WO2023174339A1

WO2023174339A1 - Multicast service sending method, apparatus, system and storage medium

Info

Publication number: WO2023174339A1
Application number: PCT/CN2023/081648
Authority: WO
Inventors: 孔小桃; 袁硕; 牛承光; 段方红
Original assignee: 华为技术有限公司
Priority date: 2022-03-18
Filing date: 2023-03-15
Publication date: 2023-09-21
Also published as: CN116806011A

Abstract

The present application belongs to the field of communications. Disclosed are a multicast service sending method, an apparatus, a system and a storage medium. The method comprises: a first UP device receiving a migration instruction, the migration instruction being used for giving an instruction to migrate a first terminal to the first UP device, the first terminal being a terminal getting online on a second UP device; on the basis of the migration instruction, the first UP device sending a query request to the first terminal; the first UP device receiving a query response sent by the first terminal on the basis of the query request, the query response comprising multicast information corresponding to the first terminal; and on the basis of the multicast information, the first UP device forwarding a multicast service to the first terminal. The present application ensures that the multicast service can be forwarded to the terminal.

Description

Methods, devices, systems and storage media for sending multicast services

This application claims priority to the Chinese patent application with application number 202210273189.6 and the invention title "Method, device, system and storage medium for transmitting multicast services" submitted on March 18, 2022, the entire content of which is incorporated by reference in in this application.

Technical field

The present application relates to the field of communications, and in particular to a method, device, system and storage medium for sending multicast services.

Background technique

Broadband gateway access systems that adopt a control plane (CP) and user plane (UP) separation scheme generally include: CP equipment and multiple UP equipment. The CP device can manage multiple UP devices.

Among them, the CP device can control the terminal to go online from a certain UP device after authenticating the terminal through the remote authentication dial in user service (RADIUS) server. That is, the UP device can forward services belonging to the terminal to connect the terminal to the network.

The terminal can use the UP device to join the multicast group, and the UP device forwards the multicast service of the multicast source multicast corresponding to the multicast group to the terminal. However, if the UP device fails, the multicast service cannot be forwarded to the terminal.

Contents of the invention

This application provides a method, device, system and storage medium for sending multicast services to ensure that multicast services can be forwarded to terminals. The technical solutions are as follows:

In a first aspect, this application provides a method for sending multicast services. The method is applied to the first user plane UP device in the virtual broadband access gateway vBNG system. The vBNG system also includes a second UP device. In the In the method, the first UP device receives a migration instruction. The migration instruction is used to instruct the first terminal to migrate to the first UP device. The first terminal is a terminal that is online on the second UP device. The first UP device sends a query request to the first terminal based on the migration instruction. The first UP device receives a query response sent by the first terminal based on the query request, where the query response includes multicast information corresponding to the first terminal. The first UP device forwards the multicast service to the first terminal based on the multicast information.

When the first UP device receives a migration instruction for instructing to migrate the first terminal, the first UP device sends a query request to the first terminal based on the migration instruction, and receives a query response sent by the first terminal based on the query request. The query response Includes multicast information corresponding to the first terminal. That is to say, the first UP device actively queries the multicast information corresponding to the multicast group joined by the first terminal through the query request based on the migration instruction. After querying the multicast information, it forwards the multicast to the first terminal based on the multicast information. service, thereby automatically restoring the multicast service and ensuring that the multicast service can be forwarded to the first terminal normally.

In a possible implementation manner, the multicast information is multicast information corresponding to the first multicast source, and the multicast group corresponding to the first multicast source is a multicast group joined by the first terminal. Since the multicast group corresponding to the first multicast source is a multicast group joined by the first terminal, the multicast service forwarded by the first UP device to the first terminal based on the multicast information is the service requested by the first terminal, ensuring that Automatically resume the multicast service requested by the first terminal.

In another possible implementation manner, the multicast information includes the multicast address of the first multicast source.

In another possible implementation, the first UP device obtains the first user entry information based on the migration instruction, The first user entry information is used to transmit services of the first terminal. Since the first UP device obtains the first user entry information, it is guaranteed that the multicast service can be successfully forwarded to the first terminal based on the first user entry information.

In another possible implementation, the migration instruction includes: the device identification of the second UP device, the interface identification of the first interface, or the virtual media access control layer MAC address of the first interface, and the first interface is the first interface. The interface through which a terminal goes online on the second UP device. In this way, the first UP device can obtain the first user entry information based on the device identifier of the second UP device, the interface identifier of the first interface, or the virtual MAC address of the first interface. In this case, the CP device needs to migrate the second UP device. When a terminal is installed on the device, it is not necessary to obtain user entry information, but directly sends a migration instruction to the first UP device. Since the migration instruction does not include user entry information, the migration instruction can be sent quickly and the occupation of network resources is reduced.

In another possible implementation manner, the migration instruction includes first user entry information, and the first user entry information is used to transmit services of the first terminal. Since the migration instruction includes the first user entry information, it is convenient for the first UP device to obtain the first user entry information and the algorithm implementation complexity is simplified.

In another possible implementation, the first UP device receives the migration instruction sent by the CP device.

In another possible implementation manner, both the query request and the query response are messages encapsulated based on the Internet Group Management Protocol IGMP, or both the query request and the query response are messages encapsulated based on the Multicast Listener Discovery Protocol MLD.

In another possible implementation, the first UP device and the second UP device are located in the same power supply group, or the first UP device and the second UP device are located in different power supply groups, and the power supply group includes multiple UP devices. .

Among them, for the situation where the first UP device and the second UP device are in different power supply groups, when the power supply group where the second UP device is located is powered off, since the first UP device and the second UP device belong to different power supply groups, the first UP device and the second UP device belong to different power supply groups. There is no power outage in the power supply group where the UP device is located. In this way, the first terminal is migrated to the first UP device to ensure that the first terminal can go online from the first UP device.

In the second aspect, this application provides a method for sending multicast services, which method is applied to the first user plane UP device in the virtual broadband access gateway vBNG system. The vBNG system also includes a second UP device. In the above method, the first UP device receives the multicast information corresponding to the first terminal sent by the second UP device, and the first terminal is a terminal online on the second UP device. The first UP device receives a migration instruction, which is used to instruct the first terminal to migrate to the first UP device. The first UP device forwards the multicast service to the first terminal based on the multicast information and the migration instruction.

Since the first UP device receives the multicast information corresponding to the first terminal sent by the second UP device, when the first UP device receives the migration instruction for instructing to migrate the first terminal, the first UP device based on the migration instruction and the The multicast information forwards the multicast service to the first terminal, that is, the UP device on which the terminal is online actively sends the multicast information corresponding to the terminal to other UP devices, so that when the UP device fails, other UP devices can automatically restore multicast services. It is ensured that the multicast service can be forwarded to the first terminal normally.

In a possible implementation manner, the first UP device acquires first user entry information based on the migration instruction, and the first user entry information is used to transmit services of the first terminal. In this way, the multicast service forwarded by the first UP device to the first terminal based on the multicast information is the service requested by the first terminal, ensuring that the multicast service requested by the first terminal is restored.

In another possible implementation, the migration instruction includes: the device identification of the second UP device, the interface identification of the first interface, or the virtual media access control layer MAC address of the first interface, and the first interface is the first interface. The interface through which a terminal goes online on the second UP device. In this way, the first UP device can obtain the first user entry information based on the device identifier of the second UP device, the interface identifier of the first interface, or the virtual MAC address of the first interface. In this case, the CP device needs to be migrated. When moving the terminal on the second UP device, there is no need to obtain the user entry information. Instead, the migration instruction is directly sent to the first UP device. Since the migration instruction does not include the user entry information, the migration instruction can be sent quickly and the number of requests to the first UP device is reduced. Usage of network resources.

In another possible implementation manner, the first UP device sends multicast information corresponding to the second terminal to the second UP device, and the second terminal is a terminal that is online on the first UP device. In this way, when the second terminal is migrated to the second UP device, it is convenient for the second UP device to send the multicast service to the second terminal based on the multicast information and restore the multicast service of the second terminal.

In another possible implementation, the first UP device and the second UP device are located in the same power supply group, or the first UP device and the second UP device are located in different power supply groups, and the power supply group includes multiple UP devices.

Among them, for the situation where the first UP device and the second UP device are in different power supply groups, when the power supply group where the second UP device is located is powered off, since the first UP device and the second UP device belong to different power supply groups, the first UP device and the second UP device belong to different power supply groups. There is no power outage in the power supply group where the UP device is located. In this way, the first terminal is migrated to the first UP device to ensure that it can go online from the first UP device.

In another possible implementation, the second UP device includes a first interface. The first interface is an interface through which the first terminal goes online. The first UP device includes a second interface. The second interface is used when the first terminal migrates to the first terminal. After an UP device, the first terminal comes online. The first interface and the second interface are two interfaces in the same warm backup group.

In another possible implementation, in the warm backup group, the second interface is the backup interface of the first interface for the first virtual MAC address, the first virtual MAC address is the address of the first interface, and the first virtual MAC address is the same as the first virtual MAC address. Corresponds to the first terminal. In this way, the first virtual MAC address is accurately bound to the second interface, making the backup relationship in the warm backup group controllable and facilitating smooth switching of the forwarding side behavior.

In another possible implementation manner, the multicast information is multicast information corresponding to the first multicast source, and the multicast group corresponding to the first multicast source is a multicast group joined by the first terminal. In this way, the multicast service forwarded by the first UP device to the first terminal based on the multicast information is the service requested by the first terminal, ensuring that the multicast service requested by the first terminal is restored.

In another possible implementation manner, the multicast information of the first multicast source includes the multicast address of the first multicast source.

In the third aspect, this application provides a method for sending multicast services. The method is applied to a virtual broadband access gateway vBNG system. The vBNG system includes a CP device, a first user plane UP device and a second UP device. In the method, the second UP device sends multicast information corresponding to the first terminal to the first UP device, and the first terminal is a terminal that is online on the second UP device. Based on the failure of the second UP device, the CP device sends a migration instruction to the first UP device, where the migration instruction is used to instruct the first terminal to migrate to the first UP device. The first UP device forwards the multicast service to the first terminal based on the multicast information and the migration instruction.

Since the second UP device sends the multicast information corresponding to the first terminal to the first UP device, when the first UP device receives the migration instruction sent by the CP device to instruct the migration of the first terminal, the first UP device based on The migration instruction and the multicast information forward the multicast service to the first terminal, that is, the UP device on which the terminal is online actively sends the multicast information corresponding to the terminal to other UP devices, so that when the UP device fails, other UP devices can automatically Restore the multicast service to ensure that the multicast service can be forwarded to the first terminal normally.

In a possible implementation manner, the second UP device sends the multicast information corresponding to the first terminal to the third UP device. In this way, when the first terminal is migrated to the third UP device, it is convenient for the third UP device to send the multicast service to the first terminal based on the multicast information and restore the multicast service of the first terminal.

In another possible implementation, the first UP device, the second UP device and the third UP device are devices in the same warm backup group.

In the fourth aspect, this application provides a device for sending multicast services. The device is applied in a virtual broadband access gateway vBNG system. The vBNG system includes the device and a second user plane UP device. The device Including: receiving unit and sending unit.

Wherein, the receiving unit is configured to receive a migration instruction, where the migration instruction is used to instruct the first terminal to migrate to the device, and the first terminal is a terminal online on the second UP device. A sending unit, configured to send a query request to the first terminal based on the migration instruction. The receiving unit is also configured to receive a query response sent by the first terminal based on the query request, where the query response includes multicast information corresponding to the first terminal. The sending unit is also configured to forward the multicast service to the first terminal based on the multicast information.

When the receiving unit receives the migration instruction for instructing to migrate the first terminal, the sending unit sends a query request to the first terminal based on the migration instruction, and the receiving unit receives a query response sent by the first terminal based on the query request, where the query response includes the first Multicast information corresponding to a terminal. That is to say, the sending unit actively queries the multicast information corresponding to the multicast group joined by the first terminal through the query request based on the migration instruction. After querying the multicast information, the sending unit forwards the multicast to the first terminal based on the multicast information. service, thereby automatically restoring the multicast service and ensuring that the multicast service can be forwarded to the first terminal normally.

In a possible implementation manner, the multicast information is multicast information corresponding to the first multicast source, and the multicast group corresponding to the first multicast source is a multicast group joined by the first terminal. Since the multicast group corresponding to the first multicast source is a multicast group joined by the first terminal, the multicast service forwarded by the sending unit to the first terminal based on the multicast information is the service requested by the first terminal, ensuring automatic recovery. The multicast service requested by the first terminal.

In another possible implementation, the device further includes: a processing unit. The processing unit is configured to obtain first user entry information based on the migration instruction, and the first user entry information is used to transmit services of the first terminal. Since the processing unit obtains the first user entry information, the sending unit ensures that the multicast service can be successfully forwarded to the first terminal based on the first user entry information.

In another possible implementation, the migration instruction includes: the device identification of the second UP device, the interface identification of the first interface, or the virtual media access control layer MAC address of the first interface, and the first interface is the first interface. The interface through which a terminal goes online on the second UP device. In this way, the processing unit can obtain the first user entry information based on the device identification of the second UP device, the interface identification of the first interface, or the virtual MAC address of the first interface. In this case, the CP device needs to migrate the first user entry information on the second UP device. When the terminal is connected, there is no need to obtain user entry information, but directly sends a migration instruction to the device. Since the migration instruction does not include user entry information, the migration instruction can be sent quickly and the occupation of network resources can be reduced.

In another possible implementation manner, the migration instruction includes first user entry information, and the first user entry information is used to transmit services of the first terminal. Since the migration instruction includes the first user entry information, it is convenient for the device to obtain the first user entry information and the algorithm implementation complexity is simplified.

In another possible implementation, the receiving unit is configured to receive a migration instruction sent by the CP device.

In another possible implementation, the device and the second UP device are located in the same power supply group, or the device and the second UP device are located in different power supply groups, and the power supply group includes multiple UP devices.

Wherein, for the situation where the device and the second UP device are located in different power supply groups, when the power supply group where the second UP device is located is powered off, since the device and the second UP device belong to different power supply groups, the device is located in a different power supply group. There is no power outage in the power supply group. In this way, the first terminal is migrated to the device to ensure that the first terminal can go online from the device.

In the fifth aspect, this application provides a device for sending multicast services. The device is applied in a virtual broadband access gateway vBNG system. The vBNG system includes the device and a second user plane UP device. The device Including: receiving unit and sending unit.

The receiving unit is configured to receive multicast information corresponding to the first terminal sent by the second UP device, and the first terminal is a terminal online on the second UP device. The receiving unit is also configured to receive a migration instruction, where the migration instruction is used to instruct the first terminal to migrate to the device. The sending unit is configured to forward the multicast service to the first terminal based on the multicast information and the migration instruction.

Since the receiving unit receives the multicast information corresponding to the first terminal sent by the second UP device, when the receiving unit receives the relocation instruction for instructing to migrate the first terminal, the sending unit sends a message to the first terminal based on the relocation instruction and the multicast information. The terminal forwards the multicast service, that is, the UP device on which the terminal is online actively sends the multicast information corresponding to the terminal to other UP devices, so that when the UP device fails, the other UP devices can automatically restore the multicast service, ensuring that the first UP device can normally forward the multicast service to the first UP device. The terminal forwards multicast services.

In a possible implementation, the device further includes: a processing unit. The processing unit is configured to obtain first user entry information based on the migration instruction, and the first user entry information is used to transmit services of the first terminal. In this way, the multicast service forwarded by the sending unit to the first terminal based on the multicast information is the service requested by the first terminal, ensuring that the multicast service requested by the first terminal is restored.

In another possible implementation manner, the sending unit is also configured to send the multicast information corresponding to the second terminal to the second UP device, and the second terminal is a terminal that is online on the device. In this way, when the second terminal is migrated to the second UP device, it is convenient for the second UP device to send the multicast service to the second terminal based on the multicast information and restore the multicast service of the second terminal.

Wherein, for the situation where the device and the second UP device are located in different power supply groups, the power supply group where the second UP device is located When the power supply group is powered off, since the device and the second UP device belong to different power supply groups, no power outage occurs in the power supply group where the device is located. In this way, the first terminal is moved to the device to ensure that the device can be accessed from the device. online.

In another possible implementation, the second UP device includes a first interface, the first interface is an interface through which the first terminal goes online, the device includes a second interface, and the second interface is used when the first terminal migrates to the After the installation, the first terminal comes online. The first interface and the second interface are two interfaces in the same warm backup group.

In another possible implementation manner, the multicast information is multicast information corresponding to the first multicast source, and the multicast group corresponding to the first multicast source is a multicast group joined by the first terminal. In this way, the multicast service forwarded by the sending unit to the first terminal based on the multicast information is the service requested by the first terminal, ensuring that the multicast service requested by the first terminal is restored.

In a sixth aspect, this application provides a device for sending multicast services, where the device includes a processor and a memory. The processor and the memory may be connected through internal connections. The memory is used to store programs, and the processor is used to execute the programs in the memory, so that the device completes the method in the first aspect or any possible implementation of the first aspect.

In a seventh aspect, this application provides a device for sending multicast services, where the device includes a processor and a memory. The processor and the memory may be connected through internal connections. The memory is used to store programs, and the processor is used to execute the programs in the memory, so that the device completes the method in the second aspect or any possible implementation of the second aspect.

In an eighth aspect, this application provides a device for sending multicast services. The device is applied in a virtual broadband access gateway vBNG system. The vBNG system includes the device and a second UP device. The device includes: Main control board and interface board. The main control board includes: a first processor and a first memory. The interface board includes: a second processor, a second memory and an interface card. The main control board and the interface board are coupled.

The first memory may be used to store the program code, and the first processor is used to call the program code in the first memory to perform the following operations: receiving a migration instruction, where the migration instruction is used to instruct the first terminal to be migrated to the device, so The first terminal is a terminal that is online on the second UP device and sends a query request to the first terminal based on the migration instruction; receives a query response sent by the first terminal based on the query request, and the query The response includes multicast information corresponding to the first terminal.

The second memory may be used to store the program code, and the second processor is used to call the program code in the second memory to trigger the interface card to perform the following operations: forward the multicast service to the first terminal based on the multicast information.

In a possible implementation, an inter-process communication protocol (IPC) channel is established between the main control board and the interface board, and the main control board and the interface board communicate through the IPC channel.

In a ninth aspect, this application provides a device for sending multicast services. The device is applied in a virtual broadband access gateway vBNG system. The vBNG system includes the device and a second UP device. The device includes: Main control board and interface board. The main control board includes: a first processor and a first memory. The interface board includes: a second processor, a second memory and an interface card. The main control board and the interface board are coupled.

The first memory may be used to store the program code, and the first processor is used to call the program code in the first memory to perform the following operations: receive the multicast information corresponding to the first terminal sent by the second UP device, and the first terminal It is a terminal that is online on the second UP device; and receives a migration instruction, where the migration instruction is used to instruct the first terminal to migrate to the device.

The second memory may be used to store the program code, and the second processor is used to call the program code in the second memory to trigger the interface card to perform the following operations: forward to the first terminal based on the multicast information and the migration instruction. Multicast service.

In a tenth aspect, the present application provides a computer program product. The computer program product includes a computer program stored in a computer-readable storage medium, and the computing program is loaded by a processor to implement the first aspect and the third aspect. Two aspects, any possible implementation method of the first aspect or any possible implementation method of the second aspect.

In an eleventh aspect, the present application provides a computer-readable storage medium for storing a computer program, which is loaded by a processor to execute any possible implementation of the first aspect, the second aspect, and the first aspect. method or any possible method of implementing the second aspect.

In a twelfth aspect, the present application provides a chip, including a memory and a processor. The memory is used to store computer instructions, and the processor is used to call and run the computer instructions from the memory to execute the above-mentioned first aspect, second aspect, Any possible implementation of the first aspect or any possible implementation of the second aspect.

In a thirteenth aspect, this application provides a virtual broadband access gateway vBNG system. The vBNG system includes a CP device, a first user plane UP device and a second UP device. In the system, the second The UP device sends the multicast information corresponding to the first terminal to the first UP device. The first terminal is a terminal that is online on the second UP device. Based on the failure of the second UP device, the CP device sends a migration instruction to the first UP device, where the migration instruction is used to instruct the first terminal to migrate to the first UP device. The first UP device forwards the multicast service to the first terminal based on the multicast information and the migration instruction.

Since the second UP device sends the multicast information corresponding to the first terminal to the first UP device, when the first UP device receives the migration instruction sent by the CP device to instruct the migration of the first terminal, the first UP device based on The migration instruction and the multicast information forward the multicast service to the first terminal, thereby automatically restoring the multicast service and ensuring that the multicast service can be forwarded to the first terminal normally.

Description of the drawings

Figure 1 is a schematic structural diagram of a vBNG system provided by an embodiment of the present application;

Figure 2 is a schematic structural diagram of another vBNG system provided by an embodiment of the present application;

Figure 3 is a flow chart of a terminal online method provided by an embodiment of the present application;

Figure 4 is a flow chart of a method for sending multicast services provided by an embodiment of the present application;

Figure 5 is a schematic diagram of a migration terminal provided by an embodiment of the present application;

Figure 6 is a flow chart of another method for sending multicast services provided by an embodiment of the present application;

Figure 7 is a schematic structural diagram of a device for sending multicast services provided by an embodiment of the present application;

Figure 8 is a schematic structural diagram of another device for sending multicast services provided by an embodiment of the present application;

Figure 9 is a schematic structural diagram of a system for sending multicast services provided by an embodiment of the present application;

Figure 10 is a schematic structural diagram of another device for sending multicast services provided by an embodiment of the present application;

Figure 11 is a schematic structural diagram of another device for sending multicast services provided by an embodiment of the present application;

Figure 12 is a schematic structural diagram of a device for sending multicast services provided by an embodiment of the present application;

Figure 13 is a schematic structural diagram of another device for sending multicast services provided by an embodiment of the present application.

Detailed ways

The embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

Broadband remote access server (BRAS) is an access gateway for broadband network applications, also known as broadband network gateway (BNG). Virtual BNG (virtual BNG, vBNG) is an implementation form of BRAS. It is deployed by separating CP equipment and UP equipment (CU separation). Therefore, it can also be called BRAS with CU separation deployment. Among them, multiple UP devices are deployed in a distributed manner, and each UP device serves as the user plane of the BNG (or vBNG), which is used to forward service packets based on the user table entry information issued by the CP device, and to implement quality of service based on service, QoS) and access control lists (access control lists, ACL) and other technologies. CP devices can be implemented using cloud technology and deployed centrally. As the control plane of BNG (or vBNG), it is used to control and manage terminals (also called users) and to manage multiple UP devices in a unified manner. For example, the CP device is mainly responsible for terminal online, delivery of configuration and user table information, etc. Among them, the UP device can also be called a forwarding plane device, so CU separation can also be called forwarding and control separation, that is, forwarding and control separation. A system deployed using this CU separation method is also called a CU-separated broadband gateway access system, or a transfer-control-separated broadband gateway access system.

Referring to Figure 1, a schematic structural diagram of a vBNG system 100 provided by an embodiment of the present application is shown. As shown in Figure 1, the vBNG system 100 may include: at least one CP device 101 and multiple UP devices 102 (the first UP device 1021 and the second UP device 1022 in Figure 1).

Among them, at least one refers to one or more, and multiple refers to two or more. Figure 1 takes a CP device 101 as an example for illustration. The CP device 101 is generally deployed in the operator's data center (DC) computer room, also known as the core computer room. Each UP device 102 can be deployed in different convergence computer rooms, also called edge computer rooms. Each UP device 102 has established a communication connection with the CP device 101, and each UP device 102 can establish a communication connection with at least one terminal 104 through the first forwarding device 103 (for example, a forwarding device in a layer 2 broadcast domain), and Perform data interaction.

For each UP device 102 , the UP device 102 establishes a communication connection with the second forwarding device 105 and performs data exchange with the second forwarding device 105 . For example, for the multicast source 106 corresponding to the multicast group that the terminal 104 joins, the second forwarding device 105 can forward the multicast service multicast by the multicast source 106 to the UP device 102, and the UP device 102 receives the multicast service and forwards it to the terminal. 104 forwards the multicast service.

In some embodiments, the terminal 104 is also called user equipment, which may be a residential gateway (residential gateway, RGW), mobile phones, laptops or desktop computers and other devices. The first forwarding device 103 connected to the terminal 104 may also be called an access node (AN), which may be a switch (SW), an optical line terminal (optical line terminal, OLT) or a digital subscriber line access Multiplexer (digital subscriber line access multiplexer, DSLAM), etc.

In some embodiments, the first forwarding device 103 can not only implement packet forwarding in the Layer 2 broadcast domain, but can also isolate the terminal 104 on a virtual extensible local area network (VXLAN) or QinQ. The QinQ (802.1Q-in-802.1Q) is a technology that expands the virtual local area network (VLAN) space, also known as stacked VLAN technology.

In some embodiments, for the second forwarding device 105 communicating with the UP device 102, the second forwarding device 105 is closer to the multicast source 106 than the UP device 102. Optionally, the second forwarding device 105 is a core router (CR) or a leaf node (leaf), etc.

Continuing to refer to FIG. 1 , the vBNG system 100 may also include an authentication server 107 . The authentication server 107 can be a RADIUS server. The authentication server 107 supports the authentication, authorization and accounting (AAA) protocol. As shown in Figure 1, the authentication server 107 has established a communication connection with the CP device 101. After the CP device 101 completes the interaction of the dial-up protocol message (also called an access protocol message) with the terminal 104 through the target UP device among the multiple UP devices 102, it sends the authentication for the terminal 104 to the authentication server 107. ask.

The authentication server 107 authenticates the terminal 104, and after the terminal 104 passes the authentication, allocates an address to the terminal 104, and sends an authentication response carrying the address to the CP device 101. After receiving the authentication response, the CP device 101 can deliver the user entry information of the terminal 101 to the target UP device. The target UP device can locally generate a forwarding entry for the terminal 104 based on the user entry information, perform relevant business policy execution and traffic forwarding, and publish the route for the terminal 104 to the outside. The terminal 104 can then access the network through the target UP device. That is to say, the terminal 104 can access the network through the target UP device, or it can be understood that the terminal 104 can go online from the target UP device.

In this embodiment of the present application, the CP device 101 may include multiple virtual machines (VMs) deployed on a physical server. Each UP device 102 may be an entity physical UP (physic UP, pUP) device, or may be a virtual UP (virtual UP, vUP) device. For example, the UP device 102 may be a VM deployed on a physical server. The CP device 101 is capable of managing multiple pUP devices and/or multiple vUP devices.

The CP device 101 and each UP device 102 can be connected through a service interface, a management interface and a control interface. The service interface is also called a control packet redirect interface (CPRi), which is generally a VXLAN interface. For example, it can be a VXLAN generic protocol extension (VXLAN-GPE) interface. After receiving the packets (such as access protocol packets and service packets) sent by the terminal 104, the UP device 102 can send them to the CP device 101 for processing through the service interface.

The management interface (Mi) is generally a network configuration protocol (NETCONF) interface. The CP device 101 can deliver configurations to each UP device 102 through the management interface. Each UP device 102 can deliver configurations to each UP device 102 through the management interface. The CP device 101 reports the running status.

The control interface is also called a state control interface (state control interface, SCi), which is generally a control plane and user plane separated protocol (CUSP) interface. After the CP device 101 processes the access protocol message sent by the terminal 104 and completes the online access of the terminal 104, it can deliver the user entry information corresponding to the terminal 104 to the corresponding UP device 102 through the control interface. The user entry information corresponding to the terminal 104 is also called a session entry, which generally includes the user information, virtual MAC address, routing information and quality of service (Quality of Service) corresponding to the terminal 104. Service, QoS) and other information. The user information includes information such as the address and/or user account of the terminal 104. The virtual MAC address is the address of a certain interface on the UP device 102, and the terminal 104 goes online from this interface.

In a CU-separated broadband gateway access system, each UP device 102 managed by the CP device 101 can form a UP pool. Furthermore, in order to improve the reliability of the broadband remote access system, for any UP device 102, an N+1 warm backup group can be configured for each interface on the UP device 102. Among them, N is an integer greater than or equal to 1. The N+1 warm backup group indicates that the interface corresponds to N backup interfaces, and indicates that the interface corresponds to N backup UP devices. The N backup interfaces are the same as the N backup UP devices. Correspondingly, the N backup interfaces are respectively located on the N backup UP devices. Wherein, N is an integer greater than or equal to 1. The warm backup group indicates that the CP device 101 can migrate the terminal online from the interface to the backup interface on at least one backup UP device. The N backup UP devices include the at least A backup UP device.

When the UP device 102 fails, for the convenience of explanation, any interface on the UP device 102 is called the first interface. Or, when an interface of the UP device 102 fails, for the convenience of explanation, the faulty interface is called the first interface. First interface. The CP device 101 can migrate multiple terminals 104 online from the first interface to at least one backup UP device corresponding to the first interface through a load sharing policy, so that the at least one backup UP device uses their respective backup interfaces to forward the multiple terminals 104 . Terminal business.

For example, referring to Figure 2, the UP device 102 in the vBNG system 100 includes UP device 1, UP device 2, UP device 3, UP device 4, etc. Assume that interface 21 on UP device 2 has a corresponding 3+1 warm backup group. The 3+1 warm backup group represents the three backup interfaces corresponding to interface 21. The three backup interfaces are respectively interface 11 on UP device 1. , interface 31 on UP device 3 and interface 41 on UP device 4. It is also assumed that interface 22 in UP device 2 also has a corresponding 2+1 warm backup group. This 2+1 warm backup group is used to indicate the two backup interfaces corresponding to interface 22. The two backup interfaces are respectively on UP device 1. interface 12 and interface 32 on UP device 3.

Assume that UP device 2 fails. For interface 21 on UP device 2, CP device 101 will migrate multiple terminals 104 online from interface 21 to UP device 1, UP device 3 and/or UP device through the load sharing policy. 4 on. In this way, for at least one terminal that migrates to the UP device 1, the UP device 1 forwards the service of the at least one terminal through the interface 11; for at least one terminal that migrates to the UP device 3, the UP device 3 forwards the at least one terminal through the interface 31 The terminal's services; and/or, for at least one terminal that is migrated to the UP device 4, the UP device 4 forwards the at least one terminal's services through the interface 41.

For the interface 22 on the UP device 2, the CP device 101 migrates multiple terminals 104 online from the interface 22 to the UP device 1 and/or the UP device 3 through the load sharing policy. In this way, for at least one terminal that migrates to the UP device 1, the UP device 1 forwards the service of the at least one terminal through the interface 12; for at least one terminal that migrates to the UP device 3, the UP device 3 receives the service of the CP device 101 through the interface 32 Forward the service of the at least one terminal.

In some embodiments, the CP device stores a first correspondence relationship. The first correspondence relationship is used to store the correspondence relationship between primary device information and backup device information. The primary device information includes a device identification of a UP device and the device ID of the UP device. The interface identifier of the interface. The backup device information includes the device identifiers of the N backup UP devices corresponding to the interface and the interface identifiers of the backup interfaces corresponding to the interface on the N backup UP devices.

For example, see the first correspondence shown in Table 1 below. The first record of the first correspondence (the record with serial number 1) includes primary device information and backup device information. The primary device information includes the device identifier Device2 of UP device 2 and the interface identifier Interface21 of interface 21. The backup device information includes the device identifier Device1 of the backup UP device (UP device 1) corresponding to interface 21 and the backup interface (Interface 11). The interface identifier Interface11, the device identifier Device3 of the backup UP device (UP device 3) corresponding to interface 21, and the interface identifier Interface31 of the backup interface (interface 31), and the interface 21 corresponds to the device identifier Device4 of the backup UP device (UP device 4) and the interface identifier Interface41 of the backup interface (interface 41).

The second record of the first correspondence relationship (the record with serial number 2) includes primary device information and backup device information. The primary device information includes the device identifier Device2 of UP device 2 and the interface identifier Interface22 of interface 22. The backup device information includes the device identifier Device1 of the backup UP device (UP device 1) corresponding to interface 22 and the backup interface (Interface 12). The interface identifier Interface12, the device identifier Device3 of the backup UP device (UP device 3) corresponding to the interface 22, and the interface identifier 32 of the backup interface (interface 32).

Table 1

In some embodiments, the UP device saves a second correspondence relationship. The second correspondence relationship is used to save interface identifiers and backup device information. For any record in the second correspondence relationship, the record includes the interface of an interface on the UP device. Identity and backup device information. The backup device information includes the device identifiers of the N backup UP devices corresponding to the interface and the interface identifiers of the backup interfaces corresponding to the interface on the N backup UP devices.

For example, see Table 2 below, UP device 2 saves a second corresponding relationship. The first record of the second corresponding relationship (record with serial number 1) includes the interface identifier Interface21 of the interface 21 of UP device 2 and the backup device information. The backup device information includes the device identification Device1 of the backup UP device (UP device 1) corresponding to interface 21 and the interface identification Interface11 of the backup interface (interface 11). The device identification Device3 of the backup UP device (UP device 3) corresponding to interface 21 and the interface identifier Interface31 of the backup interface (interface 31), the device identifier Device4 of the backup UP device (UP device 4) corresponding to interface 21, and the interface identifier Interface41 of the backup interface (interface 41).

The second record of the second correspondence relationship (the record with serial number 2) includes the interface identifier Interface22 of the interface 22 of the UP device 2 and the backup device information. The backup device information includes the device identification Device1 of the backup UP device (UP device 1) corresponding to interface 22, the interface identification Interface12 of the backup interface (interface 12), and the device identification of the backup UP device (UP device 3) corresponding to interface 22. The interface identifier 32 of Device3 and the backup interface (interface 32).

Table 2

In some embodiments, for each UP device 102 in the vBNG system 100, one or more virtual MAC addresses may be configured for an interface on the UP device 102 (ie, the interface used for the terminal 104 to go online). Divide the terminals online from this interface into multiple user groups, and each user group corresponds to a virtual MAC address. For any user group and the virtual MAC address corresponding to the user group, the terminals included in the user group use the virtual MAC address to interact with the UP device 102 for services. When the CP device 101 migrates the terminal 104 online from the interface to other UP devices, the migration can be performed with the virtual MAC address of the interface as the granularity. That is, for any virtual MAC address of the interface, the CP device 101 can migrate the user group corresponding to the virtual MAC address from the interface to a backup UP device corresponding to the interface.

For example, still taking Figure 2 as an example, for the 3+1 warm backup group corresponding to interface 21 on UP device 2, virtual MAC address 1, virtual MAC address 2 and virtual MAC address 3 are configured for interface 21 on UP device 2. That is to say, the terminals that come online from interface 21 are divided into user group 1 corresponding to virtual MAC address 1, user group 2 corresponding to virtual MAC address 2, and user group 3 corresponding to virtual MAC address 3. Assuming that UP device 2 fails, CP device 101 migrates at least one terminal included in user group 1 corresponding to virtual MAC address 1 to UP device 1, and migrates at least one terminal included in user group 2 corresponding to virtual MAC address 2 to the UP device. 3, migrate at least one terminal included in the user group 3 corresponding to the virtual MAC address 3 to the UP device 4. In this way, UP device 1 forwards the service of at least one terminal included in user group 1 through interface 11; UP device 3 forwards the service of at least one terminal included in user group 2 through interface 31; and/or UP device 4 forwards the user service through interface 41. Group 3 includes the services of at least one terminal.

For the 2+1 warm backup group corresponding to interface 22 on UP device 2, configure virtual MAC address 4 and virtual MAC address 5 for interface 22 on UP device 2. That is to say, the terminals that come online from interface 22 are divided into user group 4 corresponding to virtual MAC address 4 and user group 5 corresponding to virtual MAC address 5. Assuming that UP device 2 fails, CP device 101 migrates at least one terminal included in user group 4 corresponding to virtual MAC address 4 to UP device 1, and migrates at least one terminal included in user group 5 corresponding to virtual MAC address 5 to the UP device. 3 on. In this way, the UP device 1 forwards the service of at least one terminal included in the user group 4 through the interface 12; the UP device 3 forwards the service of at least one terminal included in the user group 5 through the interface 32.

For any terminal 102 in the vBNG system 100 shown in Figure 1, for the convenience of explanation, the terminal is called the first terminal. The first terminal needs to go online on a certain UP device in the vBNG system 100, and then the UP device Only then can the service of the first terminal be transmitted. Referring to Figure 3, an embodiment of the present application provides a method 300 for a terminal to go online. The method 300 includes the following steps.

Step 301: The first terminal sends an access protocol message to the CP device. The access protocol message is used to request the first terminal to access the network.

In some embodiments, the first terminal sends the access protocol message to a UP device in the vBNG system, and the UP device sends the access protocol message to the CP device. The UP device may be a UP device near the first terminal, or may be a default UP device set on the first terminal in advance.

Optionally, the access protocol message includes information such as the user account and user password of the first terminal.

Step 302: The CP device receives the access protocol message, authenticates the first terminal through the authentication server, and obtains the user entry information of the first terminal when the first terminal passes the authentication.

The user entry information of the first terminal is used to transmit services of the first terminal.

In some embodiments, the first terminal is authenticated and the user entry information of the first terminal is obtained through the following operations 3021-3025, which are respectively.

3021: The CP device sends an authentication request for the first terminal to the authentication server.

In some embodiments, the authentication request includes information such as the user account and user password corresponding to the first terminal.

3022: The authentication server receives the authentication request, authenticates the first terminal, and after passing the authentication of the first terminal, allocates an address to the first terminal, and sends an authentication response carrying the address to the CP device.

In some embodiments, the authentication server authenticates the first terminal based on the user account and user password corresponding to the first terminal included in the authentication request. Optionally, the address allocated to the first terminal includes an Internet protocol (Internet protocol, IP) address and/or a media access control layer (media access control, MAC) address, etc.

3023: The CP device receives the authentication response and selects the UP device for the first terminal to go online from the UP devices included in the vBNG system. For convenience of explanation, the selected UP device is called the second UP device.

In some embodiments, the CP device may directly select the UP device that sends the access protocol message, or select the UP device with the least load, or select the UP device closest to the first terminal, etc.

3024: The CP device selects an interface from the interfaces included in the second UP device. For convenience of explanation, the selected interface is called the first interface, and a user group is selected from at least one user group of the first interface.

In some embodiments, the CP device stores the interface identifier of any interface in the second UP device, at least one virtual MAC address of the interface, and the terminals included in the user group corresponding to each virtual MAC. In 3024, the CP device selects an interface from the interfaces on the second UP device as the first interface based on the load balancing policy, and selects a user group from the user group corresponding to each virtual MAC address of the first interface.

3025: The CP device generates user entry information of the first terminal. The user entry information includes user information corresponding to the first terminal, the first virtual MAC address, the first downlink routing information, etc.

The first virtual MAC address is the virtual MAC address corresponding to the selected user group. The user information corresponding to the first terminal includes the address of the first terminal, and may also include information such as the user account of the first terminal. The first downlink routing information includes a destination address and first next hop information. The destination address is the address of the first terminal. The next hop device indicated by the first next hop information is the first forwarding device communicating with the first terminal. .

In some embodiments, for the first interface on the second UP device, the first interface corresponds to N backup interfaces, and the N backup interfaces are located on the N backup UP devices. For at least one virtual MAC address on the first interface , each virtual MAC address corresponds to a backup interface.

In some embodiments, the CP device stores a third correspondence relationship. The third correspondence relationship is used to store the correspondence relationship between the primary device information and the backup device information. Compared with the first correspondence relationship, the primary device information includes a second UP. The device ID of the device, the interface ID of the first interface and a virtual MAC address of the first interface. The backup device information includes the device ID of a backup UP device corresponding to the first interface and the virtual MAC address and the device ID of the backup UP device. The interface label of the backup interface knowledge. Optionally, the CP device saves any one of the above-mentioned first correspondence relationship and the third correspondence relationship.

For example, see Figure 2. For interface 21 on UP device 2, interface 21 has corresponding virtual MAC address 1, virtual MAC address 2 and virtual MAC address 3. The three backup interfaces corresponding to interface 21 include the interfaces on UP device 1. 11. Interface 31 on UP device 3 and interface 41 on UP device 4. Virtual MAC address 1 corresponds to interface 11 on UP device 1, virtual MAC address 2 corresponds to interface 31 on UP device, and virtual MAC address 3 corresponds to interface 41 on UP device 4. Referring to Table 3 below, the CP device stores the following third correspondence. The first record of the third correspondence (the record with serial number 1) includes primary device information and backup device information. The primary device information includes the device of UP device 1. Identifies Device2, the interface identifier Interface21 of interface 21, and the virtual MAC address 1. The device information includes the device identifier Device1 of UP device 1 and the interface identifier Interface11 of interface 11. The second record of the third correspondence relationship (the record with serial number 2) includes primary device information and backup device information. The primary device information includes the device identifier Device2 of UP device 2, the interface identifier Interface21 of interface 21, and the virtual MAC address 2. The device information includes the device identifier Device3 of UP device 3 and the interface identifier Interface31 of interface 31. Other records in the third correspondence relationship shown in Table 3 will not be listed one by one here.

table 3

In some embodiments, the UP device stores a fourth correspondence. The fourth correspondence is used to store the correspondence between interface identifiers, virtual MAC addresses, and backup device information. For each record saved in the fourth correspondence, The record includes the interface identifier, virtual MAC address, and backup device information. The interface identifier is the interface identifier of an interface on the UP device, and the virtual MAC address is a virtual MAC address of the interface. Optionally, the UP device saves any one of the above-mentioned second correspondence relationship and the fourth correspondence relationship.

For example, referring to Figure 2, for UP device 2, UP device 2 saves the fourth correspondence relationship as shown in Table 4 below. The first record of the fourth correspondence relationship (the record with serial number 1) includes the interface identifier of interface 21 Interface21, virtual MAC address 1, and backup device information. The backup device information includes the device identifier Device1 of UP device 1 and the interface identifier Interface11 of interface 11. The second record of the fourth correspondence relationship (the record with serial number 2) includes the interface identifier interface21 of interface 21, virtual MAC address 2 and backup device information. The backup device information includes the device identifier Device3 of UP device 3 and the interface of interface 31. Identifies Interface31. The other records in the fourth correspondence relationship shown in Table 4 are not listed one by one here.

Table 4

In some embodiments, for any virtual MAC address of the first interface, the backup UP device corresponding to the virtual MAC address and the second UP device are in the same power supply group, or the backup UP device corresponding to the virtual MAC address and the second UP device are in the same power supply group. UP devices are located in different power supply groups. Optionally, UP devices located in the same computer room can be called a power supply group, or UP devices located in the same rack can be called a power supply group, or UP devices with the same power supply can be called a power supply group.

When the backup UP device corresponding to the virtual MAC address and the second UP device are in different power supply groups, in this way, when the power supply group where the second UP device is located suffers a power outage or other fault, the virtual MAC address on the second UP device can be Terminals in the corresponding user group are migrated to the backup UP device corresponding to the virtual MAC address. Since the backup UP device and the second UP device belong to different power supply groups, the power supply group where the backup UP device is located may not experience power outages or other faults, so that each terminal in the user group can successfully go online on the backup UP device.

In some embodiments, the CP device generates the user entry information of the first terminal and sends the user entry information corresponding to the first terminal to the backup UP device corresponding to the first virtual MAC address. When implemented:

The CP device combines the device identification of the second UP device, the interface identification of the first interface and the first virtual MAC address into the primary device information, and obtains the corresponding backup device information from the third corresponding relationship based on the primary device information. The obtained backup device The information includes the device ID of a backup UP device and the interface ID of the backup interface on the backup UP device. Based on the device identification of the backup UP device, the CP device sends the first information and the user entry information of the first terminal to the backup UP device. The first information includes the device identification of the second UP device, the interface identification of the first interface and the One or more of a virtual MAC address. The backup UP device receives the interface identifier of the backup interface, the first information and the user entry information of the first terminal, composes the first information and the user entry information of the first terminal into a record and saves the record in the fifth corresponding in relationship.

For example, assuming that the first virtual MAC address is virtual MAC address 1, the CP device uses the device identifier of the second UP device, Device2, the interface identifier of the first interface, Interface21, and virtual MAC address 1 to form the master device information. Based on the master device information, the master device information is as follows: The corresponding backup device information is obtained in the third correspondence relationship shown in Table 3. The obtained backup device information includes the device identification Device1 of the backup UP device and the interface identification Interface11 of the backup interface. Based on the device identifier Device1 of the backup UP device, the CP device sends the first information and the user entry information of the first terminal to the first UP device. The first information includes the device identifier Device2 of the second UP device and the interface identifier of the first interface. One or more of Interface21 and Virtual MAC Address 1. The first UP device receives the first information and the user entry information of the first terminal, combines the first information and the user entry information of the first terminal into a record, and saves the record in the fifth correspondence shown in Table 5. middle.

table 5

Step 303: The CP device sends the user entry information of the first terminal to the second UP device.

In some embodiments, the CP device stores the correspondence between the device identification of the second UP device, the interface identification of the first interface, the first virtual MAC address and the user entry information of the first terminal in the sixth correspondence. .

For example, referring to the sixth correspondence shown in Table 6 below, the CP device combines the device identifier Device2 of the second UP device, the interface identifier Interface21 of the first interface, the first virtual MAC address (virtual MAC address 1) and the first terminal's The correspondence between user entry information is stored in the sixth correspondence shown in Table 6 below.

Table 6

Step 304: The second UP device receives the user entry information of the first terminal and sends an access response message to the first terminal. The access response message includes the user information of the first terminal and the first virtual MAC address. The information includes the address of the first terminal.

Wherein, after receiving the user entry information of the first terminal, the second UP device associates the user entry information with the first interface corresponding to the first virtual MAC address based on the first virtual MAC address in the user entry information.

In some embodiments, when each virtual MAC address of the first interface corresponds to a backup interface on the backup UP device, the CP device may not send the user entry information of the first terminal to the backup UP device. After receiving the user entry information of the first terminal, the second UP device sends the user entry information of the first terminal to the backup UP device. When implemented:

Based on the device identification of the backup UP device, the second UP device sends the interface identification of the backup interface, the first information and the user entry information of the first terminal to the backup UP device. The first information includes the device identification of the second UP device. , one or more of the interface identifier of the first interface and the first virtual MAC address. The backup UP device receives the interface identifier of the backup interface, the first information and the user entry information of the first terminal, combines the interface identification of the backup interface, the first information and the user entry information of the first terminal into a record and records This record is saved in the fifth correspondence.

Step 305: The first terminal receives the address of the first terminal and the first virtual MAC address, and sends a first service request to the second UP device. The first service request includes the user information of the first terminal, the first virtual MAC address and the request to be requested. Business information for the business.

After the first terminal receives the address of the first terminal and the first virtual MAC address, the first terminal can request a service. The service information of the service to be requested by the first terminal includes an address corresponding to the service to be requested. The user information of the first terminal includes the address of the first terminal, and may also include the user account of the first terminal and other contents.

If the service to be requested by the first terminal is a multicast service, the address of the service to be requested is the multicast address of the first multicast source, and the first multicast source is the multicast source corresponding to the multicast service. The first service request It is a multicast join request, and the service information of the service to be requested is multicast information, and the multicast information includes the multicast address. If the service to be requested by the first terminal is a non-multicast service, the address of the service to be requested is the address of the server where the service to be requested is located.

Optionally, the first terminal sends the first service request to the first forwarding device, the first forwarding device receives the first service request, and sends the first service to the second UP device based on the first virtual MAC address included in the first service request. ask.

Step 306: The second UP device receives the first service request and sends a second service request to the second forwarding device. The second service request includes the user information of the first terminal and the service information of the service to be requested.

In step 306, the second UP device receives the first service request through the first interface. The service to be requested in the first service request may be a multicast service or a non-multicast service.

If the service to be requested is a non-multicast service, the second UP device generates the first uplink routing information corresponding to the first terminal. The first uplink routing information includes the destination address and the second next hop information. The destination address is the address of the service to be requested. (the address of the server), the next hop device indicated by the second next hop information is the second forwarding device, and the first uplink routing information is added to the user table entry information of the first terminal.

The second UP device also sends an update request to the CP device. The update request includes the user information of the first terminal and the first uplink routing information. The CP device receives the update request and obtains user entry information including the user information. The user table The entry information is the user entry information of the first terminal, and the first uplink routing information is added to the user entry information of the first terminal.

In some embodiments, the second UP device also sends an update request to the backup UP device corresponding to the first virtual MAC address, where the update request includes the user information of the first terminal and the first uplink routing information. The backup UP device receives the update request, obtains user entry information including the user information, the user entry information is the user entry information of the first terminal, and adds the first uplink routing information to the user entry information of the first terminal. . Alternatively, after receiving the update request, the CP device sends an update request to the backup UP device corresponding to the first virtual MAC address. The backup UP device receives the update request, obtains user entry information including the user information, the user entry information is the user entry information of the first terminal, and adds the first uplink routing information to the user entry information of the first terminal. .

If the service to be requested is a multicast service, the second UP device combines the multicast information of the service to be requested and the user information of the first terminal into a record and saves the record in the seventh correspondence relationship.

In some embodiments, the second UP device sends the multicast information of the service to be requested and the user information of the first terminal to the first UP device. The first UP device is a backup UP device corresponding to the first interface. The first UP device The device receives the multicast information and the user information of the first terminal, composes the multicast information and the user information of the first terminal into a record, and stores the record in the seventh correspondence relationship. Optionally, the first UP device is a backup UP device corresponding to the first interface and the first virtual MAC address. When implemented:

Based on the interface identifier of the first interface, the second UP device obtains the device identifiers of the N backup UP devices corresponding to the first interface from the second correspondence relationship, and based on the device identifier of each backup UP device, sends a message to each backup UP device. Each backup UP device then combines the multicast information and the user information of the first terminal into a record and stores the record in the seventh correspondence relationship.

For example, referring to Figure 2, the UP device 2 receives the first service request through the interface 21, composes the multicast information in the first service request and the user information of the first terminal into a record, and saves the record in the seventh correspondence relationship. Based on the interface identifier interface21 of interface 21, three backup UPs corresponding to interface 21 are obtained from the second correspondence relationship shown in Table 2, which are UP device 1, UP device 3 and UP device 4 respectively. Send to UP device 1, UP device 3 and UP device 4 respectively The UP device 1, UP device 3 or UP device 4 combines the multicast information and the user information of the first terminal into a record and saves the record in the seventh correspondence relationship. or,

Based on the first interface and the first virtual MAC address, the second UP device obtains the device identification of a backup UP device corresponding to the first interface and the first virtual MAC address from the fourth correspondence relationship, and based on the device identification of the backup UP device , sending the multicast information and the user information of the first terminal to the backup UP device, and the backup UP device then combines the multicast information and the user information of the first terminal into a record and saves the record in the seventh correspondence relationship.

For example, referring to Figure 2, the UP device 2 receives a first service request through the interface 21. It is assumed that the first service request includes the user information of the first terminal, the virtual MAC address 1 and the multicast information. The multicast information in the first service request and the user information of the first terminal are combined into one record, and the record is saved in the seventh correspondence relationship. Based on the interface identifier interface21 and virtual MAC address 1 of interface 21, the backup UP device 1 corresponding to interface 21 and virtual MAC address 1 is obtained from the fourth correspondence relationship shown in Table 4. The multicast information and the user information of the first terminal are sent to the UP device 1. The UP device 1 combines the multicast information and the user information of the first terminal into a record and saves the record in the seventh correspondence relationship.

Step 307: The second forwarding device receives the second service request, generates routing information corresponding to the first terminal, and requests the service to be requested based on the address of the service to be requested included in the second service request.

In step 307, when the service to be requested is a multicast service, the address of the service to be requested is a multicast address, and the second forwarding device adds the first terminal to the multicast group based on the multicast address and the address of the first terminal. The multicast group is the multicast group of the first multicast source corresponding to the multicast address. Routing information corresponding to the first terminal is generated. The routing information includes second downlink routing information. The second downlink routing information includes the multicast address. and the third next hop information. The next hop device indicated by the third next hop information is the second UP device.

Referring to Figure 2, the second forwarding device can then send the multicast service of the multicast source to the first terminal. The implementation process is as follows:

The second forwarding device receives the first service message multicast by the multicast source based on the multicast address. The first service message is a message belonging to the multicast service. The first service message includes multicast information. The group The broadcast information includes the multicast address, obtains the second downlink routing information including the multicast address, obtains the third next hop information from the second downlink routing information, and sends a request to the second UP device (such as UP device 2) sends the first service message.

The second UP device (such as UP device 2) receives the first service message, and based on the multicast information included in the first service message, obtains the user information of the first terminal from the seventh correspondence relationship, and obtains the user entry information from the saved user entry information. Obtain user entry information including the user information, and the user entry information is the user entry information of the first terminal. A second service message is sent to the first terminal based on the user entry information, and the second service message is obtained based on the first service message.

Optionally, the user entry information includes first downlink routing information and a first virtual MAC address (such as virtual MAC address 1), and the next hop device indicated by the first next hop information in the first downlink routing information. As the first forwarding device, the second UP device (eg, UP device 2) sends the second service packet to the first forwarding device through the first interface (eg, interface 21) corresponding to the first virtual MAC address. The first forwarding device receives the second service message and sends the second service message to the first terminal.

In step 307, when the service to be requested is a non-multicast service, the address of the service to be requested is the address of the server where the service to be requested is located, and the second forwarding device generates routing information corresponding to the first terminal and sends the second service to the server. request, the routing information includes second downlink routing information and second uplink routing information. The second downlink routing information includes a destination address and third next hop information, where the destination address is the address of the first terminal, and the next hop device indicated by the third next hop information is the second UP device. The second uplink routing information includes a destination address and fourth next-hop information. The destination address is the address of the server. The next-hop device indicated by the fourth next-hop information is the server. Alternatively, the next-hop device includes a capable arrive Routing information to reach the server.

Referring to Figure 2, the second forwarding device can then transmit the requested service to the first terminal. The implementation process is as follows:

For the downlink transmission direction, the second forwarding device receives the third service message sent by the server. The third service message is a message belonging to the service to be requested, and the destination address of the third service message is the address of the first terminal. The second forwarding device obtains the second downlink routing information including the address of the first terminal, obtains the third next hop information from the second downlink routing information, and forwards the information to the second UP device (such as the UP device) indicated by the third next hop information. 2) Send the third service message. The second UP device receives the third service message, and based on the address of the first terminal, obtains user entry information including the address of the first terminal from the saved user entry information. The user entry information is the user of the first terminal. Table item information. A fourth service message is sent to the first terminal based on the user entry information, and the fourth service message is obtained based on the third service message.

Optionally, the user entry information includes a first virtual MAC address (such as virtual MAC address 1) and first downlink routing information, and the next hop device indicated by the first next hop information in the first downlink routing information. As the first forwarding device, the second UP device (eg, UP device 2) sends the fourth service packet to the first forwarding device through the first interface (eg, interface 21) corresponding to the first virtual MAC address. The first forwarding device receives the fourth service message and sends the fourth service message to the first terminal.

For the uplink transmission direction, the first terminal sends the fifth service message to the first interface of the second UP device (such as the interface 21 of UP device 2) based on the first virtual MAC address (such as virtual MAC address 1). The message includes the address of the first terminal and the address of the server. The address of the server is the destination address of the fifth service message. The second UP device receives the fifth service message through the first interface (such as interface 21), and obtains user entry information including the address of the first terminal. The user entry information includes first uplink routing information, and first uplink routing information. The next hop device indicated by the second next hop information in is the second forwarding device. The second UP device sends a sixth service message to the second forwarding device. The sixth service message is obtained based on the fifth service message. The destination address of the sixth service message is the address of the server. The second forwarding device receives the sixth service message, obtains the second uplink routing information whose destination address is the address of the server, and sends the sixth service message to the server based on the second uplink routing information.

Optionally, the first terminal sends a fifth service packet to the first forwarding device, and the fifth service packet further includes the first virtual MAC address (such as virtual MAC address 1). The first forwarding device receives the fifth service message and sends the fifth service message to the first interface of the second UP device (eg, interface 21 of UP device 2) based on the first virtual MAC address included in the fifth service message.

Referring to Figure 4, this embodiment of the present application provides a method 400 for sending multicast services. The method 400 is applied to the vBNG system 100 shown in Figure 1. The vBNG system 100 includes a CP device, a first UP device and a second UP device, the method 400 includes the following steps.

Step 401: The first UP device receives a migration instruction, which is used to instruct the first terminal to migrate to the first UP device. The first terminal is a terminal that is online on the second UP device.

Wherein, the first terminal is a terminal that goes online on the first interface on the second UP device. In step 401, the first UP device receives the migration instruction sent by the CP device.

In some embodiments, when the CP device senses that the second UP device is faulty, it needs to migrate the online terminals from each interface on the second UP device to other UP devices. The first interface is any terminal on the second UP device. an interface.

In some embodiments, when the first interface of the second UP device fails, the second UP device sends fault notification information to the CP device. The fault notification information includes the interface identifier of the first interface, and the CP device receives the fault notification information, At this time, the CP device needs to migrate the terminals online on the first interface on the second UP device to other UP devices.

In step 401, the CP device determines the first UP device in the following two ways, and sends a migration message to the first UP device. Shift instructions, the two methods are respectively.

In the first method, when the CP device needs to migrate a terminal that comes online from the first interface, the CP device determines N backup UP devices corresponding to the first interface, and each backup UP device includes a backup interface corresponding to the first interface. Based on at least one virtual MAC address of the first interface and the device identification of the second UP device, the CP device obtains the user group corresponding to each virtual MAC address of the first interface, and selects a user group for each user group from the N backup UP devices. Corresponding backup UP devices, the N backup UP devices include the first UP device. Based on the device identification of the first UP device, a migration instruction is sent to the first UP device. The migration instruction includes the interface identification of the second interface and the user table entry information corresponding to each terminal in the first user group. The first user group is For the user group selected by the first UP device, the user entry information of each terminal in the first user group includes a first virtual MAC address, and the first virtual MAC address is a virtual MAC address corresponding to the first user group.

The second interface is a backup interface corresponding to the first interface on the first UP device, and the first user group includes the first terminal.

Among them, the second UP device and the N backup UP devices belong to the same warm backup group.

In some embodiments, the CP device stores the first correspondence relationship and the sixth correspondence relationship, and the CP device obtains the correspondence with the first interface from the first correspondence relationship based on the device identification of the second UP device and the interface identification of the first interface. The device identifiers of the N backup UP devices and the interface identifiers of the backup interfaces on the N backup UP devices. Based on at least one virtual MAC address of the first interface, the interface of the first interface and the device identification of the second UP device, the CP device obtains the user table of each terminal included in at least one user group corresponding to the first interface from the sixth correspondence relationship item information. Based on the load sharing policy, the corresponding backup UP device is selected for each user group from N backup UP devices.

For example, assume that the CP device stores the first correspondence relationship as shown in Table 1. Referring to Figure 2, the CP device senses a fault of the UP device 2. The UP device 2 includes an interface 21 and an interface 22. For interface 21, based on the device identification Device2 of UP device 2 and the interface identification Interface21 of interface 21, the CP device obtains the device identifications of the corresponding three backup UP devices and the three backups from the first correspondence relationship shown in Table 1. The interface ID of the backup interface on the UP device. That is, the device identifier Device1 of UP device 1 and the interface identifier Interface11 of interface 11 are obtained, the device identifier Device3 of UP device 3 and the interface identifier Interface31 of interface 31 are obtained, the device identifier Device4 of UP device 4 and the interface identifier Interface41 of interface 41 are obtained. The virtual MAC address of interface 21 includes virtual MAC address 1, virtual MAC address 2 and virtual MAC address 3. Select the corresponding backup UP device as UP device 1 for user group 1 corresponding to virtual MAC address 1, and send a migration command to UP device 1. 1. Migration instruction 1 includes the interface identifier Interface11 of interface 11, virtual MAC address 1, and user table entry information corresponding to each terminal in user group 1. Select the corresponding backup UP device for user group 2 corresponding to virtual MAC address 2 as UP device 3, and send migration instruction 2 to UP device 3. Migration instruction 2 includes the interface identifier Interface31 of interface 31, virtual MAC address 2, and user group 2. User entry information corresponding to each terminal. Select the corresponding backup UP device for user group 3 corresponding to virtual MAC address 3 as UP device 4, and send migration instruction 3 to UP device 4. Migration instruction 3 includes the interface identifier Interface41 of interface 41, virtual MAC address 3, and user group 3. User entry information corresponding to each terminal. For the interface 22 on the UP device 2, refer to the above-mentioned processing of the interface 21, and the details will not be repeated here.

In the second method, when the CP device needs to migrate a terminal that comes online from the first interface, the CP device selects a virtual MAC address from at least one virtual MAC address of the first interface as the first virtual MAC address, based on the second UP device's The device identifier, the interface identifier of the first interface and the first virtual MAC address, and obtaining the device identifier of the backup UP device corresponding to the first interface and the first virtual MAC address from the third correspondence relationship, and the backup device on the backup UP device. The interface ID of the interface, and the backup UP device is used as the first UP device. Send a migration instruction to the first UP device based on the device identification of the first UP device.

In the second method, since the device identification of the backup UP device corresponding to the first interface and the first virtual MAC address and the interface identification of the backup interface on the backup UP device are obtained from the third correspondence relationship, that is to say, the backup The interface is accurately bound to the first virtual MAC address, making the backup relationship in the warm backup group controllable and facilitating smooth switching of the forwarding side behavior.

In some embodiments, for the first user group corresponding to the first virtual MAC address, when the first UP device stores user table entry information corresponding to each terminal in the first user group, the migration instruction includes the second interface The interface identifier and the first information include one or more of the interface identifier of the first interface, the device identifier of the second UP device, and the first virtual MAC address. Or, when the first UP device does not save the user table entry information corresponding to each terminal in the first user group, the migration instruction includes the interface identifier of the second interface, the first virtual MAC address and each terminal in the first user group. User entry information corresponding to each terminal.

For example, assume that the CP device stores the third corresponding relationship as shown in Table 3. Referring to Figure 2, the CP device senses a fault of the UP device 2. The UP device 2 includes an interface 21 and an interface 22. For interface 21, the virtual MAC address of interface 21 includes virtual MAC address 1, virtual MAC address 2, and virtual MAC address 3. The CP device is based on the device identifier Device2 of UP device 2, the interface identifier Interface21 of interface 21, and virtual MAC address 1. From As shown in the third correspondence relationship shown in Table 3, the corresponding device identifier Device1 of UP device 1 and the interface identifier Interface11 of interface 11 are obtained, and migration instruction 1 is sent to UP device 1. Migration instruction 1 includes the interface identifier Interface11 of interface 11, virtual MAC address 1 and user table entry information corresponding to each terminal in user group 1, or migration instruction 1 includes the interface identifier Interface11 of interface 11 and first information, and the first information includes virtual MAC address 1. Based on the device identifier Device2 of UP device 2, the interface identifier Interface21 of interface 21, and the virtual MAC address 2, the CP device obtains the corresponding device identifier Device3 of UP device 3 and the interface of interface 31 from the third correspondence relationship shown in Table 3. Identify Interface31, and send migration instruction 2 to UP device 3. Migration instruction 2 includes the interface identifier Interface31 of interface 31, virtual MAC address 2, and user table entry information corresponding to each terminal in user group 2, or migration instruction 2 includes interface 31. The interface identification Interface31 and the first information, the first information includes virtual MAC address 2. Based on the device identifier Device2 of UP device 2, the interface identifier Interface21 of interface 21, and the virtual MAC address 3, the CP device obtains the corresponding device identifier Device4 of UP device 4 and the interface of interface 41 from the third correspondence relationship shown in Table 3. Identify Interface41, and send migration instruction 3 to UP device 4. Migration instruction 3 includes the interface identifier Interface41 of interface 41, virtual MAC address 3, and user table entry information corresponding to each terminal in user group 3, or migration instruction 3 includes interface 41. The interface identification Interface41 and the first information, the first information includes virtual MAC address 3.

Step 402: The first UP device sends a query request to the first terminal based on the migration instruction.

In step 402, the first UP device may send a query request to the first terminal through the following operations 4021-4022, which are respectively.

4021: The first UP device obtains the user information of the first terminal based on the migration instruction.

In some embodiments, the migration instruction includes user entry information corresponding to each terminal in the first user group, the first user group includes the first terminal, and the user entry information of the first terminal includes user information of the first terminal. . In 4021, the first UP device randomly selects the user entry information of one terminal as the user entry information of the first terminal from the user entry information of each terminal in the first user group included in the migration instruction. Read the user information of the first terminal from the user entry information of the first terminal.

Since the migration instruction includes the user entry information of each terminal, the first UP device directly obtains the user entry information from the migration instruction, which facilitates the first UP device to obtain the user entry information and simplifies the algorithm implementation complexity.

After receiving the migration instruction, the first UP device uses the first virtual MAC address as a virtual MAC address of the second interface based on the interface identifier of the second interface, and saves the user table of each terminal in the first user group. item information. Among them, it should be noted that after the first virtual MAC address is used as a virtual MAC address of the second interface, a virtual MAC address is added to the second interface. For example, the second interface has three virtual MAC addresses, and the first virtual MAC address is added to the second interface. After the virtual MAC address is used as a virtual MAC address for the second interface, the second interface has four virtual MAC addresses.

In some embodiments, the migration instruction includes the interface identifier of the second interface and the first information. The first UP device obtains the first user group in the first user group from the fifth correspondence based on the first information and the interface identifier of the second interface. User entry information for each terminal. Select the user entry information of one terminal from the user entry information of each terminal in the first user group as the user entry information of the first terminal. Read the user information of the first terminal from the user entry information of the first terminal.

For example, referring to Figure 2, assume that the first UP device is UP device 1, and UP device 1 receives migration instruction 1. Migration instruction 1 includes the interface identifier Interface11 of interface 11 and first information. The first information includes virtual MAC address 1. Based on the first information, the user entry information of each terminal in the first user group is obtained from the fifth correspondence relationship shown in Table 5. The obtained user entry information includes the user entry information of the first terminal. From the Obtain the user information of the first terminal from the user entry information.

Wherein, after acquiring the user table entry information of each terminal in the first user group, the first UP device uses the first virtual MAC address as a virtual MAC address of the second interface based on the interface identifier of the second interface.

4022: The first UP device sends a query request to the first terminal based on the user information of the first terminal.

Step 403: The first UP device receives a query response sent by the first terminal based on the query request, where the query response includes multicast information corresponding to the first terminal.

Wherein, after the first terminal receives the query request, if the first terminal joins a certain multicast group, the first terminal sends the multicast information corresponding to the first terminal to the first UP device, and the multicast information is the first multicast group. The multicast information of the source, the multicast group corresponding to the first multicast source is the multicast group joined by the first terminal. If the first terminal does not join any multicast group, the first terminal sends a rejection response to the first UP device.

In some embodiments, the first UP device combines the user information of the first terminal and the multicast information into a record and saves the record in the seventh correspondence relationship.

In some embodiments, the above query request and query response are both based on Internet group management protocol (internet group management protocol, IGMP) encapsulated messages, or the above query request and query response are based on multicast listener discovery protocol (IGMP). multicast listener discover, MLD) encapsulated message.

Step 404: The first UP device forwards the multicast service to the first terminal based on the multicast information.

The multicast service is a multicast service multicast by the first multicast source, and the multicast group corresponding to the first multicast source is a multicast group joined by the first terminal. Optionally, the multicast service is high speed internet (HSI) or IP TV/Internet protocol TV (IPTV).

In step 404, the first UP device sends a third service request to the second forwarding device. The third service request includes the multicast information, and the multicast information includes the multicast address. The second forwarding device receives the third service request. If the second forwarding device has received the multicast service corresponding to the multicast information, it generates third downlink routing information. The third downlink routing information includes the multicast address and the fifth next hop. Information, the next hop device indicated by the fifth next hop information is the first UP device. If the second forwarding device does not receive the multicast service corresponding to the multicast information, it receives the multicast service of the first multicast source multicast based on the multicast address included in the multicast information, and generates the third downlink routing information. The downlink routing information includes the multicast address and fifth next hop information. The next hop device indicated by the fifth next hop information is the first UP device.

Referring to Figure 5, the multicast service is next sent to the first terminal. The sending process is: the second forwarding device receives the seventh service message multicast by the first multicast source based on the multicast address. The seventh service message is For messages belonging to the multicast service, the seventh service message includes multicast information, and the multicast information includes the multicast address. The third downlink routing information including the multicast address is obtained from the third downlink routing information. The fifth next hop information is used to send the seventh service message to the first UP device (such as UP device 1) based on the fifth next hop information.

The first UP device (such as UP device 1) receives the seventh service message, and based on the multicast information included in the seventh service message, obtains the user information of the first terminal from the seventh correspondence relationship, and obtains the user entry information from the saved user entry information. Obtain user entry information including the user information, and the user entry information is the user entry information of the first terminal. An eighth service message is sent to the first terminal based on the user entry information, and the eighth service message is obtained based on the seventh service message.

Optionally, the user entry information includes first downlink routing information and a first virtual MAC address (such as virtual MAC address 1), and the next hop device indicated by the first next hop information in the first downlink routing information. As the first forwarding device, the first UP device (eg, UP device 1) sends the eighth service packet to the first forwarding device through the second interface (eg, interface 11) corresponding to the first virtual MAC address. The first forwarding device receives the eighth service message and sends the eighth service message to the first terminal.

In this embodiment of the present application, the first UP device receives a migration instruction sent by the CP device. The migration instruction is used to instruct the first terminal to migrate from the second UP device to the first UP device. The first UP device is based on the migration instruction. Send a query request to the first terminal, and receive a query response sent by the first terminal based on the query request, where the query response includes multicast information corresponding to the first terminal. That is to say, the first UP device actively queries the multicast information corresponding to the multicast group joined by the first terminal through the query request based on the migration instruction. After querying the multicast information, it forwards the multicast to the first terminal based on the multicast information. service, thereby automatically restoring the multicast service and ensuring that the multicast service can be forwarded to the first terminal normally. In addition, since the first UP device queries the first terminal for multicast information corresponding to the first terminal, the first UP device does not need to save data used to obtain the multicast information, thereby saving resources of the first UP device, and because no Users are required to manually restore multicast services to improve user experience.

Referring to Figure 6, an embodiment of the present application provides a method 600 for sending multicast services. The method 600 is applied to the vBNG system 100 shown in Figure 1. The vBNG system 100 includes a CP device, a first UP device and a second UP device, the method 600 includes the following steps.

Step 601: The first UP device receives the multicast information corresponding to the first terminal sent by the second UP device. The first terminal is a terminal online on the second UP device.

Referring to step 306 of the method 300 shown in Figure 3, the second UP device sends the multicast information of the service to be requested by the first terminal and the user information of the first terminal to the first UP device. The first UP device receives the multicast information and the user information of the first terminal, forms a record of the multicast information and the user information of the first terminal, and stores it in the seventh correspondence relationship.

After step 601, if the second UP device fails or the first interface on the second UP device fails, and the first interface is any interface on the second UP device, perform the following operations of steps 602-603.

Step 602: The first UP device receives a migration instruction, which is used to instruct the first terminal to migrate to the first UP device.

The first UP device receives the migration instruction sent by the CP device. Referring to step 401 of the method 400 shown in Figure 4, the CP device uses the first method or the second method introduced in step 401 to send a migration instruction to the first UP device.

In some embodiments, the migration instruction includes an interface identifier of the second interface and user entry information corresponding to each terminal in the first user group. Alternatively, the migration instruction includes the interface identifier of the second interface and first information, and the first information includes one or more of the device identifier of the second UP device, the interface identifier of the first interface, and the first virtual MAC address.

Wherein, the first user group is a user group corresponding to the first interface on the first UP device, and each user group in the first user group The user entry information of the terminal includes a first virtual MAC address, the first virtual MAC address is a virtual MAC address corresponding to the first user group, and the second interface is a backup interface corresponding to the first interface.

Step 603: The first UP device forwards the multicast service to the first terminal based on the multicast information and the migration instruction.

In step 603, the first UP device forwards the multicast service to the first terminal through the following operations 6031-6033, which are respectively.

6031: The first UP device obtains the first user entry information based on the migration instruction. The first user entry information is used to transmit the service of the first terminal, and obtains the user information of the first terminal from the first user entry information.

In some embodiments, the migration instruction includes user entry information corresponding to each terminal in the first user group, the first user group includes the first terminal, and the user entry information of the first terminal includes user information of the first terminal. .

6032: The first UP device obtains the multicast information corresponding to the first terminal from the seventh correspondence relationship based on the user information of the first terminal.

6033: The first UP device forwards the multicast service to the first terminal based on the multicast information.

For the detailed implementation process of the first UP device forwarding the multicast service to the first terminal based on the multicast information, please refer to the relevant content in step 404 of the method 400 shown in Figure 4, which will not be described in detail here.

In this embodiment of the present application, the first UP device receives the multicast information corresponding to the first terminal sent by the second UP device, and the first terminal is a terminal that is online on the second UP device. The first UP device receives a migration instruction, which is used to instruct the first terminal to migrate to the first UP device. The first UP device forwards the multicast service to the first terminal based on the multicast information and the migration instruction. Since the first UP device receives the multicast information corresponding to the first terminal sent by the second UP device, when the first UP device receives a migration instruction for instructing to migrate the first terminal, the first UP device can quickly base on the migration instruction. and the multicast information forwards the multicast service to the first terminal, that is, the UP device on which the terminal is online actively sends the multicast information corresponding to the terminal to other UP devices, so that when the UP device fails, other UP devices can quickly and automatically restore the group. broadcast service, ensuring that the multicast service can be forwarded to the first terminal normally, and also improving the efficiency of restoring the multicast service. Since users are not required to manually restore multicast services, user experience is improved.

Referring to Figure 7, an embodiment of the present application provides a device 700 for sending multicast services. The device 700 is applied in a virtual broadband access gateway vBNG system. The vBNG system includes the device 700 and a second user plane UP. equipment. The device 700 may be deployed on the first UP device 1021 in the vBNG system 100 shown in Figure 1, the UP device 1 in the system shown in Figure 2 or Figure 5, or the first UP in the method 400 shown in Figure 4 on the device. The device 700 includes:

The receiving unit 701 is configured to receive a migration instruction, which is used to instruct the migration of the first terminal to the device 700. The first terminal is a terminal online on the second UP device;

The sending unit 702 is configured to send a query request to the first terminal based on the migration instruction;

The receiving unit 701 is also configured to receive a query response sent by the first terminal based on the query request, where the query response includes multicast information corresponding to the first terminal;

The sending unit 702 is also configured to forward the multicast service to the first terminal based on the multicast information.

Optionally, for the detailed implementation process of receiving the migration instruction by the receiving unit 701, please refer to the relevant content in step 401 of the method 400 shown in Figure 4, which will not be described in detail here.

Optionally, for the detailed implementation process of sending the query request by the sending unit 702, please refer to the relevant content in step 402 of the method 400 shown in Figure 4, which will not be described in detail here.

Optionally, for the detailed implementation process of receiving the query response by the receiving unit 701, please refer to the relevant content in step 403 of the method 400 shown in Figure 4, which will not be described in detail here.

Optionally, for the detailed implementation process of the sending unit 702 forwarding the multicast service to the first terminal, please refer to the relevant content in step 404 of the method 400 shown in Figure 4, which will not be described in detail here.

Optionally, the multicast information is multicast information corresponding to the first multicast source, and the multicast group corresponding to the first multicast source is a multicast group joined by the first terminal.

Optionally, the multicast information includes the multicast address of the first multicast source.

Optionally, the device 700 also includes:

The processing unit 703 is configured to obtain first user entry information based on the migration instruction, and the first user entry information is used to transmit services of the first terminal.

Optionally, for the detailed implementation process of the processing unit 703 obtaining the first user entry information, please refer to the relevant content in step 4021 of the method 400 shown in Figure 4, which will not be described in detail here.

Optionally, the migration instruction includes: the device identification of the second UP device, the interface identification of the first interface, or the virtual media access control layer MAC address of the first interface. The first interface is the first terminal in the second UP. The online interface on the device.

Optionally, the migration instruction includes first user entry information, and the first user entry information is used to transmit services of the first terminal.

Optionally, the receiving unit 701 is used to receive the migration instruction sent by the CP device.

Optionally, both the query request and the query response are messages encapsulated based on the Internet Group Management Protocol IGMP, or both the query request and the query response are messages encapsulated based on the Multicast Listener Discovery Protocol MLD.

Optionally, the device 700 and the second UP device are located in the same power supply group, or the device 700 and the second UP device are located in different power supply groups, and the power supply group includes multiple UP devices.

In the embodiment of the present application, when the receiving unit receives the migration instruction for instructing to migrate the first terminal, the sending unit sends a query request to the first terminal based on the migration instruction, and the receiving unit receives the query request sent by the first terminal based on the query request. Query response, the query response includes multicast information corresponding to the first terminal. That is to say, the sending unit actively queries the multicast information corresponding to the multicast group joined by the first terminal through the query request based on the migration instruction. After querying the multicast information, it forwards the multicast service to the first terminal based on the multicast information. Thus, the multicast service is automatically restored, ensuring that the multicast service can be forwarded to the first terminal normally and improving the user experience.

Referring to Figure 8, an embodiment of the present application provides a device 800 for sending multicast services. The device 800 is applied in a virtual broadband access gateway vBNG system. The vBNG system includes the device 800 and a second user plane UP. equipment. The device 800 may be deployed on the first UP device 1021 in the vBNG system 100 shown in Figure 1, the UP device 1 in the system shown in Figure 2 or Figure 5, or the first UP in the method 600 shown in Figure 6 on the device. The device 800 includes:

The receiving unit 801 is configured to receive multicast information corresponding to the first terminal sent by the second UP device. The first terminal is a terminal online on the second UP device;

The receiving unit 801 is also configured to receive a migration instruction, which is used to instruct the first terminal to migrate to the device 800;

The sending unit 802 is configured to forward the multicast service to the first terminal based on the multicast information and the migration instruction.

Optionally, for the detailed implementation process of the receiving unit 801 receiving the multicast information corresponding to the first terminal, please refer to the method shown in Figure 6 The relevant content in step 601 of method 600 will not be described in detail here.

Optionally, for the detailed implementation process of receiving the migration instruction by the receiving unit 801, please refer to the relevant content in step 602 of the method 600 shown in Figure 6, which will not be described in detail here.

Optionally, for the detailed implementation process of the sending unit 802 forwarding the multicast service to the first terminal, please refer to the relevant content in step 603 of the method 600 shown in Figure 6, which will not be described in detail here.

Optionally, the device 800 also includes:

The processing unit 803 is configured to obtain first user entry information based on the migration instruction, and the first user entry information is used to transmit services of the first terminal.

Optionally, for the detailed implementation process of the processing unit 803 obtaining the first user entry information, please refer to the relevant content in step 602 of the method 600 shown in FIG. 6, which will not be described in detail here.

Optionally, the migration instruction includes: the device identifier of the second UP device, the interface identifier of the first interface, or the virtual media access control layer MAC address of the first interface, and the first interface is where the first terminal is located in the second UP device. The online interface on the UP device.

Optionally, the sending unit 802 is also used to:

Send multicast information corresponding to the second terminal to the second UP device. The second terminal is a terminal online on the device 800 .

Optionally, the device 800 and the second UP device are located in the same power supply group, or the device 800 and the second UP device are located in different power supply groups, and the power supply group includes multiple UP devices.

Optionally, the second UP device includes a first interface. The first interface is an interface through which the first terminal goes online. The device 800 includes a second interface. The second interface is the first interface after the first terminal migrates to the device 800. The interface for the terminal to go online. The first interface and the second interface are two interfaces in the same warm backup group.

Optionally, in the warm backup group, the second interface is a backup interface of the first interface for the first virtual MAC address, the first virtual MAC address is the address of the first interface, and the first virtual MAC address corresponds to the first terminal.

Optionally, the multicast information of the first multicast source includes the multicast address of the first multicast source.

In this embodiment of the present application, the receiving unit receives multicast information corresponding to the first terminal sent by the second UP device. The first terminal is a terminal online on the second UP device, and receives a migration instruction. The migration instruction is used to indicate Migrate the first terminal to the first UP device. The sending unit forwards the multicast service to the first terminal based on the multicast information and the migration instruction. Since the receiving unit receives the multicast information corresponding to the first terminal sent by the second UP device, when the receiving unit receives the relocation instruction for instructing to migrate the first terminal, the sending unit sends a message to the first terminal based on the relocation instruction and the multicast information. The terminal forwards the multicast service, that is, the UP device on which the terminal is online actively sends the multicast information corresponding to the terminal to other UP devices, so that when the UP device fails, the other UP devices can automatically restore the multicast service, ensuring that the first UP device can normally forward the multicast service to the first UP device. The terminal forwards multicast services.

Referring to Figure 9, an embodiment of the present application provides a virtual broadband access gateway vBNG system 900. The vBNG system includes a CP device 901, a first user plane UP device 902 and a second UP device 903. The vBNG system 900 can It is the vBNG system shown in Figure 1, the vBNG system 100 to which the method 300 shown in Figure 3 is applied, or the vBNG system 100 to which the method 600 shown in Figure 6 is applied. The vBNG system 900 includes:

The second UP device 903 is used to send multicast information corresponding to the first terminal to the first UP device. The first terminal is a terminal that is online on the second UP device 903;

The CP device 901 is configured to send a migration instruction to the first UP device 902 based on the failure of the second UP device 903. The migration instruction is used to instruct the first terminal to migrate to the first UP device 902;

The first UP device 902 is configured to forward the multicast service to the first terminal based on the multicast information and the migration instruction.

Optionally, for the detailed implementation process of the second UP device 903 sending the multicast information corresponding to the first terminal to the first UP device, please refer to the relevant content in step 601 of the method 600 shown in Figure 6, which will not be described in detail here.

Optionally, for the detailed implementation process of the CP device 901 sending the migration instruction to the first UP device 902, please refer to the relevant content in step 602 of the method 600 shown in Figure 6, which will not be described in detail here.

Optionally, for the detailed implementation process of the first UP device 902 forwarding the multicast service to the first terminal, please refer to the relevant content in step 603 of the method 600 shown in Figure 6, which will not be described in detail here.

Optionally, the second UP device 903 is also configured to send multicast information corresponding to the first terminal to the third UP device.

Optionally, the first UP device, the second UP device and the third UP device are devices in the same warm backup group.

In this embodiment of the present application, since the second UP device sends the multicast information corresponding to the first terminal to the first UP device, the first UP device receives the migration instruction sent by the CP device to instruct the migration of the first terminal. At that time, the first UP device forwards the multicast service to the first terminal based on the migration instruction and the multicast information. That is, the UP device on which the terminal is online actively sends the multicast information corresponding to the terminal to other UP devices, so that when the UP device fails, , other UP devices can automatically restore multicast services to ensure that multicast services can be forwarded to the first terminal normally.

Referring to Figure 10, an embodiment of the present application provides a schematic diagram of a device 1000 for sending service messages. The device 1000 may be the first UP device provided in any of the above embodiments. For example, the device 1000 may be the first UP device 1021 in the vBNG 100 shown in Figure 1, or the first UP device in the method 300 shown in Figure 3. device or the first UP device in the method 400 shown in FIG. 4 . The device 1000 includes at least one processor 1001, internal connections 1002, memory 1003 and at least one transceiver 1004.

The device 1000 is a device with a hardware structure and can be used to implement the functional modules in the device 800 shown in FIG. 8 . For example, those skilled in the art can imagine that the corresponding functions of the receiving unit 801, the sending unit 802 and the processing unit 803 in the device 800 shown in FIG. 8 can be implemented by calling the code in the memory 1003 by the at least one processor 1001.

The device 1000 can also be used to implement the function of the first UP device in any of the above embodiments.

The above-mentioned processor 1001 may be a general central processing unit (CPU), a network processor (NP), a microprocessor, an application-specific integrated circuit (ASIC), or a or A plurality of integrated circuits used to control the execution of the program of this application.

The internal connection 1002 may include a path for transmitting information between the components. The internal connection 1002 may be a single board or a bus, etc.

The above-mentioned at least one transceiver 1004 is used to communicate with other devices or communication networks.

The above-mentioned memory 1003 can be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (random access memory, RAM) or other types that can store information and instructions. type of dynamic storage device, which can also be electrically erasable programmable read-only memory (electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.) , disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited thereto. The memory can exist independently and be connected to the processor through a bus. Memory can also be integrated with the processor.

Among them, the memory 1003 is used to store the application code for executing the solution of the present application, and the processor 1001 controls the execution. The processor 1001 is used to execute the application code stored in the memory 1003, and cooperate with at least one transceiver 1004, so that the device 1000 implements the functions in the patent method.

In specific implementation, as an embodiment, the processor 1001 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 10 .

In specific implementation, as an embodiment, the device 1000 may include multiple processors, such as the processor 1001 and the processor 1007 in Figure 10 . Each of these processors may be a single-CPU processor or a multi-CPU processor. A processor here may refer to one or more devices, circuits, and/or processing cores for processing data (eg, computer program instructions).

Referring to Figure 11, an embodiment of the present application provides a schematic diagram of a device 1100 for sending service messages. The device 1100 may be the first UP device provided in any of the above embodiments. For example, the device 1100 may be the first UP device 1121 in the vBNG 110 shown in Figure 1 , or the first UP device in the method 300 shown in Figure 3 device or the first UP device in the method 600 shown in FIG. 6 . The device 1100 includes at least one processor 1101, internal connections 1102, memory 1103 and at least one transceiver 1104.

The device 1100 is a device with a hardware structure and can be used to implement the functional modules in the device 900 shown in FIG. 9 . For example, those skilled in the art can imagine that the corresponding functions of the receiving unit 901, the sending unit 902 and the processing unit 903 in the device 900 shown in FIG. 9 can be implemented by calling the code in the memory 1103 by the at least one processor 1101.

The device 1100 can also be used to implement the function of the first UP device in any of the above embodiments.

The above-mentioned processor 1101 may be a general central processing unit (CPU), a network processor (NP), a microprocessor, an application-specific integrated circuit (ASIC), or a or A plurality of integrated circuits used to control the execution of the program of this application.

The internal connection 1102 may include a path for transmitting information between the components. The internal connection 1102 may be a single board or a bus, etc.

The above-mentioned at least one transceiver 1104 is used to communicate with other devices or communication networks.

The above-mentioned memory 1103 can be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (random access memory, RAM) or other types that can store information and instructions. Type of dynamic storage device, it can also be electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disk storage, optical disc Storage (including compressed optical discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store the desired program code in the form of instructions or data structures and can be used by Any other media accessible by a computer, but not limited to this. The memory can exist independently and be connected to the processor through a bus. Memory can also be integrated with the processor.

Among them, the memory 1103 is used to store the application program code for executing the solution of the present application, and is controlled by the processor 1101 implement. The processor 1101 is used to execute the application program code stored in the memory 1103, and cooperate with at least one transceiver 1104, so that the device 1100 implements the functions in the patent method.

In specific implementation, as an embodiment, the processor 1101 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 11 .

In specific implementation, as an embodiment, the device 1100 may include multiple processors, such as the processor 1101 and the processor 1107 in FIG. 11 . Each of these processors may be a single-CPU processor or a multi-CPU processor. A processor here may refer to one or more devices, circuits, and/or processing cores for processing data (eg, computer program instructions).

Referring to Figure 12, Figure 12 shows a schematic structural diagram of a device 1200 for sending service messages provided by an exemplary embodiment of the present application. Optionally, the device 1200 is the first UP device of any of the above embodiments. For example, the device 1200 is the first UP device 1021 in the vBNG 100 shown in Figure 1, or the first UP device in the method 300 shown in Figure 3, or the first UP device in the method 400 shown in Figure 4, or Figure 7 Device 700 is shown, or device 1000 is described in Figure 10. In other words, the first UP device in the method 300 shown in FIG. 3 or the method 400 shown in FIG. 4 can be implemented by the device 1200 shown in FIG. 12 .

As shown in Figure 12, device 1200 includes: a main control board 1201 and an interface board 1202.

The main control board 1201 is also called the main processing unit (MPU) or the route processor card. The main control board 1201 is used to control and manage each component in the device 1200, including route calculation and device management. , equipment maintenance, protocol processing functions. The main control board 1201 includes: a central processing unit 12011 and a memory 12012.

The interface board 1202 is also called a line processing unit (LPU), line card or service board. The interface board 1202 is used to provide various service interfaces and implement data packet forwarding. Business interfaces include but are not limited to Ethernet interfaces, POS (Packet over SONET/SDH) interfaces, etc. Ethernet interfaces are, for example, Flexible Ethernet Clients (FlexE Clients). The interface board 1202 includes: a central processor 12021, a network processor 12022, a forwarding entry memory 12023, and a physical interface card (physical interface card, PIC) 12024.

The central processor 12021 on the interface board 1202 is used to control and manage the interface board 1202 and communicate with the central processor 12011 on the main control board 1201.

The network processor 12022 is used to implement packet forwarding processing. The network processor 12022 may be in the form of a forwarding chip. The forwarding chip can be a network processor (NP). In some embodiments, the forwarding chip can be implemented through an application-specific integrated circuit (ASIC) or a field programmable gate array (FPGA). Specifically, the network processor 12022 is used to forward the received message based on the forwarding table stored in the forwarding table memory 12023. If the destination address of the message is the address of the device 1200, then upload the message to the CPU (such as The central processor 12021) processes; if the destination address of the message is not the address of the device 1200, the next hop and outgoing interface corresponding to the destination address are found from the forwarding table based on the destination address, and the message is forwarded to the destination. The outbound interface corresponding to the address. Among them, the processing of uplink packets may include: processing of the packet incoming interface, forwarding table search; and the processing of downlink packets may include: forwarding table search, etc. In some embodiments, the central processing unit can also perform the function of the forwarding chip, such as implementing software forwarding based on a general-purpose CPU, so that there is no need for a forwarding chip in the interface board.

The physical interface card 12023 is used to implement the docking function of the physical layer. The original traffic enters the interface board 1202 through this, and the processed packets are sent out from the physical interface card 1202. The physical interface card 12023 is also called a daughter card and can be installed on the interface board 1202. It is responsible for converting photoelectric signals into messages and checking the validity of the messages before forwarding them to the network processor 12022. reason. In some embodiments, the central processor can also perform the functions of the network processor 12022, such as implementing software forwarding based on a general-purpose CPU, so that the network processor 12022 is not required in the physical interface card 12023.

Optionally, the device 1200 includes multiple interface boards. For example, the device 1200 also includes an interface board 1203. The interface board 1203 includes: a central processor 12031, a network processor 12032, a forwarding entry memory 12033, and a physical interface card 12034. The functions and implementation methods of each component in the interface board 1203 are the same as or similar to those of the interface board 1202, and will not be described again here.

Optionally, the device 1200 also includes a switching network board 1204. The switching fabric unit 1204 may also be called a switching fabric unit (switch fabric unit, SFU). When the device 1200 has multiple interface boards, the switching network board 1204 is used to complete data exchange between the interface boards. For example, the interface board 1202 and the interface board 1203 can communicate through the switching network board 1204.

The main control board 1201 and the interface board 1202 are coupled. For example. The main control board 1201, the interface board 1202, the interface board 1203, and the switching network board 1204 are connected to the system backplane through a system bus to achieve intercommunication. In a possible implementation, an inter-process communication protocol (IPC) channel is established between the main control board 1201 and the interface board 1202, and the main control board 1201 and the interface board 1202 communicate through the IPC channel.

Logically, device 1200 includes a control plane and a forwarding plane. The control plane includes a main control board 1201 and a central processor. The forwarding plane includes various components that perform forwarding, such as forwarding entry memory 12023, physical interface card 12024, and network processor 12022. . The control plane executes functions such as router, generates forwarding tables, processes signaling and protocol messages, configures and maintains the status of devices. The control plane sends the generated forwarding tables to the forwarding plane. On the forwarding plane, the network processor 12022 is based on the control plane. The delivered forwarding table looks up the packets received by physical interface card 12024 and forwards them. The forwarding table delivered by the control plane can be stored in the forwarding table item storage 12023. In some embodiments, the control plane and forwarding plane may be completely separate and not on the same device.

It is worth noting that there may be one or more main control boards 1201, and when there are multiple main control boards, they may include a main main control board and a backup main control board. There may be one or more interface boards. The stronger the data processing capability of the device 1200, the more interface boards are provided. There can also be one or more physical interface cards on the interface board. There may be no switching network board 1204, or there may be one or more switching network boards. When there are multiple switching network boards, load sharing and redundant backup can be realized together. Under the centralized forwarding architecture, the device 1200 does not need a switching network board, and the interface board is responsible for processing the service data of the entire system. Under the distributed forwarding architecture, the device 1200 can have at least one switching network board 1204. The switching network board 1204 implements data exchange between multiple interface boards and provides large-capacity data exchange and processing capabilities. Therefore, the data access and processing capabilities of the distributed architecture device 1200 are greater than those of the centralized architecture device. Optionally, the device 1200 can also be in the form of only one board, that is, there is no switching network board. The functions of the interface board and the main control board are integrated on this board. In this case, the central processor and the main control board on the interface board The central processor on the board can be combined into one central processor on this board to perform the superimposed functions of the two. This form of equipment has low data exchange and processing capabilities (for example, low-end switches or routers and other networks equipment). The specific architecture used depends on the specific networking deployment scenario and is not limited here.

Referring to Figure 13, Figure 13 shows a schematic structural diagram of a device 1300 for sending service messages provided by an exemplary embodiment of the present application. Optionally, the device 1300 is the first UP device of any of the above embodiments. For example, the device 1300 is the first UP device 1021 in the vBNG 100 shown in Figure 1, or the first UP device in the method 300 shown in Figure 3, or the first UP device in the method 600 shown in Figure 6, or Figure 8 Device 800 is shown, or device 1100 is described in Figure 11. In other words, the first UP device in the method 300 shown in FIG. 3 or the method 600 shown in FIG. 6 can be implemented by the device 1300 shown in FIG. 13 .

As shown in Figure 13, device 1300 includes: a main control board 1301 and an interface board 1302.

The main control board 1301 is also called a main processing unit (MPU) or a route processor card. The main control board 1301 is used to control and manage various components in the device 1300, including route calculation and device management. , Equipment maintenance and protocol processing functions. The main control board 1301 includes: a central processing unit 13011 and a memory 13012.

The interface board 1302 is also called a line interface unit card (line processing unit, LPU), line card (line card) or service board. The interface board 1302 is used to provide various service interfaces and implement data packet forwarding. Business interfaces include but are not limited to Ethernet interfaces, POS (Packet over SONET/SDH) interfaces, etc. Ethernet interfaces are, for example, Flexible Ethernet Clients (FlexE Clients). The interface board 1302 includes: a central processor 13021, a network processor 13022, a forwarding entry memory 13023, and a physical interface card (physical interface card, PIC) 13024.

The central processor 13021 on the interface board 1302 is used to control and manage the interface board 1302 and communicate with the central processor 13011 on the main control board 1301.

The network processor 13022 is used to implement packet forwarding processing. The network processor 13022 may be in the form of a forwarding chip. The forwarding chip can be a network processor (NP). In some embodiments, the forwarding chip can be implemented through an application-specific integrated circuit (ASIC) or a field programmable gate array (FPGA). Specifically, the network processor 13022 is used to forward the received message based on the forwarding table stored in the forwarding table memory 13023. If the destination address of the message is the address of the device 1300, then upload the message to the CPU (such as The central processor 13021) processes; if the destination address of the message is not the address of the device 1300, the next hop and outgoing interface corresponding to the destination address are found from the forwarding table based on the destination address, and the message is forwarded to the destination. The outbound interface corresponding to the address. Among them, the processing of uplink packets may include: processing of the packet incoming interface, forwarding table search; and the processing of downlink packets may include: forwarding table search, etc. In some embodiments, the central processing unit can also perform the function of the forwarding chip, such as implementing software forwarding based on a general-purpose CPU, so that there is no need for a forwarding chip in the interface board.

The physical interface card 13023 is used to implement the docking function of the physical layer. The original traffic enters the interface board 1302 through this, and the processed packets are sent out from the physical interface card 1302. The physical interface card 13023 is also called a daughter card and can be installed on the interface board 1302. It is responsible for converting photoelectric signals into messages and checking the validity of the messages before forwarding them to the network processor 13022 for processing. In some embodiments, the central processor can also perform the functions of the network processor 13022, such as implementing software forwarding based on a general-purpose CPU, so that the network processor 13022 is not required in the physical interface card 13023.

Optionally, the device 1300 includes multiple interface boards. For example, the device 1300 also includes an interface board 1303. The interface board 1303 includes: a central processor 13031, a network processor 13032, a forwarding entry memory 13033, and a physical interface card 13034. The functions and implementation methods of each component in the interface board 1303 are the same as or similar to those of the interface board 1302, and will not be described again here.

Optionally, the device 1300 also includes a switching network board 1304. The switching fabric unit 1304 may also be called a switching fabric unit (switch fabric unit, SFU). When the device 1300 has multiple interface boards, the switching network board 1304 is used to complete data exchange between the interface boards. For example, the interface board 1302 and the interface board 1303 can communicate through the switching network board 1304.

The main control board 1301 and the interface board 1302 are coupled. For example. The main control board 1301, the interface board 1302, the interface board 1303, and the switching network board 1304 are connected to the system backplane through a system bus to achieve intercommunication. In a possible implementation, an inter-process communication protocol (IPC) channel is established between the main control board 1301 and the interface board 1302, and the main control board 1301 and the interface board 1302 communicate through the IPC channel.

Logically, device 1300 includes a control plane and a forwarding plane. The control plane includes a main control board 1301 and a central processor. The forwarding plane includes various components that perform forwarding, such as forwarding entry memory 13023, physical interface card 13024, and network processor 13022. . The control plane executes functions such as router, generates forwarding tables, processes signaling and protocol messages, configures and maintains device status. The control plane sends the generated forwarding tables to the forwarding plane. On the forwarding plane, the network processor 13022 is based on the control plane. The delivered forwarding table looks up the table and forwards the packets received by the physical interface card 13024. The forwarding table delivered by the control plane can be stored in the forwarding table item storage 13023. In some embodiments, the control plane and forwarding plane may be completely separate and not on the same device.

It is worth noting that there may be one or more main control boards 1301, and when there are multiple main control boards, they may include a main main control board and a backup main control board. There may be one or more interface boards. The stronger the data processing capability of the device 1300, the more interface boards are provided. There can also be one or more physical interface cards on the interface board. There may be no switching network board 1304, or there may be one or more switching network boards. When there are multiple switching network boards, load sharing and redundant backup can be realized together. Under the centralized forwarding architecture, the device 1300 does not need a switching network board, and the interface board is responsible for processing the service data of the entire system. Under the distributed forwarding architecture, the device 1300 can have at least one switching network board 1304. The switching network board 1304 implements data exchange between multiple interface boards and provides large-capacity data exchange and processing capabilities. Therefore, the data access and processing capabilities of the distributed architecture device 1300 are greater than those of the centralized architecture device. Optionally, the device 1300 can also be in the form of only one board, that is, there is no switching network board. The functions of the interface board and the main control board are integrated on this board. In this case, the central processor and the main control board on the interface board The central processor on the board can be combined into one central processor on this board to perform the superimposed functions of the two. This form of equipment has low data exchange and processing capabilities (for example, low-end switches or routers and other networks equipment). The specific architecture used depends on the specific networking deployment scenario and is not limited here.

Those of ordinary skill in the art can understand that all or part of the steps to implement the above embodiments can be completed by hardware, or can be completed by instructing relevant hardware through a program. The program can be stored in a computer-readable storage medium. The above-mentioned The storage media mentioned can be read-only memory, magnetic disks or optical disks, etc.

The above are only optional embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the principles of the present application shall be included in the protection scope of the present application. Inside.

Claims

A method for sending multicast services, the method is applied to the first user plane UP device in the virtual broadband access gateway vBNG system, the vBNG system also includes a second UP device, characterized in that the method includes:

The first UP device receives a migration instruction, the migration instruction is used to instruct the first terminal to migrate to the first UP device, and the first terminal is a terminal online on the second UP device;

The first UP device sends a query request to the first terminal based on the migration instruction;

The first UP device receives a query response sent by the first terminal based on the query request, where the query response includes multicast information corresponding to the first terminal;

The first UP device forwards the multicast service to the first terminal based on the multicast information.
The method of claim 1, wherein the multicast information is the multicast information corresponding to the first multicast source, and the multicast group corresponding to the first multicast source is joined by the first terminal. Multicast group.
The method of claim 2, wherein the multicast information includes the multicast address of the first multicast source.
The method according to any one of claims 1-3, characterized in that the method further includes:

The first UP device acquires first user entry information based on the migration instruction, and the first user entry information is used to transmit services of the first terminal.
The method according to any one of claims 1 to 4, characterized in that the migration instruction includes: a device identifier of the second UP device, an interface identifier of the first interface, or a virtual media interface of the first interface. Enter the control layer MAC address, and the first interface is the interface through which the first terminal goes online on the second UP device.
The method according to any one of claims 1 to 3, characterized in that the migration instruction includes the first user entry information, and the first user entry information is used to transmit services of the first terminal. .
The method according to any one of claims 1 to 6, characterized in that the vBNG system further includes a control plane CP device, and the first UP device receives a migration instruction, including:

The first UP device receives the migration instruction sent by the CP device.
The method according to any one of claims 1 to 7, characterized in that the query request and the query response are both messages encapsulated based on Internet Group Management Protocol IGMP, or the query request and the query response The responses are all packets encapsulated based on the multicast listener discovery protocol MLD.
The method according to any one of claims 1 to 8, characterized in that the first UP device and the second UP device are located in the same power supply group, or the first UP device and the second UP device The devices are located in different power supply groups, and the power supply groups include multiple UP devices.
A method for sending multicast services, the method is applied to the first user plane UP device in the virtual broadband access gateway vBNG system, the vBNG system also includes a second UP device, characterized in that the method includes:

The first UP device receives the multicast information corresponding to the first terminal sent by the second UP device, and the first terminal is a terminal online on the second UP device;

The first UP device receives a migration instruction, where the migration instruction is used to instruct the first terminal to migrate to the first UP device;

The first UP device forwards the multicast service to the first terminal based on the multicast information and the migration instruction.
The method of claim 10, further comprising:

The first UP device acquires first user entry information based on the migration instruction, and the first user entry information is used to transmit services of the first terminal.
The method according to claim 10 or 11, characterized in that the migration instruction includes: the device identification of the second UP device, the interface identification of the first interface, or the virtual media access control layer of the first interface. MAC address, and the first interface is the interface through which the first terminal goes online on the second UP device.
The method of claim 10, wherein the migration instruction includes first user entry information, and the first user entry information is used to transmit services of the first terminal.
The method according to any one of claims 10-13, characterized in that the method further includes:

The first UP device sends multicast information corresponding to a second terminal to the second UP device. The second terminal is a terminal that is online on the first UP device.
The method according to any one of claims 10 to 14, characterized in that the first UP device and the second UP device are located in the same power supply group, or the first UP device and the second UP device The devices are located in different power supply groups, and the power supply groups include multiple UP devices.
The method according to any one of claims 10 to 15, characterized in that the second UP device includes a first interface, the first interface is an interface for the first terminal to go online, and the first UP device Including a second interface, the second interface is the interface through which the first terminal goes online after the first terminal migrates to the first UP device, and the first interface and the second interface are the same temperature backup Two interfaces in the group.
The method of claim 16, wherein the second interface in the warm backup group is the backup interface of the first interface for the first virtual MAC address, and the first virtual MAC address is the backup interface of the first virtual MAC address. The address of the first interface and the first virtual MAC address correspond to the first terminal.
The method according to any one of claims 10 to 17, characterized in that the multicast information is multicast information corresponding to the first multicast source, and the multicast group corresponding to the first multicast source is the The multicast group that the first terminal joins.
The method of claim 18, wherein the multicast information of the first multicast source includes a multicast address of the first multicast source.
A method for sending multicast services, the method is applied to a virtual broadband access gateway vBNG system, the vBNG system includes a CP device, a first user plane UP device and a second UP device, characterized in that the method includes :

The second UP device sends the multicast information corresponding to the first terminal to the first UP device, and the first terminal is a terminal online on the second UP device;

Based on the failure of the second UP device, the CP device sends a migration instruction to the first UP device, where the migration instruction is used to instruct the first terminal to migrate to the first UP device;

The first UP device forwards the multicast service to the first terminal based on the multicast information and the migration instruction.
The method of claim 20, further comprising:

The second UP device sends the multicast information corresponding to the first terminal to the third UP device.
The method of claim 21, wherein the first UP device, the second UP device and the third UP device are devices in the same warm backup group.
The method according to any one of claims 20 to 22, characterized in that the multicast information is multicast information corresponding to the first multicast source, and the multicast group corresponding to the first multicast source is the The multicast group that the first terminal joins.
The method of claim 23, wherein the multicast information of the first multicast source includes a multicast address of the first multicast source.
A virtual broadband access gateway vBNG system, the vBNG system includes a CP device, a first user plane UP device and a second UP device, characterized by:

The second UP device is configured to send multicast information corresponding to a first terminal to the first UP device, and the first terminal is a terminal online on the second UP device;

The CP device is configured to send a migration instruction to the first UP device based on a failure of the second UP device, where the migration instruction is used to instruct the first terminal to migrate to the first UP device;

The first UP device is configured to forward multicast services to the first terminal based on the multicast information and the migration instruction.
The system of claim 25, wherein the second UP device is further configured to send the multicast information corresponding to the first terminal to the third UP device.
The system of claim 26, wherein the first UP device, the second UP device and the third UP device are devices in the same warm backup group.
The system according to any one of claims 25 to 27, wherein the multicast information is multicast information corresponding to the first multicast source, and the multicast group corresponding to the first multicast source is the The multicast group that the first terminal joins.
The system of claim 28, wherein the multicast information of the first multicast source includes a multicast address of the first multicast source.
A device for sending multicast services, characterized in that the device includes:

A processor and a memory, the memory is used to store programs, the processor is used to execute the programs in the memory, so that the device completes the method according to any one of claims 1-9.
A device for sending multicast services, characterized in that the device includes:

A processor and a memory, the memory is used to store programs, the processor is used to execute the programs in the memory, so that the device completes the method according to any one of claims 10-19.
A computer-readable storage medium on which a computer program is stored, characterized in that when the computer program is executed by a computer, the method according to any one of claims 1-19 is implemented.
A computer program product, characterized in that the computer program product includes a computer program stored in a computer-readable storage medium, and the computing program is loaded by a processor to implement any one of claims 1-19 method described.