WO2012058888A1

WO2012058888A1 - Method and device for monitoring multiple links

Info

Publication number: WO2012058888A1
Application number: PCT/CN2011/071561
Authority: WO
Inventors: 范汇华
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-11-03
Filing date: 2011-03-07
Publication date: 2012-05-10
Also published as: CN101984586A

Abstract

A method for monitoring multiple links is provided by the present invention, used to detect the multiple links, for accurately obtaining whether the multi-link congestion occurs or not, and ensuring normal transmission of information. The method includes: obtaining current usable bandwidth of the multiple links; judging whether the current usable bandwidth of the multiple links is less than a preset minimum bandwidth threshold; if yes, performing the bandwidth protection measures, and sending out alarm information. A device for detecting and monitoring multiple links is also provided by the present invention correspondingly. By applying the present invention, when the bandwidth does not satisfy the requirement because the partial sub-links break down, the alarm information is sent out to obtain whether the multiple links break down, and the multi-link maintenance is performed conveniently, the information transmission delay due to the multi-link congestion is prevented.

Description

Multi-chain monitoring method and device

The present invention relates to the field of communications, and in particular, to a multi-chain monitoring method and apparatus. Background technique

With the widespread application of PPP (Point to Point Protocol), MPPP (PPP Multilink Protocol) has emerged as a PPP function extension protocol. It can provide users with more bandwidth, realize fast data forwarding, and can also dynamically allocate sub-chain resources, effectively utilize sub-chain resources, and bundle multiple low-speed sub-chains together to form a multi-chain. The typical networking of multi-chain is shown in Figure 1. The maximum bandwidth of each sub-chain is 2M bit/s. If the three low-speed sub-chains are bundled into one multi-chain, the maximum bandwidth of the multi-chain is 2M*3 bit. /s, that is, the bandwidth of the multi-chain is the sum of the bandwidths of the sub-chains.

However, the minimum bandwidth of multi-chain aggregation cannot be guaranteed in the prior art. For example, when the data needs to be transmitted, the prediction is performed. If the minimum bandwidth of the multi-chain required during the transmission is 4 Mbit/s, the transmission of the multi-chain will be congested when the bandwidth is smaller than this bandwidth, resulting in delay and failure to satisfy the message. The real-time requirement of the transmission, where the data can be transmitted by a single user or multiple users. When the multi-chain is as shown in Figure 1, it consists of three sub-chains, each with a bandwidth of 2 M bit/s, a multi-chain bandwidth of 6 M bit/s, and the minimum multi-chain required during transmission. The bandwidth is 4 Mbit/s. If two sub-chains in the multi-chain fail, only one sub-chain works normally. The available bandwidth is only 2 Mbit/s, which cannot meet the minimum bandwidth required for transmission, resulting in multi-chain congestion. However, there is no corresponding treatment in the prior art, and it is impossible to know whether the multi-chain is congested. Summary of the invention

Embodiments of the present invention provide a multi-chain monitoring method for implementing monitoring of multiple chains, It is true that there is congestion in the multi-chain to ensure the normal transmission of information.

A multi-chain monitoring method includes the following steps:

Obtain the currently available bandwidth of the multi-chain;

Determining whether the currently available bandwidth of the multi-chain is less than a preset minimum bandwidth threshold;

If the current available bandwidth of the multi-chain is less than the preset minimum bandwidth threshold, the bandwidth protection measures are taken and an alarm message is sent.

A multi-chain monitoring device includes: a calculation module, a comparison module, and a protection module; wherein the calculation module is configured to obtain a current available bandwidth of the multi-chain;

The comparing module is configured to determine whether the currently available bandwidth of the multi-chain is less than a preset minimum bandwidth threshold;

The protection module is configured to send an alarm message when the determination result is yes.

The embodiment of the present invention obtains the currently available bandwidth of the multi-chain; determines whether the current available bandwidth of the multi-chain is smaller than a preset minimum bandwidth; and when the judgment result is yes, the bandwidth protection measure is taken, and the alarm information is sent. Therefore, when a part of the sub-chain fails and the bandwidth is not satisfactory, an alarm message is sent to know whether the multi-chain is faulty, which facilitates multi-chain maintenance and prevents information transmission delay due to multi-chain congestion. DRAWINGS

1 is a schematic diagram of a network structure of a multi-chain in the prior art;

2A is a main structural diagram of a multi-chain monitoring device according to an embodiment of the present invention;

2B is a detailed structural diagram of a multi-chain monitoring device according to an embodiment of the present invention;

3 is a main flowchart of a multi-chain monitoring method according to an embodiment of the present invention;

4 is a detailed flowchart of a multi-chain monitoring method according to an embodiment of the present invention;

FIG. 5 is a detailed flowchart of recovering a multi-chain operating state according to an embodiment of the present invention; FIG.

FIG. 6 is a detailed flowchart of determining whether multi-chain protection processing is required in the embodiment of the present invention. detailed description

The embodiment of the present invention obtains the currently available bandwidth of the multi-chain; determines whether the current available bandwidth of the multi-chain is smaller than a preset minimum bandwidth; and when the judgment result is yes, the bandwidth protection measure is taken, and the alarm information is sent. Therefore, when a part of the sub-chain fails and the bandwidth is not satisfactory, an alarm message is sent to know whether the multi-chain is faulty, which facilitates multi-chain maintenance and prevents information transmission delay due to multi-chain congestion.

2A is a main structural diagram of a multi-chain monitoring apparatus according to an embodiment of the present invention. As shown in FIG. 2A, the apparatus for multi-chain monitoring in the embodiment of the present invention includes a comparison module 201, a protection module 202, and a calculation module 203. The device has one set at each end of the multi-chain, and the same operation process is performed at both ends simultaneously to avoid the following situation: If the device is only located at one end of the multi-chain, when the device detects the sub-chain in the multi-chain An exception occurs, the multi-chain is protected, its work is stopped, and the multi-chain peer is not aware of the message, and still sends data to the multi-chain end or waits to receive data, which may cause a failure.

The comparison module 201 is configured to determine whether the currently available bandwidth of the multi-chain is less than a preset minimum bandwidth threshold. The comparison module 201 compares the currently available bandwidth of the multi-chain with the preset minimum bandwidth threshold, and determines whether the current available bandwidth of the multi-chain is less than the minimum bandwidth threshold. If the determination result is yes, the notification protection module 202 sends an alarm message to learn. This multi-chain is abnormal; if the judgment result is no, the multi-chain continues to work normally.

The protection module 202 is configured to: when the determination result is yes, take bandwidth protection measures and issue alarm information. The protection module 202 is configured to protect the multiple chains when the current available bandwidth of the multi-chain is less than the minimum bandwidth threshold. Preferably, the protection measure may be to stop only the operation of the multi-chain, that is, to stop the current data forwarding of the multi-chain; or to stop the work of the multi-chain, and switch the multi-chain service to other alternate multi-chains. For example, in a switching manner, the protection module 202 switches the address of the received data to the standby multi-chain by the multi-chain, so that the service information sent by the sender is transmitted through the alternate multi-chain, and the multi-chain is no longer used. A multi-chain can have one or more spare multi-chains, and the spare multi-chain is more When the chain fails, the bandwidth of the alternate multi-chain is at least equal to the maximum available bandwidth of the multi-chain. The protection module 202 sends an alarm message to learn that the multi-chain is faulty, and the multi-chain that locates the fault when the maintenance is convenient.

The calculation module 203 is used to obtain the currently available bandwidth of the multi-chain. When the multi-chain is running, some sub-chains may be abnormal, causing the sub-chain to be unavailable. The sub-chain automatically jumps from the active state to the inactive state, and the working status bit in the state machine changes. The calculation module 203 calculates the current available bandwidth of the multi-chain according to the bandwidth of the remaining activated sub-chains in the multi-chain, that is, calculates the current available bandwidth of the multi-chain according to the bandwidth of the currently activated sub-chain of the multi-chain, and the current available bandwidth of the multi-chain is more The bandwidth of the currently activated sub-chain in the chain is added. The calculation module 203 is also used to calculate the maximum available bandwidth of the multi-chain. Preferably, the calculation module 203 calculates the total bandwidth of the activated sub-chains in the multi-chain when the multi-chain is initially activated, that is, adds the bandwidths of the activated sub-chains in the multi-chain to obtain the maximum available bandwidth of the multi-chain. Among them, when the multi-chain is activated initially, each sub-chain in the multi-chain is activated, but at this time, some sub-chains may have abnormalities and cannot be activated, and these abnormalities may be abnormalities that cannot be automatically recovered. Therefore, when calculating the maximum available bandwidth of the multi-chain, the bandwidths of all the sub-chains included in the multi-chain are not selected to be added, but the bandwidths of the activated sub-chains in the multi-chain are added after the multi-chain is initially activated.

2B is a detailed structural diagram of a multi-chain monitoring apparatus according to an embodiment of the present invention. Referring to FIG. 2B, the apparatus further includes a detecting module 204 and a negotiating module 205. The device may further include a configuration module 206.

The detection module 204 is configured to detect multiple chains. The detecting module 204 detects the multi-chain when the working status bit in the state machine changes, determines the sub-chain that is currently activated by the multi-chain, and detects the currently available bandwidth in the multi-chain, that is, the currently available bandwidth of the multi-chain. The multi-chain currently available bandwidth is the sum of the bandwidths of the activated sub-chains in the multi-chain. Each sub-chain in the multi-chain has a state machine for recording the state of the sub-chain. The state machine contains a plurality of status bits, one of which is a working status bit, for example, if the sub-chain is active, then The working status bit is "1". If the sub-chain is inactive, the working status bit is "0". Determine whether a sub-chain is activated, you can pass The working status bits in the state machine of the sub-chain are judged, or other ways may be used to indicate activation and inactivity. When the multi-chain is running, some sub-chains may be abnormal, causing the sub-chain to be unavailable. The sub-chain automatically jumps from the active state to the inactive state, and the working status bit in the state machine changes, by "1". It becomes "0". When the detection module 204 finds that the working status bit in the sub-chain state machine changes, that is, when the detection module 204 finds that the status of the sub-chain has changed from active to inactive, or from inactive to active, the sub-function is started. The multi-chain in which the chain is located is detected to determine the currently activated sub-chain in the multi-chain. The inactive state of the sub-chain may be that the multi-chain has not been activated; or the sub-chain may be faulty; or the other sub-chains of the multi-chain where the sub-chain is located are faulty, and the protection module 202 performs protection processing. , all the sub-chains in the multi-chain are stopped.

The negotiation module 205 is configured to implement negotiation bundling of the sub-chain. In the multi-chain, the negotiation module 205 is responsible for the negotiation work at both ends of each sub-chain. The two ends of the sub-chain determine the maximum data that can be transmitted through negotiation. After the negotiation succeeds, the bandwidth of the sub-chain is obtained, and the sub-chain is activated. This negotiation is implemented by sending packets to each other at both ends of the sub-chain. The task of negotiation is to determine the maximum bandwidth that this sub-chain can transmit. One end of the sub-chain sends a packet to the other end of the sub-chain. The packet carries information about how much data can be sent by one end of the sub-chain. The other end of the sub-chain returns a packet to one end of the sub-chain. The packet carries the sub-chain. The maximum amount of data that can be received at the other end. If the data carried in the two packets is equal in size, the state machine of the sub-chain sets the state of the sub-chain to be activated, and the working status bit is set to " Γ , if the data carried in the two packets are not equal in size, You need to continue to send packets to each other and negotiate the size of the data that can be accepted by both ends. For example, the data size of one sub-chain can be 1000, and the other end of the sub-chain can receive 800. The data carried in the text is not equal in size. The negotiation module 205 needs to continue to send packets through the two ends to determine the size of the data that can be accepted at both ends of the sub-chain. For example, one end of the sub-chain continues to send the second end to the other end of the sub-chain. The size of the data that can be sent by one end of the second packet carrying the second packet is 800. The data is the smaller value of the data carried in the packets sent from the first time to each other. After receiving the packet, the terminal sends a second packet to the end of the sub-chain, and the packet carries the other end of the sub-chain. The data size is 800, and the data carried in the two second packets is equal in size. After the negotiation is completed, the negotiation module 205 changes the working status bit in the state machine of the sub-chain, and changes the working status bit from "0". Activate this subchain for "1".

The configuration module 206 is configured to configure a minimum bandwidth threshold. The configuration module 206 configures the minimum bandwidth threshold according to the needs of the application, that is, according to the bandwidth configuration required for the transmission, for example, the minimum bandwidth threshold can be the minimum bandwidth required for transmission. In order to facilitate the comparison module 201 to compare the minimum bandwidth threshold with the current available bandwidth of the multi-chain, the configuration module 206 can also store the preset minimum bandwidth threshold. For example, the maximum available bandwidth of the multi-chain is 10, and the minimum bandwidth required for transmission is 6, the configuration module 206 sets the minimum bandwidth threshold to 6. The two ends of the multi-chain are configured at the same time. The value of the configuration needs to be consistent, and the configured value needs to be no greater than the maximum available bandwidth of the multi-chain.

The following describes a method for multi-chain protection according to a flow. FIG. 3 is a main flowchart of a multi-chain monitoring method according to an embodiment of the present invention. Referring to FIG. 3, the main method flow of multi-chain monitoring in the embodiment of the present invention is as follows:

Step 301: Obtain the currently available bandwidth of the multi-chain.

Step 302: Determine whether the currently available bandwidth of the multi-chain is less than a preset minimum bandwidth threshold. When the result of the determination is yes, proceed to step 303, otherwise the multi-chain continues to operate normally.

It should be noted that the preset minimum bandwidth threshold is not greater than the maximum available bandwidth of the multi-chain and is not less than the bandwidth required for transmission.

Step 303: When the judgment result is yes, the bandwidth protection measure is taken, and the alarm information is sent. 4 is a detailed flowchart of a multi-chain monitoring method according to an embodiment of the present invention. Referring to FIG. 4, the detailed method of multi-chain monitoring in the embodiment of the present invention is as follows:

It is determined that the working state bit of the state machine having the sub-chain in the multi-chain changes.

Step 401: Detect multiple chains.

Step 402: Determine if a sub-chain is unavailable. When the determination result is yes, step 403 is performed, otherwise step 406 is performed. The sub-chain in which the anomaly occurred is determined by the state machine that changed. Step 403: Calculate the currently available bandwidth of the multi-chain.

Step 404: Determine whether the currently available bandwidth of the multi-chain is less than a minimum bandwidth threshold. When the result of the determination is yes, proceed to step 405, otherwise proceed to step 406.

Step 405: Stop the work of the entire multi-chain and issue an alarm message. Or if the multi-chain has multiple links, the multi-chain service can also be switched to the alternate multi-chain. Alternatively, it is only possible to issue an alarm message without stopping the operation of the multi-chain, and the multi-chain can continue to transmit if the current available bandwidth is insufficient.

Step 406: Multi-chain operation is normal.

After the multi-chain extraction protection process, the operation of the multi-chain may be stopped. If the fault of the abnormal sub-chain in the multi-chain is released, and the available bandwidth of the multi-chain re-satisfies the transmission requirement, the normal operation state of the multi-chain needs to be restored. Referring to FIG. 5, the detailed process of recovering the multi-chain running state in the embodiment of the present invention is as follows:

After the multi-chain protection process, the multi-chain stops working and the multi-chain service has been switched to its spare multi-chain.

Step 501: A sub-chain is released from the fault in the multi-chain, and the sub-chain that cancels the fault is activated. However, the multi-chain transmission data is not used at this time.

Step 502: Determine whether a state machine changes in the multi-chain. When the result of the determination is YES, the process proceeds to step 503, otherwise the process proceeds to step 501. Among them, the change of the state machine mentioned in this step refers to the change of the working status bit in the state machine.

Step 503: Calculate the currently available bandwidth of the multi-chain.

Step 504: Determine whether the currently available bandwidth of the multi-chain is less than a minimum bandwidth threshold. When the result of the determination is no, the process proceeds to step 505, otherwise the process proceeds to step 501.

Step 505: Resume the normal service processing of the multi-chain, and the multi-chain operates normally. This step can be accomplished by switching the receive address from the alternate multi-chain to multiple chains. Among them, the multi-chain negotiation process and the process of configuring the minimum bandwidth threshold are not required, and the multi-chain can be directly operated. Referring to FIG. 6, in the embodiment of the present invention, a detailed method for determining whether multi-chain detection is required is performed:

Step 601: Start multi-chain negotiation and activate multi-chain.

Step 602: Calculate the maximum available bandwidth of the multi-chain according to the activated sub-chain in the multi-chain.

Step 603: Configure the minimum bandwidth threshold. Configure the minimum bandwidth threshold based on the needs of the application and the maximum available bandwidth of the multi-chain.

Step 604: Determine whether there is a change in the working status bit in the state machine in the multi-chain. When the answer is yes, proceed to step 605, otherwise continue to step 606.

Step 605: Detect multiple chains.

Step 606: Multi-chain operation is normal.

The embodiment of the present invention obtains the currently available bandwidth of the multi-chain; determines whether the current available bandwidth of the multi-chain is smaller than a preset minimum bandwidth; and when the judgment result is yes, the bandwidth protection measure is taken, and the alarm information is sent. Therefore, when a part of the sub-chain fails and the bandwidth does not meet the requirements, the multi-chain is implemented with protection measures, and an alarm message is sent to know whether the multi-chain is faulty, facilitating multi-chain maintenance, preventing multi-chain congestion, and causing information transmission. There is a delay. The multi-chain is detected when the working status bit in the state machine of the sub-chain changes, so that the detection process can be started when necessary to avoid unnecessary resource consumption. The minimum bandwidth threshold is set. When the current available bandwidth of the multi-chain is less than the minimum bandwidth, the multi-chain is protected, and the multi-chain can be protected at a relatively accurate time, so that the protection is more timely and necessary. When multi-chain protection is applied, the operation of multi-chain can be stopped, and the multi-chain congestion and delay can be prevented by continuing to use the multi-chain transmission data; the multi-chain task can also be switched to other alternate multi-chains, so that the task can be performed. Normal transmission, no delay; Send an alarm message to know whether the multi-chain is faulty and the time of failure, and it is convenient for the maintenance equipment to maintain the multi-chain.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Therefore, the present invention can be implemented in an entirely hardware embodiment, fully software implemented For example, or in combination with an embodiment of software and hardware aspects. Moreover, the invention can be embodied in the form of one or more computer program products embodied on a computer usable storage medium (including but not limited to disk storage and optical storage, etc.) in which computer usable program code is embodied.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart and/or block diagrams, and combinations of flows and/or blocks in the flowcharts and/or block diagrams can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram. The spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and modifications of the invention

Claims

Claim

A multi-chain monitoring method, characterized in that the method comprises the following steps:

Obtain the currently available bandwidth of the multi-chain;

2. The method according to claim 1, wherein before obtaining the multi-chain currently available bandwidth, the method further comprises: changing the state of the sub-chain in the multi-chain from activated to inactive, or from inactive. For activation, detecting the multi-chain in which the sub-chain is located, and determining the activated sub-chain in the multi-chain;

The obtaining the currently available bandwidth of the multi-chain is: obtaining the multi-chain currently available bandwidth according to the detected bandwidth of the activated sub-chain in the multi-chain.

3. Method according to claim 1 or 2, characterized in that the multi-chain currently available bandwidth is the sum of the bandwidths of the activated sub-chains in the multi-chain.

4. The method according to claim 1, wherein the preset minimum bandwidth threshold is not greater than a maximum available bandwidth of the multi-chain and is not less than a bandwidth required for transmission.

5. The method of claim 4, wherein the multi-chain maximum available bandwidth is the sum of bandwidths of the activated sub-chains in the multi-chain when the multi-chain is initially activated.

The method according to claim 1, wherein the buffering protection measures are: stopping only the operation of the multi-chain, or stopping the operation of the multi-chain, and switching the multi-chain service to the standby multi-chain in.

A multi-chain monitoring device, comprising: a calculation module, a comparison module, and a protection module; wherein

The calculating module is configured to obtain a currently available bandwidth of the multi-chain;

The comparing module is configured to determine whether the currently available bandwidth of the multi-chain is less than a preset minimum Broadband bandwidth;

The protection module is configured to: when the current available bandwidth of the multi-chain is less than a preset minimum bandwidth, the bandwidth protection measure is taken, and the alarm information is sent.

The device according to claim 7, wherein the device further comprises a detecting module, configured to: when the state of the sub-chain in the multi-chain is changed from active to inactive, or from inactive to active, The multi-strand in which the sub-chain is located is detected to determine the activated sub-chain in the multi-strand;

The computing module obtains the currently available bandwidth of the multi-chain: obtaining the multi-chain currently available bandwidth according to the detected bandwidth of the activated sub-chain in the multi-chain.

9. Apparatus according to claim 7 or claim 8 wherein said multi-chain current available bandwidth is the sum of the bandwidths of the activated sub-chains in the multi-chain.

10. The apparatus according to claim 7, wherein the preset minimum bandwidth threshold is not greater than a maximum available bandwidth of the multi-chain and is not less than a bandwidth required for transmission.

11. Apparatus according to claim 10 wherein said multi-chain maximum available bandwidth is the sum of the bandwidths of the activated sub-chains in the multi-chain when the multi-chain is initially activated.

12. The device according to claim 7, wherein the protection module captures the bandwidth protection measures: stopping only the operation of the multi-chain, or stopping the operation of the multi-chain, and switching the multi-chain service to the standby In multiple chains.