Abstract: A user terminal positioning method is used in an edge cloud server, and includes: receiving satellite positioning information sent by a user terminal; determining a location service area in which the user terminal is located; on the basis of the location service area, acquiring a differential correction model corresponding to the location service area from a public cloud server; using the satellite positioning information and the differential correction model to implement location calculation to obtain location information of the user terminal; and sending the location information to the user terminal.

Abstract: The present disclosure discloses a congestion control method, a terminal and a readable storage medium. The congestion control method includes: identifying, in response to that a congestion phenomenon occurs in data transmission of a downstream device, a congestion flow causing the congestion phenomenon; acquiring identification information of the congestion flow, and packaging the identification information in a congestion control notification message; and sending the congestion control notification message to an upstream device that performs a congestion control operation according to the congestion control notification message.

Abstract: Provided are a service function chain detection path method and device. The method comprises: sealing a sending service function chain path identifier and a returning service function chain path identifier in a message header, and obtaining a service function chain detection message, the sending service function chain path identifier being used for indicating a path of the service function chain detection message, the returning service function chain path identifier being used for indicating a path of a service function chain detection reply message corresponding to the service function chain detection message; sending the service function chain detection message; receiving the service function chain detection reply message, the service function chain detection reply message comprising returning path information, the returning path information being used for indicating a service function chain path of the service function chain detection message during sending.

Abstract: A method, device and system for message forwarding are provided. The method may include the following acts. A second device in a second domain receives a first message from a first domain. The second device allocates, for the first message, a second Service Function Path Identifier (SFPID) corresponding to a Service Function Chain (SFC) in the second domain, and obtains a second message. The second device sends the second message to one or more other devices, except the second device, in the second domain.

Abstract: The present disclosure provides a packet transmission method and apparatus. The method includes: a classifier receiving a first packet; the classifier determining a first service function (SF) to which the first packet is to be transmitted; the classifier adding an address of the first SF to the first packet, obtaining a second packet; and the classifier transmitting the second packet to a network virtualization edge (NVE) node.

Abstract: Provided are a method for load balancing of a Service Function Chain (SFC), a Service Function forwarder (SFF), a classification device, a controller and an SFC system. The method includes: an SFF receives a packet, herein an SFC header of the packet carries a Service Function Chain Flow Identifier (SFCFID); and the SFF forwards the packet in a load balancing path according to the SFCFID carried in the SFC header of the packet.

Abstract: Provided are a service function chain detection path method and device. The method comprises: sealing a sending service function chain path identifier and a returning service function chain path identifier in a message header, and obtaining a service function chain detection message, the sending service function chain path identifier being used for indicating a path of the service function chain detection message, the returning service function chain path identifier being used for indicating a path of a service function chain detection reply message corresponding to the service function chain detection message; sending the service function chain detection message; receiving the service function chain detection reply message, the service function chain detection reply message comprising returning path information, the returning path information being used for indicating a service function chain path of the service function chain detection message during sending.

Abstract: The present disclosure provides a packet transmission method and apparatus. The method includes: a classifier receiving a first packet; the classifier determining a first service function (SF) to which the first packet is to be transmitted; the classifier adding an address of the first SF to the first packet, obtaining a second packet; and the classifier transmitting the second packet to a network virtualization edge (NVE) node.

Abstract: A method, device and system for message forwarding are provided. The method may include the following acts. A second device in a second domain receives a first message from a first domain. The second device allocates, for the first message, a second Service Function Path Identifier (SFPID) corresponding to a Service Function Chain (SFC) in the second domain, and obtains a second message. The second device sends the second message to one or more other devices, except the second device, in the second domain.

Abstract: The embodiment of the present document provides a collaboration method in a distributed resilient network interconnected system, including: a link aggregation control protocol (LACP) system receiving system parameters notified by a distributed relay control protocol (DRCP) system, and using the system parameters of the DRCP system as system negotiation parameters of the LACP system. The embodiments of the present document further provide a link aggregation control protocol (LACP) system, wherein the LACP system includes a receiving module and a controlling module, the receiving module is configured to receive system parameters notified by a distributed relay control protocol (DRCP) system; the controlling module is configured to take the system parameters of the DRCP system as system negotiation parameters of the LACP system. The embodiment of the present document achieves a collaboration between the LACP system and the DRCP system.

Abstract: Provided are a method for load balancing of a Service Function Chain (SFC), a Service Function forwarder (SFF), a classification device, a controller and an SFC system. The method includes: an SFF receives a packet, herein an SFC header of the packet carries a Service Function Chain Flow Identifier (SFCFID); and the SFF forwards the packet in a load balancing path according to the SFCFID carried in the SFC header of the packet.

Abstract: A method, device and system for implementing bidirectional traffic on the same path in an aggregation group are provided, wherein the method includes that a portal of an LAG receives indication information sent by an opposite end of the LAG, wherein the indication information carries port indexes of the opposite end and/or a traffic distribution method of the opposite end; the portal determines port indexes of the portal and/or traffic distribution method of the portal according to the indication information; the portal distributes traffic according to the determined port indexes and/or traffic distribution method The disclosure solves a technical problem in the prior art that port protection cannot be implemented due to the inability to ensure that traffic of the same service can be transmitted on the same aggregation link, thus effectively ensuring that the same service selects the same aggregation link bi-directionally on two ends of an aggregation group and implementing the technical effect of protection

Abstract: The disclosure discloses a method and device for information processing. In the method, information, which is notified by a Network Virtualization Edge (NVE), about a terminal connected to the NVE and information, which is notified by the NVE, about a connection between the NVE and the terminal is received; and according to the information about the terminal and the information about the connection, a corresponding operation is executed.

Abstract: Disclosed are a method and system for information interaction between systems in a same portal in a distributed resilient network interconnection, wherein the method is applied to each system in an portal in a link aggregation group, including: sending a distributed relay control protocol (DRCP) message through an intra-portal interface, wherein at least system information of a present system is carried; after receiving a DRCP message sent by an adjacent system, if it is determined that the present system and the adjacent system can form one portal in the distributed resilient network interconnection, determining an operational Key value of the present system. The system includes: a sending state machine, a receiving state machine, a negotiating state machine, a synchronizing state machine and a periodic sending state machine.

Abstract: Provided are a method and device for negotiating a traffic path in an LAG, wherein the method includes that an aggregation port acquires indication information, wherein the indication information is used for indicating one or more groups of services or sessions needing to be borne by the aggregation ports, each group of the services or sessions includes one or more services or sessions; the aggregation port determines multiple groups of services or sessions to be borne, and/or services or sessions currently being borne by the aggregation port; an aggregation group portal to which the aggregation port belongs, performs traffic distribution according to services or sessions currently being borne by each aggregation port which belongs to the aggregation group portal. It is solved the problem in the related art that the same service or session cannot be transmitted bi-directionally on the same path, thus implementing the protection on the interconnect interface.

Abstract: The disclosure provides a method and system for implementing a resilient network interface and interconnection. The method includes: aggregating one or multiple aggregation ports on one or multiple nodes into one DLAG; and implementing a distributed resilient network interface by the DLAG. Through the disclosure, the problem that the existing ring network and other protection technologies cannot ensure normal transmission of traffic in an arbitrary network is solved, thereby effectively ensuring normal operation of a service in the network and improving the reliability of the network interface and the utilization rate of the link.

Abstract: A method, system and controlling bridge (CB) for acquiring port extension (PE) topology information, and a method and system for processing an upstream port, wherein, the method for acquiring the port extension (PE) topology information includes: a CB receiving a link layer discovery protocol (LLDP) message sent by the PE, and perceiving an attachment of the PE; the CB receiving Extended Port Create message sent by the PE, and instantiating corresponding instantiated ports inside the CB. By adopting the above-mentioned technical scheme, the topology information of the PE connected to the CB can be obtained and a channel for forwarding data can be established, effectively.

Abstract: Disclosed are a multicast data forwarding method and device supporting a virtual terminal. The method includes: a bridge forwarding module receiving multicast data sent by an end station and determining output ports; when a certain output port is the same with the input port of the multicast data and the input port has enabled reflective relay function, not carrying Ingress extended channel identifier (Ingress_E-CID) in the forwarded message information or the value of the Ingress_E-CID being zero. By modifying the source port filtering mechanism, the present invention enables a Port Extender (PE) supporting the virtual terminal technology to transmit and receive data normally while multicasting.

Abstract: The embodiment of the present document provides a collaboration method in a distributed resilient network interconnected system, including: a link aggregation control protocol (LACP) system receiving system parameters notified by a distributed relay control protocol (DRCP) system, and using the system parameters of the DRCP system as system negotiation parameters of the LACP system. The embodiments of the present document further provide a link aggregation control protocol (LACP) system, wherein the LACP system includes a receiving module and a controlling module, the receiving module is configured to receive system parameters notified by a distributed relay control protocol (DRCP) system; the controlling module is configured to take the system parameters of the DRCP system as system negotiation parameters of the LACP system.

Abstract: Disclosed are a method and system for information interaction between systems in a same portal in a distributed resilient network interconnection, wherein the method is applied to each system in an portal in a link aggregation group, including: sending a distributed relay control protocol (DRCP) message through an intra-portal interface, wherein at least system information of a present system is carried; after receiving a DRCP message sent by an adjacent system, if it is determined that the present system and the adjacent system can form one portal in the distributed resilient network interconnection, determining an operational Key value of the present system. The system includes: a sending state machine, a receiving state machine, a negotiating state machine, a synchronizing state machine and a periodic sending state machine.