WO2012048574A1 - Method and system for realizing router full protection - Google Patents

Abstract

The present invention discloses a method for realizing router full protection, which includes: a primary router and a standby router are configured, and relevant data of running service is saved respectively on the primary router and the standby router; when in need of switch, data synchronization is performed between the primary and standby routers, and the service on the primary router is switched to the standby router for running. The present invention also provides a system for realizing router full protection. According to the technical solution of the present invention, service can be switched smoothly to the standby router for running.

Description

 Method and system for realizing full protection of routers

 The present invention relates to the field of data communications, and in particular, to a method and system for implementing full protection of a router. Background technique

 With the development of telecom and Ethernet services, the requirements for backup and protection of routers and Ethernet switches are becoming higher and higher, so various protection technologies have sprung up. From the protocol to the interface in the protocol, from the single protocol to the combination of multiple protocols, from a single link to multiple links, the types of protection are more and more, and the degree of protection is more and more detailed, resulting in various The cooperation between protections is becoming more and more complicated. In addition, each kind of protection itself requires each service to have the ability to handle protection-related handover, detection, and configuration. When there are more types of protection, the more business-related processing will be, thus greatly increasing the logic of the service itself. Complexity, which affects the efficiency of business operations.

 It is worth mentioning that although there are more and more router protections, each time the program version upgrade of the router must be carried out according to the characteristics of the service or protection, the problem that must be solved is how to complete the smooth handover of the service. The program version is upgraded. In the prior art, in most cases, the service must be interrupted to complete the upgrade of the program version. In addition, when there are many routers that need to be upgraded or the configuration is very complicated, the manual or semi-automatic upgrade method will make the upgrade work very large. Summary of the invention

In view of this, the main purpose of the present invention is to provide a method and system for implementing full protection of a router, so as to ensure that the service can be smoothly switched to the backup router. In order to achieve the above object, the technical solution of the present invention is achieved as follows:

 The present invention provides a method for implementing full protection of a router, configuring a primary router and a backup router, including:

 The primary router and the backup router respectively save related data for running the service;

 When a switchover is required, the primary and backup routers perform data synchronization and switch the services of the primary router to the backup router.

 In the above method, the method further includes:

 When the switchback is required, the active and standby routers perform data synchronization and switch the services of the backup router to the primary router.

 In the above method, the configuring the primary router and the backup router are:

 One of the two identical routers is designated as the primary router, and the other is the backup router. The primary and secondary routers use a dedicated connection port for communication. The service interface of the primary router is configured to be enabled, and the service interface of the backup router is backed up. Configured to be in the blocking state, the backup router sends a backup router advertisement packet to the primary router periodically through a dedicated connection port.

 In the above method, the primary router and the backup router respectively save related data of the running service as:

 Set a data list for storing related data of all running services running on the router. The database of the primary router saves the data list, and after receiving the backup router advertisement message sent by the backup router for the first time, the database synchronization message will be The data list is sent to the backup router. After the database synchronization timer expires, the primary router sends the data list to the backup router for backup.

In the above method, when the switching needs to be performed, the data synchronization between the active and standby routers is: When receiving the keepalive timer timeout message of the primary router, the backup router determines that the primary router is not working properly, needs to perform handover, and the backup router sends a handover request. The message is sent to the main router, and the latest data list is obtained from the main router to update its own data list. In the foregoing method, when the switching needs to be performed, the data is synchronized between the active and standby routers: According to the configuration requirements, the primary router initiates a handover to the backup router, blocks all service interfaces, and sends the latest data list and the switching request. The message is sent to the backup router; after receiving the handover request message, the backup router performs an update of its own data list, and determines that the handover needs to be performed according to the handover request message.

 In the above method, when the switchback needs to be performed, the data is synchronized between the active and standby routers: When the service is running on the backup router, if the backup router starts to receive the primary router advertisement message sent by the primary router, the backup router determines the master. The router resumes normal operation and needs to be switched back. The backup router sends the latest data list and switch request message to the primary router, and the primary router updates its own data list.

 In the above method, when the switchback needs to be performed, the data is synchronized between the active and standby routers: When the service is running on the backup router, the backup router determines that the service needs to be switched back according to the configuration requirements; when the backup router determines that the service needs to be performed During the failback, the backup router sends the handover request message and the latest data list to the primary router; after receiving the handover request message text and the data list, the primary router determines that the handover needs to be performed, and updates its own data list.

 The present invention also provides a system for implementing full protection of a router, including: a configuration module, a main router, a backup router, and a switching module;

 a configuration module, configured to configure a primary router and a backup router;

 The main router is used to save related data of the running service; when the handover is needed, the data is synchronized with the backup router;

 The backup router is used to save related data of the running service; when the handover is needed, the data is synchronized with the primary router;

 The switching module is used to switch the service of the primary router to the backup router when the handover is needed.

In the above system, The primary router is further configured to perform data synchronization with the backup router when the switchback is required; the backup router is further configured to perform data synchronization with the primary router when the switchback needs to be performed; the switching module is further configured to: When the switchback is required, the backup router's service is switched to the primary router.

 The method and system for implementing full protection of a router provided by the present invention configure a primary router and a backup router, and the primary router and the backup router respectively store related data of the running service; when the handover is required, the primary and secondary routers perform data synchronization, and the primary router is configured. The service is switched to the backup router to implement a complete backup of related data during the running of the service, so that when the service needs to be switched to the backup router, smooth switching can be performed without interrupting the operation of the service; further, related data Saving only needs to use a common data list, so that the storage and backup of related data of the business is simple and efficient. In addition, since the active and standby routers can synchronize the data periodically, there is no need to manually or semi-automatically switch between the switches. Configure the related data of the services of the active and standby routers, which improves the switching efficiency and greatly reduces the workload of switching. DRAWINGS

 1 is a schematic flow chart of a method for implementing full protection of a router according to the present invention;

 2 is a schematic diagram of a network topology structure of an active and standby router in the present invention;

 FIG. 3 is a schematic structural diagram of a system for implementing full protection of a router according to the present invention. detailed description

 The basic idea of the present invention is to: configure a primary router and a backup router, and the primary router and the backup router respectively store related data of the running service; when the handover is required, the primary and secondary routers perform data synchronization, and switch the service of the primary router to the backup router. .

 The invention will be further described in detail below with reference to the drawings and specific embodiments.

The present invention provides a method and system for implementing full protection of a router, and FIG. 1 is an implementation of the present invention. A schematic flowchart of a method for fully protecting a router, as shown in FIG. 1, the method includes the following steps: Step 101: Configure a primary router and a backup router;

 Specifically, FIG. 2 is a schematic diagram of a network topology structure of the active and standby routers in the present invention. As shown in FIG. 2, one of the two identical routers is arbitrarily designated as the primary router, and the other is the backup router. The two routers are essentially mutually active and standby routers; where, the same is the same as the service that needs to be switched when running on two routers, the same output can be obtained for the same input, and the active and standby routers are connected to the upstream network and the downstream network. The topology of the topology should be the same; in this embodiment, all communication processes between the active and standby routers need to be performed through a dedicated connection port between the primary and secondary routers. The dedicated connection interface can be a Layer 2 switching interface or Layer 3 IP interface, etc.

 The service interface between the primary router and the upstream network and the downstream network is configured to be enabled. The service interface between the backup router and the upstream network and the downstream network is configured to be blocked. Therefore, services can only run on the primary router. The backup router cannot. The packet sent by the service cannot receive the packet of the service. The backup router sends a backup router advertisement packet to the primary router through a dedicated connection port to notify the primary router that there is a backup router.

 The primary router periodically sends a notification message to the backup router to notify the backup router of the primary router. Specifically, the primary router advertises the timer for timing. After the primary router announces that the timer expires, the primary router advertises the timer. The timeout message triggers the primary router to send the primary router advertisement message to the backup router.

Step 102: The primary router and the backup router respectively save related data of the running service. Specifically, a public data list is set, and the data list is used to save related data of all running services running on the router, and the related data is an active/standby router. The data to be used for switching, including the configuration information, interface information, and routing information of the active and standby routers. The database of the primary router saves the data list and passes the database after receiving the backup router advertisement message sent by the backup router for the first time. The synchronization message sends the data list to the backup router. And start its own database synchronization timer; each time the database synchronization timer expires, the database synchronization timer sends a synchronization timer timeout message to the primary router, triggering the primary router to send the data list to the backup router; the duration of the database synchronization timer It can be set according to the business requirements. If the related data of the running service is updated faster, the duration can be set shorter. If the related data of the running service is updated slowly, the duration can be set longer.

 After receiving the data list, the backup router performs configuration and generates related data of the same service according to the related data of the service, and saves related data of the service in its own database, and implements a data list of related data of the service. Backup, and data synchronization between the backup router and the primary router.

 Step 103: When the handover is required, the active and standby routers perform data synchronization, and switch the service of the primary router to the backup router.

 Specifically, a primary router keepalive timer is configured. After the timer expires, a timer timeout message is sent to the backup router. After receiving the timer timeout message, the backup router determines that the primary router keeps a timer timer. The primary router advertisement packet sent by the primary router is not received, so that the primary router cannot work normally, and the handover needs to be performed; the backup router refreshes the primary router keep-alive timer every time the primary router advertisement packet is received;

 Since the service running on the original primary router cannot operate normally, when the backup router determines that the handover needs to be performed, the backup router sends a handover request message to the primary router, and after receiving the handover request message sent by the backup router, the primary router will update the latest data. The list is sent to the backup router and blocks its own service interface. After receiving the latest data list, the backup router updates its own data list and opens its blocked service interface. All services originally running on the primary router. Will automatically switch to running on the backup router;

Or, according to the configuration requirements, the primary router can initiate a handover to the backup router. When the handover needs to be performed, the primary router first blocks all service interfaces, and then sends the latest data list and handover request message to the backup router; receives the handover request message. After the backup router first First, the data list is updated, and the switch request message is determined to be switched, and the service interface that has been blocked is automatically enabled. All services originally running on the primary router are automatically switched to the backup router. On the primary router, configure the condition that the primary router initiates the switchover to the backup router. The condition may be that the service reaches the set time on the primary router, or the primary router needs to upgrade the program after the upgrade period expires. Although the main router can work normally, it cannot continue to run the service due to the configuration requirements. Therefore, it is necessary to switch the service to the backup router to run.

 When the service runs on the backup router, the backup router starts its own database synchronization timer. After each database synchronization timer expires, the database synchronization timer sends a synchronization timer timeout message to the backup router, triggering the backup router to send the data list. After receiving the data list, the main router performs configuration and generates the same service configuration information according to the service configuration information therein, and saves the service configuration information in its own database to implement the data list of the service configuration information. Backup, and periodic data synchronization between the primary router and the backup router, in order to switch back the service to the primary router.

 Step 104: When the switchback is required, the active and standby routers perform data synchronization, and switch the service of the backup router to the primary router.

Specifically, when the service is running on the backup router, if the backup router starts to receive the primary router advertisement message sent by the primary router, the backup router determines that the primary router resumes normal operation, and needs to perform failback; the backup router will list the latest data. And the switching request message is sent to the primary router, and the service interface that has been opened is blocked; after the primary router receives the handover request message sent by the backup router, the primary router updates its own data list, and starts the service interface that has been blocked by itself, in the backup router. The running service will automatically switch to the primary router to run; or, if the primary router initiates a switch to the backup router when the switchover is performed, when the service runs on the backup router, the backup router determines according to the configuration requirements. The service needs to be switched back; when the switchback is required, the backup router blocks all service interfaces first. Then, the switch request message and the latest data list are sent to the main router; after receiving the switch request message text and the data list, the main router determines that the switch needs to be performed, updates its own data list, and turns on the service interface that has been blocked. The service originally running on the backup router is automatically switched to the primary router. The backup router can be configured to initiate the switch to the primary router on the backup router. The condition can be that the service reaches the set time on the backup router. The time, or the backup router needs to be upgraded after the upgrade period expires. When the condition is met, although the backup router can work normally, the service cannot be continued because of the configuration requirements. Therefore, the service needs to be switched back to the primary router. .

 The invention can better support the automatic upgrade of the program of the router. For example, when the running main router receives the request for program upgrade, it sends a handover request message to the backup router, and then the working state of the main router becomes the switching state; When the router receives the handover request message sent by the primary router, the router automatically switches the service. After the service is switched, the backup router sends a handover completion message to the primary router, and then the backup router becomes operational. The primary router receives the backup router. After the handover completion message is sent, the upgrade process of its own program is performed, and then its working status becomes the upgrade state. After the upgrade of the primary router is completed, a message requesting the backup router to be upgraded may be sent, or no message may be sent, whether to send or not. The message can be configured according to requirements. Among them, the active and standby routers have a program upgrade module, and the program upgrade module can maintain the above working state and the message when processing the interaction.

 To achieve the above method, the present invention also provides a system for implementing full protection of a router. FIG. 3 is a schematic structural diagram of a system for implementing full protection of a router according to the present invention. As shown in FIG. 3, the system includes: a configuration module 31 and a main router 32. The backup router 33, the switching module 34; wherein, the configuration module 31 is configured to configure the main router 32 and the backup router 33;

 The main router 32 is configured to save related data of the running service; when the handover is required, the data is synchronized with the backup router 33;

The backup router 33 is configured to save related data of the running service; when switching is required, The main router 32 performs data synchronization;

 The switching module 34 is configured to switch the service of the primary router 32 to the backup router 33 when the handover is required.

 The primary router 32 is further configured to perform data synchronization with the backup router 33 when the switchback needs to be performed;

 The backup router 33 is further configured to perform data synchronization with the main router 32 when the switchback needs to be performed;

 The switching module 34 is further configured to switch the service of the backup router 33 to the main router 32 when the switchback needs to be performed.

 The configuration primary router 32 and backup router 33 are:

 One of the two identical routers is designated as the primary router 32, and the other is the backup router 33. The primary and secondary routers use a dedicated connection port for communication; the service interface of the primary router 32 is configured to be on, and the backup router is configured. The service interface of 33 is configured to be in a blocked state; the backup router 33 sends a backup router advertisement message to the primary router for 32 cycles through a dedicated connection port.

 The main router 32 and the backup router 33 respectively save related data of the running service as: setting a data list for storing relevant data of all running services running on the router, and the database of the main router 32 saves the data list, and for the first time After receiving the backup router advertisement message sent by the backup router 33, the data list is sent to the backup router 33 through the database synchronization message. After the database synchronization timer expires, the main router 32 sends the data list to the backup router 33. Backup.

 When the switch needs to be switched, the data synchronization between the active and standby routers is as follows:

 When receiving the primary router keepalive timer timeout message, the backup router 33 determines that the primary router 32 is not functioning properly, needs to perform handover, and the backup router 33 sends a handover request message to the primary router 32, and obtains the latest data list from the primary router 32. , to update the own data list.

When the switch needs to be switched, the data synchronization between the active and standby routers is as follows: According to the configuration requirements, the main router 32 actively initiates a handover to the backup router 33, blocks all its own service interfaces, and sends the latest data list and handover request message to the backup router 33; after receiving the handover request message, the backup router 33 performs The update of its own data list, and determines that a handover is required according to the handover request message.

 When the switchback needs to be performed, the data synchronization between the active and standby routers is as follows:

 When the service is running on the backup router 33, if the backup router 33 starts to receive the primary router advertisement message sent by the primary router 32, the backup router 33 determines that the primary router 32 is back to normal operation, and needs to perform failback; the backup router 33 will be up to date. The data list and handover request message are sent to the primary router 32, which updates its own data list.

 When the switchback needs to be performed, the data synchronization between the active and standby routers is as follows:

 When the service is running on the backup router, the backup router 33 determines that the service needs to be switched back according to the configuration requirements; when the backup router 33 determines that the switchback needs to be performed, the backup router 33 sends the handover request message and the latest data list to the master. After receiving the handover request message text and the data list, the router 32 determines that the handover needs to be performed and updates the data list of itself.

 The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included. Within the scope of protection of the present invention.

Claims

Claim  A method for implementing full protection of a router, characterized in that: configuring a primary router and a backup router, the method further includes:  The primary router and the backup router respectively save related data for running the service;  When a switchover is required, the primary and backup routers perform data synchronization and switch the services of the primary router to the backup router.  2. The method according to claim 1, wherein the method further comprises: when the switchback is required, the active and standby routers perform data synchronization, and switch the service of the backup router to the primary router.  3. The method according to claim 1, wherein the configuring the primary router and the backup router are:  One of the two identical routers is designated as the primary router, and the other is the backup router. The primary and secondary routers use a dedicated connection port for communication. The service interface of the primary router is configured to be enabled, and the service interface of the backup router is backed up. Configured to be in the blocking state, the backup router sends a backup router advertisement packet to the primary router periodically through a dedicated connection port.  The method according to claim 1, wherein the primary router and the backup router respectively save related data of the running service as:  Set a data list for storing related data of all running services running on the router. The database of the primary router saves the data list, and after receiving the backup router advertisement message sent by the backup router for the first time, the database synchronization message will be The data list is sent to the backup router. After the database synchronization timer expires, the primary router sends the data list to the backup router for backup.  The method according to claim 1, wherein when the switching needs to be performed, the data synchronization between the active and standby routers is: When receiving the primary router keepalive timer timeout message, the backup router determines that the primary router does not It works normally and needs to be switched. The backup router sends a handover request message to the primary router, and obtains the latest data list from the primary router to update its own data list.  The method according to claim 1, wherein when the switching needs to be performed, the data synchronization between the active and standby routers is:  According to the configuration requirements, the primary router initiates a switch to the backup router, blocks all its service interfaces, and sends the latest data list and switch request message to the backup router. After receiving the switch request message, the backup router performs its own data list. Update, and determine that a switch needs to be made based on the switch request message.  The method according to claim 2, wherein when the back-cutting needs to be performed, the data synchronization between the active and standby routers is:  When the service runs on the backup router, if the backup router starts to receive the primary router advertisement message sent by the primary router, the backup router determines that the primary router resumes normal operation and needs to perform failback; the backup router will update the latest data list and handover request. The message is sent to the primary router, which updates its own data list.  The method according to claim 2, wherein when the back-cutting is required, the data synchronization between the active and standby routers is:  When the service is running on the backup router, the backup router determines that the service needs to be switched back according to the configuration requirements; when the backup router determines that the switchback needs to be performed, the backup router sends the handover request message and the latest data list to the primary router; After switching the request message text and the data list, the main router determines that it needs to perform the handover and updates its own data list.  A system for implementing full protection of a router, the system comprising: a configuration module, a main router, a backup router, and a switching module;  a configuration module, configured to configure a primary router and a backup router; The main router is used to save related data of the running service; when the handover is needed, the data is synchronized with the backup router; The backup router is configured to save related data of the running service; when the handover is required, data synchronization with the primary router is performed;  The switching module is used to switch the service of the primary router to the backup router when the handover is needed.  10. The system of claim 9 wherein:  The primary router is further configured to perform data synchronization with the backup router when the switchback is required; the backup router is further configured to perform data synchronization with the primary router when the switchback needs to be performed; the switching module is further configured to: When the switchback is required, the backup router's service is switched to the primary router.