CN103229462B - A kind of optimal route selection method, relevant device and communication system - Google Patents

Abstract

The embodiment of the present invention discloses an optimal path selection method, which evaluates the priority of each protection path in the protection path set from two aspects of network layer performance parameters and application layer performance parameters, and switches the current service when the working path fails. To the protection path with the highest priority, it avoids the failure to normally take over the current service due to insufficient carrying capacity of the protection path when a handover occurs, and improves the reliability of the network.

Description

An optimal path selection method, related equipment and communication system

technical field

The present invention relates to the communication field, in particular to an optimal path selection method, related equipment and a communication system.

Background technique

The protection technology allocates one or more protection paths in advance for the working path carrying services to improve network availability and improve user experience. By implementing the protection technology, when the working path fails, the service can be switched to the protection path to realize uninterrupted transmission. Commonly used protection technologies include 1+1, 1:1 and N:1. The 1+1 protection technology is to configure a protection path for the working path. The service flow is transmitted through the working path and the protection path at the same time. The sink end of the path decides to receive the service transmitted by the path with better service quality through certain performance indicators. flow. The 1:1 protection technology also configures a protection path for a working path, but the protection path is only used to carry services when the working path fails. When no fault occurs, the protection path resources can be used to transmit other low-level Additional business.

In order to improve the reliability of the communication system, multiple protection paths are usually configured. Existing protection schemes only consider the use of the network layer, such as selecting the protection path with the shortest distance or the protection path with the least load, without considering the corresponding protection path. usage of the application layer. The separate management of the network layer and the application layer leads to the inability to perform global resource optimization. Unreasonable selection of the protection path may lead to a decrease in the quality of service (QoS, Quality of Service), so the selected protection path may not be the best.

Contents of the invention

The technical problem to be solved by the embodiments of the present invention is to provide an optimal path selection method, device and communication system. It can solve the problem in the prior art that only the network layer resource usage of the protection path is evaluated, and the selected protection path is not necessarily the best.

In order to solve the above technical problems, the first aspect of the present invention provides an optimal path selection method, including:

The optimal path selection device acquires application layer performance parameters and network layer performance parameters of each protection path in the protection path set, wherein the protection path set includes at least two protection paths configured for the working path carrying the current service;

calculating and determining the priority of each protection path in the protection path set according to the application layer performance parameter and the network layer performance parameter;

When the working path fails, the current service is switched to the protection path with the highest priority in the protection path set.

With reference to the first aspect, in a first possible implementation manner, the optimal path selection device is a network layer controller, and the optimal path selection device obtains the application layer performance parameters and Network layer performance parameters, including:

Obtain the network layer performance parameters of each protection path in the protection path set, wherein the protection path set includes at least two protection paths configured for the working path carrying the current service;

Obtain the application layer performance parameters of each protection path in the protection path set reported by the application layer controller.

With reference to the first possible implementation of the first aspect, in the second possible implementation, when it is detected that the working path fails, the current service is switched to the one with the highest priority in the protection path set. After protecting the path, also include:

Judging whether the application layer resource needs to be switched, if yes, sending a switching request to the application layer controller, so that the application layer controller performs the switching operation of the application layer resource.

With reference to the first aspect, in a third possible implementation manner, the optimal path selection device is an application layer controller, and the optimal path selection device obtains the application layer performance parameters and Network layer performance parameters, including:

Obtain the application layer performance parameters of each protection path in the protection path set;

Obtain the network layer performance parameters of each protection path in the protection path set reported by the network layer controller.

With reference to the third possible implementation manner of the first aspect, in a fourth possible implementation manner, when the working path fails, switching the current service to the protection path with the highest priority in the set of protection paths on the path, including:

When detecting the failure information of the working path reported by the network layer controller, the network layer controller is notified to switch the current service to the protection path with the highest priority in the protection path set.

With reference to any one of the fourth possible implementation manners from the first aspect to the first aspect, in a fifth possible implementation manner, when the working path fails, switching the current service to the The steps on the protection path with the highest priority in the protection path set include:

When the working path fails, detect whether each protection path in the protection path set is normal;

Switching the current service to the normal protection path with the highest priority in the protection path set.

With reference to the fifth possible implementation manner of the first aspect, in a sixth possible implementation manner, the detecting whether each protection path in the protection path set is normal specifically includes:

periodically sending a detection packet to the sink node of the protection path through the source node of the protection path;

Judging whether a response message received by the sink node after receiving the detection packet is received within a preset duration, if yes, then judging that the protection path is normal; if not, judging that the protection path is abnormal .

With reference to any one of the sixth possible implementation manners from the first aspect to the first aspect, in a seventh possible implementation manner, the application layer performance parameter includes an application resource group separation degree, and the application resource group The degree of separation is calculated according to the number of application resource entities shared by the working path and the protection path.

With reference to any one of the seventh possible implementation manners from the first aspect to the first aspect, in an eighth possible implementation manner, the network layer performance parameters include network resource group separation and protection path capability, so The network resource group separation degree is calculated according to the number of network resource entities shared by the working path and the protection path; the protection path capability is at least calculated according to the bandwidth information or delay information of the protection path.

With reference to the eighth possible implementation manner of the first aspect, in a ninth possible implementation manner, the calculation and determination of each protection path in the protection path set according to the application layer performance parameter and the network layer performance parameter Priorities include:

calculating and determining the priority of each protection path in the protection path set according to the application layer performance parameter and the network layer performance parameter according to a preset time period.

The second aspect of the present invention provides an optimal path selection device, including:

An acquisition module, configured to acquire application layer performance parameters and network layer performance parameters of each protection path in the protection path set, wherein the protection path set includes at least two protection paths configured for the working path carrying the current service;

A calculation module, configured to calculate and determine the priority of each protection path in the set of protection paths according to the application layer performance parameters and network layer performance parameters;

A switching module, configured to switch the current service to the protection path with the highest priority in the set of protection paths when the working path fails.

With reference to the second aspect, in a first possible implementation manner, the fault detection unit detects whether each protection path in the protection path set is normal when the working path fails;

A service switching unit, configured to switch the current service to the normal protection path with the highest priority in the set of protection paths.

With reference to the first possible implementation manner of the second aspect, in a second possible implementation manner, the fault detection unit includes:

A detection packet sending unit, configured to periodically send a detection packet to the sink node of the protection path through the source node of the protection path;

A fault judging unit, configured to judge whether a response message received by the destination node after receiving the detection packet is received within a preset time period, if yes, judge that the protection path is normal; if not, judge The protection path is abnormal.

With reference to any one of the second aspect to the second possible implementation manner of the second aspect, in a third possible implementation manner, the application layer performance parameter includes application resource group separation;

The acquisition unit includes;

The first calculation unit is configured to calculate and determine the application resource group separation degree according to the number of application resource entities shared by the working path and the protection path.

With reference to the third possible implementation of the second aspect, in a fourth possible implementation, the network layer performance parameters include network resource group separation and protection path capability;

The acquisition unit also includes:

A second calculation unit, configured to calculate and determine the network resource group separation degree according to the number of network resource entities shared by the working path and the protection path;

A third calculating unit, configured to calculate and determine the capability of the protection path according to bandwidth information or delay information of the protection path.

In combination with the second aspect to the fourth possible implementation manner of the second aspect, in a fifth possible implementation manner, the computing module includes:

An update unit, configured to calculate and determine the priority of each protection path in the protection path set according to the application layer performance parameters and network layer performance parameters according to a preset time period.

A third aspect of the present invention provides a network layer controller, including:

A network layer performance acquisition module, configured to acquire network layer performance parameters of each protection path in the protection path set, wherein the protection path set includes at least two protection paths configured for the working path carrying the current service;

An application layer performance receiving module, configured to obtain the application layer performance parameters of each protection path in the protection path set reported by the application layer controller;

A first calculation module, configured to calculate and determine the priority of each protection path in the set of protection paths according to the network layer performance parameters and the application layer performance parameters;

The first switching module is configured to switch the current service to the protection path with the highest priority in the protection path set when detecting that the working path fails.

With reference to the third aspect, in a first possible implementation manner, the first switching module includes:

a first detection unit, configured to detect whether each protection path in the protection path set is normal when the working path fails;

The first switching unit is configured to switch the current service to the normal protection path with the highest priority in the set of protection paths.

With reference to the third aspect or the first possible implementation manner of the third aspect, in a second possible implementation manner, the first detection unit includes:

A first detection packet sending unit, configured to periodically send a detection packet to the sink node of the protection path through the source node of the protection path;

The first response detection unit is configured to determine whether a response message received by the destination node after receiving the detection packet is received within a preset time period, and if yes, determine that the protection path is normal; if no, Then it is judged that the protection path is abnormal.

With reference to any one of the third aspect to the second possible implementation manner of the third aspect, in the third possible implementation manner, the network layer performance parameters include network resource group separation degree and protection path capability, so The network layer performance acquisition module includes:

A network resource separation degree calculation unit, configured to calculate the network resource group separation degree according to the number of network resource entities shared by the working path and the protection path;

The protection path capability calculation unit is configured to obtain the protection path capability according to the bandwidth information or delay information of the protection path.

With reference to any one of the third aspect to the third possible implementation manner of the third aspect, in a fourth possible implementation manner, the first calculation module includes:

The first updating unit is configured to calculate and determine the priority of each protection path in the protection path set according to the application layer performance parameters and the network layer performance parameters according to a preset time period.

A fourth aspect of the present invention provides an application layer controller, including:

An application layer performance acquisition module, configured to obtain application layer performance parameters of each protection path in the protection path set; wherein, the protection path set includes at least two protection paths configured for the working path carrying the current service;

A network layer performance receiving module, configured to obtain network layer performance parameters of each protection path in the protection path set reported by the network layer controller;

A second calculation module, configured to calculate and determine the priority of each protection path in the set of protection paths according to the application layer performance parameters and the network layer performance parameters;

The second switching module is configured to notify the network layer controller to switch the current service to the protection path with the highest priority in the protection path set when detecting the failure information of the working path reported by the network layer controller.

With reference to the fourth aspect, in a first possible implementation manner, the second switching module includes:

a second detection unit, configured to detect whether each protection path in the protection path set is normal when the working path fails;

The second switching unit is configured to notify the network layer controller to switch the current service to the protection path with the highest priority in the protection path set.

With reference to the fourth aspect or the first possible implementation manner, in a second possible implementation manner, the application layer performance parameter includes an application resource group separation degree, and the network layer performance receiving module includes:

The application group resource separation degree calculation unit is configured to calculate the application resource group separation degree according to the number of application resource entities shared by the working path and the protection path.

With reference to any one of the fourth aspect to the second possible implementation manner of the fourth aspect, in a third possible implementation manner, the second calculation module includes:

The second updating unit is configured to calculate and determine the priority of each protection path in the protection path set according to the application layer performance parameters and the network layer performance parameters according to a preset time period.

The fifth aspect of the present invention provides an optimal path selection device, including: an input device, an output device, a memory and a processor, wherein a set of program codes are stored in the memory, and the processor is used to call the memory Program code stored in to perform the following actions:

Obtain the application layer performance parameters and network layer performance parameters of each protection path in the protection path set, wherein the protection path set includes at least two protection paths configured for the working path carrying the current service;

calculating and determining the priority of each protection path in the protection path set according to the application layer performance parameter and the network layer performance parameter;

When the working path fails, the current service is switched to the protection path with the highest priority in the protection path set.

With reference to the fifth aspect, in a possible implementation manner, the processor is specifically configured to execute:

Obtain the network layer performance parameters of each protection path in the protection path set, wherein the protection path set includes at least two protection paths configured for the working path carrying the current service;

Obtain the application layer performance parameters of each protection path in the protection path set reported by the application layer controller.

With reference to the first possible implementation manner of the fifth aspect, in a second possible implementation manner, the processor is further configured to execute:

Judging whether the application layer resource needs to be switched, if yes, sending a switching request to the application layer controller, so that the application layer controller performs the switching operation of the application layer resource.

With reference to the fifth aspect, in a third possible implementation manner, the processor is specifically configured to execute:

Obtain the application layer performance parameters of each protection path in the protection path set;

Obtain the network layer performance parameters of each protection path in the protection path set reported by the network layer controller.

With reference to the third possible implementation manner of the fifth aspect, in a fourth possible implementation manner, the processor is specifically configured to execute:

When detecting the failure information of the working path reported by the network layer controller, the network layer controller is notified to switch the current service to the protection path with the highest priority in the protection path set.

With reference to any one of the fifth aspect to the fourth possible implementation manner of the fifth aspect, in a fifth possible implementation manner, the processor is specifically configured to execute:

When the working path fails, detect whether each protection path in the protection path set is normal;

Switching the current service to the normal protection path with the highest priority in the protection path set.

With reference to the fifth possible implementation manner of the fifth aspect, in six possible implementation manners, the processor is specifically configured to execute:

periodically sending a detection packet to the sink node of the protection path through the source node of the protection path;

Judging whether a response message received by the sink node after receiving the detection packet is received within a preset duration, if yes, then judging that the protection path is normal; if not, judging that the protection path is abnormal .

With reference to the sixth possible implementation manner of the fifth aspect, in a seventh possible implementation manner, the processor is specifically configured to execute:

calculating and determining the priority of each protection path in the protection path set according to the application layer performance parameter and the network layer performance parameter according to a preset time period.

A sixth aspect of the present invention provides a communication system, including any one of the above-mentioned optimal path selection device, network layer controller, or application layer controller.

Implementing the embodiment of the present invention has the following beneficial effects:

Evaluate the priority of each protection path in the protection path set through network layer performance parameters and application layer performance parameters. When the working path fails, the current service will be switched to the protection path with the highest priority, avoiding the need for switching. The carrying capacity of the protection path is insufficient to normally take over the current service, which improves the reliability of the network.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a schematic flow chart of an optimal path selection method of the present invention;

Fig. 2 is another schematic flow chart of an optimal path selection method of the present invention;

Fig. 3 is a schematic structural diagram of a communication system of the present invention;

Fig. 4 is a working diagram of a communication system in Fig. 3;

Fig. 5 is a schematic structural view of an optimal path selection device of the present invention;

Fig. 6 is a schematic structural diagram of the calculation module in Fig. 5;

Fig. 7 is a schematic structural diagram of the acquisition module in Fig. 5;

Fig. 8 is a schematic structural diagram of the switching module in Fig. 5;

Fig. 9 is a schematic structural diagram of the fault detection module in Fig. 8;

Fig. 10 is a schematic structural diagram of a network layer controller of the present invention;

Fig. 11 is a schematic structural diagram of the first switching module in Fig. 10;

Fig. 12 is a schematic structural diagram of the first detection unit in Fig. 11;

Figure 13 is a schematic structural diagram of the network layer performance acquisition module in Figure 10'

Fig. 14 is a schematic structural diagram of the first computing module in Fig. 10;

Fig. 15 is a schematic structural diagram of an application layer controller of the present invention;

Fig. 16 is a schematic structural diagram of a second switching module in Fig. 15;

Fig. 17 is a schematic structural diagram of the application layer performance acquisition module in Fig. 15;

Fig. 18 is a schematic structural diagram of the second computing module in Fig. 15;

Fig. 19 is another structural schematic diagram of an optimal path selection device of the present invention.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Referring to Fig. 1, it is a schematic flow chart of an optimal path selection method of the present invention, including:

Step 101. Obtain application layer performance parameters and network layer performance parameters of each protection path in the protection path set.

Specifically, the protection path set includes at least two protection paths configured for the working path carrying the current service, and the optimal path selection device obtains application layer performance parameters and network layer performance parameters, and the optimal path selection device may be located in the network A network layer controller at the application layer, or an application layer controller at the application layer, or a third-party device interacting with the network layer controller and the application layer controller respectively.

Taking the optimal path selection device as the network layer controller as an example, the network layer controller obtains the network layer performance parameters of the protection path, and the network layer performance parameters refer to the parameters for evaluating the performance of the protection path, such as the bandwidth information of the protection path and /or delay information, etc., the application layer performance parameters obtained by the application layer controller of the protection path refer to the pros and cons of the performance of the application resource entity that carries the service through the protection path, such as server space information, server load information or server For parameters such as response time, the application layer controller sends the obtained application layer performance parameters to the network layer controller, so that the network layer controller obtains the application layer performance parameters of the protection paths in the protection path set.

Taking the optimal path selection device as an example of an application layer controller, the application layer controller obtains the application layer performance parameters of the protection path, and at the same time receives the network layer performance parameters reported by the network layer controller. If the optimal path selection device is a third-party device, it interacts with the application layer controller and the network layer controller respectively to obtain the application layer performance parameters and network layer performance parameters of the protection path.

Step 102: Calculate and determine the priority of each protection path in the protection path set according to the application layer performance parameter and the network layer performance parameter.

Specifically, the application layer performance parameter and the network layer performance parameter obtained by the optimal path selection device are calculated to determine the priority of each protection path in the protection path, and the priority calculation can be performed by calculating the network layer performance parameter and the application layer performance parameter The method of weighted average is calculated, and the user selects the appropriate weighting coefficient according to the performance parameters concerned.

Step 103: When the working path fails, switch the current service to the protection path with the highest priority in the protection path set.

Specifically, when the working path that bears the current service fails, such as the link between the network nodes in the working path is disconnected or the network is congested, etc., the method for detecting the occurrence of the working path can be PING (Packet Internet Groper, Internet packet detection). PING for short) method, if the response data packet is not received within the predetermined time or the predetermined number of response data packets are not received, it is judged that the working path is faulty. It can be understood that the method for determining whether the working path occurs can also be determined by the network node actively reporting the failure of the working path, or it can also be determined that the working path is faulty if the current service interruption time exceeds a predetermined duration. It can be other methods, which are not limited by the present invention.

At this time, the network layer controller maintains the protection path set as an example. The network layer controller switches the current service to the protection path with the highest priority according to the calculated priority of each protection path. If the service switching involves the application resource entity The network layer control sends a switching request to the application layer controller, so that the application layer controller executes the operation of switching services.

It can be understood that if the protection path set is maintained by the application layer controller, the application layer controller will notify the network layer controller to The current service is switched to the specified protection path, that is, the protection path with the highest priority. If there is a third-party device that maintains the set of protection paths, the third-party device interacts with the network layer controller and the application layer controller respectively. The specific process is similar to the above and will not be described here.

In the embodiment of the present invention, the priority of each protection path in the protection path set is evaluated through the network layer performance parameters and the application layer performance parameters, and when the working path fails, the current service is switched to the protection path with the highest priority On the one hand, it avoids the failure to normally take over the current business due to insufficient carrying capacity of the protection path when switching occurs, and improves the reliability of the network.

Referring to Fig. 2, it is another schematic flow chart of an optimal path selection method of the present invention, including:

Step 201. Obtain application layer performance parameters including application resource group separation degree of each protection path in the protection path set, and network layer performance parameters including network resource group separation degree and protection path capability.

Specifically, the protection path set includes at least two protection paths configured for the working path carrying the current service, and the application resource group separation degree is calculated according to the number of application resource entities shared by the working path and the protection path. The application resource entity refers to the device responsible for resource management and scheduling at the application layer. For example, in a network connected by a network link between a source host, a network node, and a destination host, the source host and the destination host are called application resource entities. The degree of separation of application resource groups is used to measure the possibility that when a single network fault occurs, both the working path and the protection path are affected. The smaller the value, the higher the reliability of the network.

Similarly, network layer performance parameters include network resource group separation degree and protection path capability, network resource separation degree is calculated according to the number of network resource entities shared by the working path and protection path, and the network resource entity refers to Devices responsible for resource management and scheduling at the network layer, such as the network nodes used to control data packet transmission in the above example, are called network resource entities. The possibility of the working path and the protection path, the higher the separation degree of the protection path and the working path, the smaller the two are affected by a single fault at the same time, and the higher the reliability of the network. The protection path capability is used to measure the performance of the protection path. It is calculated according to the bandwidth information or delay information of the protection path. For example, the protection path capability Cp can be defined as

Cp=α*(B/B ₀ )+β*(T ₀ /T), where B is the bandwidth information of the protection path, B ₀ is the bandwidth information required to carry the current service, T is the delay information of the protection path, and T ₀ is the delay information required to carry the current service, and α and β are weight factors.

Step 202: Calculate and determine the priority of each protection path in the protection path set according to the application layer performance parameter and the network layer performance parameter according to a preset time period.

Specifically, with the increase of network complexity, there are uncertainties in various indicators of the network, that is, network layer performance parameters and application layer performance parameters may also change with time, and are calculated according to the preset time period By determining the priority of each protection path in the protection path set, the carrying capacity of each protection path can be evaluated in real time, further improving the reliability of the network.

Step 203 , when the working path fails, check whether each protection path in the protection path set is normal.

Specifically, when the working path fails, it may happen that the failed network node is just shared by the protection path with the highest priority, then the protection path needs to be removed from the protection path set, so it is necessary to detect each node in the protection path set Whether the protection path is normal to further improve the reliability of the network. Taking the maintenance of the protection path by the network layer controller as an example, the detection method includes periodically sending detection packets through the source end node of the protection path to the sink end node of the protection path; judging whether the If the sink node receives the response message after the detection packet is yes, it determines that the protection path is normal; if it is no, it determines that the protection path is abnormal. It can be understood that the method for determining whether the working path occurs can also be determined by the network node actively reporting the failure of the working path, or it can also be determined that the working path is faulty if the current service interruption time exceeds a predetermined duration. It can be other methods, which are not limited by the present invention.

Step 204, switch the current service to the highest and normal protection path of the protection path.

Specifically, if the network layer controller maintains the protection path as an example, according to the priority of the protection path calculated in step 203, if the fault only involves the switching of network layer resources, the current service is switched to the highest priority and normal On the protection path, if the service switching involves the switching of application resource entities, the network layer controller sends a switching request to the application layer controller, so that the application layer controller executes the operation of switching services.

If the application layer controller maintains the protection path as an example, according to the priority of each protection path calculated in step 203, if the fault only involves the switching of application layer resources, switch the current service to the highest priority and normal protection path On the path, if the protection switching involves the switching of network resources, the application layer controller needs to send a switching request to the network layer controller, so that the network layer controller will switch the current service to the normal working path with the highest priority. After the switching is completed, the network layer controller sends a switching success message to notify the application layer controller, and the application layer controller confirms that the entire switching process is completed after receiving the switching success message.

In the embodiment of the present invention, the priority of each protection path in the protection path set is evaluated through the network layer performance parameters and the application layer performance parameters, and when the working path fails, the current service is switched to the protection path with the highest priority On the one hand, it avoids the failure to normally take over the current business due to insufficient carrying capacity of the protection path when switching occurs, and improves the reliability of the network.

Referring to Fig. 3 and Fig. 4, it is a schematic structural diagram of a network communication system of the present invention, including a network layer controller 2 and an application layer controller 3, taking the network layer controller 2 maintaining a set of protection paths as an example, the working process is as follows:

The network layer controller 2 obtains the network layer performance parameters of each protection path in the protection path set, wherein the protection path set includes at least two protection paths configured for the working path carrying the current service; the application layer controller 3 obtains For the application layer performance parameters of each protection path in the protection path set, the application layer controller 3 reports the application layer performance parameters to the network layer controller 2 . The network layer controller 3 calculates and determines the priority of each protection path in the protection path set according to the network layer performance parameter and the application layer performance parameter; when the network layer controller detects that the working path fails, the current The service is switched to the protection path with the highest priority in the protection path set. If the application resource entity also needs to be switched, a switching request is sent to the application layer controller 3, and the application layer controller 3 performs a service switching operation. It can be understood that when the protection path set is maintained by the application layer controller 3, the calculation of the priority of each protection path in the protection path set can also be performed by the application layer controller 3. When the application resource entity sends a fault, The switching operation is performed by the application layer controller 3, and instructs the network layer controller 2 to switch the current service to the protection path with the highest priority when receiving the failure information sent by the network layer controller 2.

Further, in some embodiments of the present invention, the network layer controller is specifically configured to execute:

When the working path fails, detect whether each protection path in the protection path set is normal;

Switching the current service to the normal protection path with the highest priority in the protection path set.

In some embodiments of the present invention, the network layer controller is specifically configured to execute:

periodically sending a detection packet to the sink node of the protection path through the source node of the protection path;

Judging whether a response message received by the sink node after receiving the detection packet is received within a preset duration, if yes, then judging that the protection path is normal; if not, judging that the protection path is abnormal .

In some other embodiments of the present invention, the application layer performance parameter includes application resource group separation, and the application resource group separation is the application resource entity shared by the application layer controller according to the working path and the protection path calculated from the number of .

The network layer performance parameters include a network resource group separation degree and a protection path capability, and the network resource group separation degree is calculated by the application layer controller according to the number of network resource entities shared by the working path and the protection path; The protection path capability is obtained by the application layer controller according to bandwidth information or delay information of the protection path.

In some embodiments of the present invention, the network layer controller is specifically configured to execute:

calculating and determining the priority of each protection path in the protection path set according to the application layer performance parameter and the network layer performance parameter according to a preset time period.

Referring to FIG. 4 , the communication system includes application resource entities 1-5, network nodes 1-5 and interface nodes between the application layer and the network layer. The network layer controller and the application layer controller are not shown in the figure.

The management and control of network layer resources and application layer resources are undertaken by different entities, and the interaction between the two layers can be completed by the application layer controller and the network layer controller. Assume that the working path P0 carrying the service is N1-N2-N3, the protection path P1 in the protection path set is N1-N5-N3, the protection path P2 is N1-N2-N4, and the protection path P3 is N1-N5-N4. The working process is:

Application layer performance parameters include application resource separation degree, network layer performance parameters include network resource group separation degree and protection path capability, stipulate application group resource separation degree y=1/number of shared application resource entities, network group resource separation degree x=1 /(the number of shared network nodes+the number of shared network links), the calculation formula of the protection path capability refers to that shown in step 201. Then consider the network resource separation degree to select the protection path; that is, only under the premise that the application resource separation degree is equal, then sort according to the network resource separation degree.

The protection path P1 and the working path P0 are shared on nodes N1 and N3, so x(P1)=1/2. According to the above calculation formula, x(P2)=1/3, x(P3)=1; The application resource entities shared by the protection path P1 and the working path P0 are both 2 in App1 and 5 in App2, so y(P1)=1/2, according to the above calculation formula, y(P2)=1,y(P3 )=1. The descending order of application resource group separation is x(P3)-x(P1)-x(P2), and the descending order of network resource group separation is y(P2)-y(P3)-y(P1), assuming that each protection If the protection path capabilities of the paths are all equal, then the priority of the paths contained in the protection path set is comprehensively calculated and arranged in descending order as {P2, P3, P1}. When the preset time period is reached, the priority of the protection path needs to be re-evaluated. If the protection path aggregated by the protection path set changes, for example, the performance of the protection path P1 can no longer meet the protection capability requirements of the business, and a new one needs to be selected. protection paths, the priority of each protection path in the protection path set is recalculated at this time. Assuming a fault occurs between N1-N2, check whether the protection paths P1, P2, and P3 are normal. If they are all normal, select the protection path P3 with the highest priority from the protection path set {P3, P2, P1} as the protection switching path. Because the protection switching process involves resource changes at the network layer and application layer, interaction between the two layers is required. Taking the network layer as an example to maintain the protection path set, the following operations are required:

The network layer controller completes the switchover from the working path P0 (N1-N2-N3) to the protection path P3 (N1-N5-N4). Resource 5 is switched to application resource 4. After the application layer controller completes the switching operation, it sends a message of successful switching to notify the network layer controller. After receiving the message of successful switching, the network layer controller confirms that the entire switching process is completed.

In the embodiment of the present invention, the priority of each protection path in the protection path set is evaluated through the network layer performance parameters and the application layer performance parameters, and when the working path fails, the current service is switched to the protection path with the highest priority On the one hand, it avoids the failure to normally take over the current business due to insufficient carrying capacity of the protection path when switching occurs, and improves the reliability of the network.

Referring to Fig. 5, it is a schematic structural diagram of an optimal path selection device 1 of the present invention, including:

The acquisition module 11 is configured to acquire application layer performance parameters and network layer performance parameters of each protection path in the protection path set, wherein the protection path set includes at least two protection paths configured for the working path carrying the current service.

Specifically, the protection path set includes at least two protection paths configured for the working path carrying the current service, and the obtaining module 11 obtains the network layer performance parameters of the protection paths, and the network layer performance parameters refer to parameters for evaluating the performance of the protection path , such as bandwidth information and/or delay information of the protection path, etc. At the same time, the acquisition module 11 obtains the application layer performance parameters of the protection path, which refers to the pros and cons of the performance of the application resource entity that carries the service through the protection path, such as the server Parameters such as space information, server load information, or server response time.

The calculation module 12 is configured to calculate and determine the priority of each protection path in the protection path set according to the application layer performance parameter and the network layer performance parameter.

Specifically, the calculation module 12 calculates and determines the priority of each protection path in the protection path according to the application layer performance parameter and the network layer performance parameter obtained by the acquisition module 11. The calculation of the priority can be performed by calculating the network layer performance parameter and the application layer The weighted average method of performance parameters is calculated, and the user selects an appropriate weighting coefficient according to the performance parameters concerned.

The switching module 13 is configured to switch the current service to the protection path with the highest priority in the set of protection paths when the working path fails.

Specifically, when the switching module 13 detects that the working path bearing the current service fails, such as the link between the network nodes in the working path is disconnected or the network is congested, etc., the method for detecting the occurrence of the working path can be PING (Packet Internet Groper, Internet Packet Detector, referred to as PING) method, if the response data packet is not received within the predetermined time or the predetermined number of response data packets are not received, it is judged that the working path is faulty. It can be understood that the method for determining whether the working path occurs can also be determined by the network node actively reporting the failure of the working path, or it can also be determined that the working path is faulty if the current service interruption time exceeds a predetermined duration. It can be other methods, which are not limited by the present invention. At this time, according to the priority of the protection path calculated by the calculation module 12, the switching module 13 switches the current service to the protection path with the highest priority. It can be understood that if the service switching involves the switching of the application resource entity, the server carrying the current service sends a switching message to the backup server, and the backup server executes the service switching operation.

In the embodiment of the present invention, the priority of each protection path in the protection path set is evaluated through the network layer performance parameters and the application layer performance parameters, and when the working path fails, the current service is switched to the protection path with the highest priority On the one hand, it avoids the failure to normally take over the current business due to insufficient carrying capacity of the protection path when switching occurs, and improves the reliability of the network.

Further, referring to FIGS. 6-9 , they are preferred embodiments of the acquisition module 11 , the calculation module 12 and the switching module 13 in FIG. 5 . Wherein, computing module 12 comprises:

The update unit 121 is configured to calculate and determine the priority of each protection path in the protection path set according to the application layer performance parameter and the network layer performance parameter according to a preset time period.

Specifically, with the increase of network complexity, there are uncertainties in various indicators of the network, that is, the performance parameters of the network layer and the performance parameters of the application layer may also change with time, and the update unit 11 Periodically calculate and determine the priority of each protection path in the protection path set, which can evaluate the carrying capacity of each protection path in real time, and further improve the reliability of the network.

Acquisition module 11 includes:

The first calculation unit 111 is configured to calculate and determine the application resource group separation degree according to the number of application resource entities shared by the working path and the protection path.

The second calculation unit 112 is configured to calculate and determine the network resource group separation degree according to the number of network resource entities shared by the working path and the protection path;

The third calculation unit 113 is configured to calculate and determine the capability of the protection path according to bandwidth information or delay information of the protection path.

Switching module 13 includes:

The fault detection unit 131 is configured to detect whether each protection path in the protection path set is normal when the working path fails.

Specifically, when the working path that bears the current service fails, such as the link between the network nodes in the working path is disconnected or the network is congested, etc., the method for detecting the occurrence of the working path by the fault detection unit 131 can use PING (Packet Internet Groper , Internet Packet Detector, PING for short) method, if the response data packet is not received within the predetermined time or the predetermined number of response data packets are not received, it is judged that the working path is faulty.

A service switching unit 132, configured to switch the current service to the normal protection path with the highest priority in the protection path set.

Wherein, the fault detection unit 131 includes:

A detection packet sending unit 1311, configured to periodically send a detection packet to the sink node of the protection path through the source node of the protection path;

The failure judging unit 1312 is configured to judge whether a response message received by the destination node after receiving the detection packet is received within a preset time period, if yes, then judge that the protection path is normal; if no, then It is determined that the protection path is abnormal.

In the embodiment of the present invention, the priority of each protection path in the protection path set is evaluated through the network layer performance parameters and the application layer performance parameters, and when the working path fails, the current service is switched to the protection path with the highest priority On the one hand, it avoids the failure to normally take over the current business due to insufficient carrying capacity of the protection path when switching occurs, and improves the reliability of the network.

Referring to Fig. 10-Fig. 14, it is a schematic structural diagram of a network layer controller of the present invention, including:

The network layer performance acquisition module 21 is configured to acquire the network layer performance parameters of each protection path in the protection path set, wherein the protection path set includes at least two protection paths configured for the working path carrying the current service.

Specifically, the network layer performance acquisition module 21 acquires network layer performance parameters of the protection path. The network layer performance parameters refer to parameters for evaluating the performance of the protection path, such as bandwidth information and/or delay information of the protection path.

The application layer performance receiving module 22 is configured to obtain the application layer performance parameters of each protection path in the protection path set reported by the application layer controller.

Specifically, the application layer performance parameters of the protection path refer to the pros and cons of the performance of the application resource entities that carry services through the protection path, such as parameters such as server space information, server load information, or server response time. The application layer controller Send the obtained application layer performance parameters to the application layer performance receiving module 22, so that the application layer performance receiving module 22 obtains the application layer performance parameters of the protection paths in the protection path set.

The first calculation module 23 is configured to calculate and determine the priority of each protection path in the protection path set according to the network layer performance parameter and the application layer performance parameter.

The first switching module 24 is configured to switch the current service to the protection path with the highest priority in the protection path set when detecting that the working path fails.

Further, the first switching module 24 includes:

The first detection unit 241 is configured to detect whether each protection path in the protection path set is normal when the working path fails.

The first switching unit 242 is configured to switch the current service to the normal protection path with the highest priority in the protection path set.

The first detection unit 241 includes:

The first detection packet sending unit 2411 is configured to periodically send a detection packet to the sink node of the protection path through the source node of the protection path;

The first response detection unit 2412 is configured to determine whether a response message received by the destination node after receiving the detection packet is received within a preset duration, and if yes, determine that the protection path is normal; if no , it is determined that the protection path is abnormal.

The network layer performance acquisition module 21 includes:

A network resource separation degree calculation unit 211, configured to calculate the network resource group separation degree according to the number of network resource entities shared by the working path and the protection path;

The protection path capability calculation unit 212 is configured to obtain the protection path capability according to the bandwidth information or delay information of the protection path.

The first computing module 23 includes:

The first updating unit 231 is configured to calculate and determine the priority of each protection path in the protection path set according to the application layer performance parameter and the network layer performance parameter according to a preset time period.

In the embodiment of the present invention, the priority of each protection path in the protection path set is evaluated through the network layer performance parameters and the application layer performance parameters, and when the working path fails, the current service is switched to the protection path with the highest priority On the one hand, it avoids the failure to normally take over the current business due to insufficient carrying capacity of the protection path when switching occurs, and improves the reliability of the network.

Referring to Figure 15-Figure 18, it is a schematic structural diagram of an application layer controller of the present invention, including:

The application layer performance acquisition module 31 is configured to acquire the application layer performance parameters of each protection path in the protection path set; wherein, the protection path set includes at least two protection paths configured for the working path carrying the current service.

The network layer performance receiving module 32 is configured to obtain the network layer performance parameters of each protection path in the protection path set reported by the network layer controller.

The second calculation module 33 is configured to calculate and determine the priority of each protection path in the protection path set according to the application layer performance parameter and the network layer performance parameter.

The second switching module 34 is configured to notify the network layer controller to switch the current service to the protection path with the highest priority in the protection path set when detecting the failure information of the working path reported by the network layer controller.

Further, the second switching module 34 includes:

The second detection unit 341 is configured to detect whether each protection path in the protection path set is normal when the working path fails.

The second switching unit 342 is configured to notify the network layer controller to switch the current service to the protection path with the highest priority in the protection path set.

The network layer performance receiving module 31 includes:

The application group resource separation degree calculation unit 311 is configured to calculate the application resource group separation degree according to the number of application resource entities shared by the working path and the protection path.

The second computing module 33 includes:

The second updating unit 331 is configured to calculate and determine the priority of each protection path in the protection path set according to the application layer performance parameter and the network layer performance parameter according to a preset time period.

In the embodiment of the present invention, the priority of each protection path in the protection path set is evaluated through the network layer performance parameters and the application layer performance parameters, and when the working path fails, the current service is switched to the protection path with the highest priority On the one hand, it avoids the failure to normally take over the current business due to insufficient carrying capacity of the protection path when switching occurs, and improves the reliability of the network.

Referring to FIG. 19 , it is another structural diagram of an optimal path selection device of the present invention, including a processor 61, a memory 62, an input device 63 and an output device 64. The number of processors 61 in the device 1 can be one or Multiple, one processor is taken as an example in FIG. 19 . In some embodiments of the present invention, the processor 61 , the memory 62 , the input device 63 and the output device 64 may be connected via a bus or in other ways, and bus connection is taken as an example in FIG. 19 .

Wherein, a set of program codes are stored in the memory 62, and the processor 61 is used to call the program codes stored in the memory 62 to perform the following operations:

Obtain the application layer performance parameters and network layer performance parameters of each protection path in the protection path set, wherein the protection path set includes at least two protection paths configured for the working path carrying the current service;

calculating and determining the priority of each protection path in the protection path set according to the application layer performance parameter and the network layer performance parameter;

When the working path fails, the current service is switched to the protection path with the highest priority in the protection path set.

In some embodiments of the present invention, the processor 61 is specifically configured to execute:

Obtain the network layer performance parameters of each protection path in the protection path set, wherein the protection path set includes at least two protection paths configured for the working path carrying the current service;

Obtain the application layer performance parameters of each protection path in the protection path set reported by the application layer controller.

In some embodiments of the present invention, the processor 61 is specifically configured to execute:

Judging whether the application layer resource needs to be switched, if yes, sending a switching request to the application layer controller, so that the application layer controller performs the switching operation of the application layer resource.

In some embodiments of the present invention, the processor 61 is specifically configured to execute:

Obtain the application layer performance parameters of each protection path in the protection path set;

Obtain the network layer performance parameters of each protection path in the protection path set reported by the network layer controller.

In some embodiments of the present invention, the processor 61 is specifically configured to execute:

When detecting the failure information of the working path reported by the network layer controller, the network layer controller is notified to switch the current service to the protection path with the highest priority in the protection path set.

In some embodiments of the present invention, the processor 61 is specifically configured to execute:

When the working path fails, detect whether each protection path in the protection path set is normal;

Switching the current service to the normal protection path with the highest priority in the protection path set.

In some embodiments of the present invention, the processor 61 is specifically configured to execute:

periodically sending a detection packet to the sink node of the protection path through the source node of the protection path;

Judging whether a response message received by the sink node after receiving the detection packet is received within a preset duration, if yes, then judging that the protection path is normal; if not, judging that the protection path is abnormal .

In some embodiments of the present invention, the processor 61 is specifically configured to execute:

calculating and determining the priority of each protection path in the protection path set according to the application layer performance parameter and the network layer performance parameter according to a preset time period.

In the embodiment of the present invention, the priority of each protection path in the protection path set is evaluated through the network layer performance parameters and the application layer performance parameters, and when the working path fails, the current service is switched to the protection path with the highest priority On the one hand, it avoids the failure to normally take over the current business due to insufficient carrying capacity of the protection path when switching occurs, and improves the reliability of the network.

Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be implemented through computer programs to instruct related hardware, and the programs can be stored in a computer-readable storage medium. During execution, it may include the processes of the embodiments of the above-mentioned methods. Wherein, the storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM) or a random access memory (Random Access Memory, RAM), and the like.

What is disclosed above is only a preferred embodiment of the present invention, and of course it cannot limit the scope of rights of the present invention. Those of ordinary skill in the art can understand all or part of the process for realizing the above embodiments, and according to the rights of the present invention The equivalent changes required still belong to the scope covered by the invention.

Claims (32)

1. an optimal route selection method, it is characterised in that including:

Optimal route selection device obtains the application layer performance parameter of each Protection path in Protection path set With network layer performance parameter, wherein, described Protection path set includes the working ways for carrying current business At least two Protection paths of footpath configuration, described application layer performance parameter includes application resource group separating degree, institute State network layer performance parameter and include Internet resources group separating degree and Protection path ability, described application resource component Quantity from the application resource entity that degree y=1/ operating path and Protection path are shared；Described Internet resources component From degree x=1/, (quantity+operating path of the network node that operating path and Protection path are shared and Protection path are altogether The quantity of the network link enjoyed)；Described Protection path ability Cp=α * (B/B₀)+β*(T₀/ T), wherein B is The bandwidth information of Protection path, B₀For carrying current business need bandwidth information, T be Protection path time Prolong information, T₀The Delay needed for carrying current business, α and β is weight factor；

Calculate according to described application layer performance parameter and described network layer performance parameter and determine described Protection path collection The priority of each Protection path in conjunction；

When described operating path breaks down, current business is switched in described Protection path set preferential On the Protection path that level is the highest.

2. the method for claim 1, it is characterised in that described optimal route selection device is network Layer controller, described optimal route selection device obtains the application of each Protection path in Protection path set Layer performance parameter and network layer performance parameter, including:

Obtain the network layer performance parameter of each Protection path in Protection path set, wherein, described protection Set of paths includes at least two Protection paths of the operating path configuration for carrying current business；

Obtain the application layer of each Protection path in the described Protection path set of application layer controller report Can parameter.

3. method as claimed in claim 2, it is characterised in that described break down when described operating path Time, after current business being switched on the Protection path that described Protection path set medium priority is the highest, also Including:

Judge application layer resource the need of switching, if it has, then send one handover request to described application Layer controller, so that described application layer controller performs the handover operation of application layer resource.

4. the method for claim 1, it is characterised in that described optimal route selection device is application Layer controller, described optimal route selection device obtains the application of each Protection path in Protection path set Layer performance parameter and network layer performance parameter, including:

Obtain the application layer performance parameter of each Protection path in Protection path set；

Obtain the Internet of each Protection path in the described Protection path set of Internet controller report Can parameter.

5. method as claimed in claim 4, it is characterised in that described break down when described operating path Time, current business is switched on the Protection path that described Protection path set medium priority is the highest, including:

When the working path failure information of described Internet controller report being detected, notify described Internet control Current business is switched on the Protection path that described Protection path set medium priority is the highest by device processed.

6. the method as described in any one of claim 1-5, it is characterised in that described when described operating path When breaking down, current business is switched on the Protection path that described Protection path set medium priority is the highest Step include:

When described operating path breaks down, detecting each Protection path in described Protection path set is No normally；

Current business is switched to that described Protection path set medium priority is the highest and on normal Protection path.

7. method as claimed in claim 6, it is characterised in that in described detection described Protection path set Each Protection path the most normally specifically includes:

Detection is periodically sent to the egress node of described Protection path by the source end node of Protection path Bag；

Judge that whether receiving the response after described egress node receives described detection bag in preset duration disappears Breath, if it has, then judge that described Protection path is normal；If it has not, then judge that described Protection path is abnormal.

8. the method for claim 1, it is characterised in that described according to described application layer performance parameter Calculate with network layer performance parameter and determine the priority bag of each Protection path in described Protection path set Include:

Determine according to described application layer performance parameter and the calculating of network layer performance parameter according to the preset time cycle The priority of each Protection path in described Protection path set.

9. an optimal route selection device, it is characterised in that including:

Acquisition module, for obtain each Protection path in Protection path set application layer performance parameter and Network layer performance parameter, wherein, described Protection path set includes the operating path for carrying current business At least two Protection paths of configuration, described application layer performance parameter includes application resource group separating degree, described Network layer performance parameter includes Internet resources group separating degree and Protection path ability, and described application resource group separates The quantity of the application resource entity that degree y=1/ operating path and Protection path are shared；Internet resources group separating degree X=1/ (share by the quantity+operating path of the network node that operating path and Protection path are shared and Protection path The quantity of network link)；Protection path ability Cp=α * (B/B₀)+β*(T₀/ T), wherein B is Protection path Bandwidth information, B₀The bandwidth information needed for carrying current business, T is the Delay of Protection path, T₀The Delay needed for carrying current business, α and β is weight factor；

Computing module, determines for calculating according to described application layer performance parameter and described network layer performance parameter The priority of each Protection path in described Protection path set；

Handover module, for when described operating path breaks down, is switched to described protection by current business On the Protection path that set of paths medium priority is the highest.

10. device as claimed in claim 9, it is characterised in that described handover module includes:

Fault detection unit, when described operating path breaks down, detects in described Protection path set every Article one, Protection path is the most normal；

Business switch unit, for current business is switched to described Protection path set medium priority the highest and On normal Protection path.

11. devices as claimed in claim 10, it is characterised in that described fault detection unit includes:

Detection bag transmitting element, for saving to the egress of described Protection path by the source end node of Protection path Property dot cycle ground sends detection bag；

Breakdown judge unit, for judging that whether receiving described egress node in preset duration receives institute State the response message after detection bag, if it has, then judge that described Protection path is normal；If it has not, then judge Described Protection path is abnormal.

12. devices as described in any one of claim 9-11, it is characterised in that

Described acquisition module includes:

First computing unit, for the application resource entity shared according to described operating path and Protection path Quantity calculates and determines described application resource group separating degree.

13. devices as claimed in claim 12, it is characterised in that

Described acquisition module also includes:

Second computing unit, for the Internet resources entity shared according to described operating path and Protection path Quantity calculates and determines described Internet resources group separating degree；

3rd computing unit, calculates for the bandwidth information according to Protection path or Delay and determines described guarantor Protect path capability.

14. devices as claimed in claim 12, it is characterised in that described computing module includes:

Updating block, is used for according to the preset time cycle according to described application layer performance parameter and Internet Parameter calculating can determine the priority of each Protection path in described Protection path set.

15. 1 kinds of Internet controllers, it is characterised in that including:

Network layer performance acquisition module, for obtaining the Internet of each Protection path in Protection path set Performance parameter, wherein, described Protection path set includes the operating path configuration for carrying current business Article at least two, Protection path, described network layer performance parameter includes Internet resources group separating degree and Protection path energy Power；

Application layer performance receiver module, in the described Protection path set obtaining application layer controller report The application layer performance parameter of each Protection path；Described application layer performance parameter includes that application resource group separates The number of the application resource entity that degree, described application resource group separating degree y=1/ operating path and Protection path are shared Amount；(quantity+the work of the network node that operating path and Protection path are shared of Internet resources group separating degree x=1/ The quantity of the network link that path and Protection path are shared)；Protection path ability Cp=α * (B/B₀)+β *(T₀/ T), wherein B is the bandwidth information of Protection path, B₀The bandwidth information needed for carrying current business, T For the Delay of Protection path, T₀The Delay needed for carrying current business, α and β be weight because of Son；

First computing module, for calculating according to described network layer performance parameter and described application layer performance parameter Determine the priority of each Protection path in described Protection path set；

First handover module, is used for detecting when described operating path breaks down, current business is switched to On the Protection path that described Protection path set medium priority is the highest.

16. Internet controllers as claimed in claim 15, it is characterised in that described first handover module Including:

First detector unit, for when described operating path breaks down, detects described Protection path set In each Protection path the most normal；

First switch unit, for current business is switched to described Protection path set medium priority the highest and On normal Protection path.

17. Internet controllers as claimed in claim 16, it is characterised in that described first detector unit Including:

First detection bag transmitting element, is used for by the source end node of Protection path to the place of described Protection path End node periodically sends detection bag；

First response detector unit, for judging whether receive described place end node reception in preset duration Response message after described detection bag, if it has, then judge that described Protection path is normal；If it has not, then Judge that described Protection path is abnormal.

18. Internet controllers as claimed in claim 15, it is characterised in that described network layer performance obtains Delivery block includes:

Internet resources group separating degree computing unit, for the net shared according to described operating path and Protection path The quantity of network resource entity is calculated Internet resources group separating degree；

Protection path capacity calculation unit, for being protected according to bandwidth information or the Delay of Protection path Protect path capability.

19. Internet controllers as claimed in claim 15, it is characterised in that described first computing module Including:

First updating block, is used for according to the preset time cycle according to described application layer performance parameter and network Layer performance parameter calculates and determines the priority of each Protection path in described Protection path set.

20. 1 kinds of application layer controllers, it is characterised in that including:

Application layer performance acquisition module, for obtaining the application layer of each Protection path in Protection path set Performance parameter；Wherein, described Protection path set includes the operating path configuration for carrying current business Article at least two, Protection path；Described application layer performance parameter includes application resource group separating degree；

Network layer performance receiver module, in the described Protection path set obtaining Internet controller report The network layer performance parameter of each Protection path；Described network layer performance parameter includes that Internet resources group separates What degree and Protection path ability, described application resource group separating degree y=1/ operating path and Protection path were shared should By the quantity of resource entity；Described Internet resources group separating degree x=1/ (share by operating path and Protection path The quantity of the network link that the quantity+operating path of network node and Protection path are shared)；Described Protection path Ability Cp=α * (B/B₀)+β*(T₀/ T), wherein B is the bandwidth information of Protection path, B₀Current for carrying The bandwidth information of service needed, T is the Delay of Protection path, T₀For carrying current business need time Prolonging information, α and β is weight factor；

Second computing module, for calculating according to described application layer performance parameter and described network layer performance parameter Determine the priority of each Protection path in described Protection path set；

Second handover module, during for the working path failure information of described Internet controller report being detected, Notify that current business is switched to the guarantor that described Protection path set medium priority is the highest by described Internet controller On road maintenance footpath.

21. application layer controllers as claimed in claim 20, it is characterised in that described second handover module Including:

Second detector unit, for when described operating path breaks down, detects described Protection path set In each Protection path the most normal；

Second switch unit, is used for notifying that current business is switched to described protection road by described Internet controller On the Protection path that footpath set medium priority is the highest.

The 22. application layer controllers as described in claim 20 or 21, it is characterised in that described Internet Performance receiver module includes:

Application resource group separating degree computing unit, should for share according to described operating path and Protection path It is calculated application resource group separating degree by the quantity of resource entity.

23. application layer controllers as claimed in claim 20, it is characterised in that described second computing module Including:

Second updating block, is used for according to the preset time cycle according to described application layer performance parameter and network Layer performance parameter calculates and determines the priority of each Protection path in described Protection path set.

24. 1 kinds of optimization paths select devices, it is characterised in that including: input equipment, output device, Memorizer and processor, wherein, store batch processing code, and described processor be used in described memorizer Call in described memorizer the program code of storage, be used for performing following operation:

Obtain application layer performance parameter and the network layer performance ginseng of each Protection path in Protection path set Number, wherein, described Protection path set includes at least two of the operating path configuration for carrying current business Bar Protection path, described application layer performance parameter includes application resource group separating degree, and described network layer performance is joined Number includes Internet resources group separating degree and Protection path ability, described application resource group separating degree y=1/ working ways The quantity of the application resource entity that footpath and Protection path are shared；Internet resources group separating degree x=1/ (operating path The number of the network link that the quantity+operating path of the network node shared with Protection path and Protection path are shared Amount)；Protection path ability Cp=α * (B/B₀)+β*(T₀/ T), wherein B is the bandwidth information of Protection path, B₀The bandwidth information needed for carrying current business, T is the Delay of Protection path, T₀Current for carrying The Delay of service needed, α and β is weight factor；

Calculate according to described application layer performance parameter and described network layer performance parameter and determine described Protection path collection The priority of each Protection path in conjunction；

When described operating path breaks down, current business is switched in described Protection path set preferential On the Protection path that level is the highest.

25. devices as claimed in claim 24, it is characterised in that described processor is specifically for performing:

Obtain the network layer performance parameter of each Protection path in Protection path set, wherein, described protection Set of paths includes at least two Protection paths of the operating path configuration for carrying current business；

Obtain the application layer of each Protection path in the described Protection path set of application layer controller report Can parameter.

26. devices as claimed in claim 25, it is characterised in that described processor is additionally operable to perform:

Judge application layer resource the need of switching, if it has, then send one handover request to described application Layer controller, so that described application layer controller performs the handover operation of application layer resource.

27. devices as claimed in claim 24, it is characterised in that described processor is specifically for performing:

Obtain the application layer performance parameter of each Protection path in Protection path set；

Obtain the Internet of each Protection path in the described Protection path set of Internet controller report Can parameter.

28. devices as claimed in claim 27, it is characterised in that described processor is specifically for performing:

When the working path failure information of described Internet controller report being detected, notify described Internet control Current business is switched on the Protection path that described Protection path set medium priority is the highest by device processed.

29. devices as described in any one of claim 24-28, it is characterised in that described processor is concrete For performing:

When described operating path breaks down, detecting each Protection path in described Protection path set is No normally；

Current business is switched to that described Protection path set medium priority is the highest and on normal Protection path.

30. devices as claimed in claim 29, it is characterised in that described processor is specifically for performing:

Detection is periodically sent to the egress node of described Protection path by the source end node of Protection path Bag；

Judge that whether receiving the response after described egress node receives described detection bag in preset duration disappears Breath, if it has, then judge that described Protection path is normal；If it has not, then judge that described Protection path is abnormal.

31. devices as claimed in claim 30, it is characterised in that described processor is specifically for performing:

Determine according to described application layer performance parameter and the calculating of network layer performance parameter according to the preset time cycle The priority of each Protection path in described Protection path set.

32. 1 kinds of communication systems, it is characterised in that including:

Optimal route selection device as described in any one of claim 9-14；Or

Internet controller as described in any one of claim 15-19；Or

Application layer controller as described in any one of claim 20-23；Or

Optimization path as described in any one of claim 24-31 selects device.