WO2012013050A1

WO2012013050A1 - Method and server used for information synchronization between master equipment and standby equipment

Info

Publication number: WO2012013050A1
Application number: PCT/CN2011/072892
Authority: WO
Inventors: 冷通; 龚超美
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-07-28
Filing date: 2011-04-15
Publication date: 2012-02-02
Also published as: CN101902360A

Abstract

The present invention discloses a method and server used for information synchronization between a master equipment and a standby equipment. The method comprises the following steps: the master equipment and the standby equipment establish a synchronization channel which comprises an equipment level channel, a subcard level channel and a backup group level channel on the subcard; the master equipment determines that some user information needs to be synchronized, determines the corresponding subcard level channel or the backup group level channel according to the backup group to which the user belongs, encapsulates synchronization information according to the address and the port which corresponds to the subcard level channel or the backup group level channel, and transmits the encapsulated synchronization information to the standby equipment through the subcard level channel or the backup group level channel; the standby equipment analyzes the synchronization information to acquire the address and the port and forwards the synchronization information to the subcard corresponding to the port; and the subcard processes the synchronization information. With the present invention, the problem of high load of a main control unit is solved, the mode is not limited by the performance bottleneck of the main control unit, and reliable guarantee is provided for the switching between the master equipment and the standby equipment.

Description

TECHNICAL FIELD The present invention relates to the field of communications, and in particular to an information synchronization method and server between primary and backup devices. BACKGROUND OF THE INVENTION The service control layer of a broadband metropolitan area network is a unique layer of a service access network connected to a core switching network. A device that plays an important role is a BRAS (Broadband Remote Access Server), which mainly undertakes service connection. Into control and user management functions. With the demand for high-quality security services provided by the network, higher requirements are placed on the performance and reliability of the BRAS products in the service control layer. In order to ensure the smooth operation of the services, the BRAS dual-system hot backup is usually adopted. . Figure 1 shows the structure of the BRAS dual-system hot backup network. The SR (Server Router) is the core device of the metropolitan area network. It is connected to BRAS 2 and BRAS 3. The two BRAS devices are dual. The hot backup function is connected to the SW (switch device) 4 under the BRAS device and accesses the user through the switch.

BRAS dual-system hot backup is to deploy two BRAS products at the control layer of the network. When working, two devices are set to a primary state through negotiation or manual configuration, one is in standby state, and the primary device is used to control user access and Record user information and back up user information to the standby device through real-time synchronization or batch synchronization. When the primary device is faulty, the active/standby switchover can be implemented quickly. Since the user information has been backed up to the standby state device, the user has no awareness during the active/standby switchover process, ensuring service quality and improving the user service experience. Backups between the two BRAS devices that are mutually backed up can support the whole machine level, line card level, port level, and virtual sub-interface level. A group of minimum abnormal switching units that back up each other is called a backup group. Multiple backup group relationships can be established between the active and standby devices. For example, the 20 ports of the primary device and the standby device are backed up, and there are 20 backup groups between the devices. Between the two BRAS devices, the VRRP (Virtual Router Redundancy Protocol, RFC2338) instance performs the election and anomaly detection switching, and the backup group is refined, which can effectively control the device when the fault occurs. Sphere of influence. As shown in Figure 2, the centralized processing of information in the BRAS dual-system hot backup network is synchronized. In the case of a single channel between the active and standby devices, information on the service daughter card is sent to the master. The unit is sent to the peer backup device by the information synchronization module of the main control unit. After the backup device is decapsulated, the information is sent to the corresponding service subcard according to the correspondence between the backup group ID and the service subcard. In the above-mentioned BRAS dual-system hot backup network, the main control unit uniformly processes all user dial-up, multicast-on-demand events, and synchronizes information with the remote backup device, and the service sub-card information is as follows: main control unit 1 > remote main Control unit> The synchronization path of the remote service daughter card adds a lot of load to the system. However, the processing capacity of the main control unit is limited. When the load exceeds its processing capacity, the main control unit will not be able to complete the information synchronization operation, which in turn affects the service quality of the system. SUMMARY OF THE INVENTION A primary object of the present invention is to provide an information synchronization method and a server between primary and backup devices to solve at least the problem that the above-mentioned main control unit has a large load. According to an aspect of the present invention, a method for synchronizing information between primary and backup devices is provided, including: a primary device and a standby device establish a synchronization channel, where the synchronization channel includes a device-level channel and a daughter-card channel, wherein the device-level channel transmits information. The synchronization control message, the sub-card level channel transmits the information synchronization data message, and the main device and the standby device establish the sub-card level channel through the information synchronization control message; the main device encapsulates the user information into the information synchronization data message and sends the information through the sub-card level channel. The standby device synchronizes the channel encapsulation information in the data message according to the received information, and forwards the information synchronization data message to the corresponding subcard, and the subcard processes the information synchronization data message. The channel encapsulation information includes an address and a port number of the sub-card level channel. The information synchronization control message carries the address of the sub-card level channel, the port number, and the backup group information for sending the information synchronization data message through the channel. The backup group information includes the backup group number and the correspondence between the backup group and the port. The address of the sub-card level channel is the same as the address of the device-level channel, and the device-level channel and the sub-card level channel are distinguished by the port number. The triggering the primary device to send the information synchronization data message includes at least one of the following: the user goes online; the user goes offline; and the user information changes. When the user information on the standby device is lost, the method further includes: the standby device sends the information synchronization control message to the active device through the device-level channel, and notifies the batch synchronization operation; after the primary device receives the information synchronization control message, The locally stored user information is sent to the standby device through the daughter card level channel; after receiving the user information, the standby device sends the message to the corresponding daughter card for processing. According to another aspect of the present invention, a method for synchronizing information between a primary and a backup device is provided, including: a primary device and a backup device establish a synchronization channel, where the synchronization channel includes a device level channel and a backup group level channel, wherein the device level channel The information synchronization control message is transmitted, the backup group level channel transmits the information synchronization data message, and the primary device and the standby device establish a backup group level channel through the information synchronization control message; the primary device encapsulates the user information into the information synchronization data message through the backup group level channel. And sending to the backup device; the standby device synchronizes the channel encapsulation information in the data message according to the received information, and forwards the information synchronization data message to the corresponding sub-card, and the sub-card processes the information synchronization data message. The channel encapsulation information includes an address and a port number of the backup group level channel. The information synchronization control message carries the address of the backup group-level channel, the port number, and the backup group information of the information synchronization data message sent through the channel. The backup group information includes a backup group number, a correspondence between the backup group and the port. The address of the backup group-level channel is the same as the address of the device-level channel. The device-level channel and the backup group-level channel are distinguished by the port number. The triggering the primary device to send the information synchronization data message includes at least one of the following: the user goes online; the user goes offline; and the user information changes. When the user information on the backup device is lost, the method further includes: the standby device sends the information synchronization control message to the active device through the device-level channel, and notifies the batch synchronization operation; after receiving the information synchronization control message, the primary device passes the The backup group-level channel sends the locally stored user information to the standby device. After receiving the user information, the backup device sends the information to the corresponding daughter card for processing. According to still another aspect of the present invention, a server, a server as a main server, includes: a device management module, configured to establish a synchronization channel with a standby server, where the synchronization channel includes a device level channel and a sub-card level channel, or The synchronization channel includes a device-level channel and a backup group-level channel. The information synchronization module is configured to determine a corresponding sub-card level channel or a backup group-level channel according to the backup group where the user is located, according to the sub-card level channel or the backup group level channel. Address and port number, will be user letter The information is encapsulated into an information synchronization data message; the data forwarding module is configured to send the encapsulated information synchronization data message to the standby server through the sub-card level channel or the backup group level channel. The device management module includes: a device-level channel establishing unit, configured to establish a device-level channel by negotiating with the standby server according to the configured address and port of the standby server; and the port allocating unit, configured for each device The sub-card or the backup group allocates a communication port; the information interaction unit is configured to exchange the correspondence between the backup group identifier and the port through the device-level channel with the standby server; the sub-card level channel establishment unit is set to be established according to the address and port of the standby server. Sub-card level channel; Backup group-level channel establishment unit, set to establish a backup group-level channel for the address and port of the standby server. The server is a broadband remote access server or a service router. According to still another aspect of the present invention, a server is provided, and the server is a standby server, including: a device management module, configured to establish a synchronization channel with the primary server, where the synchronization channel includes a device level channel and a sub-card level channel, or The synchronization channel includes a device-level channel and a backup group-level channel; the data forwarding module is configured to receive the information synchronization data message sent by the primary server, and forward the information synchronization data message to the corresponding child according to the encapsulated address and port of the information synchronization data message. Card; an information synchronization module, configured to process information synchronization data messages on the daughter card. The device management module includes: a device-level channel establishing unit, configured to establish a device-level channel by negotiating with the main server according to the configured address and port of the main server; and the port allocating unit is configured to be a device Each subcard or backup group is assigned a communication port; the information interaction unit is configured to exchange the correspondence between the backup group identifier and the port through the device level channel with the main server; the subcard level channel establishing unit is set according to the main The sub-card level channel is established by using the address and port of the server; the backup group-level channel establishing unit is set to establish a backup group-level channel for the address and port of the host server. The server is a broadband remote access server or a service router. According to the present invention, when the user equipment needs to synchronize, the child card can directly send the information synchronization data message to the standby device by using the established sub-card level channel or the backup group level channel, and the standby device completes the information synchronization operation. The problem that the main control unit has a large load is solved, and the method is not limited by the performance bottleneck of the main control unit, and provides a reliable guarantee for the active/standby switchover. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, In the drawings: FIG. 1 is a schematic diagram of a BRAS dual-system hot backup networking structure according to the related art; FIG. 2 is a schematic diagram of centralized processing information synchronization in a BRAS dual-system hot backup networking according to the related art; FIG. 4 is a block diagram showing the structure of a primary backup device according to Embodiment 3 of the present invention; FIG. 5 is a schematic diagram of information synchronization between primary and backup devices according to Embodiment 3 of the present invention; FIG. 6 is a schematic diagram of networking of primary and secondary devices in a step-by-step architecture according to Embodiment 4 of the present invention; FIG. 7 is a synchronous processing of information in a step-by-step architecture according to Embodiment 4 of the present invention; Figure 8 is a flow chart showing the information synchronization processing of the step-by-step architecture of the fourth embodiment of the present invention; Figure 9 is a block diagram showing the structure of a server according to Embodiment 5 of the present invention; Figure 10 is a block diagram of a server according to Embodiment 6 of the present invention; A block diagram of the server. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. The primary backup device in the embodiment of the present invention may be a BRAS, or an SR, or other devices. The primary device and the backup device may perform real-time synchronization, or may perform batch synchronization as needed. In order to reduce the load caused by the information synchronization of the main control unit of the main device, the embodiment of the present invention provides an information synchronization method and a server between the main standby devices. Example 1 Referring to FIG. 3, this embodiment provides a method for synchronizing information between a primary backup device, and the method includes the following steps: Step S302: A primary device and a backup device establish a synchronization channel, where the synchronization channel includes a device-level channel and a sub-channel. The card-level channel; the sub-card-level channel transmits the information synchronization data message, and the primary device and the standby device establish the sub-card-level channel through the information synchronization control message; the primary device and the standby device can establish the synchronization channel according to the following manner:

1) The active device negotiates with the standby device to establish a device-level channel according to the configured address and port of the standby device, and the device-level channel sets signaling and synchronization information between the primary device and the standby device.

2) The primary device and the standby device respectively allocate communication ports for each daughter card of the own device, and there are multiple service daughter cards on the primary device and the standby device, and each service daughter card corresponds to a group of users;

3) The primary device and the standby device exchange the correspondence between the backup group identifier and the port through the device-level channel; for example, the primary device and the backup device store the correspondence between the backup group identifier and the assigned communication port in a mapping table. When the correspondence between the backup group identifier and the port is exchanged, the mapping table can be exchanged with each other.

4) The daughter card of the active device establishes a daughter card level channel according to the address and port of the standby device. When the sub-card level channel is established, the information synchronization control message carries the address of the sub-card level channel, the port number, and the backup group information of the information synchronization data message sent through the channel. The backup group information includes the backup group number and the correspondence between the backup group and the port. The address of the daughter card level channel is the same as the address of the device level channel, and the device level channel and the daughter card level channel are distinguished by the port number. Step S304, the active device encapsulates the user information into an information synchronization data message, and sends the information to the backup device through the sub-card level channel; the primary device determines that the user information needs to be synchronized, and determines the corresponding sub-card level according to the backup group where the user is located. The channel is encapsulated into an information synchronization data message according to the address and port number corresponding to the sub-card level channel, and the encapsulated information synchronization data message is sent to the standby device through the sub-card level channel; triggering the primary device to send the information synchronization data message to at least It includes one of the following: A user goes online, a user is offline, or a user information changes. Step S306: The standby device forwards the information synchronization data message to the corresponding sub-card according to the channel encapsulation information in the received information synchronization data message, and the sub-card processes the information synchronization data message. The channel encapsulation information includes the address and port number of the sub-card level channel. When the backup information on the backup device is lost, the method further includes: the standby device sends the information synchronization control message to the active device through the device-level channel, and notifies the batch synchronization operation; after receiving the information synchronization control message, the primary device passes the The sub-card level channel sends the locally stored user information to the standby device; after receiving the user information, the standby device sends the information to the corresponding sub-card for processing. The primary and backup devices are composed of a main control unit and a plurality of service sub-cards. The service sub-card completes the protocol conversion within the sub-card, and reports the result to the main control unit to improve the throughput capacity and processing performance of the entire system. Taking IPTV as an example, the service daughter card maintains the on-demand relationship between 10,000 users and 500 program sources in the card, and the master control unit only needs to know which program sources the child card is on, and does not care about tens of thousands of users on the entire device. In the related art, when the information is synchronized, the sub-card of the active device is usually required to send the synchronization information to the main control unit of the active device, and then the main control unit sends the synchronization information to the standby device through the device-level channel. The processing load of the main control unit of the active device is increased to a large extent; while the primary device of the embodiment needs to synchronize the user information, the daughter card can directly send the information synchronization data message by using the established sub-card level channel. The backup device determines the corresponding daughter card according to the address information carried in the information synchronization data message, thereby completing the information synchronization operation, solving the problem that the main control unit is heavily loaded, and the method is not subject to the performance bottleneck of the main control unit. Restrictions provide a reliable guarantee for active/standby switching. Embodiment 2 The difference between the embodiment and the embodiment 1 is that: the synchronization channel in the embodiment 1 includes a device-level channel and a sub-card-level channel, and the synchronization channel in this embodiment includes a device-level channel and a backup group-level channel; The device and the backup device establish the backup group level channel by using the information synchronization control message; correspondingly, the embodiment uses the backup group level channel to transmit the information synchronization data message; for example, after the active device encapsulates the user information into the information synchronization data message, The backup group level channel is sent to the standby device; based on this, the channel encapsulation information includes the address and port number of the backup group level channel. When the backup group-level channel is established, the information synchronization control message carries the address of the backup group-level channel, the port number, and the backup group information of the information synchronization data message sent through the channel. The backup group information includes the backup group number and the correspondence between the backup group and the port. Preferably, the address of the backup group level channel is the same as the address of the device level channel, and the device level channel and the backup group level channel are distinguished by the port number. When the user information on the backup device is lost, the method further includes: the standby device sends an information synchronization control message to the primary device through the device-level channel, and notifies the batch synchronization operation; after receiving the information synchronization control message, the primary device passes the The backup group-level channel sends the locally stored user information to the standby device. After receiving the user information, the standby device sends the information to the corresponding daughter card for processing. When the user equipment of the embodiment needs to be synchronized, the child card can directly send the information synchronization data message to the standby device by using the established backup group level channel, and the backup device determines the corresponding information according to the address information carried by the information synchronization data message. The daughter card completes the information synchronization operation, solves the problem that the main control unit has a large load, and the method is not limited by the performance bottleneck of the main control unit, and provides a reliable guarantee for the active/standby switchover. Embodiment 3 This embodiment provides a method for synchronizing information between primary and backup devices. The method is described by taking the BRAS dual-system hot backup networking structure shown in FIG. 2 as an example to better explain the operation process of information synchronization. Referring to FIG. 4, the following modules are respectively disposed on the primary backup device of the embodiment: a device management module 42 is responsible for maintaining information maintenance between two active and standby BRASs, for example, establishing a synchronization channel; and the information synchronization module 44 is responsible for The user information synchronization sending and receiving process is performed between the active and standby BRAS devices; the backup group management module 46 is responsible for maintenance of the backup group unit, such as active/standby selection, abnormality detection, and information channel between the backup groups; the data forwarding module 48 is responsible for data. Forwarding of messages, and sending of local information. The device management module 42 and the information synchronization module 44 may be disposed on the main control unit. The backup group management module 46 and the data forwarding module 48 may be disposed on each service subcard. As shown in FIG. 4, the device management module 42 is connected to the backup group management module 46; the information synchronization module 44 is connected to the backup group management module 46 and the data forwarding module 48; the backup group management module 46 and the device management module 42, the information synchronization module 44, and The data forwarding module 48 is connected; the data forwarding module 48 is connected to the backup group management module 46 and the information synchronization module 44. Referring to FIG. 5, the information synchronization method between the primary and backup devices includes the following steps: Step S502: The device management module of the primary device negotiates with the remote end according to the configured remote address and port to establish device-level synchronization of signaling and information. aisle. Wherein, the remote end refers to the standby device; in step S504, the device management module of the primary standby device allocates a communication port for each service daughter card of the device; Step S506, the backup group management module of the primary device is configured according to the port managed by the backup group. Select the sync channel to use, which includes: device level sync channel and daughter card level sync channel. The device-level synchronization channel uses the device-level port, and the daughter-card-level synchronization channel uses the port allocated by the service daughter card. Step S508, the backup group management module of the primary standby device invokes the interface of the device management module, and sends the backup group ID (identification) and the selected local port to the remote end through the device-level synchronization channel. After the two-way interaction is completed, the service sub-card resides. The local address, port, and remote address, and the port establish a sub-card level synchronization channel. Step S510, the backup group management module of the primary backup device sends the corresponding relationship between the address/port of the synchronization channel and the processing unit to the data forwarding module. The processing unit refers to the main control unit or service corresponding to the synchronization channel selected in step S506. Child card. In step S512, when the user information needs to be synchronized, the information synchronization module of the active device queries the backup group management module for the used synchronization channel according to the backup group where the user is located, and encapsulates the local/remote address and port according to the result of the query. Send the encapsulated synchronization information to the remote end. Step S514: When the data forwarding module on the standby device receives the remote synchronization message, according to the address/port information, the query sends the synchronization information directly to the corresponding master control according to the corresponding relationship sent in step S510. At the control level of the service daughter card, the information synchronization module receives the information and performs corresponding processing. The data forwarding module belongs to the forwarding layer and does not occupy CPU resources. The information synchronization between the two devices is generally divided into real-time synchronization and batch synchronization. When a new user goes online, when the user is offline, or when the user information is changed, the user information can be synchronized to the backup device by using the real-time synchronization mode. When the sub-card level synchronization channel is used, the synchronization information can be transmitted. When the backup group/device level abnormality causes the backup information to be lost, the user information is completely synchronized again by means of batch synchronization. At this time, the device level synchronization channel can be used for the synchronization information transmission. The device specifies the address of the backup device to establish a reachable route and carries the user information synchronization protocol. In this embodiment, a distributed information synchronization channel negotiation/processing mechanism is introduced. When only a single physical path is required between the primary and backup devices, the centralized processing information of the original control unit is synchronized, and the service sub-card can be freely selected. , or the information synchronization between the service daughter card and the main control unit, effectively reducing the load of the main control unit and the transmission efficiency of the entire system. In the dual-system hot backup mode, the active and backup devices use the synchronization channel to synchronize the service information of all users on the device. The master unit of the standby device receives the user information of the remote device, and then generates the user information locally and sends it to the forwarding layer of the service subcard. When the active/standby switchover is performed, the real-time effect is implemented, and the user's non-aware handover is implemented. Embodiment 4 FIG. 6 is a schematic diagram of networking of primary and backup devices in a step-by-step architecture. In this embodiment, a backup group is used as a granularity, and objects for synchronizing and processing information with each other are agreed. The correspondence between the backup group and the service sub-card is as follows: The backup group 1 protects the service sub-card 1 of the BRAS 1 and the multi-group port of the service sub-card 1 of the BRAS 2; the backup group 2 pairs the service sub-card 2 of the BRAS 1 and the BRAS 2 The plurality of groups of ports of the service subcard 1 are protected; the backup group 3 protects the plurality of groups of ports of the service subcard 2 of the BRAS 1 and the service subcard 2 of the BRAS 2. FIG. 7 is a schematic diagram showing the information synchronization processing of the step-by-step architecture according to the present embodiment, and FIG. 8 is a flowchart showing the information synchronization processing of the step-by-step architecture according to the embodiment, and the information synchronization processing is performed. Including the following steps: Step S802: After device-level negotiation, the BRAS 1 and the BRAS 2 form a device-level synchronization channel with an IP address of 1.1.1.1, a port of 100, an IP address of 1.1.1.2, and a port of 100, and complete device resource synchronization and the like. In step S804, BRAS 1 assigns port 301 to service subcard 1, and service subcard 2 assigns port 302; BRAS2 is service subcard U □ port 401, and service subcard 2 has port 402. Step S806, the backup group management module of the BRAS 1 invokes the device management module interface to negotiate with the remote end. For example, the backup group 1 forms the local 1.1.1.1, the port 301, the remote end 1.1.1.2, the port 401, and the processing unit is the corresponding relationship of the service sub-card 1 and is delivered to the data forwarding module; the BRAS 2 performs the same operation. In step S808, the service sub-card 1 of the BRAS 1 is online, and the service information synchronization module on the sub-card 1 queries the backup group management module with the backup group to which the user belongs, and obtains the processing unit as local (ie, sub-card 1), and encapsulates Source IP 1.1.1.1, port 301, destination IP 1.1.1.2, port 401, find the remote route sent to the physical exit. If the processing unit negotiated by the backup group is the master control unit, the subcard 1 sends the user information to the main control unit, and the main control unit sends the information to the remote end through the device level channel. Step S810, the remote device receives the user synchronization information of the backup group 1, and the data forwarding module searches the local mapping table sent in step S806, and finds that IP1.1.1.2 and port 401 point to the local service subcard 1, and then directly send it to the local service subcard 1. The CPU processing of the service daughter card 1. In this embodiment, a distributed information synchronization channel negotiation/processing mechanism is introduced. When only a single physical path is required between the primary and backup devices, the centralized processing information of the original control unit is synchronized, and the service sub-card can be freely selected. , or the information synchronization between the service daughter card and the main control unit, effectively reducing the load of the main control unit and the transmission efficiency of the entire system. Embodiment 5 This embodiment provides a server, which is a server for a host. Referring to FIG. 9, the server includes: a device management module 92, configured to establish a synchronization channel with a standby server, where the synchronization channel includes a device level channel and a daughter card. Level channel, or, the synchronization channel includes a device level channel and a backup group level channel; The information synchronization module 94 is connected to the device management module 92, and is configured to determine a corresponding sub-card level channel or a backup group level channel according to the backup group where the user is located, according to the address and port number corresponding to the sub-card level channel or the backup group level channel. The user information is encapsulated into an information synchronization data message; the data forwarding module 96 is connected to the information synchronization module 94, and is configured to send the encapsulated information synchronization data message to the standby server through the sub-card level channel or the backup group level channel. The device management module 92 includes: a device-level channel establishing unit, configured to establish a device-level channel by negotiating with the standby server according to the configured address and port of the standby server; and a port allocation unit, configured to be a sub-card or a backup group of the own device. The communication communication unit is connected to the device-level channel establishing unit, and is configured to exchange the correspondence between the backup group identifier and the port through the device-level channel with the standby server; the sub-card level channel establishing unit is set according to the address of the standby server. And the port establishes a sub-card level channel; the backup group-level channel establishing unit is set to establish a backup group-level channel according to the address and port of the standby server. When the synchronization channel includes the device level channel and the daughter card level channel, the device management module 92 may not include the above backup group level channel establishing unit; when the synchronization channel includes the device level channel and the backup group level channel, the device management module 92 may not include the above. Subcard level channel establishment unit. The server can be a broadband remote access server or a service router. Preferably, the server may further include a backup group management module, configured to perform maintenance on the configured backup group, whether the server is abnormal, and select a primary server or a backup server according to the detected result, and between the standby server and the standby server. Synchronous channel maintenance. The information synchronization module 94 determines that user information needs to be synchronized when it is detected that a user is online, offline, or has user information changes. When the server receives the batch synchronization operation notification of the standby device, the server will send the synchronization information to the standby server through the device level synchronization channel. When the primary server of the embodiment needs to synchronize the user information, the daughter card can directly send the information synchronization data message to the standby server by using the established daughter card level channel, thereby completing the information synchronization. The operation solves the problem that the main control unit has a large load, and the method is not limited by the performance bottleneck of the main control unit, and provides a reliable guarantee for the active/standby switchover. Embodiment 6 This embodiment provides a server, which is a standby server. Referring to FIG. 10, the server includes: a device management module 102, configured to establish a synchronization channel with the primary server, where the synchronization channel includes a device level channel and a daughter card. The level channel, or the synchronization channel includes a device level channel and a backup group level channel; the data forwarding module 104 is connected to the device management module 102, and is configured to receive the information synchronization data message sent by the primary server, and then synchronize the data message according to the information. The encapsulated address and port forwards the information synchronization data message to the corresponding daughter card. The information synchronization module 106 is connected to the data forwarding module 104 and configured to process the information synchronization data message on the daughter card. The device management module 102 includes: a device-level channel establishing unit, configured to establish a device-level channel by negotiating an address and a port of the configured primary server with the primary server; and a port allocation unit, configured to be used for each daughter card of the own device or The backup group is assigned a communication port; the information interaction unit is connected to the device-level channel establishing unit, and is configured to exchange the correspondence between the backup group identifier and the port through the device-level channel with the active server; the sub-card level channel establishing unit is set as the master The sub-card level channel is established by using the address and port of the server; the backup group level channel establishing unit is set to establish a backup group level channel according to the address and port of the active server. When the synchronization channel includes the device level channel and the sub-card level channel, the device management module 102 may not include the above-mentioned backup group level channel establishing unit; when the synchronization channel includes the device level channel and the backup group level channel, the device management module 102 may not include the above. Subcard level channel establishment unit. The server can be a broadband remote access server or a service router. When the backup information on the server is lost, the server may notify the primary server to perform a batch synchronization operation through the device-level channel. After receiving the batch synchronization operation notification, the primary server sends the locally stored user information to the device-level channel. The server; after receiving the user information, the server performs a synchronization operation. After receiving the information synchronization data message, the server in this embodiment determines the corresponding sub-card according to the address information carried in the information synchronization data message, thereby completing the information synchronization operation, and solving the problem that the main control unit of the main server has a large load. And this method is not limited by the performance bottleneck of the main control unit, and provides a reliable guarantee for the active/standby switchover. As can be seen from the above description, the present invention achieves the following technical effects: When the user equipment of the above embodiment needs to synchronize the user information, the child card can directly send the information synchronization data message to the used sub-card level channel. The standby device determines the corresponding daughter card according to the address information carried in the information synchronization data message, thereby completing the information synchronization operation, and solving the problem that the main control unit has a large load, and the method is not limited by the performance bottleneck of the main control unit. , providing reliable protection for active and standby switching. Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the scope of the present invention are intended to be included within the scope of the present invention.

Claims

Claims A method for synchronizing information between primary and backup devices, including:

The master device and the backup device establish a synchronization channel, where the synchronization channel includes a device level channel and a daughter card level channel, where the device level channel transmits an information synchronization control message, and the child card level channel transmits an information synchronization data message, The primary device and the standby device establish the subcard level channel by using the information synchronization control message;

The active device encapsulates user information into the information synchronization data message and sends the information to the standby device through the daughter card level channel;

The standby device forwards the information synchronization data message to the corresponding sub-card according to the received channel encapsulation information in the information synchronization data message, and the sub-card processes the information synchronization data message. The method according to claim 1, wherein the channel encapsulation information includes an address and a port number of the sub-card level channel. The method according to claim 1, wherein, in the establishing the sub-card level channel, the information synchronization control message carries an address, a port number of the sub-card level channel, and the information synchronization data message is sent through the channel Backup group information. The method according to claim 3, wherein the backup group information includes a backup group number, a correspondence between the backup group and the port. The method according to claim 2, wherein the address of the sub-card level channel is the same as the address of the device-level channel, and the device-level channel and the sub-card level channel are distinguished by a port number. The method according to claim 1, wherein the triggering the primary device to send the information synchronization data message comprises at least one of the following:

The user goes online;

User offline

User information has changed.

The method according to claim 1, wherein, when the user information on the backup device is lost, the method further includes:

Sending, by the device-level channel, the information synchronization control message to the active device, and notifying the batch synchronization operation;

After receiving the information synchronization control message, the primary device sends the locally stored user information to the standby device through the daughter card level channel;

After receiving the user information, the standby device sends the message to the corresponding daughter card for processing.

8. A method for synchronizing information between primary and backup devices, including:

The active device and the standby device establish a synchronization channel, where the synchronization channel includes a device-level channel and a backup group-level channel, where the device-level channel transmits an information synchronization control message, and the backup group-level channel transmits an information synchronization data message, where the primary device Establishing, by the device and the standby device, the backup group level channel by using an information synchronization control message;

The primary device encapsulates user information into the information synchronization data message through the backup group level channel and sends the information to the standby device.

The standby device forwards the information synchronization data message to the corresponding sub-card according to the received channel encapsulation information in the information synchronization data message, and the sub-card processes the information synchronization data message.

9. The method according to claim 8, wherein the channel encapsulation information comprises an address and a port number of a backup group level channel.

The method according to claim 8, wherein, when the backup group level channel is established, the information synchronization control message carries an address, a port number of the backup group level channel, and sends the information synchronization data through the channel. Backup group information for the message.

The method according to claim 10, wherein the backup group information includes a backup group number, a correspondence between a backup group and a port.

12. The method of claim 9, wherein the address of the backup group level channel is the same as the address of the device level channel, and the device level channel and the backup group level channel are distinguished by a port number.

13. The method according to claim 8, wherein triggering the primary device to send the information synchronization data message comprises at least one of the following:

The user goes online;

User offline

User information has changed.

The method according to claim 8, wherein, when the user information on the backup device is lost, the method further includes:

After receiving the information synchronization control message, the primary device sends the locally stored user information to the standby device through the backup group level channel;

15. A server, the server being a primary server, comprising:

The device management module is configured to establish a synchronization channel with the standby server, where the synchronization channel includes a device level channel and a sub-card level channel, or the synchronization channel includes a device level channel and a backup group level channel; and the information synchronization module is set to be based on the user. The backup group, the corresponding sub-card level channel or the backup group level channel, and the user information is encapsulated into an information synchronization data message according to the address and port number corresponding to the sub-card level channel or the backup group level channel;

And a data forwarding module, configured to send the encapsulated information synchronization data message to the standby server by using the sub-card level channel or the backup group level channel.

The server according to claim 15, wherein the device management module comprises:

a device-level channel establishing unit, configured to establish a device-level channel by negotiating with the standby server according to the configured address and port of the standby server;

a port allocation unit, configured to allocate a communication port to each of the sub-cards or the backup group of the device; the information interaction unit is configured to exchange the correspondence between the backup group identifier and the port through the device-level channel with the standby server;

a sub-card level channel establishing unit, configured to establish a sub-card level channel according to the address and port of the standby server; The backup group level channel establishing unit is configured to establish a backup group level channel at the address and port of the standby server.

17. The server according to claim 15, wherein the server is a broadband remote access server or a service router.

18. A server, the server being an alternate server, comprising:

The device management module is configured to establish a synchronization channel with the primary server, where the synchronization channel includes a device level channel and a sub-card level channel, or the synchronization channel includes a device level channel and a backup group level channel; and the data forwarding module is configured to receive The information synchronization data message sent by the primary server forwards the information synchronization data message to the corresponding daughter card according to the encapsulated address and port of the information synchronization data message;

An information synchronization module is configured to process the information synchronization data message on the child card.

The server according to claim 18, wherein the device management module comprises:

a device-level channel establishing unit, configured to establish a device-level channel by negotiating with the primary server according to the configured address and port of the primary server;

a port allocation unit, configured to allocate a communication port to each of the sub-cards or the backup group of the device; the information interaction unit is configured to exchange the correspondence between the backup group identifier and the port through the device-level channel with the active server;

a sub-card level channel establishing unit, configured to: establish a sub-card level channel according to an address and a port of the main server; a backup group level channel establishing unit, configured to establish an address and a port of the main server Back up the group level channel.

20. The server of claim 18, wherein the server is a broadband remote access server or a service router.