WO2008101430A1

WO2008101430A1 - A method for active/standby switching and a system thereof

Info

Publication number: WO2008101430A1
Application number: PCT/CN2008/070265
Authority: WO
Inventors: Shengqiang Yang
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2007-02-16
Filing date: 2008-02-03
Publication date: 2008-08-28
Also published as: CN101247213A

Abstract

A method for active/standby switching includes: the switching between the active first unit and the standby second unit is caused, and a switching message is sent to the service unit which relates to the first unit for the service, so the service connection is established between the service unit and the second unit; when the second unit becomes to the active unit after switching, the service in the first unit will be switched to the second unit. A system for active/standby switching includes: the first unit and the second unit are backup for each other; after the first unit and the standby second unit are switched, the first unit switches the service in the first unit to the second unit; the first unit notifies the service unit which relates to the first unit for the service to establish the service connection to the second unit. By using the invention, it is avoided that the service unit which relates to the active unit for the service performs the time-consuming detection of the disconnection after the switching of the active unit and the standby unit has been finished. Therefore the service interrupting time caused by the active/standby switching could be reduced effectively.

Description

Method and system for active/standby switching of the present invention. This application claims priority to Chinese patent application filed on February 16, 2007, the Chinese Patent Office, Application No. 200710079397.8, entitled "A Method and System for Active/Standby Switching" The entire contents of which are incorporated herein by reference. The present invention relates to the field of communications technologies, and in particular, to a method and system for active/standby switching. Background technique

With the rapid development of telecommunication technology, many telecommunication systems need to continuously upgrade telecommunication systems or telecommunication equipments in order to expand functions and add new services, and telecommunication equipment may find problems during operation, and when solving problems, it is necessary to The device is upgraded and replaced. However, the reliability requirements of telecommunication equipment are relatively high. The general telecommunication equipment requires 99.999% reliability, which means that only about 5 minutes of interruption time is allowed per year. How to reduce the service interruption time during equipment upgrade or failure, has always been a telecommunication equipment. What manufacturers and operators are very concerned about. At present, the active/standby switchover between the two units with active/standby redundancy is used to improve the reliability. When the primary unit fails or the primary unit fails, the active/standby switchover mechanism automatically switches the service to the standby unit. The system's business interruption time is as short as possible.

In the prior art, two boards with active/standby redundancy are switched. To ensure the reliability of the telecommunication equipment during use, the system control center implements the redundancy design of the active and standby boards. Under normal conditions, the main use The board is responsible for completing various services and saving the critical status information to the standby board through the backup communication link between the active and standby boards. When the active board is faulty or the version is upgraded, the board can be switched. When the main board is reset, the standby board is upgraded to the new main board, and the original main board is replaced. The service board that has service contact with the original main board checks that the communication with the original main board is interrupted. Initiating the process of establishing a communication link. When all the service boards that have service association with the original active board establish a communication link with the new active board, the system can work normally.

However, when the active/standby board is switched, the board that has service contact with the original active board takes time to detect the communication interruption process with the original active board. Some normal delay jitters are misinterpreted as broken links, resulting in frequent system broken chain reconstruction, which in turn leads to system instability. Summary of the invention

The embodiment of the invention provides a method and a system for the active/standby switchover, which can improve the efficiency of the active/standby switchover and shorten the time for the service interruption during the active/standby switchover.

An active/standby switchover method provided by the embodiment of the present invention includes:

Triggering the first unit of the primary unit and the alternate second unit for switching,

Transmitting a switching message to a service unit having a service contact with the first unit, so that the service unit establishes a service connection with the second unit;

After the second unit is switched to become the primary unit, the traffic on the first unit is switched to the second unit.

An embodiment of the present invention provides a system for master/slave switching, including: a first unit and a second unit that are mutually backed up,

After the first unit is switched with the spare second unit, the first unit switches the service on the first unit to the second unit;

The first unit notifies a service unit having a service connection with the first unit to establish a service connection with the second unit unit.

More suitably, it also includes:

a forwarding unit, configured to receive and forward a switching message sent by the second unit, and notify the second unit to perform a service connection when receiving the service connection request message;

And a service unit, configured to receive a message sent by the forwarding unit, establish a service connection with the second unit, and send a response message to the second unit.

Another active/standby switching system provided by the embodiment of the present invention includes a first unit and a second unit that are mutually backed up, and a service processing unit;

The first unit is configured to switch the service to the second unit when the second unit is switched.

a second unit, configured to send a switching message to the service processing unit after switching to a new primary unit;

The service processing unit, the switching message sent by the second unit for the new primary, switches the service connection with the first unit to the second unit.

In the technical solution provided by the embodiment of the present invention, by using the original primary unit and the original standby unit After the switchover is completed, the service unit that sends a service contact with the original active unit is actively sent, and the service unit that has the service contact with the original active unit establishes a service connection with the new active unit when receiving the message. Or switching the service connection with the original active unit to the new active unit, so that the service unit does not need to perform the broken link detection after the main unit and the standby unit complete the switching, and the broken link detection process is time consuming, and thus effectively shortened In the process of active/standby switching, the time of business interruption. DRAWINGS

FIG. 1 is a flowchart of an active/standby switching method according to an embodiment of the present invention;

2 is a signaling flowchart of Embodiment 1 of the present invention;

3 is a system block diagram of Embodiment 1 of the present invention;

4 is a signaling flowchart of Embodiment 2 of the present invention;

FIG. 5 is a system block diagram of Embodiment 2 of the present invention. detailed description

In the prior art, when the active and standby boards are switched, the board that has service contact with the original active board takes time to detect the communication interruption process with the original active board. The communication link detection time is generally set to the second level. Even if it is more than 10 seconds, if the communication link detection time is set too short, some normal delay jitters will be misjudged as broken links, causing the system to be frequently broken and rebuilt, resulting in system instability. In view of this, the present invention The embodiment provides a method and a system for the active/standby switchover, which can improve the efficiency of the active/standby switchover and shorten the time for the service interruption during the active/standby switchover.

Referring to FIG. 1 , the steps of an active/standby switchover method provided by the implementation of the present invention are as follows:

101: When an active unit and a standby unit having an active/standby redundancy function need to be upgraded, or the primary unit cannot receive data sent by a service unit with which the service unit has a service, triggering between the primary unit and the standby unit Switching

The primary unit and the standby unit may be: two boards with active and standby points, or two devices with active/standby points, or two systems with active and standby points.

Step 102: Switching the service on the primary unit to the standby unit, the primary unit is reset, and the standby unit is upgraded to a new primary unit, replacing the operation of the original primary unit;

And actively sending a switching message to the service unit having the service contact with the original active unit; the switching message is a broadcast message; or The switching message may be a switching notification message when the switching is started, or a switching end message when the switching is completed, and the switching message may carry the address information of the new active unit and the original primary unit address information, and do not carry the address information. By default, the new primary unit address information is equal to the original primary unit address information, or the corresponding business unit has a corresponding configuration on the service unit. Or sending the message separately to the business unit;

103: The service unit having the service association with the original active unit receives the switching message, enters a process of establishing a service connection with the new active unit, and the service unit having a service connection with the original active unit is associated with the original primary unit Switching the service connection to the new active unit or establishing a service connection with the new primary unit;

104: The service unit that has a service connection with the original active unit sends a response message to the new active unit after receiving the connection establishment or the handover success message.

2 is a signaling flowchart of an active/standby switchover according to Embodiment 1 of the present invention, which is described in detail below:

201: Performing a standby main processing between the original active unit and the original standby unit, switching the service of the original primary unit to the original standby unit, and upgrading the original standby unit to the new primary unit;

The primary unit and the standby unit may be: two boards with active and standby points, or two devices with active/standby points, or two systems with active and standby points. For example, the active unit and the standby unit are the active boards and the standby boards that are inserted in the adjacent slots of the same chassis. When the active boards are faulty or need to be upgraded, the active boards and standbys are used. The board is switched between the board and the slot number or the port number. The service is switched to the standby board. The main board is reduced to the new standby board. The service board that is in contact with the original active board is used to establish a service connection with the new active board and the new main bill is used according to the slot number or port number of the new active board. The board sends a switching end response message. When the new active board receives the switching end response message, the new active board and the service board perform service contact.

The original primary unit and the original standby unit may have the same address or different addresses. When the original primary unit and the original standby unit have the same external address, the service unit that has a service connection with the original active unit cannot carry the address information when the service unit cannot perform the service contact with the original active unit. When there is address information, there is a service with the main unit. The corresponding address information has been configured in the contacted service unit, or the address information of the new active unit is equal to the address information of the original active unit by default, and the service unit having the business connection with the original active unit is established according to the address of the original active unit. The business connection of the new primary unit. When the external address of the original primary unit and the original standby unit are different, the service unit having a service connection with the original primary unit establishes a service connection with the new primary unit according to the address of the new primary unit.

The address may be a physical address or a logical address.

202: The new active unit sends a switching message to the forwarding unit, for example, the message is a switching end message;

203: The forwarding unit sends the received switching end message to a service unit that has a service association with the original primary unit.

204: The service unit that has a service connection with the original active unit receives the switching end message, and establishes a service connection with the new active unit.

205: After completing the establishment of the service connection with the new active unit, the service unit having the service association with the original active unit sends a switching end response message to the new active unit.

Referring to FIG. 3, a system block diagram of an active/standby switchover according to Embodiment 1 of the present invention includes: an active unit 301, a standby unit 302, and a forwarding unit 303;

The main unit 301 is configured to switch the service to the standby unit 302 when the main unit 301 fails to receive data, or needs to be upgraded;

The backup unit 302 is configured to, after completing the switching with the main unit 301, upgrade to a new active unit, and actively send a switching message to the forwarding unit 303, for example, the switching message is a switching end message;

The primary unit 301 and the standby unit 302 may be: two boards with active and standby points, or two devices with active and standby points, or two systems with active and standby points. For example, when the main unit 301 and the backup unit 302 are inserted into the main board and the standby board in the same slot of the same chassis, the main board is faulty or needs to be upgraded. Switching between the board and the standby board, identifying the slot number or the port number, and switching the service of the main board to the standby board. The main board is reduced to the new standby board. The board is upgraded to the new main board. The service board that is in contact with the original main board establishes a service connection with the new main board according to the slot number or port number of the new main board. The main board sends the end of the switching After the message is received, the new active board receives the service from the service board.

The forwarding unit 303 is configured to receive and forward the switching message sent by the standby unit 302, and notify the new active unit to perform a service connection when receiving the service connection request message.

The system further includes:

The service unit 304 is configured to receive a message sent by the forwarding unit, establish a service connection with the new active unit, and send a response message to the new active unit.

The forwarding unit 303 may directly forward the received switching message, or may perform processing and then send.

FIG. 4 is a signaling flowchart of an active/standby switchover according to Embodiment 2 of the present invention, which is described in detail below:

401: Performing a standby main processing between the original active unit and the original standby unit, switching the service of the original primary unit to the original standby unit, and upgrading the original standby unit to the new primary unit;

402: The new active unit sends a switching message to the service unit that has a service connection with the original active unit, where the switching message is a switching notification message or a switching end message.

403: The service unit that has a service connection with the original active unit, when receiving the switching notification message, switches the service connection with the original active unit to the new active unit;

404: After completing the handover of the service connection, the service unit sends a switching response message to the new active unit to perform business contact with the new active unit.

The primary unit and the standby unit have different addresses, and the address may be a physical address or a logical address.

5 is a system block diagram of an active/standby switchover according to Embodiment 2 of the present invention, where the system specifically includes: an active unit 501, a standby unit 502, and a service processing unit 505;

The main unit 501 is configured to perform service contact with the service processing unit 505. When the main unit 501 fails to receive data, or needs to be upgraded, the service is switched to the standby unit 502.

The standby unit 502 is configured to be upgraded to the new primary service after completing the service switching with the primary unit 501. a unit, and actively sending a switching message to the service processing unit 505, for example, the switching message is a switching notification message or a switching end message;

The primary unit 501 and the standby unit 502 may be: two boards with active and standby points, or two devices with active and standby points, or two systems with active and standby points.

The switching message described in each embodiment may be a broadcast message, or the message may be separately sent to the service unit.

As shown in the foregoing embodiment, the embodiment of the present invention actively broadcasts a message to a unit that has a service connection with the original active unit after performing service switching between the active unit and the standby unit having the active/standby redundancy function. The unit in which the original active unit has a service connection, when receiving the switching message, switches the service connection with the original active unit to the new active unit, or establishes a service connection with the new active unit. Therefore, each service unit does not need to perform the link detection, and the link detection process is time consuming, thereby effectively shortening the time of service interruption in the process of active/standby switchover.

The service processing unit 505 is configured to switch the service connection with the main unit 301 to the new main unit when receiving the switching end message, and send a switching response message to the new main unit.

The system further includes: a service response unit 506, configured to send a switching response message to the new active unit after receiving a handover success message of the service connection sent by the service processing unit.

The service processing unit 505 and the service response unit 506 can be placed in the service unit 504.

The foregoing detailed description of the method and system for performing an active/standby switchover according to an embodiment of the present invention is only for assisting in understanding the method and core idea of the present invention. Meanwhile, for those skilled in the art, The present invention is not limited by the scope of the present invention.

Claims

Rights request

A method for active/standby switching, characterized in that:

And sending a switching message to the service unit having the service contact with the first unit, so that the service unit establishes a service connection with the second unit.

2. The method according to claim 1, further comprising:

The method according to claim 1 or 2, wherein the sending the switching message to the service unit having the service association with the first unit, specifically includes:

Sending the switching message to the third unit;

The switching end message is forwarded by the third unit to the service unit having service contact with the first unit.

The method according to claim 1 or 2, wherein the switching message is a broadcast message.

The method according to claim 1 or 2, wherein the switching of the primary first unit and the standby second unit is performed in the following cases:

When the primary unit cannot receive data sent by the service unit with which it has a service relationship; or when the primary unit and the standby unit with active/standby redundancy function need to be upgraded.

6. An active/standby switching system, comprising: a first unit and a second unit that are mutually backed up,

7. The system according to claim 6, further comprising:

And a service unit, configured to establish, according to the switching notification of the first unit, a service connection with the second unit, and send a response message to the second unit.

8. The system according to claim 6, further comprising: a forwarding unit, configured to receive and forward a switching message sent by the second unit, and notify the second unit to perform a service connection when receiving the service connection request message;

The system according to claim 6, wherein the first unit and the second unit that are mutually backed up comprise:

Two boards that are backed up each other, two devices that are backed up each other, and two systems that are backed up each other.

10. An active/standby switchover method, comprising:

The first unit triggering the primary unit and the standby second unit are switched, and after the second unit is switched to become the primary unit, the service on the first unit is switched to the second unit;

Transmitting a switching message to a service unit having a service association with the first unit, so that the service unit establishes a service connection with the second unit unit.

The method according to claim 10, wherein the switching message is a broadcast message.

12. The method according to claim 10, wherein the switching of the primary first unit and the standby second unit is performed under the following conditions:

13. An active/standby switching system, comprising: a first unit and a second unit that are mutually backed up, and a service processing unit;

The system according to claim 13, further comprising: a service response unit, configured to: after receiving a handover success message of the service connection sent by the service processing unit, send the message to the second unit of the new primary unit Switch the response message. The system according to claim 14, wherein the first unit and the second unit that are mutually backed up comprise: