WO2017219779A1

WO2017219779A1 - Device active/standby switchover method and apparatus based on link protocol, and storage medium

Info

Publication number: WO2017219779A1
Application number: PCT/CN2017/083832
Authority: WO
Inventors: 张伟
Original assignee: 中兴通讯股份有限公司
Priority date: 2016-06-21
Filing date: 2017-05-10
Publication date: 2017-12-28
Also published as: CN107528706A

Abstract

Embodiments of the present invention provide a device active/standby switchover method and apparatus based on a link protocol, and a storage medium. The method comprises: establishing a key data synchronization mechanism between an active board and a standby board, the key data comprising configuration data and a protocol state; establishing a keepalive packet transception mechanism independent from the active board; and when an active/standby switchover is triggered, maintaining transception processing of the keepalive packet by using the keepalive packet transception mechanism, and switching a working master control board from the active board to the standby board by using the key data synchronization mechanism. By using the solution, in the process of switching from an active board to a standby board on a local end device, the transception processing of a keepalive packet is maintained by means of a keepalive packet transception mechanism independent from the active board, so that the local end device can normally exchange keepalive packets with a peer-end device; and in the process, the peer-end device does not perceive the active/standby change of the local end device, and further, the stability of a link state is maintained, thereby ensuring that a traffic interruption does not occur on the local end device during the active/standby switchover.

Description

Device active/standby switching method and device based on link protocol, storage medium

Cross-reference to related applications

The present application is based on a Chinese patent application filed on Jan. 21, 2016, filed on Jun.

Technical field

The present invention relates to the field of communications, and in particular, to a device active/standby switching method and device based on a link protocol, and a storage medium.

Background technique

Usually, the main control board of the device adds a spare board in addition to the working motherboard to improve the reliability of the device. In the process of switching the mainboard to the standby board, the active/standby redundancy backup is implemented by the Graceful Restart (GR) synchronization technology. Under normal circumstances, the standby board does not work. When the board is abnormal, the working main control board will automatically switch from the current main board to the standby board, and the standby board will take over to work.

After the link protocol is successfully negotiated, the link protocol of the two devices in the connection scenario is configured to exchange the keepalive packets to detect the existence of the connected device. The device keeps the keepalive packets on the main control board. When the main control board is performing the active/standby switchover, the local device cannot send keep-alive packets. If the connected device fails to receive the data within a certain period of time. When the local device is unreachable, the link termination packet will be sent, causing the link protocol to be broken, and traffic interruption occurs.

Summary of the invention

The technical problem to be solved by the embodiment of the present invention is to provide a device-based active/standby switching method and device based on the link protocol, and a storage medium. In the prior art, when the device performs the active/standby switchover, the local device is switched during the switching. The keepalive packet is no longer sent. If the peer device does not receive the keep-alive packet within a certain period of time, the peer device considers that the local device is unreachable and sends a link termination packet, causing the link protocol to be broken. There is a problem with traffic interruption.

To solve the above technical problem, an embodiment of the present invention provides a device active/standby switching method based on a link protocol, including:

Establish a key data synchronization mechanism between the motherboard and the standby board. The key data includes: configuration information and protocol status.

Establish a keep-alive message sending and receiving mechanism separated from the main board;

When the active/standby switchover is triggered, the keepalive packet sending and receiving mechanism is used to maintain the sending and receiving of the keep-alive packets, and the working main control board is switched from the mainboard to the standby board by using the key data synchronization mechanism.

To solve the above technical problem, an embodiment of the present invention provides a device active/standby switching device based on a link protocol, including:

The first establishing module is configured to establish a key data synchronization mechanism between the motherboard and the standby board, and the key data includes: configuration information and protocol status;

The second establishing module is configured to establish a keep-alive packet sending and receiving mechanism separated from the main board;

The first processing module is configured to maintain the sending and receiving process of the keep-alive message by using the keep-alive packet sending and receiving mechanism when the active/standby switching is triggered;

The second processing module is configured to switch the working main control board from the mainboard to the standby board by using a key data synchronization mechanism when the active/standby switchover is triggered.

In order to solve the above technical problem, an embodiment of the present invention further provides a computer storage medium, where the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the link-based device active/standby switching method described above. .

The beneficial effects of the embodiments of the present invention are:

According to the link protocol-based device active/standby switching method and device, and the storage medium provided by the embodiment of the present invention, the key data includes: configuration information, protocol status, and establishment of the motherboard by establishing a key data synchronization mechanism between the motherboard and the standby board. Separate keep-alive packet sending and receiving mechanism; when the active/standby switchover is triggered, the keep-alive packet sending and receiving mechanism is used to maintain the sending and receiving of the keep-alive packet, and the working main control board is switched from the mainboard to the standby board by using the key data synchronization mechanism; In the process of switching the local device to the standby device, the local device can maintain the keep-alive packet transmission and reception process through the keep-alive packet sending and receiving mechanism. During the active/standby switchover process, the peer device does not detect the active/standby switchover of the local device. This ensures that the local device does not experience traffic interruption during the active/standby switchover. problem.

DRAWINGS

FIG. 1 is a flowchart of a method for performing active/standby switching of a device based on a link protocol according to Embodiment 1 of the present invention;

2 is a schematic diagram of synchronizing key data of a motherboard to a standby board according to Embodiment 1 of the present invention;

FIG. 3 is a schematic diagram of successful protocol exchange negotiation according to Embodiment 1 of the present invention; FIG.

4 is a schematic diagram of unsuccessful negotiation of protocol packet exchange according to Embodiment 1 of the present invention;

FIG. 5 is a schematic structural diagram of a device active/standby switching device based on a link protocol according to Embodiment 2 of the present invention.

detailed description

The embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

Embodiment 1

With the development of the data link technology, the link protocol is widely used in the device interconnection scenario. The link protocol includes UDLD (Unidirectional Link Detection) and Link Aggregation Control Protocol (LACP). Control Protocol), PPP (Point To Point Protocol, Point-to-Point Protocol, HDLC (High-Level Data Link Control), etc. The link protocol belongs to the Layer 2 protocol of the Open System Interconnection (OSI) model. During the process of active/standby switchover, the stability of the protocol state is related to the normal delivery of the entire upper-layer service traffic.

Usually, the main control board of the device adds a spare board in addition to the working motherboard to improve the reliability of the device. The device includes a router device, and the main control board is a device board for performing service configuration and main protocol work. During the process of switching the mainboard to the standby board, the active/standby redundancy backup is implemented through the active/standby switch GR synchronization technology. Under normal circumstances, the standby board does not work. When the board is abnormal, the working main control board will automatically switch from the current main board to the standby board, and the standby board will take over to work.

To ensure that the device does not interrupt the traffic during the active/standby switchover, the device provides an active/standby switchover method based on the link protocol. Referring to Figure 1, the following steps are included:

S101: Establish a key data synchronization mechanism between the motherboard and the standby board. The key data includes: configuration information and protocol status.

As shown in Figure 2, the key data synchronization mechanism between the main board and the standby board is as follows: the key data on the main board is synchronized to the standby board through the active/standby switchover database, and the key data in the active/standby switchover database is used to open the standby board. Used at work, avoiding the problem of chain scission caused by re-triggering link establishment.

S102: Establish a keep-alive packet sending and receiving mechanism separated from the main board.

The mechanism for transmitting and receiving the keep-alive message separated from the main board includes: setting a keep-alive processing module separated from the main board, and performing transceiving processing of the keep-alive message through the keep-alive processing module.

The keep-alive processing module is separated from the main board and is independent of the active/standby switch. When the main control board of the device performs the active/standby switchover, the keep-alive processing module can send and receive keep-alive packets without being affected by the active/standby switchover. .

The keep-alive processing module receives the relevant information of the keep-alive message before sending and receiving the keep-alive message. Information, such as the content of the message, the length of the message, the period of sending the message, and so on. The keepalive message is periodically sent by the keepalive processing module of the local device to host the link protocol.

As shown in Figure 3 and Figure 4, before the switchover of the local device to the standby device is performed, the protocol packets of the local device and the peer device are negotiated. After the negotiation succeeds, the device keeps the keepalive message. To sense the presence of a docking device. When the active device is used to switch the motherboard of the local device to the standby device, the UDLD protocol is used as the link. The specific processing is as follows: The host and the peer device of the local device are based on the UDLD. If the negotiation is successful, the keepalive processing module of the local device receives the information about the keep-alive keep-alive packets, such as the packet content, before sending and receiving the keep-alive packets. The length of the packet, the packet sending period, and so on. The UDLD protocol is managed by the keepalive processing module of the local device to periodically exchange the keep-alive packets with the peer device. If the negotiation is unsuccessful, the keepalive processing module of the local device receives the packet. To delete the information of the keep-alive message, the keep-alive processing module deletes the keep-alive message and stops sending the keep-alive message.

As shown in the above, in the process of switching the motherboard of the local device to the standby board, the keep-alive message is delivered to a separate and independent keep-alive processing module for processing, thereby maintaining the stability of the link state. This ensures that the local device does not experience traffic interruption during the active/standby switchover.

The above S101 and S102 may be either one of the preceding or the same in the order of execution. That is, the key data synchronization mechanism between the main board and the standby board can be established first, and then the keep-alive packet sending and receiving mechanism separated from the main board can be established; or the keep-alive packet sending and receiving mechanism separated from the main board can be established first, and then the main board and the standby board are established. The key data synchronization mechanism between the two can also establish a keep-alive message sending and receiving mechanism separated from the main board and a key data synchronization mechanism between the main board and the standby board.

S103: When the active/standby switchover is triggered, the keepalive packet sending and receiving mechanism is used to maintain the sending and receiving processing of the keep-alive packet, and the working main control board is switched from the mainboard to the standby board by using a key data synchronization mechanism.

In the connection scenario, the link between the local device and the peer device is established based on the link protocol. The link is successfully established and the traffic is forwarded. The local device supports the active/standby switchover. When the mainboard of the device main control board is configured to trigger or other abnormalities. When the active/standby switchover occurs under the trigger of an event, the keep-alive process is performed. The module continues to interact with the peer device for keep-alive messages. The keep-alive processing module does not perform the switching. The keep-alive processing module periodically sends the keep-alive message information saved before the switching, and interacts with the peer device for keep-alive messages.

The keepalive processing module continues to interact with the keepalive packets of the peer device, so that the local device can continue to interact with the peer device for keep-alive packets. During this period, the peer device cannot sense the master of the local device. The switchover is changed to maintain the stability of the link state. This ensures that the local device does not experience traffic interruption during the active/standby switchover.

The switching of the working main control board from the main board to the standby board by using the key data synchronization mechanism includes: suspending the transmission and reception of protocol packets, and acquiring the synchronized key data from the active/standby switching database after the synchronization event processing is completed, and recovering the protocol report. Transmit and receive processing, and update the keep-alive message in the keep-alive processing module.

After the event is triggered, the standby board does not process the sending and receiving of the protocol packets. After the event is complete, the standby board obtains the synchronized key data from the active/standby switchover database and obtains the key data. Then, the protocol information is exchanged with the peer device, and the related information of the keep-alive message in the keep-alive processing module is updated, and the original information is maintained without change.

In this embodiment, the keepalive processing module is added to separate the keep-alive packets from the protocol packet processing. In the process of the local device switching from the mainboard to the standby board, the local device can continue to keep the live device with the peer device. During the active/standby switchover, the peer device does not detect the active/standby switchover of the local device, and maintains the stability of the link state. This ensures that the local device does not experience traffic interruption during the active/standby switchover. .

In this embodiment, a scheme for separating the keep-alive processing module from the main board is adopted, and the keep-alive message is sent and received by the original main board, and is converted into a keep-alive processing module separated from the main board for sending and receiving, at the local end device. During the process of switching the mainboard to the standby board, the keep-alive processing module does not perform the switchover. Since the main board cannot continue to interact with the peer device for keep-alive packets, the transfer is maintained by the keep-alive processing module to protect the peer device. The way the live message interacts, making the peer device The process of switching the local device to the standby board is not detected, and the stability of the link state is maintained. This ensures that the local device does not experience traffic interruption during the active/standby switchover.

According to the link protocol-based device active/standby switching method provided by the embodiment of the present invention, the key data includes: configuration information, protocol status, and establishment of a keep-alive report separated from the main board by establishing a key data synchronization mechanism between the main board and the standby board. When the active/standby switchover is triggered, the keepalive packet sending and receiving mechanism is used to maintain the sending and receiving of the keep-alive message, and the working main control board is switched from the mainboard to the standby board by using the key data synchronization mechanism; During the process of switching the local device to the standby board, the local device can maintain the keep-alive packet transmission and reception process through the keep-alive packet sending and receiving mechanism. During this period, the peer device does not detect the active/standby switchover of the local device, and maintains the stability of the link state. This ensures that the local device does not experience traffic interruption during the active/standby switchover.

Embodiment 2

During the process of active/standby switchover, the stability of the link protocol state is related to the normal delivery of the entire upper-layer service traffic. To ensure that the device does not have a traffic interruption during the active/standby switchover, the device provides an active/standby switchover device based on the link protocol. Referring to FIG. 5, the method includes:

The first establishing module 201 is configured to establish a key data synchronization mechanism between the motherboard and the standby board. The key data includes: configuration information and protocol status.

The first establishing module 201 is configured to synchronize the key data on the main board to the standby board through the active/standby switching database, and the key data in the active/standby switching database is used when the standby board is started, thereby avoiding re-triggering link establishment. And the problem of broken chains.

The second establishing module 202 is configured to establish a keep-alive message sending and receiving mechanism separated from the main board.

The second establishing module 202 is configured to set a keep-alive processing module that is separated from the main board, and completes the sending and receiving processing of the keep-alive message by using the keep-alive processing module.

Since the keep-alive processing module is separate from the main board and exists independently, when the main control board of the device When the active/standby switchover is performed, the keepalive processing module can send and receive keepalive packets without being affected by the active/standby switchover.

The keep-alive processing module receives information about keep-alive messages, such as packet content, packet length, and packet sending period, before sending and receiving keep-alive packets. The keepalive message is periodically sent by the keepalive processing module of the local device to host the link protocol.

The first processing module 203 is configured to maintain the transmission and reception processing of the keep-alive packet by using the keep-alive packet sending and receiving mechanism when the active/standby switchover is triggered.

In the connection scenario, the link between the local device and the peer device is established based on the link protocol. The link is successfully established and the traffic is forwarded. The local device supports the active/standby switchover. When the mainboard of the device main control board is configured to trigger or other abnormalities. When the active/standby switchover occurs under the triggering of the event, the first processing module 203 continues to perform the interaction processing of the keepalive message with the peer device by using the keep-alive processing module. The keep-alive processing module does not perform the switching. The keep-alive processing module periodically sends the keep-alive message information saved before the switching, and interacts with the peer device for keep-alive messages.

The second processing module 204 is configured to switch the working main control board from the mainboard to the standby board by using a key data synchronization mechanism when the active/standby switchover is triggered.

The second processing module 204 is configured to: suspend the transmission and reception processing of the protocol packet, and obtain the synchronized key data from the active/standby switching database after the synchronization event processing is completed, restore the protocol packet transmission and reception processing, and update the keep-alive processing. Keep-alive messages in the module.

Specifically, when the active/standby switchover is triggered, the second processing module 204 temporarily does not process the sending and receiving of the protocol packets, and waits for the configuration loading and the synchronization of the interface to be completed, and the standby board obtains the synchronized key data from the active/standby switching database. After getting the key data, start with the peer device The protocol message is exchanged, and the related information of the keep-alive message in the keep-alive processing module is updated, and the original information is maintained without change.

In this embodiment, a scheme for separating the keep-alive processing module from the main board is adopted, and the keep-alive message is sent and received by the original main board, and is converted into a keep-alive processing module separated from the main board for sending and receiving, at the local end device. During the process of switching the mainboard to the standby board, the keep-alive processing module does not perform the switchover. Since the main board cannot continue to interact with the peer device for keep-alive packets, the transfer is maintained by the keep-alive processing module to protect the peer device. In the active/standby switchover mode, the peer device does not detect the process of switching the local device to the standby device. This ensures that the local device does not generate traffic during the active/standby switchover. The problem of interruption.

According to the link protocol-based device active/standby switching device provided by the embodiment of the present invention, a key data synchronization mechanism between the main board and the standby board is established by the first establishing module 201, and the key data includes: configuration information, protocol status, and second establishment. The module 202 establishes a keep-alive message sending and receiving mechanism separated from the main board. When the active/standby switchover is triggered, the first processing module 203 maintains the sending and receiving process of the keep-alive message by using the keep-alive message sending and receiving mechanism, and the second processing module 204 uses the key data. The synchronization mechanism switches the working main control board from the main board to the standby board. In the process of switching the local device to the standby board, the keepalive packet is sent and received through the keep-alive packet sending and receiving mechanism. The local device can perform the interaction between the local device and the peer device. The peer device does not detect the active/standby switchover of the local device. This ensures the stability of the link state and ensures the stability of the link. The end device does not experience traffic interruption during the active/standby switchover.

It should be pointed out here that the description of the above device embodiment and the description of the above method embodiment The description is similar and has similar advantageous effects as the method embodiments, and therefore will not be described again. For the technical details not disclosed in the embodiment of the present invention, please refer to the description of the method embodiment of the present invention, and the details are not described herein.

Here, in practical applications, the first establishing module 201, the second establishing module 202, the first processing module 203, and the second processing module 204 may each be a central processing unit (CPU), or a microprocessor (MPU), or Digital signal processor (DSP), or programmable gate array (FPGA) implementation.

In another embodiment, a computer storage medium is provided. The computer storage medium stores computer executable instructions for executing the link protocol based device active/standby switching method shown in FIG. 1.

Obviously, those skilled in the art should understand that the modules or steps of the above embodiments of the present invention can be implemented by a general computing device, which can be concentrated on a single computing device or distributed among multiple computing devices. On the network, optionally, they may be implemented by program code executable by the computing device, such that they may be stored in a storage medium (ROM/RAM, disk, optical disk) by a computing device, and in some In this case, the steps shown or described may be performed in an order different from that herein, or they may be separately fabricated into individual integrated circuit modules, or a plurality of the modules or steps may be implemented as a single integrated circuit module. Therefore, the invention is not limited to any particular combination of hardware and software.

The above is a detailed description of the embodiments of the present invention in conjunction with the specific embodiments, and the specific embodiments of the present invention are not limited to the description. It will be apparent to those skilled in the art that the present invention may be made without departing from the spirit and scope of the invention.

Industrial applicability

In the embodiment of the present invention, in the process of switching the homeboard of the local device to the standby device, the local device can be properly protected from the peer device by using the keep-alive packet sending and receiving mechanism separated from the mainboard to maintain the sending and receiving of the keep-alive packets. Interaction between live packets. During this period, the peer device does not sense the active and standby devices of the local device. The switchover is changed to maintain the stability of the link state. This ensures that the local device does not experience traffic interruption during the active/standby switchover.

Claims

An active/standby switchover method for a device based on the link protocol, including:

Establish a key data synchronization mechanism between the motherboard and the standby board. The key data includes: configuration information and protocol status.

Establishing a keep-alive message sending and receiving mechanism separated from the main board;

When the active/standby switchover is triggered, the keep-alive packet sending and receiving mechanism is used to maintain the transmission and reception processing of the keep-alive packet, and the working main control board is switched from the mainboard to the standby board by using the key data synchronization mechanism.
The link-based device active/standby switching method according to claim 1, wherein the establishing a keep-alive packet sending and receiving mechanism separated from the main board comprises: setting a keep-alive processing module separate from the main board, The keep-alive processing module completes the sending and receiving process of the keep-alive message.
The link-based device-based active/standby switchover method of claim 2, wherein the receiving and receiving the keep-alive message by using the keep-alive packet sending and receiving mechanism includes: when the active/standby switchover is performed, The keep-alive processing module continues to perform the interaction processing of the keep-alive message with the peer device.
The link protocol-based device active/standby switching method according to any one of claims 1 to 3, wherein the establishing a key data synchronization mechanism between the motherboard and the standby board comprises: the key on the motherboard The data is synchronized to the standby board through the active/standby switching database. The key data in the active/standby switching database is used when the standby board is started.
The link-based device-based active/standby switchover method of claim 4, wherein the switching of the working main control board from the mainboard to the standby board by using the key data synchronization mechanism includes: suspending protocol packets After the synchronization event processing is completed, the key data of the synchronization is obtained from the active/standby switching database, the transmission and reception processing of the protocol packet is resumed, and the keep-alive message is updated.
An active/standby switchover device for a device based on a link protocol, including:

The first establishing module is configured to establish a key data synchronization mechanism between the motherboard and the standby board, where the key data includes: configuration information and protocol status;

The second establishing module is configured to establish a keep-alive packet sending and receiving mechanism separated from the main board;

The first processing module is configured to maintain the sending and receiving process of the keep-alive packet by using the keep-alive packet sending and receiving mechanism when the active/standby switching is triggered;

The second processing module is configured to switch the working main control board from the mainboard to the standby board by using the key data synchronization mechanism when the active/standby switchover is triggered.
The link-based device active/standby switching device of claim 6, wherein the second establishing module is configured to: set a keep-alive processing module separate from the mainboard, and complete the The transmission and reception processing of the keep-alive message.
The link-based device active/standby switching device of claim 7, wherein the first processing module is configured to continue to perform the foregoing with the peer device by the keep-alive processing module during the active/standby switchover Interactive processing of keep-alive messages.
The link-based device active/standby switching device according to any one of claims 6-8, wherein the first establishing module is configured to: synchronize the key data on the main board through an active/standby switching database. The key data in the active/standby switching database is used to be used when the standby board is started.
The link-based device active/standby switching device of claim 9, wherein the second processing module is configured to: suspend and send protocol packets, and switch from the active/standby switch after the synchronization event processing is completed. The key data of the synchronization is obtained in the database, the transceiving processing of the protocol packet is resumed, and the keep-alive packet is updated.
A computer storage medium, wherein the computer storage medium stores a computer program for performing the link protocol-based device active/standby switching method according to any one of claims 1 to 5.