop node of the current node on a data packet transmission path by the current node according to the main direction and a preset detection strategy and sending the data packet to the next hop node.

The invention provides a message processing method and device based on token buckets. The method includes the steps that a message to be forwarded is received, and target UE corresponding to the message to be forwarded is determined according to an internet protocol IP address of the message to be forwarded; service priority corresponding to the message to be forwarded is acquired, a target group token bucket which has the same service priority with the message to be forwarded is determined from token buckets of the target UE; according to the number of bytes of the message to be forwarded and the number of tokens in the target group token bucket, a forwarding policy for the message to be forwarded is determined; according to the forwarding policy, the message to be forwarded is forwarded or abandoned. By means of the message processing method and device, it can be guaranteed that messages with low priority cannot occupy resources of messages with high priority, forwarding of the messages with high priority is guaranteed, all types of UE is provided with the token buckets independently, the UE in a network does not affect one another in the message forwarding process, and QoS of multiple users and multiple services is guaranteed.

An embodiment of the present invention provides a method for releasing routing, and a virtual router redundancy protocol backup group and network. The virtual router redundancy protocol VRRP backup group includes: a VRRP member apparatus. A terminal apparatus accesses the virtual router redundancy protocol backup group using a switch and a two-layer network apparatus, and accesses a network side via the virtual router redundancy protocol backup group. A link failure detection technique is used to detect a link connection state between the VRRP member apparatus and the switch. Moreover, a target network segment is configured in the VRRP member apparatus as a VRRP backup group located network segment. The next one is a static routing message of an interface of the VRRP backup group, wherein the static routing message is ganged with the connecting state of the link. The VRRP member apparatus sends the static routing message to the network side. When an abnormal situation in the connecting state of the link happens, the static routing message becomes invalid due to being ganged with the connecting state of the link, and the VRRP member apparatus revokes issuing the static routing message to the network side.

The application discloses a method for sending narrow band link control update packets. The method comprises the following step: controlling the update packet sending quantity of an OSPF (Open Shortest Path First) protocol and adjusting an update packet sending rate to realize traffic smoothing of update packets. Through adoption of the technology disclosed by the invention, the stability of a routing protocol on a narrow band link can be enhanced on the basis of not influencing routing protocol functions; congestion of the packets on link equipment is avoided effectively; and normal receiving and sending of protocol packets and service data forwarding are ensured.

The invention discloses a method for updating a multicast routing table item in a multilink transparent internet network. The method comprises the steps as follows: when the RB detects that a link between an RB (routing bridge) and a multicast tree root of a multicast tree is not accessible, generating an SPF (shortest path first) tree by using the RB with the accessible link as a temporary tree root according to the recorded path information, and traversing the SPF tree, then generating and updating the multicast routing table item by using the multicast tree root. Based on the same inventive concept, the invention further discloses a device. When the link between the current RB and the multicast tree root is not accessible, the effective multicast table item can be quickly re-calculated so as to guarantee normal retransmission of multi-purpose messages.

The invention discloses a broadcast message processing method and a device and relates to the field of message transmission. The method comprises steps of: acquiring broadcast messages in one direction, analyzing the acquired broadcast messages to obtain message feature information of the broadcast messages, dividing the acquired broadcast messages into different types according to the message feature information, and carrying out rate inhibition on each broadcast message type. Through the above fine-grained message inhibition scheme, on one hand, the broadcast messages in the uplink or downlink direction can be effectively inhabited, and on the other hand, normal broadcast messages needed by various services can be ensured to be forwarded as much as possible while the broadcast storm is effectively inhabited.

The invention provides a control method for a flight path of an unmanned aerial vehicle. The method comprises the steps that the unmanned aerial vehicle is controlled to begin to fly from a starting point of the flight path, wherein multiple target points are arranged between the starting point and ending point of the flight path; a current position, current heading direction and current pre-arriving target point of the unmanned aerial vehicle are acquired; it is judged whether or not the included angle between the current heading direction and the current pre-arriving target point direction and the included angle between the current position and the current pre-arriving target point direction are in a preset range, if not, a linear velocity of the unmanned aerial vehicle is reduced, if yes, the distance between the current position and the pre-arriving target point is compared with the distance between the current position and other target points behind the current position, and according to the comparison result, a current actually arriving target point of the unmanned aerial vehicle is selected; the judgment is repeated until the unmanned aerial vehicle arrives at the ending point. The invention further provides a control device for the flight path of the unmanned aerial vehicle, electronic equipment and a readable storage medium.

The invention provides a drug transfer box with a monitoring management system and a monitoring management method thereof. The drug transfer box comprises a drug box, a refrigerator, a temperature and humidity sensor unit which collects temperature and humidity information in a drug box internal storage environment, an ARM controller module which is connected to the temperature and humidity sensor unit and controls the working of the refrigerator, a camera module which is connected to the temperature and humidity sensor unit and is used for collecting user information, a GPS module unit which collects the information of a geographic position where the drug box is located, and a main controller which is in a signal connection with the ARM controller module and the GPS module unit and carries out analysis processing and classification storage on the collected data, wherein the main controller is provided with a GPRS module and transmits generated data to a cloud server through a GPRS signal, and then a remote monitoring end carries out data extraction and monitoring. According to the system and the method, the storage space environment of the drug box can be ensured, the route of a whole transfer process can be monitored, and accidents in the transfer process are avoided.